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2. 50TC D08 3 PHASE 7 5 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE IN WG CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option Medium Static Option 2250 465 0 43 555 0 64 629 0 86 694 1 10 753 1 34 2438 488 0 51 575 0 73 648 0 97 712 1 21 769 1 47 2625 595 0 84 666 1 09 729 1 34 786 1 62 2813 616 0 95 686 1 22 748 804 1 77 3000 557 0 82 637 1 08 705 1 36 766 1 64 822 1 94 3188 581 0 94 659 1 23 726 1 51 785 1 81 840 2 12 3375 606 1 08 681 1 38 746 1 68 805 2 00 859 2 32 3563 630 1 24 703 1 55 1 87 825 2 20 878 2 53 3750 655 1 41 1 74 789 2 07 845 2 41 897 2 76 AVAILABLE EXTERNAL STATIC PRESSURE IN WG 1 2 1 4 1 6 1 8 2 0 CFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 2250 806 1 60 856 1 87 903 2 15 947 2 45 988 2 75 2438 822 1 74 872 2 03 918 2 32 961 2 62 1003 2 93 2625 839 1 90 887 2 19 933 2 49 977 2 81 1018 3 13 2813 856 2 06 904 2 37 949 2 68 992 3 01 1033 3 34 3000 873 2 24 921 2 56 966 2 89 1008 3 22 1049 3 56 3188 891 2 44 938 2 77 982 3 10 1025 3 45 1065 3 81 3375 909 2 65 955 2 99 1000 3 34 1041 3 70 1081 4 06 3563 927 2 88 973 3 23 1017 3 59 1059 3 96 1098 4 34 3750 946 3 12 992 3 48 1035 3 86 1076 4 24 1115 4 632 NOTE For more information see General Fan Performance Notes Boldface indicates field supplied drive is required 1 Recommend using field s
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4. 2 has no internal logic device Outdoor air management functions can be enhanced with field installation of these accessory control devices Enthalpy control outdoor air or differential sensors Space CO sensor Outdoor air CO sensor Refer to Table 7 for accessory part numbers Field Connections Field connections for accessory sensor and input devices are made at the 16 pole terminal block TB1 located on the control box bottom shelf in front of the PremierLink control Some input devices also require a 24 vac signal source connect at LCTB terminal at THERMOSTAT connection strip for this signal source See connections figures on following pages for field connection locations and for continued connections at the PremierLink board inputs Table 8 provides a summary of field connections for units equipped with Space Sensor Table 9 provides a summary of field connections for units equipped with Space Thermostat Space Sensors The PremierLink controller is factory shipped configured for Space Sensor Mode A Carrier T 55 or T 56 space sensor must be used T 55 space temperature sensor provides a signal of space temperature to the PremierLink control T 56 provides same space temperature signal plus it allows for adjustment of space temperature setpoints from the face of the sensor by the occupants See Table 6 for temperature versus resistance characteristic on the space sensors Conne
5. C07134 Fig 45 Indoor Outdoor Air Quality CO2 Sensor 3342CSENCO Typical Wiring Diagram To accurately monitor the quality of the air in the conditioned air space locate the sensor near a return air grille if present so it senses the concentration of leaving the space The sensor should be mounted in a location to avoid direct breath contact Do not mount the sensor in drafty areas such as near supply ducts open windows fans or over heat sources Allow at least 3 ft 0 9 m between the sensor and any corner Avoid mounting the sensor where it is influenced by the supply air the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream Wiring the Indoor Air Quality Sensor For each sensor use two 2 conductor 18 AWG American Wire Gage twisted pair cables unshielded to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the sensor See Fig 45 Connect the 4 20 mA terminal to terminal TB1 9 and connect the SIG COM terminal to terminal TB1 7 See Fig 46 IAQ Sensor TB1 PL GEN 91 055 E TB1 11 45 24 VAC C08274 Fig 46 Indoor CO Sensor 332
6. SCE H Loo de 3 GRN 3 je Cs 17 15 eL i H e a BOARD ASH 08246 Fig 25 Typical Smoke Detector System Wiring Highlight E GRA lead at Smoke Alarm input on LCTB provides 24 v signal to FIOP DDC control PremierLink This signal is conveyed to PremierLink FIOP s TB1 at terminal TB1 6 BLU lead This signal initiates the FSD sequence by the PremierLink control FSD status is reported to connected CCN network RTU MP The 24 v signal is conveyed to RTU MP s J1 10 input terminal This signal initiates the FSD sequence by the RTU MP control FSD status is reported to connected BAS network Using Remote Logic Five conductors are provided for field use see Highlight F for additional annunciation functions Additional Application Data Refer to Catalog No HKRNKA 1XA for discussions on additional control features of these smoke detectors including multiple unit coordination See Fig 25 Sensor and Controller Tests Sensor Alarm Test The sensor alarm test checks a sensor s ability to signal an alarm state This test requires that you use a field provided SD MAG test magnet 4 CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern This test places the duct detector into the alarm state Unless part of the test disconnect all auxiliary equipment from the controller before performin
7. 5938 T 6250 2 NOTE For more information see General Fan Performance Notes Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AK012 and belt part no KR29AE055 2 Recommend using field supplied fan pulley part no KR11AZ002 motor pulley part no KR11HY310 and belt part no KR29AF054 50TC D14 3 PHASE 12 5 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE IN WG CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option 3438 616 0 92 679 1 10 735 1 27 786 1 45 835 1 62 3750 661 1 16 719 1 35 773 1 54 822 1 73 4063 706 1 43 761 1 64 812 1 85 904 2 27 4375 752 1 75 804 1 98 941 2 65 4688 798 2 12 2 36 894 2 60 937 2 85 979 3 09 5000 844 2 54 891 2 80 936 3 06 978 3 31 1018 3 57 5313 891 3 01 936 3 28 978 3 56 1019 3 83 1057 4 11 5625 938 3 53 981 3 83 1022 4 12 1060 4 41 1097 4 70 5938 986 4 12 1026 4 43 6250 AVAILABLE EXTERNAL STATIC PRESSURE WG CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option 3438 880 1 80 922 1 98 963 2 15 1002 2 33 1039 2 51 3750 912 2 12 954 2 31 994 2 50 1031 2 70 1068 2 89 4063 947 2 48 987 2 68 1025 2 89 1062 3 10 1098 3 31 4375 982 2 88 1021 3 10 1058 3 32 1094
8. 2 Connections Refer to Rooftop PremierLink Installation Start up and Configuration Instructions Form 33CS 58SI for detailed configuration information Outdoor Air Quality Sensor PNO 33ZCSENCO02 Plus Weatherproof Enclosure The outdoor air CO sensor is designed to monitor carbon dioxide CO2 levels in the outside ventilation air and interface with the ventilation damper in an HVAC system The OAQ sensor is packaged with an outdoor cover See Fig 47 The outdoor air CO sensor must be located in the economizer outside air hood 414 3 3 4 6 1 2 COVER REMOVED SIDE VIEW C07135 Fig 47 Outdoor Air Quality Sensor Cover Wiring the Outdoor Air CO Sensor Wiring the Outdoor Air CO Sensor A dedicated power supply is required for this sensor A two wire cable is required to wire the dedicated power supply for the sensor The two wires should be connected to the power supply and terminals 1 and 2 To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the OAQ sensor See Fig 45 Connect the 4 to 20 mA terminal to 50TC s terminal TB1 11 Connect the SIG COM terminal to 50TC s terminal TB1 13 See Fig 48 32 OAQ Sensor RH Sensor TB1 PL TB1 I 453 24 VAC C08275 Fig 48 Outdoor CO Sensor Connections Refer to Rooftop PremierLink Installation S
9. Sensor housing OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern Optic Airflow late If the test reset station s key switch is left in the n RESET TEST position for longer than seven seconds the detector will automatically go into the alarm state dB and activate all automatic alarm responses Optic housing CAUTION OPERATIONAL TEST HAZARD Fig 27 Sensor Cleaning Diagram Failure to follow this caution may result in personnel and authority concern Holding the test magnet to the target area for longer than seven seconds will put the detector into the alarm state and activate all automatic alarm responses 20 Table 3 Detector Indicators CONTROL OR INDICATOR DESCRIPTION Magnetic test reset switch the normal state Resets the sensor when it is in the alarm or trouble state Activates or tests the sensor when it is in Alarm LED Indicates the sensor is in the alarm state Trouble LED Indicates the sensor is in the trouble state Dirty LED Indicates the amount of environmental compensation used by the sensor flashing continuously 10096 Power LED Indicates the sensor is energized Indicators Normal State The smoke detector operates in the normal state in the absence of any trouble conditions and when its sensing chamber is free of smoke In the normal state the Power LED on both the sensor and t
10. Use the Carrier network communication software to start up and configure the PremierLink controller Changes can be made using the ComfortWORKS software ComfortVIEW software Network Service Tool System Pilot device or Touch Pilot device The System Pilot and Touch Pilot are portable interface devices that allow the user to change system set up and setpoints from a zone sensor or terminal control module During start up the Carrier software can also be used to verify communication with PremierLink controller NOTE All set up and setpoint configurations are factory set and field adjustable For specific operating instructions refer to the literature provided with user interface software Perform System Check Out 1 Check correctness and tightness of all power and communication connections 2 At the unit check fan and system controls for proper operation 3 At the unit check electrical system and connections of any optional electric reheat coil 4 Check to be sure the area around the unit is clear of construction dirt and debris 5 Check that final filters are installed in the unit Dust and debris can adversely affect system operation 60 6 Verify that the PremierLink controls are properly connected to the CCN bus Initial Operation and Test Perform the following procedure 1 Apply 24 vac power to the control 2 Connect the service tool to the phone jack service port of the controller
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12. 7310 W Morris St Indianapolis IN 46231 Printed in U S A Edition Date 6 09 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 88 C09158 Catalog No 50TC 3SM Replaces 50TC 28M 89 50TC MODEL NO DATE TIGHTNESS OR SHARP METAL EDGES ELECTRICAL SUPPLY VOLTAGE COMPRESSOR 1 COMPRESSOR 2 INDOOR FAN AMPS TEMPERATURES OUTDOOR AIR TEMPERATURE RETURN AIR TEMPERATURE COOLING SUPPLY AIR PRESSURES Cooling Mode REFRIGERANT SUCTION REFRIGERANT DISCHARGE IF EQUIPPED START UP CHECKLIST Remove and Store in Job File I PRELIMINARY INFORMATION L1 L2 L1 L1 L1 Cir 1 Copyright 2009 Carrier Corp 7310 W Morris St Indianapolis IN 46231 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations SERIAL NO TECHNICIAN II PRE START UP insert checkmark in box as each item is completed L2 L3 L2 L2 L2 DB DB WB DB WB Cir 2 PSIG F PSIG Printed in U S A Edition Date 6 09 90 VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS VERIFY THAT CONDENSATE CO
13. 3 Using the Service Tool upload the controller from address 0 31 at 9600 baud rate The address may be set at this time Make sure that Service Tool is connected to only one unit when changing the address Memory Reset DIP switch 4 causes an E squared memory reset to factory defaults after the switch has been moved from position 0 to position 1 and the power has been restored To enable the feature again the switch must be put back to the 0 position and power must be restored this prevents subsequent resets to factory defaults if the switch is left at position 1 To cause a reset of the non volatile memory to factory defaults turn the controller power off if it is on move the switch from position 1 to position 0 and then apply power to the controller for a minimum of 5 seconds At this point no action occurs but the controller is now ready for the memory to reset Remove power to the controller again and move the switch from position 0 to position 1 This time when power is applied the memory will reset to factory defaults The controller address will return to bus 0 element 31 indicating that memory reset occurred Refer to Rooftop PremierLink Installation Start Up and Configuration Instructions Form 33CS 58SI for full discussion on configuring the PremierLink control system START UP RTU MP CONTROL Field Service Test explained below will assist in proper start up Configuration of unit parameters scheduling
14. 4 Mix Totaline environmentally sound coil cleaner in a 2 1 2 gallon garden sprayer according to the instructions included with the cleaner The optimum solution temperature is 100 F 38 C NOTE Do NOT USE water in excess of 130 F 54 C as the enzymatic activity will be destroyed 5 Thoroughly apply Totaline environmentally sound coil cleaner solution to all coil surfaces including finned area tube sheets and coil headers 6 Hold garden sprayer nozzle close to finned areas and apply cleaner with a vertical up and down motion Avoid spraying in horizontal pattern to minimize potential for fin damage 7 Ensure cleaner thoroughly penetrates deep into finned areas 8 Interior and exterior finned areas must thoroughly cleaned 9 Finned surfaces should remain wet with cleaning solution for 10 minutes 10 Ensure surfaces are not allowed to dry before rinsing Reapply cleaner as needed to ensure 10 minute saturation is achieved 11 Thoroughly rinse all surfaces with low velocity clean water using downward rinsing motion of water spray nozzle Protect fins from damage from the spray nozzle Evaporator Coil Metering Devices The metering devices are multiple fixed bore devices Acutrol swaged into the horizontal outlet tubes from the liquid header located at the entrance to each evaporator coil circuit path These are non adjustable Service requires replacing the entire liquid header assembly To chec
15. 8LK 8 H 5 4 Torren FIELD BLK e o 4 BLK BLK TI POWER BLK 0101 i YEL E YEL 13 SUPPLY YEL n CPU Y xL er Ir YEL BLU T2 YEL EQUIP BLK GN i YEL f 115V YEL FIELD _ TEL N ORN DH 09 KC BRN ON POWERED oT CONVENIENCE BLK OUTLET SLM MT BLU YE N BRN a YEL 126 O 2 YEL L IFC B lt _ BLU K23 BLU 136 0 3 BLU 3 ACCY atj BLK K2i BLK 106 9 21 BLK 1 08 12 HI STATIC ONLY BLK 166 7 YEL 4209 LO BRN BLK 1 BLK BLK CAP 3 f YEL BLK 460V VIO 208 230V SEE CONTROL SCHEMATIC YEL BLK TRAN nt 24 TO 24V SCHEMATIC BRN GRN TEL LEGEND X MARKED WIRE X TERMINAL MARKED TERMINAL UNMARKED X TERMINAL BLOCK C CONTACTOR COMPRESSOR 0 0 SPLICE CAP CAPACITOR OA Cb SPLICE MARKED CB CIRCUIT BREAKER OFM CCH CRANKCASE HEATER OL ACTORY WIRING CC CARRIER COMFORT NETWORK PL FIELD CONTROL WIRING CMP SAFE COMPRESSOR SAFFETY pee CLO COMPRESSOR LOCKOU uim IELD POWER WIRING COMP COMPRESSOR MOTOR QT CIRCUIT BOARD TRACE DDE D RECT DIGITAL CONTROL RE SHUT DOW ACCESSORY OR OPTIONAL WIRING FS N RMT OCC 10 INDICATE COMMON POTENTIAL FU FUSE RS ONLY NOT TO REPRESENT WIRING G GROUND
16. 1153 1131 1109 1087 1066 1044 1022 NOTE Do not adjust pulley further than 5 turns open EH Factory settings 82 APPENDIX IV ELECTRICAL DATA 50TC D08 VOLTAGE COMP Cir 1 COMP Cir 2 OFM ea IFM V Ph Hz RANGE Max Max un max RLA LRA RLA LRA WATTS FLA TYPE warts amp Draw EFFatFullLoad FLA STD 1448 5 5 8096 5 2 208 3 60 187 253 13 6 83 13 6 83 325 15 MED 2278 7 9 81 75 HIGH 4400 15 0 81 15 0 STD 1448 5 5 8096 5 2 230 3 60 187 253 13 6 83 136 83 325 15 MED 2278 79 8196 75 HIGH 4400 15 0 8196 15 0 STD 1448 2 7 8096 2 6 460 3 60 414 506 6 1 41 6 1 41 325 0 8 MED 2278 3 6 8196 3 4 HIGH 4400 74 8196 74 STD 1379 2 5 8096 24 575 3 60 518 633 42 33 4 2 33 325 0 6 MED 3775 2 9 8196 2 8 HIGH 4400 5 9 8196 5 6 50TC D12 VOLTAGE COMP Cir 1 COMP Cir 2 OFM ea IFM V Ph Hz RANGE Max Max Min Max LRA RLA LRA WATTS FLA TYPE warts amp Draw EFFatFullLoad FLA STD 2120 5 5 8096 5 2 208 3 60 187 253 156 110 159 110 325 15 MED 3775 10 5 8196 10 0 HIGH 4400 15 0 8196 15 0 STD 2120 5 5 8096 5 2 230 3 60 187 253 156 110 159 110 325 15 MED 3775 10 5 8196 10 0 HIGH 4400 15 0 8196 15 0 STD 2120 2 7 8096 2 6 460 3 60 414 506 77 52 77 52 325 0 8
17. Compressor Safety input 5 Fan Status input 8 Fan Status and input 9 Humidistat the alarm would be active unit would run compressor safety and humidistat would function normally and Fan Status inputs 5 amp 8 will be interpreted as No Function Misconfigured Analog Input This occurs if more than one analog input inputs 1 amp 2 is configured for the same sensor When this happens the two inputs will be disabled as inputs This alarm will automatically be cleared when configuration is corrected An example of this would be Input 1 IAQ Sensor input 2 IAQ Sensor the alarm would be active unit would run but the IAQ Sensor inputs 1 amp 2 will be interpreted as No Function Third Party Networking Third party communication and networking troubleshooting should be done by or with assistance from the front end 3rd party technician A Module Status Report Modstat can be run from the BACview see Table 15 to perform This lists information about the board status networking state For basic troubleshooting see Table 16 Refer to the RTU MP 3rd Party Integration Guide for additional information BACnet MS TP 1 Verify that the BAS and controller are both set to speak the BACnet MS TP protocol The protocol of the controller is set via SW3 switches 3 4 5 and 6 The protocol can also be verified by getting a Modstat of the controller through the BACview Hit the FN key and the key at
18. GVR GAS VALVE RELAY SEN HPS HIGH PRESSURE SWITCH SE HS HALL EFFECT SENSOR NOTES I IGNITOR TDR 1 IF ANY OF THE ORIGINAL WIRE FURNISHED IAQ INDOOR AIR QUALITY SENSORS TRAN MUST BE REPLACED IT MUST BE REPLACED ID INDUCED DRAFT MOTOR WITH TYPE 90 C WIRE OR ITS EQUIVALENT INDOOR FAN CONTACTOR 2 COMPRESSOR AND FAN MOTORS ARE THERMALLY INDOOR FAN CIRCUIT BREAKER PROTECTED THREE PHASE MOTORS ARE IFM INDOOR FAN MOTOR PROTECTED AGAINST PRIMARY SINGLE PHASING IGC INTEGRATED GAS CONTROL CONDITIONS IRH INDOOR RELATIVE HUMIDITY 3 208 230V UNIT TRAN IS WIRED FOR 230V UNIT JMP JUMPER IF UNIT IS TO BE RUN WITH 208V POWER SUPPLY LA LOW AMBIENT LOCKOUT DISCONNECT BLK WIRE FROM 230V TAP AND LOOP PWR CURRENT LOOP POWER CONNECT TO 200V TAP LPS LOW PRESSURE SWITCH 4 USE COPPER COPPER CLAD ALUMINUM OR LSM LIMIT SWITCH MANUAL RESET ALUMINUM CONNECTORS LS LIMIT SWITCH 5 USE COPPER CONDUCTOR ONLY MGV MAIN GAS VALVE OFR OUTDOOR FAN RELAY Fig 80 50TC Typical Unit Wiring Diagram Power 008 208 230 3 60 57 COMP COMP OFMI OFM2 1DM UTDOOR AIR QUALITY UTDOOR AIR TEMP SEN UTDOOR FAN MOTOR VERLOAD LUG ASSEMBLY OTENTIOMETER HASE MONITOR RELAY UADRUPLE TERMINAL ELAY ETURN AIR TEMP SEN EMOTE OCCUPANCY OLLOUT SWITCH UPPLY AIR TE SENSOR ENSOR ET POINT OFFSET UPPLY FAN STATUS ME DELAY RELAY RANSFOR
19. OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern Changing the dirty sensor test operation will put the detector into the alarm state and activate all automatic alarm responses Before changing dirty sensor test operation disconnect all auxiliary equipment from the controller and notify the proper authorities if connected to a fire alarm system Changing the Dirty Sensor Test By default sensor dirty test results are indicated by The sensor s Dirty LED flashing The controller s Trouble LED flashing The controller s supervision relay contacts toggle The operation of a sensor s dirty test can be changed so that the controller s supervision relay is not used to indicate test results When two detectors are connected to a controller sensor dirty test operation on both sensors must be configured to operate in the same manner To Configure the Dirty Sensor Test Operation 1 Hold the test magnet where indicated on the side of the sensor housing until the sensor s Alarm LED turns on and its Dirty LED flashes twice approximately 60 seconds 2 Reset the sensor by removing the test magnet then holding it against the sensor housing again until the sensors Alarm LED turns off approximately 2 seconds Remote Station Test The remote station alarm test checks a test reset station s ability to initiate and indicate an alarm state CAUTION OPERATIONAL TEST H
20. SMOKE DETECTORS Smoke detectors are available as factory installed options on 50TC models Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in combination of Supply Air and Return Air Return Air smoke detectors are arranged for vertical return configurations only All components necessary for operation are factory provided and mounted The unit is factory configured for immediate smoke detector shutdown operation additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements System The smoke detector system consists of a four wire controller and one or two sensors Its primary function is to shut down the rooftop unit in order to prevent smoke from circulating throughout the building It is not to be used as a life saving device Controller The controller includes a controller housing a printed circuit board and a clear plastic cover See Fig 18 The controller can be connected to one or two compatible duct smoke sensors The clear plastic cover is secured to the housing with a single captive screw for easy access to the wiring terminals The controller has three LEDs for Power Trouble and Alarm and a manual test reset button on the cover face Duct smoke sensor controller Conduit nuts supplied by installer S ce 5 Terminal block cover E S NS
21. Smoke Detector Sensor C08245 Fig 20 Typical Supply Air Smoke Detector Sensor Location Return Air Without Economizer The sampling tube is located across the return air opening on the unit basepan See Fig 21 The holes in the sampling tube face downward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location This sensor is shipped in a flat mounting location Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected See installation steps 16 Return Air Detector module shipping position shown Controller module Return Air Detector Sampling Tube RA detector must be moved from shipping position to operating position by installer 07307 Fig 21 Typical Return Air Detector Location Return Air With Economizer The sampling tube is inserted through the side plates of the economizer housing placing it across the return air opening on the unit basepan See Fig 22 The holes in the sampling tube face downward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location This sensor is shipped in a flat mounting location Installation requires that this sensor be relocated to
22. to 60 C is required Do not run communication wire in the same conduit as or next to any AC voltage wiring The communication bus shields must be tied together at each system element If the communication bus is entirely within one building the resulting continuous shield must be connected to ground at only one single point If the communication bus cable exits from one building and enters another building the shields must be connected to the grounds at a lightning suppressor in each building one point only Connecting CCN Bus NOTE When connecting the communication bus cable a color code system for the entire network is recommended to simplify installation and checkout See Table 11 for the recommended color code Table 11 Color Code Recommendations CCN BUS WIRE CCN PLUG PIN SIGNAL TYEE COLOR NUMBER Red 1 Ground White 2 3 Connect the CCN lead typically RED to the unit s TB1 12 terminal Connect the CCN ground lead typically WHT to the unit s TB1 14 terminal Connect the CCN lead typically BLK to the unit s TB1 16 terminal See Fig 53 CCN Bus TB1 PL C08276 Fig 53 PremierLink CCN Bus Connections RTU MP CONTROL SYSTEM The RTU MP controller provides expanded stand alone operation of the HVAC system plus connection and control through communication with several Building Automation Systems BAS through popular third party network systems S
23. 4000 907 2 24 952 2 46 996 2 68 1038 2 91 1080 3 14 4250 930 2 51 973 2 74 1015 2 97 1057 3 21 4500 954 2 81 996 3 05 1037 3 29 1076 4750 979 3 13 3 38 1059 3 63 1135 4 15 5000 1005 3 49 1156 4 55 NOTE For more information see General Fan Performance Notes Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AD912 and belt part no KR29AF051 50TC D12 3 PHASE 10 VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE IN WG CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option 3000 556 0 65 623 0 80 684 0 95 738 1 11 789 1 26 3250 590 0 79 655 0 96 713 1 13 766 1 29 3500 625 0 96 687 1 14 742 1 32 794 1 50 3750 661 1 16 719 1 35 77 1 54 822 1 73 4000 697 1 37 753 1 58 804 1 79 852 4250 733 1 62 787 1 84 836 2 06 883 2 28 926 2 49 4500 770 1 89 821 2 13 869 2 36 914 2 59 956 2 82 4750 2 45 902 2 69 945 2 94 986 3 18 5000 891 2 80 936 3 06 978 3 31 1018 3 57 AVAILABLE EXTERNAL STATIC PRESSURE IN WG CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option 3000 836 1 42 881 1 57 923 1 73 963 1 89 1001 2 05 3250 861 1 63 904 1 79 945 1 96 985 2 43 1023 2 30 3500 886 1 86 929 2 04 969 2 22 1008 2 40 1045 2 58 3750 912 2 12 954 2 31 994 2 50 1031 2 70 1068 2 89 4000 940 2 40 980 2 61 1019 2 81 1056 3 02 4250 968 2 71 1007 2 93 1045 3 15 1081 4500 996 3 05 1035 3 28 1072 3 51 1142 3 97 4750 102
24. 44 44 263 263 496496 60 60 48 48 267 267 120 60 934385 483546 60 60 44 50 269 263 530594 60 60 49 55 267 267 24 0 32 0 667 770 89 9 102 8 90 110 83 95 263 263 94 6 107 5 100 110 87 99 267 267 31 8 42 4 88 4 102 0 117 0 134 0 125 150 108 123 263 263 121 8 138 8 125 150 112 128 267 267 37 6 50 0 104 2 120 3 136 8 126 8 150 150 126 144 263 263 141 5 131 6 150 150 130 149 267 267 50 6 60 50 306 54 4 80 54 310 i 78 10 4 217 250 50 6 50 6 60 60 50 50 306 306 54 4 544 80 80 54 54 310 310 T mep 120160 334385 543 606 60 80 50 56 306 306 59 0 65 4 80 80 54 60 310 310 24 0 32 0 66 7 77 0 95 9 108 8 100 110 88 100 306 306 100 6 113 5 110 125 93 104 310 310 5 31 8 42 4 88 4 102 0 123 0 140 0 125 150 113 129 306 306 127 8 144 8 150 150 118 133 310 310 S 37 6 50 0 104 2 120 3 142 8 132 8 150 150 131 150 306 306 147 5 137 6 150 150 136 154 310 310 55 6 80 55 315 59 4 80 60 319 78 10 4 217 250 556556 80 80 55 55 315 315 594 594 80 80 60 60 319 319 120 160 33 4 38 5 60 5 66 9 80 80 56 62 315 315 653716 80 80 60 66 319 319 24 0 32 0 66 7 77 0 102 1 115 0 110 125 94 106 315 315 106 9 119 8 110 125 98 110 319 319 31 8 42 4 88 4 102 0 129 3 146 3 150 150 119 135 315 315 134 0 151 0 150 175 123 139 319 319 37 6 50 0
25. G ETP Texas USA 6 10 Sequential number APPENDIX II PHYSICAL DATA Physical Data Cooling 7 5 12 5TONS 50TC D08 50TC D12 50TC D14 Refrigeration System Circuits Comp Type 2121 Scroll 2 2 Scroll 2 2 Scroll Puron R 410a charge Ibs 4 6 4 6 6 0 6 0 7 6 8 0 oz 42 42 42 42 56 56 Metering Device Accutrol Accutrol Accutrol High press Trip Reset psig 630 505 630 505 630 505 Low press Trip Reset psig 54 117 54 117 54 117 Evaporator Coil Material Cu Al Cu Al Coil type 3 8 RTPF 3 8 RTPF 3 8 RTPF Rows FPI 3 15 4115 4115 Total Face Area ft 8 9 111 111 Condensate Drain Conn Size 3 4 3 4 3 4 Evaporator Fan and Motor Motor Qty Drive 1 Belt 1 Belt 1 Belt 59 17 2 4 2 9 oS RPM Range 489 747 591 838 652 843 2 Motor Frame Size 56 56 56 8 Fan Qty Type 1 Centrifugal 1 Centrifugal 1 Centrifugal 0 Fan Diameter 15x15 15x15 15x15 Motor Qty Drive Type 1 Belt 1 Belt 1 Belt So Max BHP 2 9 3 7 3 7 E 9 RPM Range 733 949 838 1084 838 1084 58 Motor Frame Size 56 56 56 59 Fan Qty 1 Centrifugal 1 Centrifugal 1 Centrifugal gt Fan Diameter in 15x15 15x15 15x15 Motor Qty Drive Type 1 Belt 1 Belt 1 Belt 47 47 47 amp 8 RPM Range 909 1102 1022 1240 1022 1240 Motor Frame Size 145TY 145TY 145TY T Fan Qty Type 1 Centrifugal 1 Cen
26. If the OAT gt 65 F or OAT gt NTLO and OAT gt OCSP or Enthalpy High then PURGEMP HTMP High Temperature Minimum Position defaults to 35 The LTMP and HTMP are user adjustable values from 0 to 100 in the SETPOINT table Whenever PURGEMP results in a number greater than 0 the pre occupancy purge mode will be enabled turning on the Indoor Fan Relay and setting the economizer IOMP to the PURGEMP value When IAQ pre occupancy mode is not active PURGEMP 0 Unoccupied Free Cooling Unoccupied free cool function will start the indoor fan during unoccupied times in order to cool the space with outside air This function is performed to delay the need for mechanical cooling when the system enters the occupied period Depending on how Unoccupied Free Cooling is configured unoccupied mode can occur at any time in the unoccupied time period or 2 to 6 hours prior to the next occupied time Once the space has been sufficiently cooled during this cycle the fan will be stopped In order to perform unoccupied free cooling all of the following conditions must be met NTEN option is enabled in the CONFIG configuration table Unit is in unoccupied state Current time of day is valid 70 Temperature Compensated Start mode is not active COOL mode is not active HEAT mode is not active SPT reading is available OAT reading is available Enthalpy is low OAT NTLO with 1 F hysteresis and Max Free C
27. NOTE Refer to RTU MP Controls Start Up Operation and Troubleshooting Instructions Form 48 50H T 2T for complete configuration of RTU MP operating sequences and troubleshooting information Refer to RTU MP 3rd Party Integration Guide for details on configuration and troubleshooting of connected networks Have a copy of these manuals available at unit start up The RTU MP controller requires the use of a Carrier space sensor A standard thermostat cannot be used with the RTU MP system Supply Air Temperature SAT Sensor On FIOP equipped 50TC unit the unit is supplied with a supply air temperature SAT sensor 33ZCSENSAT This sensor is a tubular probe type approx 6 inches 12 7 mm in length It is a nominal 10 k ohm thermistor See Table 6 for temperature resistance characteristic The SAT is factory wired The SAT probe is wire tied to the supply air opening on the horizontal opening end in its shipping position Remove the sensor for installation Re position the sensor in the flange of the supply air opening or in the supply air duct as required by local codes Drill or punch a 1 2 in hole in the flange or duct Use two field supplied self drilling screws to secure the sensor probe in a horizontal orientation See Fig 36 Outdoor Air Temperature OAT Sensor The OAT is factory mounted in the EconoMi er 2 or accessory It is a nominal 10k ohm thermistor attached to an eyelet mounting ring See Table 6 fo
28. Outdoor ambient below 25 F Install low ambient kit Evaporator Fan Will Not Shut Off Time off delay not finished Wait for 30 second off delay Compressor Makes Excessive Noise Compressor rotating in wrong direction Reverse the 3 phase power leads 13 50TC CONVENIENCE OUTLETS WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Units with convenience outlet circuits may use multiple disconnects Check convenience outlet for power status before opening unit for service Locate its disconnect switch if appropriate and open it Tag out this switch if necessary Two types of convenience outlets are offered on 50TC models Non powered and unit powered Both types provide a 125 volt GFCI ground fault circuit interrupter duplex receptacle rated at 15 A behind a hinged waterproof access cover located on the end panel of the unit See Fig 15 Pwd CO Transformer 08128 Fig 15 Convenience Outlet Location Weatherproof Cover Installation A weatherproof while in use cover for factory installed convenience outlets is now required by UL standards This cover cannot be factory mounted due to its depth It must be installed at unit installation For shipment the convenience outlet is covered with a blank cover plate The weatherproof cover kit is shipped in the unit s control box
29. The kit includes the hinged cover a backing plate and gasket IMPORTANT DISCONNECT ALL POWER TO UNIT AND CONVENIENCE OUTLET 1 Remove the blank cover plate at the convenience outlet Discard the blank cover 2 Loosen the two screws at the GFCI duplex outlet until approximately 1 2 in 13 mm under screw heads are exposed 3 Press the gasket over the screw heads 4 Slip the backing plate over the screw heads at the keyhole slots and align with the gasket Tighten the two screws until snug do not over tighten 5 Mount the weatherproof cover to the backing plate as shown in Fig 16 COVER WHILE IN USE WEATHERPROOF BASE PLATE FOR GFCI RECEPTACLE 09244 Fig 16 Weatherproof Cover Installation 6 Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover 7 Check for full closing and latching Types of Convenience Outlets Non Powered Type This type requires the field installation of a general purpose 125 volt 15 A circuit powered from a source elsewhere in the building Observe national and local codes when selecting wire size fuse or breaker requirements and disconnect switch size and location Route 125 v power supply conductors into the bottom of the utility box containing the duplex receptacle Unit Powered Type A unit mounted transformer is factory installed to stepdown the main power supply voltage to the unit to 115 v at the duplex receptacle This opti
30. levels This information is used to monitor levels Several types of sensors are available for wall mounting in the space or in return duct with and without LCD display and in combination with space temperature sensors Sensors use infrared technology to measure the levels of CO present in the space air The CO sensors are all factory set for a range of 0 to 2000 ppm and a linear mA output of 4 to 20 Refer to the instructions supplied with the CO sensor for electrical requirements and terminal locations See Fig 41 for typical sensor wiring schematic To accurately monitor the quality of the air in the conditioned air space locate the sensor near a return air grille if present so it senses the concentration of CO2 leaving the space The sensor should be mounted in a location to avoid direct breath contact Do not mount the IAQ sensor in drafty areas such as near supply ducts open windows fans or over heat sources Allow at least 3 ft 0 9 m between the sensor and any corner Avoid mounting the sensor where it is influenced by the supply air the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream Wiring the Indoor Air Quality Sensor For each sensor use two 2 conductor 18 AWG American Wire Gauge twisted pair cables unshielded to connect the separate isolate
31. the IAQ maximum damper position configuration then it will be clamped to the configured value 74 Demand Limit FASTENER TORQUE VALUES If the RTU MP receives a level 1 one degree offset 2 two degree offset or a 3 4 degree offset to the BACnet See Table 23 for torque values demand limit variable the controller will expand the heating and cooling setpoints by the configured demand limit setpoint value and remain in effect until the BACnet demand limit variable receives a 0 value Table 23 Torque Values Supply fan motor mounting 120 12 in Ibs 13 5 1 4 Nm Supply fan motor adjustment plate 120 12 in Ibs 13 5 1 4 Nm Motor pulley setscrew 72 5 165 8 1 0 6 Nm Fan pulley setscrew 72 5 165 8 1 0 6 Nm Blower wheel hub setscrew 72 51 1 5 8 1 0 6 Nm Bearing locking collar setscrew 65 to 70 in Ibs 7 310 7 9 Nm Compressor mounting bolts 65 to 75 in lbs 7 310 7 9 Nm Condenser fan motor mounting bolts 20 2 in lbs 2 3 0 2 Nm Condenser fan hub setscrew 84 12 in Ibs 9 5 1 4 Nm 75 50TC APPENDIX I MODEL NUMBER SIGNIFICANCE Model Number Nomenclature 7 8 9 10 11 12 13 14 15 16 17 18 1 5 0 0 0 Unit Heat Type 50 Cooling Elec Heat RTU Tier Model TC Entry tier with Puron refrigerant Heat Size No heat Refrig System Options D
32. 1086 4 27 NOTE For more information see General Fan Performance Notes Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AZ002 and belt part no KR29AF054 79 50TC APPENDIX III FAN PERFORMANCE cont 50TC D12 3 PHASE 10 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE IN WG CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option 3000 523 0 58 592 0 73 657 0 88 718 1 05 775 1 22 3250 555 0 71 620 0 87 681 1 04 739 1 21 794 1 39 3500 588 0 86 649 1 03 707 1 21 762 1 39 815 1 58 3750 679 1 21 734 1 40 786 1 59 4000 709 1 42 761 1 61 812 1 82 4250 689 1 45 741 1 65 790 1 86 838 2 07 4500 723 1 69 773 1 90 820 2 12 866 910 2 57 4750 758 1 96 805 2 19 2 42 894 2 65 937 2 89 5000 793 2 26 2 50 881 2 74 923 2 98 965 3 23 AVAILABLE EXTERNAL STATIC PRESSURE IN WG 1 2 1 4 1 6 1 8 2 0 SEM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Opt Medium Static Option 3000 830 1 39 883 1 57 934 1 76 982 1 95 1029 2 14 3250 847 1 57 897 1 76 946 1 96 993 2 16 1039 2 36 3500 865 1 77 914 1 97 961 2 18 1007 2 38 1051 2 60 3750 885 1 99 932 2 20 978 2 42 1022 2 64 1065 2 86
33. 22 systems Do not use R 22 service equipment or components on Puron refrigerant equipment CAUTION CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling parts and servicing air conditioning units UNIT ARRANGEMENT AND ACCESS General Fig 1 and Fig 2 show general unit arrangement and access locations FILTER ACCESS PANEL INDOOR COIL ACCESS PANEL C08449 Fig 1 Typical Access Panel Locations Rear BLOWER ACCESS PANEL CONTROL BOX COMPRESSOR 09243 Fig 2 Typical Access Panel Locations Front Routine Maintenance These items should be part of a routine maintenance program to be checked every month or two until a specific schedule for each can be identified for this installation Quarterly Inspection and 30 days after initial start Return air filter replacement Outdoor hood inlet filters cleaned Belt tension checked Belt condition checked Pulley alignment checked Fan shaft bearing locking collar tightness checked Condenser coil cleanliness checked Condensate drain checked Seasonal Maintenance These items should be checked at the beginning of each se
34. 278 334 45 0 50 41 113 47 3 50 43 115 5 33 0 39 7 52 9 60 49 113 55 1 60 51 115 5 417 50 2 66 0 70 61 113 68 3 70 63 115 203 30 20 132 22 1 30 22 184 g 13 9 16 7 25 1 30 23 132 27 4 30 25 134 iM es 16 5 19 8 29 0 30 27 182 313 35 29 134 J 27 8 33 4 46 0 50 42 132 48 3 50 44 134 33 0 39 7 53 9 60 50 132 56 1 60 52 134 417 50 2 67 0 70 62 132 69 3 70 64 134 z 243 30 24 145 26 1 30 26 147 13 9 16 7 30 1 35 28 145 32 4 35 30 147 16 5 19 8 34 0 35 31 145 36 3 40 33 147 HIGH 334 51 0 60 47 145 53 3 60 49 147 33 0 39 7 58 9 60 54 145 61 1 70 56 147 417 50 2 72 0 80 66 145 74 3 80 68 147 149 20 14 89 18 7 25 19 93 STD 17 0 204 28 5 30 26 89 33 3 35 31 93 34 0 40 9 54 1 60 50 89 58 9 60 54 93 8 15 3 20 15 104 19 1 25 19 108 MED 17 0 204 29 0 30 27 104 33 8 35 31 108 34 0 40 9 54 6 60 50 104 59 4 60 55 108 18 1 25 18 118 219 30 23 122 HIGH 170 204 32 5 35 30 118 37 3 40 34 122 34 0 40 9 58 1 60 53 118 62 9 70 58 122 Nominal valves listed as 208 240V 480V or 600V as appropriate See Legend and calculations 84 APPENDIX IV ELECTRICAL DATA cont MCA MOCP DETERMINATION NO C O OR UNPWRD C O cont N ELECTRIC HEATER NO or UNPWRD E a IFM NO PE w pwrd fr unit 2x e TYPE Nom FLA DISC SIZE DISC SIZE z kw MCA MOCP MCA MOCP 9 FLA LRA FLA LRA 2 45 8 60 44 263 49 6 60 48 267 78 104 217 250 458458 60 60
35. 59 4 60 55 146 n 51 0 61 3 64 8 70 74 142 69 6 80 78 146 25 1 30 27 156 28 9 85 81 160 TRE 20 4 32 5 35 30 156 37 8 40 34 160 34 0 40 9 58 1 60 53 156 62 9 70 58 160 51 0 61 3 68 3 80 77 156 73 1 80 81 160 Nominal valves listed as 208 240V 480V or 600V as appropriate See Legend and calculations 86 Wiring Diagrams APPENDIX IV WIRING DIAGRAM LIST 50TC SIZE VOLTAGE CONTROL POWER 208 230 3 60 48TM501323 48TM501324 D08 460 3 60 48TM501323 48TM501324 575 32 60 48 501323 48 501324 208 230 3 60 48 501323 48 501324 D12 460 3 60 48TM501323 48TM501324 575 3 60 48TM501323 48TM501324 208 230 3 60 48TM501247 48TM501248 D14 460 3 60 48TM501247 48TM501248 575 3 60 48TM501247 48TM501248 All PremierLink 48TM500983 All RTU MP 48TM500987 NOTE Component arrangement on Control Legend on Power Schematic 87 PremierLink and RTU MP control labels overlay a portion of the base unit control label The base unit label drawing and the control option drawing are required to provide a complete unit control diagram APPENDIX VI MOTORMASTER SENSOR LOCATIONS UNIT SIZE UNIT TONNAGE A 48 50 008 1 5 9 0 48 50TC D12 10 0 11 0 LE i SENSOR cw 1 Fig 82 5 0TC D08 50TC D12 Copyright 2009 Carrier Corp
36. 7 3 8 5 Nm COOLING CHARGING CHARTS 08 7 5 TON CHARGING CHART R410A REFRIGERANT SUCTION LINE PRESSURE KILOPASCALS 1241 1 1172 1103 1034 552 SUCTION LINE PRESSURE PSIG 30 40 50 60 10 80 SUCTION LINE TEMPERATURE F OUTDOOR TEMP 115 105 46 4 29 95 35 90 1 4 10 16 21 21 SUCTION LINE TEMPERATURE C 32 48TM501445 Fig 10 Cooling Charging Chart 008 08669 50TC COOLING CHARGING CHARTS TC D12 10 TON CHARGING CHART R410A REFRIGERANT KILOPASCALS SUCTION LINE PRESSURE 115 46 1241 180 105 41 95 35 1172 10 85 29 75 24 1103 60 65 18 OS 2270190 55 13 lt gt a 45 7 965 140 896 2130 827 4120 158 2110 5 690 5100 621 90 552 80 OUTDOOR TEMP 30 40 50 60 70 80 90 SUCTION LINE TEMPERATURE F 221 4 10 16 21 21 32 SUCTION LINE TEMPERATURE 48 501446 Fig 11 Cooling Charging Chart D12 10 C08670 COOLING CHARGING CHARTS 014 12 5 TON CIRCUIT 1 R410A REFRIGERANT CHARGING CHART 1241 180 OUTDOOR TEMP 1173 170 C 115 46 105 41 1103 160 95 35 o 85 29 15 24 1035 150 65 18 5 55 13 o 4517 965 o 140 a a a 897 130 z
37. 800 ON ON OFF ON Protocol Selector DIP Switches 07166 Fig 63 RTU MP SW3 Dip Switch Settings Modbus The RTU MP module can speak the Modicon Modbus RTU Protocol as described in the Modicon Modbus Protocol Reference Guide PI MBUS 300 Rev J The speed of a Modbus network can range from 9600 to 76 8 baud Physical Addresses can be set from 01 to 99 Johnson N2 N2 is not a standard protocol but one that was created by Johnson Controls Inc that has been made open and available to the public The speed of N2 network is limited to only 9600 baud Physical Addresses can be set from 01 to 99 LonWorks LonWorks is an open protocol that requires the use of Echelon s Neuron microprocessor to encode and decode the LonWorks packets In order to reduce the cost of adding that hardware on every module a separate LonWorks Option Card LON OC was designed to connect to the RTU MP This accessory card is needed for LonWorks and has to be ordered and connected using the ribbon cable to plug J15 The RTU MP s baud rate must be set to 38 4k to communicate with the LON OC The address switches SW1 amp SW2 are not used with LonWorks Local Access BACview Handheld The BACview is a keypad display interface used to connect to the RTU MP to access the control information read sensor values and test the RTU See Fig 64 This is an accessory interface that does not come with the MP controller and
38. CIRCUIT 2 LPS 3 1 LPS CIRCUIT 1 Fig 79 LCTB Occupancy Terminals Demand Control Ventilation DCV When using the EconoMi er IV for demand controlled ventilation there are some equipment selection criteria which should be considered When selecting the heat capacity and cool capacity of the equipment the maximum ventilation rate must be evaluated for design conditions The maximum damper position must be calculated to provide the desired fresh air Typically the maximum ventilation rate will be about 5 to 10 more than the typical cfm required per person using normal outside air design criteria A proportional anticipatory strategy should be taken with the following conditions a zone with a large area varied occupancy and equipment that cannot exceed the required ventilation rate at design conditions Exceeding the required ventilation rate means the equipment can condition air at a maximum ventilation rate that is greater than the required ventilation rate for maximum occupancy A proportional anticipatory strategy will cause the fresh air supplied to increase as the room CO level increases even though the setpoint has not been reached By the time the CO level reaches the setpoint the damper will be at maximum ventilation and should maintain the setpoint 53 50TC In order to have the CO sensor control the economizer damper in this manner fir
39. Connections On 50TC units equipped with factory installed Smoke Detector s the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit s LCTB input The FSD function is initiated via the smoke detector s Alarm NO contact set The PremierLink communicates the smoke detector s tripped status to the CCN building control See Fig 22 for unit smoke detector wiring The Fire Shutdown Switch configuration MENU Config Inputs input 5 identifies normally open status of this input when there is no fire alarm Alarm state is reset when the smoke detector alarm condition is cleared and reset at the smoke detector in the unit Connecting Discrete Inputs Filter Status The filter status accessory is a field installed accessory This accessory detects plugged filters When installing this accessory the unit must be configured for filter status by setting MENU Config Inputs input 3 5 8 or 9 to Filter Status and normally open N O or normally closed N C Input 8 or 9 is recommended for easy of installation Refer to Fig 54 and Fig 55 for wire terminations at J5 Fan Status The fan status accessory is a field installed accessory This accessory detects when the indoor fan is blowing air When installing this accessory the unit must be configured for fan status by setting MENU Config Inputs input 3 5 8 or 9 to Fan Status and normally open N O or normally closed
40. Cover gasket gt P ex ordering option Controller cover Controller housing and electronics Conduit couplings supplied by installer _ Fastener S 2X Trouble Alarm Power Test reset switch C08208 Fig 18 Controller Assembly 15 50TC Sensor The sensor includes a plastic housing a printed circuit board a clear plastic cover a sampling tube inlet and an exhaust tube See Fig 19 The sampling tube when used and exhaust tube are attached during installation The sampling tube varies in length depending on the size of the rooftop unit The clear plastic cover permits visual inspections without having to disassemble the sensor The cover attaches to the sensor housing using four captive screws and forms an airtight chamber around the sensing electronics Each sensor includes a harness with an RJ45 terminal for connecting to the controller Each sensor has four LEDs Power Trouble Alarm and Dirty and a manual test reset button on the left side of the housing Duct smoke sensor a Exhaust tube Exhaust gasket Sensor housing and electronics x Cover gasket ordering option E i ordering option Plug Sampling tube a ordered separately Coupling Detail A x S ib Switch test reset S 00 5 EU Alarm L Power Trouble Dirty Fig 19 Smoke Detector Sensor C08209 Air is introduce
41. Damper Movement Damper movement from full open to full closed or vice versa takes 21 2 minutes Thermostats The EconoMi er IV control works with conventional thermostats that have a Y1 cool stage 1 Y2 cool stage 2 W1 heat stage 1 W2 heat stage 2 and fan The EconoMi er IV control does not support space temperature sensors Connections are made at the thermostat terminal connection board located in the main control box Occupancy Control The factory default configuration for the EconoMi er IV control is occupied mode Occupied status is provided by installing a field supplied timeclock function on the OCCUPANCY terminals on the LCTB Light Commercial Terminal Board in the unit s main control box and cutting the CUT FOR OCCUPANCY jumper on the LCTB See Fig 79 When the timeclock contacts are closed the IV control will be in occupied mode When the timeclock contacts are open removing the 24v signal from terminal See Fig 79 The IV will be in unoccupied mode 7 4 Kcut For 2 BU P o S z gt e e w S D e 013 Nd 2 Pe dH 1U3H3N 190 195 wa ft T STAT 1915 1 204 P N HKSOAA049 gi CEPL130904 01 R 77 28
42. INDOOR COMPR HEAT EXHAUST PORT PORT ECONOMIZER FAN MOTOR 1 amp 2 LOW HIGH RVS VALVE OUTPUTS Fig 35 PremierLink Controller Supply Air Temperature SAT Sensor On FIOP equipped 50TC unit the unit is supplied with a supply air temperature SAT sensor 33ZCSENSAT This sensor is a tubular probe type approx 6 inches 12 7 mm in length It is a nominal 10 k ohm thermistor See Table 6 for temperature resistance characteristic The SAT is factory wired The SAT probe is wire tied to the supply air opening on the horizontal opening end in its shipping position Remove the sensor for installation s SUPPLY AIR Re position the sensor in the flange of the supply air TEMPERATURE 7 2 opening or the supply air duct as required by local PENSON lt lt SUPPLY AIR RETURN AIR codes Drill or punch a 1 2 in hole in the flange or duct Use two field supplied self drilling screws to secure the sensor probe in a horizontal orientation See Fig 36 NS W C08200 Fig 36 Typical Mounting Location for Supply Air Temperature SAT Sensor on Small Rooftop Units 26 2106 01002 5 n xXurT 29rurm q eoid T LE 814 222600
43. MED 3775 4 6 8196 44 HIGH 4400 74 8196 74 STD 1390 21 80 20 575 3 60 518 633 5 8 39 5 7 39 325 0 6 MED 3775 2 9 8196 2 8 HIGH 4400 5 9 8196 5 6 50TC D14 VOLTAGE COMP Cir 1 COMP Cir 2 OFM IFM VEFREHE RANGE Dies TRA LRA WATTS FLA TvPE Max Max EFF at Full Load FLA MIN MAX WATTS AMP Draw STD 2615 79 8196 75 208 3 60 187 253 190 123 224 149 1288 62 MED 3775 10 5 81 10 0 HIGH 4400 15 0 81 15 0 STD 2615 7 9 81 75 230 3 60 187 253 190 123 224 149 1288 62 MED 3775 10 5 8196 10 0 HIGH 4400 15 0 8196 15 0 STD 2615 3 6 8196 34 460 3 60 414 506 97 62 10 6 75 1288 31 MED 3775 4 6 8196 4 4 HIGH 4400 74 8196 74 STD 3775 29 8196 2 8 575 3 60 518 633 74 50 73 54 1288 2 5 MED 3775 2 9 8196 2 8 HIGH 4400 5 9 8196 5 6 83 50TC APPENDIX IV ELECTRICAL DATA cont MCA MOCP DETERMINATION NO C O OR UNPWRD C O N ELECTRIC HEATER NO or UNPWRD E 4 IFM NO PE w fr unit 2x e TYPE Nom FLA DISC SIZE DISC SIZE z kw MCA MOCP MCA MOCP 9 FLA LRA FLA LRA z 5 39 5 60 38 191 43 3 60 43 195 7 8 10 4 217 25 0 39 5 39 5 60 60 38 38 191 191 433 433 60 60 43 43 195 195 12 0 16 0 3344385 483546 60 60 44 50 191 191 53 0 59 4 60 60 49 55 195 195 STD 1
44. MP Controls Start Up Operation and Troubleshooting Instructions Form 48 50H T 2T Appendix for display tables Unit Start Delay This refers to the time delay the unit will wait after power up before it pursues any specific operation Factory Default 5 sec Range 0 600 sec 61 50TC Filter Service Hours This refers to the timer set for the Dirty Filter Alarm After the number of runtime hours set on this point is exceeded the corresponding alarm will be generated and must be manually cleared on the alarm reset screen after the maintenance has been completed The timer will then begin counting its runtime again for the next maintenance interval Factory Default 600 hr NOTE Setting this configuration timer to 0 disables the alarm Supply Fan Service Hours This refers to the timer set for the Supply Fan Runtime Alarm After the number of runtime hours set on this point is exceeded the corresponding alarm will be generated and must be manually cleared on the alarm reset screen after the maintenance has been completed The timer will then begin counting its runtime again for the next maintenance interval Factory Default 0 hr NOTE Setting this configuration timer to 0 disables the alarm Compressor1 Service Hours This refers to the timer set for the Compressor 1 Runtime Alarm After the number of runtime hours set on this point is exceeded the corresponding alarm will be generated and must be man
45. N C Input 8 or 9 is recommended for easy of installation Refer to Fig 54 and Fig 55 for wire terminations at J5 Remote Occupancy The remote occupancy accessory is a field installed accessory This accessory overrides the unoccupied mode and puts the unit in occupied mode When installing this accessory the unit must be configured for remote occupancy by setting MENU Config Inputs input 3 5 8 or 9 to Remote Occupancy and normally open N O or normally closed N C Also set MENU Schedules occupancy source to DI on off Input 8 or 9 is recommended for easy of installation Refer to Fig 54 and Fig 55 and Table 12 for wire terminations at J5 Power Exhaust Output Connect the accessory Power Exhaust contactor coil s per Fig 62 Power Exhaust LCTB THERMOSTAT GRA C08464 Fig 62 RTU MP Power Exhaust Connections Space Relative Humidity Sensor The RH sensor is not used with 50TC models at this time Communication Wiring Protocols General Protocols are the communication languages spoken by contro devices The main purpose of a protocol is to communicate information in the most efficient method possible Different protocols exist to provide different kinds of information for different applications In the BAS application many different protocols are used depending on manufacturer Protocols do not change the function of a controller just make the front end user different The R
46. RTU MP is receiving data from the network segment Tx The RTU MP is transmitting data over the network segment DO The digital output is active The Run and Error LEDs indicate control module and network status If Run LED shows And Error LED shows Status is 2 flashes per second Off Normal S flashes per s cond 2 flashes Five minute auto restart delay after alternating with Run LED System error gt flashes Det second 3 flashes Control module has just been P then off formatted 5 nl GshBe per second 4 flashes Two or more devices on this network P then pause have the same ARC156 network address adiastiss per s cond On Exec halted after frequent system errors p or control programs halted 5 flashes per second On Exec start up aborted Boot is running 5 flashes per second Off Firmware transfer in progress Boot is running 7 flashes per second 7 flashes per second alternating with Run LED Ten second recovery period after brownout 14 flashes per second 14 flashes per second alternating with Run LED Brownout On On Failure Try the following solutions e Turn the RTU MP off then on e Format RTU MP e Download memory to the RTU MP e Replace the RTU MP 42 Table 14 Troubleshooting Alarms BACnet ACTION TAKEN BY RESET POINT NAME AME CONTROL METHOD PROBABLE CAUSE Alarm Ge
47. TR x RA To Outdoor Air Temperature OA Percent of Outdoor Air Tg Return Air Temperature RA Percent of Return Air TM Mixed Air Temperature As an example if local codes require 1076 outdoor air during occupied conditions outdoor air temperature is 60 F and return air temperature is 75 F 60 x 10 75 x 90 73 5 F 2 Disconnect the supply air sensor from terminals T and T1 3 Ensure that the factory installed jumper is in place across terminals P and Pl If remote damper positioning is being used make sure that the terminals are wired according to Fig 50 and that the minimum position potentiometer is turned fully clockwise 4 Connect 24 vac across terminals TR and TR1 5 Carefully adjust the minimum position potentiometer until the measured mixed air temperature matches the calculated value 6 Reconnect the supply air sensor to terminals T and Remote control of the EconoMi er IV damper is desirable when requiring additional temporary ventilation If a field supplied remote potentiometer Honeywell part number S963B1128 is wired to the EconoMi er IV controller the minimum position of the damper can be controlled from a remote location To control the minimum damper position remotely remove the factory installed jumper on the P and P1 terminals on the EconoMi er IV controller Wire the field supplied potentiometer to the P and P1 terminals on the EconoMi er IV controller See Fig 77
48. Tee C06038 Fig 77 EconoMi er IV Control Differential Enthalpy Control For differential enthalpy control the EconoMi er IV controller uses two enthalpy sensors 57 078 and CRENTDIF004A00 one in the outside air and one in the retum air duct The EconoMi er IV controller compares the outdoor air enthalpy to the return air enthalpy to determine EconoMi er IV use The controller selects the lower enthalpy air return or outdoor for cooling For example when the outdoor air has a lower enthalpy than the return air the EconoMi er IV opens to bring in outdoor air for free cooling Replace the standard outside air dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location See Fig 66 Mount the return air enthalpy sensor in the return air duct See Fig 75 Wiring is provided in the EconoMi er IV wiring harness See Fig 66 The outdoor enthalpy changeover setpoint is set with the outdoor enthalpy setpoint potentiometer on the EconoMi er IV controller When using this mode of changeover control turn the enthalpy setpoint potentiometer fully clockwise to the D setting Indoor Air Quality IAQ Sensor Input The IAQ input can be used for demand control ventilation control based on the level of CO2 measured in the space or return air duct Mount the accessory IAQ sensor according to manufacturer specifications The IAQ sensor s
49. a special Single Point Boxes without fuses The accessory Single Point Boxes contain a terminal block and a set of power taps to complete the wiring between the Single Point Box and the unit s main control box terminals Refer to accessory heater and Single Point Box installation instructions for details on tap connections Safety Devices Electric heater applications use a combination of line break auto reset limit switches and a pilot circuit manual reset limit switch to protect the unit against over temperature situations Line break auto reset limit switches are mounted on the base plate of each heater module See Fig 33 These are accessed through the indoor access panel Remove the switch by removing two screws into the base plate and extracting the existing switch Pilot circuit manual reset limit switch is located in the side plate of the indoor supply fan housing See Fig 30 Line Break Limit Switches C08330 Fig 33 Typical Location of Heater Limit Switches 3 phase heater shown Low Voltage Control Connections Pull the low voltage control leads from the heater module s VIO and BRN two of each if two modules are installed identify for Module 1 to the 4 pole terminal board TB4 located on the heater bulkhead to the left of Heater 1 Connect the VIO lead from Heate
50. across T and T1 The actuator should drive fully closed Return IV settings and wiring to normal after completing troubleshooting EconoMi er IV Troubleshooting Completion This procedure is used to return the EconoMi er IV to operation No troubleshooting or testing is done by performing the following procedure 1 27 Disconnect power at TR and Set enthalpy potentiometer to previous setting 10 11 Remove Set maximum position potentiometer to previous setting Set minimum position DCV setpoint and exhaust potentiometers to previous settings Remove 620 ohm resistor from terminals SR and 1 2 kilo ohm checkout resistor from terminals SO and If used reconnect sensor from terminals SO and Remove jumper from TR to N Remove jumper from TR to 1 Remove 5 6 kilo ohm resistor from T and Reconnect wires at T and 1 Remove jumper from P to P1 Reconnect device at P and Apply power 24 vac to terminals TR and WIRING DIAGRAMS See Fig 80 and Fig 81 for typical wiring diagrams 56 Triopraccy C2 HH RED 1 BiK GD Ka i CLO2 BRN 4 3 YEL V YEL ORN 12 YEL OFR BLKA H BLK
51. bad senses Ad oaq_alarm OAQ to 400 Automat wiring or sensor configured incorrectly ee Dioxide co2_hi Alarm Generated Automatic CO2 reading is above 1200ppm 00 Pam e sf rntm Alarm Generated 2 me Supply fan run time exceeded user defined limit em ressor 1 Runtime dx1_rntm Alarm Generated ud the Compressor run time limit is exceeded Compressor 2 Runtime clear the uu Alarm dx2 rntm Alarm Generated timer Compressor run time limit is exceeded 43 50TC Alarms Alarms can be checked through the network and or the local access All the alarms are listed in Table 14 with name object name action taken by control reset method and probable cause There are help screens for each alarm on the local access display and listed in RTU MP Controls Start Up Operation and Troubleshooting Instructions Form 48 50H T 2T Appendix A Help Screens Some alarms are explained in detail below Safety Chain Alarm This alarm occurs immediately if the supply fan internal overload trips or if an electric heat limit switch trips The Unit Status will be Shutdown and the System Mode will be Disable When this happens LCTB R terminal will not have 24 VAC but the RTU MP board will still be powered All unit operations stop immediately and will not restart until the alarm automatically clears There are no configurations for this alarm it is all based on internal wiring This alarm will never occur if Fire Shutdown Alarm is active Fir
52. be verified and maybe changed according to unit location and time zone Factory Default Eastern Standard Time USERPW This submenu screen allows you to change the user password to a four number password of choice The User password change screen is only accessible with the Administrator Password 1111 The ADMIN password will always override the user password OPERATING SEQUENCE Base Unit Controls Cooling Unit Without Economizer When thermostat calls for Stage 1 cooling terminals G and Y1 are energized The indoor fan contactor IFC outdoor fan contactor OFC and Compressor 1 contactor C1 are energized and indoor fan motor outdoor fan and Compressor 1 start The outdoor fan motor runs continuously while unit is in Stage 1 or Stage 2 cooling 008 and D12 units have two outdoor fans both run while unit is in Stage 1 or Stage 2 cooling If Stage 1 cooling does not satisfy the space load the space temperature will rise until thermostat calls for Stage 2 cooling Y2 closes Compressor 2 contactor C2 is energized Compressor 2 starts and runs Heating Unit Without Economizer When the thermostat calls for heating Terminal W1 will be energized with 24v The IFC and heater contactor No 1 are energized Indoor fan motor starts electric heater module No 1 is energized If Stage 1 heating does not satisfy the space load the space temperature will drop until thermostat calls for Stage 2 heating W2 Closes Hea
53. calculated as follows IAOS 400 ppm if not present As air quality within the space changes the minimum position of the economizer damper will be changed also thus allowing more or less outdoor air into the space depending on the relationship of the IAOI to the IAOS The IAQ algorithm runs every 30 seconds and calculates IAQ minimum position value using a PID loop on the IAOI deviation from the IAOS The IAO minimum position is then compared against the user configured minimum position MDP and the greatest value becomes the final minimum damper position IOMP If the calculated IAO Minimum Position is greater than the IAQ maximum damper position decision in the SERVICE configuration table then it will be clamped to IAOMAXP value If IAQ is configured for low priority the positioning of the economizer damper can be overridden by comfort requirements If the SAT SASP 8 F and both stages of heat are on for more then 4 minutes or the SAT gt SASP 5 F and both stages of cooling on for more then 4 minutes then the minimum damper position will become 0 and the IAQ mode will resume when the SAT gt SASP 8 F in heating or the SAT SASP 5 F in cooling 66 If the PremierLink controller is configured for 1 stage of heat and cool or is only using a single stage thermostat input this function will not work as it requires the both 1 and Y2 or W1 and W2
54. can only be used at the unit Connect the BACview to the RTU MP s J12 local access port There are 2 password protected levels in the display User and Admin The user password is defaulted to 0000 but can be changed The Admin password is 1111 and cannot be changed There is a 10 minute auto logout if a screen is left idle See RTU MP Controls Start Up Operation and Troubleshooting Instructions Form 48 50H T 2T Appendix A for navigation and screen content Virtual BACview Virtual BACview is a freeware computer program that functions as the BACview Handheld The USB Link interface USB L is required to connect a computer to the RTU MP board The link cable connects a USB port to the J12 local access port This program functions and operates identical to the handheld RTU MP Troubleshooting Communication LEDs The LEDs indicate if the controller is speaking to the devices on the network The LEDs should reflect communication traffic based on the baud rate set The higher the baud rate the more solid the LEDs will appear 41 50TC BACview 5 K ANCE L INCR 1 916 e Cable Protocol Selector RTU MP Local Access Cable C07170 Fig 64 BACview Handheld Connections Table 13 LEDs The LEDs on the RTU MP show the status of certain functions If this LED is on Status is Power The RTU MP has power Rx The
55. clean that sensor assembly as described in the detector cleaning section Sensor s Trouble LED is On 1 Check the sensor s Dirty LED If it is flashing the sensor is dirty and must be cleaned 21 50TC 2 Check the sensor s cover If it is loose or missing secure the cover to the sensor housing 3 Replace sensor assembly Sensor s Power LED is Off 1 Check the controller s Power LED If it is off determine why the controller does not have power and make the necessary repairs 2 Check the wiring between the sensor and the controller If wiring is loose or missing repair or replace as required Controller s Power LED is Off 1 Make sure the circuit supplying power to the controller is operational If not make sure JP2 and JP3 are set correctly on the controller before applying power 2 Verify that power is applied to the controller s supply input terminals If power is not present replace or repair wiring as required Remote Test Reset Station s Trouble LED Does Not Flash When Performing a Dirty Test But the Controller s Trouble LED Does 1 Verify that the remote test station is wired as shown in Fig 26 Repair or replace loose or missing wiring 2 Configure the sensor dirty test to activate the controller s supervision relay See Changing sensor dirty test operation Sensor s Trouble LED is On But the Controller s Trouble LED is OFF Remove JP1 on the controller PROTECTIVE DEVICES
56. connection strip for these Connect the thermostat s Y1 Y2 W1 W2 and terminals to PremierLink as shown in Fig 42 SPACE LCTB THERMOSTAT THERMOSTAT TB1 PL gt GD Gy 6 lt 2 c gt 1 THERMOSTAT C08119 Fig 42 Space Thermostat Connections If the SOTC unit is equipped with factory installed smoke detector s disconnect the factory BLU lead at TB1 6 Y2 before connecting the thermostat Identify the BLU lead originating at LCTB DDC 1 disconnect at TB1 6 and tape off Confirm that the second BLU lead at TB1 6 remains connected to PremierLink J4 8 30 If the SOTC unit has an economizer system and free cooling operation is required a sensor representing Return Air Temperature must also be connected field supplied and installed This sensor may be a T 55 Space Sensor installed in the space or in the return duct or it may be sensor PNO 33ZCSENSAT installed in the return duct See Fig 38 Connect this sensor to TB1 1 and 1 3 per Fig 39 Temperature resistance characteristic is found in Table 6 Configure the Unit for Thermostat Mode Connect to the CCN bus using a CCN service tool and navigate to PremierLink Configuration screen for Operating Mode Default setting is Sensor Mode value 1 Change the value to 0 to reconfigure the controller for Thermostat Mode When the PremierLink is configured for Thermostat M
57. garden hose against a surface loaded coil will drive the fibers and dirt into the coil This will make cleaning efforts more difficult Surface loaded fibers must be completely removed prior to using low velocity clean water rinse Periodic Clean Water Rinse A periodic clean water rinse is very beneficial for coils that are applied in coastal or industrial environments However it is very important that the water rinse is made with very low velocity water stream to avoid damaging the fin edges Monthly cleaning as described below is recommended Routine Cleaning of NOVATION Condenser Coil Surfaces To clean the NOVATION condenser coil chemicals are NOT to be used only water is approved as the cleaning solution Only clean potable water is authorized for cleaning NOVATION condensers Carefully remove any foreign objects or debris attached to the coil face or trapped within the mounting frame and brackets Using a high pressure water sprayer purge any soap or industrial cleaners from hose and or dilution tank prior to wetting the coil Clean condenser face by spraying the coil core steadily and uniformly from top to bottom directing the spray straight into or toward the coil face Do not exceed 900 psig or a 45 degree angle nozzle must be at least 12 in 30 cm from the coil face Reduce pressure and use caution to prevent damage to air centers fins Do not fracture the braze between air centers and refrigerant tubes Allow wate
58. inputs to be active In this application it is recommended that the user configure IAQ priority for high If IAQ is configured for high priority and the OAT lt 55 F and the SAT lt SPT 10 F the algorithm will enable the heat stages to maintain the SAT between the SPT and the SPT 10 F CCN Sensor Mode When the PremierLink controller is configured for CCN control it will control the compressor economizer and heating outputs based its own space temperature input and setpoints or those received from Linkage An optional CO IAQ sensor mounted in the space or received through communications can also influence the economizer and heating outputs The PremierLink controller does not have a hardware clock so it must have another device on the CCN communication bus broadcasting time controller will maintain its own time once it has received time as long as it has power and will send a request for time once a minute until it receives time when it has lost power and power is restored The controller will control to unoccupied setpoints until it has received a valid time The controller must have valid time in order to perform any broadcast function follow an occupancy schedule perform IAQ pre occupancy purge and many other functions as well The following sections describe the operation for the functions of the PremierLink controller Indoor Fan The indoor fan will be turned on whenever any one of the following conditions a
59. its operating location and the tubing to the sampling tube be connected See installation steps Return Air Sampling Tube 08129 Fig 22 Return Air Sampling Tube Location EXHAUST TUBE FLEXIBLE EXTENSION TUBE SAMPLING 08126 Fig 23 Return Air Detector Shipping Position Completing Installation of Return Air Smoke Sensor 1 Unscrew the two screws holding the Return Air Sensor detector plate See Fig 23 Save the screws 2 Remove the Return Air Sensor and its detector plate 3 Rotate the detector plate so the sensor is facing outwards and the sampling tube connection is on the bottom See Fig 24 4 Screw the sensor and detector plate into its operating position using screws from Step 1 Make sure the sampling tube connection is on the bottom and the exhaust tube is on the top See Fig 24 5 Connect the flexible tube on the sampling inlet to the sampling tube on the basepan 6 For units with an economizer the sampling tube is integrated into the economizer housing but the connection of the flexible tubing to the sampling tube is the same C08127 Fig 24 Return Air Sensor Operating Position FIOP Smoke Detector Wiring and Response Units FIOP smoke detector is configured to automatically shut down all unit operations when smoke condition is detected See Fig 25 Smoke Detector Wiring Highlight A JMP 3 is factory cut transferring unit control to smoke detector Hig
60. options and operation are also discussed in this section Field Service Test The Field Service Test function can be used to verify proper operation of compressors heating stages indoor fan power exhaust fans economizer and dehumidification Use of Field Service Test is recommended at initial system start up and during troubleshooting See RTU MP Controls Start Up Operation and Troubleshooting Instructions Form 48 50H T 2T Appendix for Field Service Test Mode table Field Service Test mode has the following changes from normal operation Outdoor air temperature limits for cooling circuits economizer and heating are ignored Normal compressor time guards and other staging delays are ignored The status of Alarms except Fire and Safety chain is ignored but all alerts and alarms are still broadcasted on the network Field Service Test can be turned ON OFF at the unit display or from the network Once turned ON other entries may be made with the display or through the network To turn Field Service Test on change the value of Test Mode to ON to turn Field Service Test off change the value of Test Mode to OFF NOTE Service Test mode is password protected when accessing from the display Depending on the unit model factory installed options and field installed accessories some of the Field Service Test functions may not apply The independent outputs IndpOutputs submenu is used to change output statu
61. pitch diameter to reduce wheel speed smaller pitch diameter to increase wheel speed or select a new system both pulleys and matching belt s Before changing pulleys to increase fan wheel speed check the fan performance at the target speed and airflow rate to determine new motor loading bhp Use the fan performance tables or use the Packaged Rooftop Builder software program Confirm that the motor in this unit is capable of operating at the new operating condition Fan shaft loading increases dramatically as wheel speed is increased To reduce vibration replace the motor s adjustable pitch pulley with a fixed pitch pulley after the final airflow balance adjustment This will reduce the amount of vibration generated by the motor belt drive system COOLING WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury death and or equipment damage This system uses Puron refrigerant which has higher pressures than R 22 and other refrigerants No other refrigerant may be used in this system Gauge set hoses and recovery system must be designed to handle Puron refrigerant If unsure about equipment consult the equipment manufacturer Condenser Coil The condenser coil is new NOVATION Heat Exchanger Technology This is an all aluminum construction with louvered fins over single depth crosstubes The crosstubes have multiple small passages through which the refrigerant pas
62. present on the G input The indoor fan will be turned on without any delay and the economizer damper will open to its minimum position if the unit has a damper connected to the controller This will also occur if the PremierLink controller has been configured for electric heat or heat pump operation Cooling For cooling operation there must be 24 vac present on G When G is active the PremierLink controller will then determine if outdoor conditions are suitable for economizer cooling when an economizer damper is available A valid OAT SPT CCN space temperature and SAT supply air temperature sensor MUST be installed for proper economizer operation It recommended that an outdoor or differential enthalpy sensor also be installed If one is not present then a jumper is needed on the ENTH input on J4 which will indicate that the enthalpy will always be low Economizer operation will be based only on outdoor air dry bulb temperature The conditions are suitable when enthalpy is low OAT is less than OATL High Lockout for TSTAT and OAT is less than OATMAX the high setpoint for free cooling The default for OATL is 65 F The default for OATMAX is 75 F When all of the above conditions are satisfied and all the required sensors are installed the PremierLink controller will use the economizer for cooling One of three different control routines will be used depending on the temperature of the outside air The routines use a PID loop t
63. relay Replace component Insufficient line voltage Determine cause and correct Incorrect or faulty wiring Check wiring diagram and rewire correctly Thermostat setting too high Lower thermostat setting below room temperature Compressor Will Not Start But Condenser Fan Runs Faulty wiring or loose connections in compressor circuit Check wiring and repair or replace Compressor motor burned out seized or internal overload open Determine cause Replace compressor Defective run start capacitor overload start relay Determine cause and replace One leg of three phase power dead Replace fuse or reset circuit breaker Determine cause Compressor Cycles other than normally satisfying thermostat Refrigerant overcharge or undercharge Recover refrigerant evacuate system and recharge to nameplate Defective compressor Replace and determine cause Insufficient line voltage Determine cause and correct Blocked condenser Determine cause and correct Defective run start capacitor overload or start relay Determine cause and replace Defective thermostat Replace thermostat Faulty condenser fan motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor Operates Continuously Dirty air filter Replace filter Unit undersized for load Decrease
64. setpoint and 100 open With SAT from 50 F to 45 F the dampers will maintain at the Minimum Position setting With SAT below 45 F the outside air dampers will be closed When SAT rises to 48 F the dampers will re open to Minimum Position setting Should 100 outside air not be capable of satisfying the space temperature space temperature will rise until Y2 is closed The economizer control will call for compressor operation Dampers will modulate to maintain SAT at 50 to 55 F concurrent with Compressor 1 operation The Low Ambient Lockout Thermostat will block compressor operation with economizer operation below 42 F outside air temperature When space temperature demand is satisfied thermostat Y1 opens the dampers will return to Minimum Damper position if indoor fan is running or fully closed if fan is off If accessory power exhaust is installed the power exhaust fan motors will be energized by the economizer control as the dampers open above the PE On setpoint and will be de energized as the dampers close below the PE On setpoint Damper movement from full closed to full open or vice versa will take between 1 1 2 and 2 1 2 minutes Heating With EconoMi er IV During Occupied mode operation indoor fan operation will be accompanied by economizer dampers moving to Minimum Position setpoint for ventilation If indoor fan is off dampers will close During Unoccupied mode operation dampers will remain closed unless a D
65. switch 07298 Fig 28 Controller Assembly NOTE All troubles are latched by the duct smoke detector The trouble condition must be cleared and then the duct smoke detector must be reset in order to restore it to the normal state Resetting Alarm and Trouble Condition Trips Manual reset is required to restore smoke detector systems to Normal operation For installations using two sensors the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition Check each sensor for Alarm or Trouble status indicated by LED Clear the condition that has generated the trip at this sensor Then reset the sensor by pressing and holding the reset button on the side for 2 seconds Verify that the sensor s Alarm and Trouble LEDs are now off At the controller clear its Alarm or Trouble state by pressing and holding the manual reset button on the front cover for 2 seconds Verify that the controller s Alarm and Trouble LEDs are now off Replace all panels Troubleshooting Controller s Trouble LED is On 1 Check the Trouble LED on each sensor connected to the controller If a sensor s Trouble LED is on determine the cause and make the necessary repairs 2 Check the wiring between the sensor and the controller If wiring is loose or missing repair or replace as required Controller s Trouble LED is Flashing 1 One or both of the sensors is 100 dirty 2 Determine which Dirty LED is flashing then
66. the fan and the unit will operate as though it is in occupied state Once set Temperature Compensated Start mode will stay on until the unit returns to occupied state If either Unoccupied Free Cool or IAQ Pre Occupancy mode is active when Temperature Compensated Start begins their mode will end Door Switch The Door Switch function is designed to disable mechanical heating and cooling outputs when the REMOCC contact input is closed in the ON state after a programmed time delay The fan will continue to operate based on the current mode and the ASHRAE 90 1 Supply Fan setting The delay is programmable from 2 to 20 minutes by setting the Remote Cont Door Switch decision in the SERVICE table to a value equal to the number of minutes desired When the contact is open in the OFF state the PremierLink controller will resume normal temperature control This application is designed for use in schools or other public places where a door switch can be installed to monitor the opening of a door for an extended period of time The controller will disable mechanical cooling and heating when the door is open for a programmed amount of time This function can also be used to monitor a high condensate level switch when installed on a water source heat pump to disable mechanic cooling in case of a plugged evaporator condensate pan drain Linkage The Linkage function in the PremierLink controller is available for applications using a Linkag
67. the same time to pull up a Modstat Scroll to the bottom of the page and there is a section entitled Network Communications The active protocol and baud rate will be shown in this section 2 Verify that the BAS and controller are set for the same baud rate The baud rate of the controller is set via SW3 switches 1 and 2 The baud rate can also be verified via the BACview by obtaining a Modstat See Fig 65 3 Verify that the BAS is configured to speak 2 wire EIA 485 to the controller The BAS may have to configure jumper or DIP switches on their end 4 Verify that the BAS and the controller have the same communication settings 8 data bits No Parity and 1 stop bit 5 Verify that the controller has a unique MAC address on the MS TP bus The controller s MS TP MAC address is set by its rotary address switches 6 Verify proper wiring between the BAS and the controller 7 Verify that the BAS is reading or writing to the proper BACnet objects in the controller Download the latest points list for the controller to verify 8 Verify that the BAS is sending his requests to the proper MS TP MAC address of our controller 9 Present the BAS company with a copy of our controller s BACnet PICS so that they know which BACnet commands are supported 44 Device Instance 0160001 1 PRGs loaded 1 PRGs running Module status Firmware sections validated in flash memory Boot16 H RTU MP DRIVER v2 06 001 v2 09 05
68. two of the unit power leads siendo 4 Reapply power to the compressor The suction and discharge pressure levels should now move to their normal start up levels NOTE When the compressor is rotating in the wrong direction the unit makes an elevated level of noise and does not provide cooling Filter Drier Replace whenever refrigerant system is exposed to atmosphere Only use factory specified liquid line filter driers with working pressures no less than 650 psig Do not install a suction line filter drier in liquid line A liquid line filter drier designed for use with Puron refrigerant is required on every unit Condenser Fan Location See Fig 14 1 Shut off unit power supply Install lockout tag 2 Remove condenser fan assembly grille motor and fan 3 Loosen fan hub setscrews 4 Adjust fan height as shown in Fig 14 5 Tighten setscrews to 84 in Ibs 9 5 Nm 6 Replace condenser fan assembly 7 C08448 Fig 14 Condenser Fan Adjustment Troubleshooting Cooling System Refer to Table 1 for additional troubleshooting topics 12 Table 1 Cooling Service Analysis PROBLEM CAUSE REMEDY Compressor and Condenser Fan Will Not Start Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective thermostat contactor transformer or control
69. z 827 120 z z o o kw 9 rt o o 5 5 a a 690 100 621 90 552 80 30 40 50 60 70 80 90 SUCTION LINE TEMP F 1 4 10 16 21 21 32 SUCTION LINE TEMP C 48TM501378 Fig 12 Cooling Charging Chart 014 Circuit 1 014 12 5 TON CIRCUIT 2 CHARGING CHART R410A REFRIGERAN 1241 180 OUTDOOR TEMP AE JC 115 46 1103 160 881 35 85 29 15 24 2 2 65 18 a 5 55 13 965 t 140 45 41 M M a a e 827 e 120 2 a 5 5 2 690 100 E 5 552 80 _ 414 60 30 40 50 60 70 80 90 SUCTION LINE TEMP F 1 4 10 16 21 21 32 SUCTION LINE TEMP 48TM501547 Fig 13 Cooling Charging Chart 014 Circuit 2 11 C09151 C09152 50TC Compressor Rotation On 3 phase units with scroll compressors it is important to be certain compressor is rotating in the proper direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gauges to suction and discharge pressure fittings 2 Energize the compressor 3 The suction pressure should drop and the discharge pressure should rise as is normal on any start up NOTE If the suction pressure does not drop and the discharge pressure does not rise to normal levels ees 1 Note that the evaporator fan is probably also rotating in the wrong direction NCC 2 Turn off power to the unit Rus 3 Reverse any
70. 0 Jun 19 2007 Jun 26 2007 Reset counters 11 Power failures 0 Brownouts 18 Commanded warm boots 22 Commanded cold boots 0 System errors 0 Watchdog timeouts System error message history Warning message history Information message history POWERUP BACnet reinitialize warmstart Menu file not found ARC156 reconfigurations during the last hour ee nex Initiated by this node Core board hardware Type 147 board 34 manufactured on 05 14 RAM 1024 kBytes FLASH 1024 kBytes Base board hardware type Type Specific 06 29 07 10 49 40 06 29 07 10 48 35 cleared upon reset 2007 S N 21A740188N 3 Type 147 board 71 manufactured on 05 14 2007 S N RMP750037N Largest free heap space 65536 Database size 742082 used 352162 free Raw physical switches 0x01280000 Module Communications Network Protocol BACnet MSTP Master Network Baud Rate 9600 bps 389920 C07195 Fig 65 Module Status Report Modstat Example 10 In certain situations it may be necessary to tweak the MS TP Protocol timing settings through the BACview There are two settings that may be tweaked Max Masters Defines the highest MS TP Master MAC address on this MS TP network For example if there are 3 master nodes on an MS TP network and their MAC addresses are 1 8 and 16 then Max Masters would be set to 16 since this is the highest 45 MS TP MAC address on the network Thi
71. 0 480 Splice BLU 4 YEL H2 H3 L2 GRA H4 L1 RED H1 pe 600 2 GRA H2 Fig 17 Powered Convenience Outlet Wiring Duty Cycle The unit powered convenience outlet has a duty cycle limitation The transformer is intended to provide power on an intermittent basis for service tools lamps etc it is not intended to provide 15 amps loading for continuous duty loads such as electric heaters for overnight use Observe a 50 limit on circuit loading above 8 amps 1 limit loads exceeding 8 amps to 30 minutes of operation every hour Maintenance Periodically test the GFCI receptacle by pressing the TEST button on the face of the receptacle This should cause the internal circuit of the receptacle to trip and open the receptacle Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as required Press the RESET button to clear the tripped condition Fuse On Powered Type The factory fuse is a Bussman Fusetron T 15 non renewable screw in Edison base type plug fuse Using Unit Mounted Convenience Outlets Units with unit mounted convenience outlet circuits will often require that two disconnects be opened to de energize all power to the unit Treat all units as electrically energized until the convenience outlet power is also checked and de energization is confirmed Observe National Electrical Code Article 210 Branch Circuits for use of convenience outlets
72. 1 or 2 This value is displayed and used when 4mA is seen at the input Factory Default 0 PPM Range 0 400 PPM IAQ High Reference 20mA This is used when an IAQ sensor is installed on Input 1 or 2 This value is displayed and used when 20mA is seen at the input Factory Default 2000 PPM Range 0 5000 PPM NOTE IAQ low Reference 4mA and IAQ High Reference 20mA are used to set the linear curve of mA vs PPM Low Reference 4mA This is used when an OAQ sensor is installed on Input 1 or 2 This value is displayed and used when 4mA is seen at the input Factory Default 0 PPM Range 0 400 PPM OAQ High Reference 20mA This is used when an OAQ sensor is installed on Input 1 or 2 This value is displayed and used when 20mA is seen at the input Factory Default 2000 PPM Range 0 5000 PPM NOTE low Reference 4mA and High Reference 20mA are used to set the linear curve of mA vs PPM Economizer Economizer Exists This point tells the controller if there is an economizer installed on the unit Factory Default NO if no economizer YES if there is an economizer installed Economizer Minimum Position This defines the lowest economizer position when the indoor fan is running and the building is occupied Factory Default 20 Range 0 100 46 Economizer High OAT Lockout If the outdoor air temperature rises above this value economizer cooling will be disabled and dampers will return and stay at m
73. 104 2 120 3 149 0 139 1 150 175 137 156 315 315 153 8 143 8 175 175 141 160 319 319 E 25 1 30 24 188 26 9 40 26 185 13 9 16 7 25 1 30 24 133 26 9 40 26 135 TE 16 5 19 8 28 0 30 26 133 30 3 40 28 135 33 0 39 7 52 9 60 49 133 55 1 60 51 135 a 417 50 2 66 0 70 61 133 68 3 70 63 135 50 0 60 1 63 4 70 72 133 65 6 70 74 135 E 26 9 40 26 155 28 7 45 28 157 Bg 13 9 16 7 26 9 40 26 155 28 7 45 28 157 16 5 19 8 30 3 40 28 155 32 5 45 30 157 zi 33 0 39 7 55 1 60 51 155 57 4 60 53 157 417 50 2 68 3 70 63 155 70 5 80 65 157 50 0 60 1 65 6 80 74 155 67 9 80 76 157 E 29 9 45 30 159 317 45 32 161 13 9 16 7 30 1 45 30 159 324 45 32 161 us 165 19 8 34 0 45 31 159 36 3 45 33 161 33 0 39 7 58 9 60 54 159 70 56 161 417 50 2 72 0 80 66 159 743 80 68 161 50 0 60 1 69 4 80 78 159 716 80 80 161 E 18 5 30 18 95 223 30 22 99 Sr 17 0 20 4 28 0 30 26 95 32 8 35 30 99 34 0 40 9 53 6 60 49 95 58 4 60 54 99 51 0 613 63 8 70 73 95 68 6 80 77 99 g 19 3 30 19 106 23 1 30 23 110 age 17 0 204 29 0 30 27 106 33 8 35 31 110 34 0 40 9 54 6 60 50 106 59 4 60 55 110 S 51 0 61 3 64 8 70 74 106 69 6 80 78 110 2241 30 22 120 25 9 30 26 124 17 0 204 32 5 35 30 120 37 3 40 34 124 D GMT 40 9 58 1 60 53 120 62 9 70 58 124 51 0 61 3 68 3 80 7 120 731 80 81 124 Nominal valves listed as 208 240V 480V or 600V as appropriate See Legend and calculations 85 50TC MCA MOCP DETERMINATION
74. 1129 3 77 4688 1018 1128 4 04 1162 4 29 5000 1056 1162 5313 1094 5625 5938 6250 NOTE For more information see General Fan Performance Notes Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AK012 and belt part no KR29AE055 2 Recommend using field supplied fan pulley part KR11AZ002 motor pulley part no KR11HY310 and belt part no KR29AF054 81 50TC APPENDIX III FAN PERFORMANCE cont Pulley Adjustment UNIT MOTOR DRIVE MOTOR PULLEY TURNS OPEN COMBO 00 05 10 15 20 25 35 40 45 50 Standard Static 747 721 695 670 644 618 592 566 541 515 489 2 8 Medium Static 949 927 906 884 863 841 819 798 776 755 733 High Static 1102 1083 1063 1044 1025 1006 986 967 948 928 909 Standard Static 838 813 789 764 739 715 690 665 640 616 591 8 Medium Static 1084 1059 1035 1010 986 961 936 912 887 863 838 High Static 1240 1218 1196 1175 1153 1131 1109 1087 1066 1044 1022 Standard Static 838 813 789 764 739 715 690 665 640 616 591 X 8 Medium Static 1084 1059 1035 1010 986 961 936 912 887 863 838 is High Static 1240 1218 1196 1175
75. 120 seconds after the Exhaust LED turns on Return IV settings and wiring to normal after completing troubleshooting DCV Minimum and Maximum Position To check the DCV minimum and maximum position 55 1 Turn Make sure EconoMi er IV preparation procedure has been performed Connect 9 v battery to AQ positive node and 1 negative node The DCV LED should turn on The actuator should drive to between 90 and 9546 open Turn the DCV Maximum Position potentiometer to midpoint The actuator should drive to between 20 and 8046 open Turn the DCV Maximum Position potentiometer to fully CCW The actuator should drive fully closed the Minimum Position potentiometer to midpoint The actuator should drive to between 20 and 80 open Turn the Minimum Position Potentiometer fully CW The actuator should drive fully open Remove the jumper from TR and N The actuator should drive fully closed Return IV settings and wiring to normal after completing troubleshooting 50TC Supply Air Sensor Input To check supply air sensor input 1 Make sure EconoMi er IV preparation procedure has been performed Set the Enthalpy potentiometer to A The Free Cool LED turns on The actuator should drive to between 20 and 80 open Remove the 5 6 kilo ohm resistor and jumper T to T1 The actuator should drive fully open Remove the jumper
76. 170 I eee eas a AINO and 180553 33v E x 1902 CUYOS TWNINY3L 2106 58 PRE START UP WARNING PERSONAL INJURY HAZARD Failure to follow this warning could result in personal injury or death 1 Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system Do not operate compressor or provide any electric power to unit unless compressor terminal cover is in place and secured Do not remove compressor terminal cover until all electrical sources are disconnected Relieve all pressure from system before touching or disturbing anything inside terminal box if refrigerant leak is suspected around compressor terminals Never attempt to repair soldered connection while refrigerant system is under pressure Do not use torch to remove any component System contains oil and refrigerant under pressure To remove a component wear protective goggles and proceed as follows a Shut off electrical power to unit b Recover refrigerant to relieve all pressure from system using both high pressure and low pressure ports Cut component connection tubing with tubing cutter and remove component from unit Carefully unsweat re
77. 1N0NO23 EQ T iy lt mio m m La 3 pana Lobe ipi ik eme 5 EI 5 Guo ot A Lol 9 E m Fy PEPEZII 8 888 3 5 2 52 0 2 11 amp 252255 5 225 2 2 E 2 P9 A Sas See m 89866668 88688 828889286688 m 9 sr PD 5 02 31382510 5 901vNV 02 0 AUD 1 N023 08 081 01 5435 HINJ JUIM 6 NOI123S 1V3H NI 031 201 SI v81 V 3UIM JONVYO PGL Ol 3UIM 13101A P81 3818 YILVIH 13101A NOILdO 1V3H 21812313 3OVIS 319815 803 NHOGLNHS 310N3H A2NVdn220 AVIFY 5507 3SVHd 580123130 SHOWS 9NIOOV N3HM 102 38V 08 08 1VNIWU3 NO 834 31VN21S30 38058372 7520 81 1112412 AJITdMIS OL QuvOg TWNLOV HOLVW LON S300 1004V1 OIIVW3H2S GYVOE L S310N NMOHS YOSSIYdWOD 2 IN3W3ONVUNY LNINOdWOD g pego mm 181 10 a 14 2 amp E93 0 LO D CO C 48085322 HI TWNINUAL Es id as 200 mw m 401
78. 2 stg cooling compressor w NOVATION coil Cooling Tons 08 7 5 Ton 12 10 14 12 5 Sensor Options None RA smoke detector SA smoke detector D RA amp SA smoke detector E CO sensor RA smoke detector amp CO5 G SA smoke detector amp CO2 RA amp SA smoke detector CO2 Indoor Fan Options 1 Standard static option 2 Medium static option 3 High static option 0 Standard 1 Brand Packaging Electrical Options None C Non fused disc D Thru the base F Non fused amp thru the base Service Options 0 None 1 Unpowered convenience outlet 2 Powered convenience outlet Intake Exhaust Options None 2 position damper B Temp econo w baro relief F Enthalpy econo w baro relief Base Unit Controls 0 Electromechanical 1 PremierLink controller 2 Open protocol controller Design Rev Factory assigned Voltage 1 575 3 60 5 208 230 3 60 6 460 3 60 G AI AI Al Cu T AI AI Al Cu Louvered Hail Guards 2 Stage Cooling Coil Options Outdoor Indoor Serial Number Format 76 POSITION NUMBER 1 4 5 6 7 8 10 TYPICAL 0 9 G 1 2 3 5 POSITION DESIGNATES 1 2 Week of manufacture fiscal calendar 3 4 Year of manufacture 09 2009 5 Manufacturing location
79. 3 105015 usi H 205 m NT183IN3Ud Nue 390 2 m a sv E MD e e HUD QD RI 18 7 OLIVNGHOS 8304 27 50TC Table 6 Thermistor Resistance vs Temperature Values for Space Temperature Sensor Supply Air Temperature Sensor and Outdoor Air Temperature Sensor TEMP TEMP RESISTANCE C F Ohms 40 40 335 651 35 31 242 195 30 22 176 683 25 13 130 243 20 4 96 974 15 5 72 895 10 14 55 298 5 23 42 315 0 32 32 651 5 41 25 395 10 50 19 903 15 59 15 714 20 68 12 494 25 77 10 000 30 86 8 056 35 95 6 530 40 104 5 325 45 113 4 367 50 122 3 601 55 131 2 985 60 140 2 487 65 149 2 082 70 158 1 752 NOTE The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating devices Be sure the probe tip does not come in contact with any of the unit s heater surfaces Outdoor Air Temperature OAT Sensor The OAT is factory mounted in the EconoMi er 2 or accessory It is a nominal 10k ohm thermistor attached to an eyelet mounting ring See Table 6 for temperature resistance characteristic EconoMi er 2 The PremierLink control is used with EconoMi er 2 option or accessory for outdoor air management The damper position is controlled directly by the PremierLink control
80. 4VDC 8 Discrete 2 9 IAQ SEN Analog 4 20mA 10 W2 Discrete 24VAC 11 IAQ COM OAQ COM RH COM Analog 4 20mA 12 RED Digital 5 DC 13 SEN RH SEN Analog 4 20mA 14 Gnd WHT Digital 5 DC 15 AUX OUT Power Exhaust Output Discrete 24VAC 16 BLK Digital 5 DC LEGEND CCN Carrier Comfort Network communication bus RH Relative Humidity G Thermostat Fan wi Thermostat Heat Stage 1 IAQ Indoor Air Quality W2 Thermostat Heat Stage 2 Outdoor Air Quality Y1 Thermostat Cool Stage 1 RAT Return Air Temperature Y2 Thermostat Cool Stage 2 Connect T 56 See Fig 40 for T 56 internal connections Install a jumper between SEN and SET terminals as illustrated Connect T 56 terminals to TB1 terminals 1 3 and 5 See Fig 41 CCN COM SENSOR WIRING JUMPER TERMINALS AS SHOWN C08202 Fig 40 T 56 Internal Connections TB1 PL 8 TB1 PL 88 85 4 Jumper 9 C08213 Fig 41 PremierLink T56 Sensor Connect Thermostat A 7 wire thermostat connection requires a 24 v power source and a common connection Use the R and C terminals on the LCTB s THERMOSTAT
81. 6 3 42 1063 3 66 1168 4 39 5000 1056 3 82 1093 4 08 1128 4 34 1162 4 59 NOTE For more information see General Fan Performance Notes Boldface indicates field supplied drive is required 1 Recommend using field supplied fan pulley part no KR11AD912 and belt part no KR29AF051 80 FAN PERFORMANCE cont 50TC D14 3 PHASE 12 5 TON HORIZONTAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE IN WG CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard Static Option 3438 580 0 82 642 0 99 700 1 16 756 1 34 809 1 53 3750 621 1 03 679 1 21 734 1 40 786 1 59 837 1 79 4063 663 1 28 717 1 47 769 1 67 818 4375 706 1 56 757 1 77 805 1 98 897 2 43 4688 749 1 89 797 2 11 843 2 34 887 2 57 930 2 81 5000 793 2 26 2 50 923 2 98 965 3 23 5313 837 2 69 921 3 19 5625 882 3 16 999 1037 4 23 5938 964 3 96 1001 4 23 1038 4 52 6250 971 4 26 1007 4 55 AVAILABLE EXTERNAL STATIC PRESSURE WG CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option 3438 860 1 72 910 1 92 957 2 12 1003 2 32 1048 2 54 3750 885 1 99 932 2 20 978 2 42 1022 2 64 1065 2 86 4063 912 2 31 957 2 53 1001 2 75 1043 2 98 1084 3 22 4375 941 2 66 984 2 89 1026 3 13 1066 3 37 4688 972 3 05 1053 3 54 5000 1119 4 27 1156 4 55 5313 1038 3 97 1076 4 24 1113 4 52 5625 1073 4 51
82. 86 720 720 80 80 76 76 390 390 170160 384 985 68 2 68 2 80 80 72 72 386 386 72 0 72 0 80 80 76 76 390 390 24 0 32 0 66 7 77 0 102 1 115 0 110 125 94 106 386 386 106 9 119 8 110 125 98 110 390 390 31 8 42 4 88 4 102 0 129 3 146 3 150 150 119 135 386 386 134 0 151 0 150 175 123 139 390 390 37 6 50 0 104 2 120 3 149 0 139 1 150 175 137 156 386 386 153 8 143 8 175 175 141 160 390 390 E 29 5 40 81 181 31 3 40 33 183 13 9 16 7 29 5 40 31 181 31 3 40 33 183 16 5 19 8 29 5 40 31 181 31 3 40 33 183 33 0 39 7 53 9 60 50 181 56 1 60 52 183 41 7 50 2 67 0 70 62 181 69 3 70 64 183 a 50 0 60 1 64 4 70 73 181 66 6 70 75 183 e 30 5 40 32 190 323 40 34 192 13 9 16 7 30 5 40 2 190 32 3 40 34 192 x WEB 16 5 19 8 30 5 40 32 190 32 5 40 34 192 33 0 39 7 55 1 60 51 190 57 4 60 53 192 41 7 50 2 68 3 70 63 190 70 5 80 65 192 50 0 60 1 65 6 80 74 190 67 9 80 76 192 33 5 40 35 194 35 3 45 37 196 13 9 16 7 33 5 40 35 194 35 3 45 37 196 19 8 34 0 40 35 194 36 3 45 37 196 33 0 39 7 58 9 60 54 194 61 1 70 56 196 41 7 50 2 72 0 80 66 194 74 8 80 68 196 50 0 60 1 69 4 80 78 194 71 6 80 80 196 22 3 30 23 142 26 1 30 28 146 17 0 20 4 29 0 30 27 142 33 8 35 31 146 SID 34 0 40 9 54 6 60 50 142 59 4 60 55 146 51 0 61 3 64 8 70 74 142 69 6 80 78 146 22 3 30 23 142 26 1 30 28 146 17 0 20 4 29 0 30 27 142 33 8 35 31 146 Vi 34 0 40 9 54 6 60 50 142
83. 86 248 517 597 711 811 80 90 65 75 191 191 759 859 80 90 70 79 195 195 24 0 32 0 667 770 8991028 90 110 83 95 191 191 94 6 107 5 100 110 87 99 195 195 31 8 42 4 88 4 102 0 117 0 134 0 125 150 108 123 191 191 121 8 138 8 125 150 112 128 195 195 418 60 41 228 45 60 45 232 T 78 104 217 250 418418 60 60 41 41 228 228 456456 60 60 45 45 232 232 i 12 0 16 0 33 4 38 8 511 575 60 60 47 53 228 228 55 9 62 3 60 70 51 57 232 232 8 MED 185248 517 597 740 840 8090 68 77 228 228 78 8 88 8 8090 72 82 232 232 5 24 0 32 0 667 770 92 8 105 6 100 110 85 97 228 228 97 5 110 4 100 125 90 102 232 232 S 31 8 42 4 88 4 102 0 119 9 136 9 125 150 110 126 228 228 124 6 141 6 125 150 115 130 232 232 49 3 60 49 254 53 1 60 54 258 78104 21 7 25 0 493500 60 60 49 49 254 254 53 1 54 8 60 60 54 54 258 258 120160 334385 60 5 66 9 70 70 56 62 254 264 653716 7080 60 66 258 258 186 248 51 7 59 7 83 4 93 4 90 100 77 86 254 254 881 981 90 100 81 90 258 258 24 0 32 0 667 770 102 1 115 0 110 125 94 106 254 254 106 9 119 8 110 125 98 110 258 258 31 8 42 4 88 4 102 0 129 3 146 3 150 150 119 135 254 254 134 0 151 0 150 175 123 139 258 258 19 5 30 19 113 21 3 30 21 115 13 9 16 7 24 1 30 22 113 26 4 30 24 115 16 5 19 8 28 0 30 26 113 30 3 35 28 115 8
84. ALIOINDH H B 3ALLv13u 129 AREA i 01 N023 08 NYJL O1 85835 ISJ JYIM 3WHVW S NOI123S 1 3 NI 031V201 v81 v 9 791 OL 3UIM NMOQINHS 310838 ONY 2 40220 iV13H 5501 35 4 580123130 13101 81 3UIM YILVIH 1310IA JAOW NOILdO 1V3H 21812313 39VIS 319NIS 034 2 JONS 9 00 N3HM 102 08 08 IYNIWYIL NO Su3dWnf 031 91530 3840583 532 81 1112412 43114815 01 Quvog 8 2 HOIVW LON 5300 1004V1 QIIVW3HOS 08 08 153100 NMOHS 505539909 2 IN3WN39NVHUY IN3NOdNOD 8055322 1 QuvOg rm 200 ms aor T E wa 1079 2079 i 2 mu I 2106 36 Table 12 RTU MP Controller Inputs and Outputs BACnet OBJECT CONNECTION PIN POINT NAME NAME TYPE OF I O NUMBERS INPUTS Space Temperature Sensor sptsens Al 10K Thermistor 420 1 2 Supply Air Temperature sat Al 10K Thermistor 42 1 2 Local Outside Air Temperature Sensor oatsens Al 10K Thermistor J2 3 4 Space Temperature Offset Pot sptopot Al 100K Potentiometer J20 3 Indoor Air Quality iaq Al 4 20
85. AZARD Failure to follow this caution may result in personnel and authority concern This test places the duct detector into the alarm state Unless part of the test disconnect all auxiliary equipment from the controller before performing the test If the duct detector is connected to a fire alarm system notify the authorities before performing the test proper 19 50TC SD TRK4 Remote Alarm Test Procedure Dirty Sensor Test Using an SD TRK4 1 Turn the key switch to the RESET TEST position for 1 Turn the key switch to the RESET TEST position for seven seconds two seconds 2 Verify that the test reset station s Alarm LED turns 2 Verify that the test reset station s Trouble LED on flashes 3 Reset the sensor by turning the key switch to the Detector Cleaning position for Ewa seconds Cleaning the Smoke Detector 4 Verify that the test reset station s Alarm LED turns off Clean the duct smoke sensor when the Dirty LED is flashing continuously or sooner if conditions warrant Remote Test Reset Station Dirty Sensor Test The test reset station dirty sensor test checks the test reset A C AUTION station s ability to initiate a sensor dirty test and indicate the results It must be wired to the controller as shown in OPERATIONAL TEST HAZARD Fig 26 and configured to operate the controller s supervision relay For more information see Changing the Dirty Sensor Test Failure to follow
86. CV demand is received When the room temperature calls for heat W1 closes the heating controls are energized as described in Heating Unit Without Economizer above Demand Controlled Ventilation If a field installed CO2 sensor is connected to the Economize IV control a Demand Controlled Ventilation strategy will operate automatically As the CO2 level in the space increases above the setpoint on the EconoMi er IV controller the minimum position of the dampers will be increased proportionally until the Maximum Ventilation setting is reached As the space CO2 level decreases because of the increase in fresh air the outdoor damper will follow the higher demand condition from the DCV mode or from the free cooling mode DCV operation is available in Occupied and Unoccupied periods with IV However a control modification will be required on the 50TC unit to implement the Unoccupied period function PremierLink Control Thermostat Mode If the PremierLink controller is configured for Thermostat mode TSTAT it will control only to the thermostat inputs on J4 These inputs can be overridden through CCN communication via the CV TSTAT points display table When in this mode the fire safety shutdown FSD input cannot be used so any fire life safety shutdown must be physically wired to disable the 24 vac control circuit to the unit Indoor Fan The indoor fan output will be energized whenever there is 24 vac
87. Compressor Protection Overcurrent Each compressor has internal linebreak motor protection Reset is automatic after compressor motor has cooled Overtemperature Each compressor has an internal protector to protect it against excessively high discharge gas temperatures Reset is automatic High Pressure Switch Each system is provided with a high pressure switch mounted the discharge line The switch is stem mounted and brazed into the discharge tube Trip setting is 630 psig 10 psig 4344 69 kPa when hot Reset is automatic at 505 psig 3482 kPa Low Pressure Switch Each system is protected against a loss of charge and low evaporator coil loading condition by a low pressure switch located on the suction line near the compressor The switch is stem mounted Trip setting is 54 psig 5 psig 372 34 kPa Reset is automatic at 117 5 psig 807 34 kPa Supply Indoor Fan Motor Protection Disconnect and lockout power when servicing fan motor The supply fan motor is equipped with an overcurrent protection device The type of device depends on the motor size See Table 4 Table 4 Supply Fan Motor Protection Devices Motor Size bhp Overload Device Reset 1 7 Internal linebreak Automatic 2 4 Internal linebreak Automatic 2 9 Thermik Automatic 3 7 Thermik Automatic 5 2 External circuit Manual breaker The Internal Linebreak type is an imbedded switch that se
88. Copyright 2009 Carrier Corp 7310 W Morris St Indianapolis IN 46231 50TC D08 D14 Nominal 7 5 to 12 5 Tons With Puron R 410A Refrigerant Turn to the Experts Service and Maintenance Instructions TABLE OF CONTENTS SAFETY CONSIDERATIONS 1 UNIT ARRANGEMENT AND ACCESS 2 SUPPLY FAN BLOWER SECTION 3 COOLING oreet retten ce ot doe e 5 PURON R 410A REFRIGERANT 7 COOLING CHARGING CHARTS 9 CONVENIENCE OUTLETS 14 SMOKE DETECTORS 15 PROTECTIVE DEVICES 22 ELECTRIC HEATERS 23 CONDENSER COIL SERVICE 24 PREMIERLINK CONTROL 25 RTU MP CONTROL SYSTEM 34 ECONOMIZER SYSTEMS 47 WIRING DIAGRAMS 56 PRE START UP es 59 START UP 59 START UP PREMIERLINK CONTROLS 60 START UP RTU MP CONTROL 61 OPERATION SEQUENCE 64 FASTENER TORQUE VALUES 75 APPENDIX I MODEL NUMBER SIGNIFICANCE 76 APPENDIX II PHYSICAL DATA 77 APPENDIX III FAN PERFORMANCE 78 APPENDIX IV ELECTRICAL DATA 83 APPENDIX V WIRING DIAGRAM LIST 87 APPENDIX VI MOTORMASTER SENSOR LOCATION
89. ERIV pOW For enthalpy control accessory enthalpy sensor part dn c number 57 078 is required Replace the standard 2 GROMMET outdoor dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location See Fig 76 When the outdoor air enthalpy rises above the outdoor enthalpy changeover setpoint the outdoor air damper moves to its minimum position The outdoor p SENSOR enthalpy changeover setpoint is set with the outdoor enthalpy setpoint potentiometer on the EconoMi er IV 74 RETURN DUCT controller The setpoints are A B C and D See Fig 76 FIELD PROVIDED The factory installed 620 ohm jumper must be in place C07085 across terminals Sp and SR on the EconoMi er IV Fig 75 Return Air Temperature or Enthalpy Sensor controller Mounting Location 95 100 105 110 35 38 41 43 CONTROL CONTROL POINT CURVE APPROX deg F deg C AT 50 RH 0 95 100 105 110 13 16 18 21 24 27 29 32 35 38 41 43 RY BULB TEMPERATURE degrees F degrees C06037 Fig 76 Enthalpy Changeover Setpoints 51 50TC gs 2 E 43 T HOTZ 2 23 N lt ov lt N lt E I 8 Is
90. M XH TRI ECONOMIZER ACCESSORY E e MOTOR REMOTE MIN BRN POSITION 7 EIS 8RN 25 we H 135 Ohm 3 28 RED M 1 alll 2 BLK n MIN E 90 WHT 4 ny V10 9 vx gt el PL6 R F IOP ACCESSORY PN OPEN TAO SENSOR ocv RED BRN me 1 2 max BRN TAQ NC i 2 6 EE 23 A i 0 oey GRA NOT Ustp 11 RED OAT TEMP 5 GRA lt EXTRAER SENSO 50 9 wor 19 BLK ORN sols 2v 30V 1 5 RED tA YEL 5 5 58 FREE E COOL 7 ACCESSORY SR Bun 2 RAT ENTHALPY SENSOR 8 6200 o A BLK 3 E D 4 BRN ja ECONOMIZER NOTES RED s 0 1 WATT 5x RESISTER SHOULD BE REMOVED ONLY WHEN 5 USING DIFFERENTIAL ENTHALPY OR DRY BULB GRA IF SEPERATE FIELD SUPPLIED 24V TRANSFORMER IS USED FOR THE TAN IAQ SENSOR POWER 1124 PLY IT CANNOT HAVE THE SECONDARY OF THE 9 TRANSE ORMER GROUN ORN 3 FOR FIELD RS TAL LED REMOTE MINIMUM POSITION POT REMOVE BLACK WIRE JUMPER BETWEEN P AND P1 AND SET TO PWR EXHAUST 12 CONTROL MINIMUM POSITION POT THE MINIMUM POSITION ACCESSORY NOT USED lt C06028 Fig 68 EconoMi er IV Wiring BLACK TRANSFORMER GROUND BLUE 500 OHM gt RESISTOR U VIOLET 9 PINK RUN OAT SENSOR RED 24 VAC 8 gt 4 20 mA DIRECT DRIVE 4 20mA SIGNAL WHITE _____ J9 ON ACTUATOR PremierLink BOARD 1 Switch on actua
91. MER C08393 29609 09 0 7 80Z 804 1023000 SuM VUN jeordAT 2105 18 314 6j ee Locm1gv 1805532974013 ININ 7001802 3NOMS xem 72 038 rj OLLVM3HOS YIMOd NOUS 40553 4 02 61671097 062 802 TOULNOD OVd D Nani 38 m 180553227 18013 2 011235 1V3H NI 031V201 val r JONVYO PGL OL LITOIA pGL WON4 JUIM 13101A 801140 1V3H 21812313 39 15 319NIS 80426 5 310438 ONY 2 40220 AV13N 5501 3SVHd 580123130 3WONS 9 100 N3HM 102 JYV QuvOB TVNIWH3I NO 58 031 891530 380583 72 Quvo8 LON 5300 1 0 1 211 3 25 QuvOS lVNIWH3I l 32V81 1102812 43114415 OL 29310 1N3N39NYUUY LN3NOdWOD am mo mz
92. NNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS CHECK REFRIGERANT PIPING FOR INDICATIONS OF LEAKS INVESTIGATE AND REPAIR IF NECESSARY CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS CHECK THAT RETURN INDOOR AIR FILTERS ARE CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS III START UP PSIG VERIFY THAT 3 PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION CHECK TO ENSURE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERANT LINES L3 L1 L3 L3 L3 VERIFY THAT 3 PHASE SCROLL COMPRESSORS ARE ROTATING IN THE CORRECT DIRECTION VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS GENERAL SET ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS Catalog No 50TC 3SM Replaces 50TC 28M
93. NO C O OR UNPWRD C O cont x ELECTRIC HEATER NO C O or UNPWRD C O LI E IFM NO PE w PE pwrd fr unit 5 gt Nom FLA DISC SIZE DISC SIZE z kW MCA MOCP MCA MOCP FLA LRA FLA LRA z 60 7 80 63 360 64 5 80 68 364 7 8 10 4 217 250 60 7 60 7 80 80 63 63 360 360 64 5 64 5 80 80 68 68 364 364 20 160 334385 60 7 60 7 80 80 63 63 360 360 64 5 64 5 80 80 68 68 364 364 24 0 32 0 667 770 92 8 105 6 100 110 85 97 360 360 97 5 110 4 100 125 90 102 364 364 31 8 42 4 88 4 102 0 119 9 136 9 125 150 110 126 360 360 124 6 141 6 125 150 115 130 364 364 37 6 50 0 104 2 120 3 139 6 129 7 150 150 128 147 360 360 144 4 134 4 150 150 133 151 364 364 63 2 80 66 377 67 0 80 7i 381 7 8 10 4 21 7 25 0 63 2 63 2 80 80 66 66 377 377 67 0 67 0 80 80 71 71 381 381 2 20 160 384 885 63 2 63 2 80 80 66 66 377 377 67 0 67 0 80 80 71 71 381 381 5 24 0 32 0 667 770 95 9 108 8 100 110 88 100 377 377 100 6 113 5 110 125 93 104 381 381 F3 31 8 42 4 88 4 102 0 123 0 140 0 125 150 113 129 377 377 127 8 144 8 150 150 118 133 381 381 c 37 6 50 0 104 2 120 3 142 8 132 8 150 150 131 150 377 377 147 5 137 6 150 150 136 154 381 381 68 2 80 72 386 72 0 80 76 390 7 8 10 4 217 250 68 2 68 2 80 80 72 72 386 3
94. OR tec eic eei WIRING BLU SPT 1 SET SEN 1 1 OJO NOTE Must use a separate isolated transformer 07132 Fig 59 Space Temperature Sensor Typical Wiring 33ZCT59SPT 38 Economizer Controls Outdoor Air Enthalpy Control HH57AC077 The enthalpy control 57 77 is available as a field installed accessory to be used with the EconoMi er2 damper system The outdoor air enthalpy sensor is part of the enthalpy control The separate field installed accessory return air enthalpy sensor 57 078 is required for differential enthalpy control See below Locate the enthalpy control in the economizer hood Locate two GRA leads in the factory harness and connect these leads to enthalpy control sensors 2 and 3 See Fig 42 Connect the enthalpy control power input terminals to economizer actuator power leads RED connect to TR and BLK connect to The outdoor enthalpy changeover setpoint is set at the enthalpy controller The enthalpy control receives the outdoor air enthalpy from the outdoor air enthalpy sensor and provides a dry contact switch input to the RTU MP controller A closed contact indicates that outside air is preferred to the return air An open contact indicates that the economizer should remain at minimum position Differential Enthalpy Control Differential enthalpy control is provided by sensing and comparing the outside air and re
95. R IS SUITABLE FOR FREE COOLING ENTHALPY CHANGEOVER SET POINT C06034 Fig 72 EconoMi er IV Controller Potentiometer and LED Locations 19 N ED ON D 17 16 LED LED ON C 15 E14 LED OFF 9 13 12 LED OFF LED ON 11 10 LED OFF 9 40 45 50 55 60 65 70 75 80 85 90 95 100 DEGREES FAHRENHEIT 06035 Fig 73 Outside Air Temperature Changeover Setpoints E 9 30 2 25 20 i E d vm I 7 7 10 o 2 5 o 0 0 13 0 20 0 22 0 25 0 30 0 35 0 40 0 45 0 50 STATIC PRESSURE in wg C06031 Fig 74 Outdoor Air Damper Leakage Differential Dry Bulb Control For differential dry bulb control the standard outdoor dry bulb sensor is used in conjunction with an additional accessory dry bulb Sensor part number CRTEMPSNO002AO00 The accessory sensor must be mounted in the return airstream See Fig 75 Wiring is provided in the EconoMi er IV wiring harness 50 ECONOMISERIV In this mode of operation the outdoor air temperature is temperature airstream is used for cooling When using this mode of changeover control turn the enthalpy setpoint potentiometer fully clockwise to the D setting See Fig 72 Outdoor Enthalpy Changeover CONTROLLER compared to the return air temperature and the lower ECONOMIS
96. S RR ER 88 START UP CHECKLIST 90 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Printed in U S A SAFETY CONSIDERATIONS Installation and servicing of air conditioning equipment can be hazardous due to system pressure and electrical components Only trained and qualified service personnel should install repair service air conditioning equipment Untrained personnel can perform the basic maintenance functions of replacing filters Trained service personnel should perform all other operations When working on air conditioning equipment observe precautions in the literature tags and labels attached to the unit and other safety precautions that may apply Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for unbrazing operations Have fire extinguishers available for all brazing operations Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions attached to the unit Consult local building codes and National Electrical Code NEC for special requirements Recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instructions or manuals be alert to the potential for perso
97. TU MP can be set to communicate on four different protocols BACnet Modbus N2 and LonWorks Switch 3 SW3 on the board is used to set protocol and baud rate Switches 1 and 2 SW1 and SW2 are used to set the board s network address See Fig 63 for the switch setting per protocol The 3rd party connection to the RTU MP is through plug J19 Refer to the RTU MP 3rd Party Integration Guide for more detailed information on protocols 3rd party wiring and networking NOTE Power must be cycled after changing the SW1 3 switch settings BACnet MS TP BACnet Master Slave Token Passing MS TP is used for communicating BACnet over a sub network of BACnet only controllers This is the default Carrier communications protocol Each RTU MP module acts as an MS TP Master The speed of an MS TP network can range from 9600 to 76 8K baud Physical Addresses can be set from 01 to 99 40 SW3 Protocol Selection PROTOCOL DS8 DS7 DS6 DS5 054 053 052 051 BACnet MS TP Master Unused OFF OFF OFF ON OFF Select Baud Select Baud Modbus Unused OFF OFF ON ON OFF Select Baud Select Baud Slave N2 Slave Unused OFF OFF OFF ON ON OFF OFF LonWorks Unused ON ON OFF ON OFF OFF OFF NOTE Comm Set to DS Dip Switch Option Sa to MS TP SW3 example shown LIT IT Baud Rate Selections BAUD RATE DS2 DS1 9600 OFF OFF 19 200 ON OFF 38 400 OFF ON 76
98. Temperature control is accomplished by controlling the SAT to a certain level determined by the Economizer PID Loop by calculating a submaster reference ECONSR value This algorithm will calculate the submaster reference temperature ECONSR based on OAT and enthalpy conditions and cooling requirements The ECONSR value is then passed to the Economizer Submaster Loop which will modulate dampers to maintain SAT at ECONSR level The following conditions are required to determine if economizer cooling is possible Indoor fan has been on for at least 30 seconds Enthalpy is low SAT reading is available OAT reading is available SPT reading is available lt SPT OAT OATMAX OATMAX default is 75 F Economizer position is NOT forced If any of the above conditions are not met the ECONSR will be set to its MAX limit of 120 F and the damper will go to its configured minimum position The minimum damper position can be overridden by the IAQ routine described later in this section The calculation for ECONSR is as follows ECONSR PID function on setpoint SPT where Setpoint OCSP STO OHSP STO 2 when NTLO Unoccupied Free Cool OAT Lockout lt OAT lt 68 F Setpoint OCSP STO 1 when OAT lt NTLO Setpoint OHSP STO 1 when OAT 68 F 68 The actual damper position ECONPOS is the result of the following calculation Values represented in the right side of the eq
99. ain the SASP at 70 F Heating For gas or electric heat HS1 and HS2 outputs will follow W1 and W2 inputs respectively The fan will also be turned on if it is configured for electric heat Heating may also be energized when an IAQ sensor installed and has overridden the minimum economizer damper position If the OAT lt 55 F and an IAQ sensor is installed and the IAQ minimum position gt minimum damper position causing the SAT to decrease below the SPT 10 F then the heat stages will be cycled to temper the SAT to maintain a temperature between the SPT and the SPT 10 F Auxiliary Relay Configured for Exhaust Fan If the Auxiliary Relay is configured for exhaust fan AUXOUT 1 in the CONFIG configuration table and Continuous Power Exhaust MODPE is enable in the SERVICE configuration table then the output HS3 will be energized whenever the G input is on If the MODPE is disabled then output will be energized based on the Power Exhaust Setpoint PES in the SETPOINT table Indoor Air Quality If the optional indoor air quality LAOI sensor is installed the PremierLink controller will maintain indoor air quality within the space at the user configured differential setpoint LAOD in the CONFIG configuration table The setpoint is the difference between the IAOI and an optional outdoor air quality sensor If the is not present then a fixed value of 400 ppm is used The actual space setpoint IAOS is
100. al 72 The Daily schedule is the lowest schedule in the hierarchy and is overridden by both the Holiday and Override schedule It consists of a start time a stop time both in 24 hour mode and the seven days of the week starting with Monday and ending in Sunday To select a daily schedule scroll to the Schedules menu off of the Menu selection Enter the User password and change the Occupancy Source to Local Schedule Scroll down and over to the Daily menu and press enter Choose one of the four Daily schedules by pressing the Next softkey and change the Use point from NO to YES by selecting the point and pressing the INCR or DECR softkey Press the OK softkey and scroll to the start and stop times Edit these times following the same steps as the Use point Finally scroll down to the Days section and highlight the days required for the Daily schedule by INCR or DECR softkeys and press OK softkey The Holiday schedule is created to override the Daily schedule and identify a specific day and month of the year to start and stop the unit and change control to the unoccupied heating and cooling setpoints Follow the same steps to turn on one of the twelve Holiday schedules and start and stop times Next select one out of the twelve months and one out of the thirty one days of that month The RTU MP will now ignore the Daily schedule for the specific day and time you selected and follow the Holiday Schedule for this period The Override sc
101. an the cooling low supply air setpoint After a compressor is staged off it may be started again after a normal time guard period and the supply air temperature has increased above the low supply air setpoint Economizer The Economizer dampers are used to provide free cooling and Indoor Air Quality if optional sensor is installed when the outside conditions are suitable The following conditions must be true for economizer operation ndoor Fan has been on for at least 30 seconds Enthalpy is Low if the Enthalpy input is enabled SAT reading is available OAT reading is available SPT reading is available OAT High OAT economizer lockout configuration default 75 OAT lt SPT If any of the mentioned conditions are not true the economizer will be set to its configured minimum position The minimum damper position can be overridden by the routine described later in this section If the above conditions are true the Economizer Control Master Loop will calculate a damper position value based on the following calculation Damper Position minimum position PID SPT econ setpoint Econ setpoint is half way between the effective cool and heat setpoints If the SAT drops below the cooling low supply air setpoint 5 F the economizer will ramp down to minimum position Power Exhaust If RTU MP is also controlling an exhaust fan it can be enabled based on damper position or by
102. are 0 127 and valid addresses for Slave nodes are 0 254 NOTE See RTU MP 3rd Party Integration Guide or alternatively RTU MP Controls Start Up Operation and Instructions Appendix for Protocol Maps Troubleshooting Table 17 Modbus Exception Codes that May be Returned From This Controller CODE MEANING The Modbus function code used 01 Illegal Function in the query is not supported by the controller The register address used in the Illegal Data Address query is not supported by the controller The Modbus Master has attempted to write to a 04 Slave Device Failure non existent register or a read only register in the controller Form 48 50 1 46 Modbus 1 Verify that the BAS and controller are both set to speak the Modbus RTU protocol The protocol of the controller is set via SW3 switches 3 4 5 and 6 The protocol can also be verified by getting a Modstat of the controller through the BACview Hit the FN key and the key at the same time to pull up a Modstat Scroll to the bottom of the page and there is a section entitled Network Communications The active protocol and baud rate will be shown in this section 2 Verify that the BAS and controller are set for the same baud rate The baud rate of the controller is set via SW3 switches 1 and 2 The baud rate can also be verified via the BACview by obtaining a Modstat 3 Verify tha
103. arefully Use the heat shield Replacing NOVATION Condenser Coil The service replacement coil is preformed and is equipped with transition joints with copper stub tubes When brazing the connection joints to the unit tubing use a wet cloth around the aluminum tube at the transition joint Avoid applying torch flame directly onto the aluminum tubing LCTB CONTL BOARD lt 2 gt Field Connections Elec Htr Vo BRN VIO O On Heater 1 in Position 1 HR2 On Heater 2 in Position 2 if installed C08331 Fig 34 Accessory Electric Heater Control Connections PREMIERLINK CONTROL The PremierLink controller is compatible with Carrier Comfort Network CCN devices See Fig 35 This control is designed to allow users the access and ability to change factory defined settings thus expanding the function of the standard unit control board CCN service access tools include System Pilot TM Touch Pilot TM and Service Tool Standard tier display tools Navigator and Scrolling Marquee are not suitable for use with latest PremierLink controller Version 2 x The PremierLink control is factory mounted in the 50TC unit s main control box to the left of the LCTB Factory wiring is completed through harnesses connected to the LVTB Field connections are made at a 16 pole terminal block TB1 located on the bottom shelf of the unit control box in front o
104. ason or more often if local conditions and usage patterns dictate Condenser fan motor mounting bolts tightness Compressor mounting bolts Condenser fan blade positioning Control box cleanliness and wiring condition Wire terminal tightness 2 Refrigerant charge level Evaporator coil cleaning Evaporator blower motor amperage Heating Power wire connections Fuses ready Manual reset limit switch is closed Economizer or Outside Air Damper nlet filters condition Check damper travel economizer Check gear and dampers for debris and dirt Air Filters and Screens Each unit is equipped with return air filters If the unit has an economizer it will also have an outside air screen If a manual outside air damper is added an inlet air screen will also be present Each of these filters and screens will need to be periodically replaced or cleaned Return Air Filters Return air filters are disposable fiberglass media type Access to the filters is through the small lift out panel located on the rear side of the unit above the evaporator return air access panel See Fig 1 To remove the filters 1 Grasp the bottom flange of the upper panel 2 Lift up and swing the bottom out until the panel disengages and pulls out 3 Reach inside and extract the filters from the filter rack 4 Replace these filters as required with similar replacement filters of same size To re install the ac
105. ature and room sensor with override 33ZCT56CO2 Space temperature and room sensor with override and setpoint Table 8 Space Sensor Mode TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL 1 T55 SEN T56 SEN Analog 10k thermistor 2 RMTOCC Discrete 2AVAC 3 T55 SEN T56 SEN Analog 10k thermistor 4 CMPSAFE Discrete 2 5 T56 SET Analog 10k thermistor 6 FSD Discrete 2AVAC 7 LOOP PWR Analog 24VDC 8 SPS Discrete 2AVAC 9 IAQ SEN Analog 4 20mA 10 FILTER Discrete 2 11 IAQ COM OAQ COM RH COM Analog 4 20mA 12 RED Digital 5 DC 13 SEN RH SEN Analog 4 20mA 14 Gnd WHT Digital 5 DC 15 AUX OUT Power Exhaust Output Discrete 24VAC 16 BLK Digital 5 DC LEGEND T55 Space Temperature Sensor FSD Fire Shutdown T56 Space Temperature Sensor Indoor Air Quality CCN Carrier Comfort Network communication bus OAQ Outdoor Air Quality CO3 CMPSAFE Compressor Safety RH Relative Humidity FILTER Dirty Filter Switch SFS Supply Fan Status 29 50TC Table 9 Thermostat Mode TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL 1 RAT SEN Analog 10k thermistor 2 G Discrete 2 3 RAT SEN Analog 10k thermistor 4 Y1 Discrete 2 5 6 Y2 Discrete 2 7 LOOP PWR Analog 2
106. cess panel 1 Slide the top of the panel up under the unit top panel 2 Slide the bottom into the side channels 3 Push the bottom flange down until it contacts the top of the lower panel or economizer top IMPORTANT DO NOT OPERATE THE UNIT WITHOUT THESE FILTERS Outside Air Hood Outside air hood inlet screens are permanent aluminum mesh type filters Check these for cleanliness Remove the screens when cleaning is required Clean by washing with hot low pressure water and soft detergent and replace all screens before restarting the unit Observe the flow direction arrows on the side of each filter frame Economizer Inlet Air Screen This air screen is retained by spring clips under the top edge of the hood See Fig 3 22 3 8 569 mm DIVIDER OUTSIDE Y CLEANABLE ALUMINUM FILTER BAROMETRIC RELIEF FILTER CAP C06027 Fig 3 Filter Installation To remove the filter open the spring clips Re install the filter by placing the frame in its track then closing the spring clips Manual Outside Air Hood Screen This inlet screen is secured by a retainer angle across the top edge of the hood See Fig 4 p p 9 m pO 07156 Fig 4 Screens Installed on Outdoor Air Hood To remove the screen loosen the screws in the top retainer and slip the retainer up until the filter can be removed Re install by placi
107. control system EconoMi er2 See Fig 66 and Fig 67 for component locations on each type See Fig 68 and Fig 69 for economizer section wiring diagrams Both economizers use direct drive damper actuators ECONOMISER IV CONTROLLER WIRING HARNESS ACTUATOR HIDDEN LOW TEMPERATURE COMPRESSOR LOCKOUT SWITCH OUTSIDE AIR TEMPERATURE SENSOR OPERATING LOCATION C06021 Fig 66 IV Component Locations OUTDOOR AIR HOOD HOOD SHIPPING BRACKET BAROMETRIC RELIEF DAMPER GEAR DRIVEN DAMPER 06022 Fig 67 2 Component Locations 47 50TC POTENTIOMETER DEFAULTS SETTINGS MIDDLE ATUM CLOSED Pos 8 z gt ECONOMIZER FIOP ACCESSORY 1 NOTE 1 NOTE 3 50HJ540573 ACTUATOR O ASSEMBLY NOTES PNK bey SET MIDDLE ENTHALPY C SETTING VIO r BLK RED RED T
108. controller Connect the BLK wire to S spade connector on the return air enthalpy sensor and the SR terminal on the enthalpy controller NOTE The enthalpy control must be set to the D setting for differential enthalpy control to work properly The enthalpy control receives the indoor and return enthalpy from the outdoor and return air enthalpy sensors and provides a dry contact switch input to the PremierLink controller A closed contact indicates that outside air is preferred to the return air An open contact indicates that the economizer should remain at minimum position 31 50TC Indoor Air Quality CO Sensor The indoor air quality sensor accessory monitors space carbon dioxide levels This information is used to monitor levels Several types of sensors are available for wall mounting in the space or in return duct with and without LCD display and in combination with space temperature sensors Sensors use infrared technology to measure the levels of CO present in the space air The CO sensors are all factory set for a range of 0 to 2000 ppm and a linear mA output of 4 to 20 Refer to the instructions supplied with the CO sensor for electrical requirements and terminal locations See Fig 45 for typical sensor wiring schematic 0 10VDC QSIG COM G 4 20mA NC COM RELAY NO 5 H G 24 VAC OR 24 VDC
109. ct T 55 See Fig 38 for typical T 55 internal connections Connect the T 55 SEN terminals to terminals 1 and 3 See Fig 39 VIDIO SN REDO plese CCN COM SENSOR WIRING C08201 Fig 38 T 55 Space Temperature Sensor Wiring TB1 PL C08212 Fig 39 PremierLink T 55 Sensor 28 Table 7 PremierLink Sensor Usage OUTDOOR AIR RETURN AIR OUTDOOR AIR RETURN AIR APPLICATION TEMPERATURE TEMPERATURE SENSOR SENSOR ENTHALPY SENSOR ENTHALPY SENSOR Differential Dry Bulb Temperature with Required PremierLink CRTEMPSNOO1A00 33ZCT55SPT PremierLink requires 4 20 mA Actuator or equivalent Single Enthalpy with PremierLink Included PremierLink requires Not Used 4 20 Actuator Requires 57 077 or equivalent Differential Enthalpy D Requires Requires with PremierLink Included PremierLink requires Not Used 4 20 Actuator or equivalent or equivalent NOTES Sensors Optional 33ZCSENCO2 Room sensor adjustable Aspirator box is required for duct mounting of the sensor 33ZCASPCO2 Aspirator box used for duct mounted room sensor 33ZCT55CO2 Space temper
110. ction per input Factory Default 2 Compressor Safety and N O NOTE Compressor Safety input comes from the CLO board J1 2 is always factory wired to TB1 8 X terminal on the unit If the unit has a CLO board do not configure input 3 for anything but Compressor Safety 62 Input 5 This input is a discrete input and can be configured to be one of five different inputs No Function Fire Shutdown Fan Status Filter Status or Remote Occupancy This input can also be configured to be either Normally Open N O or Normally Closed N C Input 5 is factory wired to pin J1 10 Field accessories get wired to its parallel pin J5 3 Do not connect inputs to both locations one function per input Factory Default Fire Shutdown and N C NOTE Fire Shutdown input comes from TB4 7 J1 10 is always factory wired to TB4 7 Only change input 5s function if absolutely needed Input 8 This input is a discrete input and can be configured to be one of five different inputs No Function Enthalpy Switch Fan Status Filter Status or Remote Occupancy This input can also be configured to be either Normally Open N O or Normally Closed N C Input 8 is factory wired to pin J2 6 Field accessories get wired to its parallel pin J5 1 Do not connect inputs to both locations one function per input Factory Default No Function and N O Input 9 This input is a discrete input and can be configured to be one of five different inputs No Function Hum
111. d 24 vac power source to the sensor and to connect the sensor to the control board terminals To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the sensor See Fig 45 Connect the 4 20 mA terminal to RTU MP 14 2 and connect the SIG COM terminal to RTU MP J4 3 See Fig 60 IAQ Sensor 7 04 3 24 C08462 Fig 60 RTU MP Indoor CO Sensor 33ZCSENCO2 Connections Outdoor Air Quality Sensor 337 2 Plus Weatherproof Enclosure The outdoor air sensor is designed to monitor carbon dioxide CO2 levels in the outside ventilation air and interface with the ventilation damper in an HVAC system The sensor is packaged with an outdoor cover See Fig 47 The outdoor air CO sensor must be located in the economizer outside air hood 39 50TC Wiring the Outdoor Air CO Sensor A dedicated power supply is required for this sensor A two wire cable is required to wire the dedicated power supply for the sensor The two wires should be connected to the power supply and terminals 1 and 2 To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the OAQ sensor See Fig 45 Connect the 4 20 mA terminal to RTU MP J4 5 Connect the SIG COM terminal to RTU MP J4 6 See Fig 61 OAQ Sensor RH Sensor 24 VAC C08463 Fig 61 RTU MP Outdoor CO Sensor 33ZCSENCO2
112. d CRTEMPSNOO2A00 accessories are used on many different base units As such these kits may contain parts that will not be needed for installation T 33ZCSENCO2 is an accessory CO sensor 33ZCASPCO2 is an accessory aspirator box required for duct mounted applications tt CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2 33ZCASPCO2 accessories 3 Use the Up Down button to select the preset number See Table 18 4 Press Enter to lock in the selection 5 Press Mode to exit and resume normal operation The custom settings of the CO sensor can be changed anytime after the sensor is energized Follow the steps below to change the non standard settings 1 Press Clear and Mode buttons Hold at least 5 seconds until the sensor enters the Edit mode 2 Press Mode twice The STDSET Menu will appear 3 Use the Up Down button to toggle to the NONSTD menu and press Enter 4 Use the Up Down button to toggle through each of the nine variables starting with Altitude until the desired setting is reached 5 Press Mode to move through the variables 6 Press Enter to lock in the selection then press Mode to continue to the next variable Dehumidification of Fresh Air with DCV Demand Controlled Ventilation Control If normal rooftop heating and cooling operation is not adequate for the outdoor humidity level an energy recovery unit and or a dehumidification option should be considered EconoMi er IV Prepara
113. d to the duct smoke detector sensor s sensing chamber through a sampling tube that extends into the HVAC duct and is directed back into the ventilation system through a shorter exhaust tube The difference in air pressure between the two tubes pulls the sampled air through the sensing chamber When a sufficient amount of smoke is detected in the sensing chamber the sensor signals an alarm state and the controller automatically takes the appropriate action to shut down fans and blowers change over air handling systems notify the fire alarm control panel etc The sensor uses a process called differential sensing to prevent gradual environmental changes from triggering false alarms A rapid change in environmental conditions such as smoke from a fire causes the sensor to signal an alarm state but dust and debris accumulated over time does not For installations using two sensors the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition Smoke Detector Locations Supply Air The Supply Air smoke detector sensor is located to the left of the unit s indoor supply fan See Fig 20 Access is through the fan access panel There is no sampling tube used at this location The sampling tube inlet extends through the side plate of the fan housing into a high pressure area The controller is located on a bracket to the right of the return filter accessed through the lift off filter panel
114. determines Occupied Unoccupied setting 24 vac Occupied no power Unoccupied Modulation is based on the supply air sensor signal tt Modulation is based on the DCV signal Modulation is based on the greater of DCV and supply air sensor signals between minimum position and either maximum position DCV or fully open supply air signal trt open supply air signal 2 10 VDC ACTUATOR 2 84 Volts Fig 70 EconoMi er IV Functional View Modulation is based on the greater of DCV and supply air sensor signals between closed and either maximum position DCV or fully C06053 IV Table 18 provides a summary of EconoMi er IV Troubleshooting instructions are enclosed A functional view of the EconoMi er is shown Fig 70 Typical settings sensor ranges and jumper positions are also shown An EconoMi er IV simulator program is available from Carrier to help with EconoMi er IV training and troubleshooting IV Standard Sensors Outdoor Air Temperature OAT Sensor The outdoor air temperature sensor 57 074 is 10 to 20 mA device used to measure the outdoor air temperature The outdoor air temperature is used to determine when the EconoMi er IV can be used for free cooling The sensor is factory installed the EconoMi er IV in the outdoor airstream See Fig 71 The operating range of temperature measurement is 40 to 100 F 4 to 38 C See Fi
115. door Fan The indoor fan will be turned on whenever any one of the following conditions is true It isin the occupied mode This will be determined by its own internal occupancy schedule Whenever there is a demand for cooling or heating in the unoccupied mode Whenever the remote occupancy switch is closed during DI On Off schedule type or if occupancy is forced occupied by the BAS during BAS On Off schedule type When transitioning from unoccupied to occupied there will be a configured time delay of 5 to 600 seconds before starting the fan The fan will continue to run as long as compressors heating stages or the dehumidification relays are on when transitioning from occupied to unoccupied with the exception of Shutdown mode If Fire Shutdown safety chain SAT alarm or SPT alarm are active the fan will be shutdown immediately regardless of the occupancy state or demand The RTU MP has an optional Supply Fan Status input to provide proof of airflow If this is enabled the point will look for a contact closure whenever the Supply Fan Relay is on If it is not enabled then it will always be the same state as the Supply Fan Relay The cooling economizer heating dehumidification and power exhaust routines will use this input point for fan status Cooling The compressor outputs are controlled by the Cooling Control PID Loop and Cooling Stages Capacity algorithm They will be used to calculate the desired number of
116. e Shutdown Alarm This alarm occurs immediately when the smoke detector senses smoke The Unit Status will be Shutdown and the System Mode will be Disable All unit operations stop immediately and will not restart until the alarm automatically clears If there is not a smoke detector installed or the smoke detector did not trip check input configurations Space Temp Sensor Failure This alarm occurs if the space sensor wired to the RTU MP is disconnected or shorted for more then 10 seconds When this occurs the Unit Status will be Shutdown and the System Mode will be Run Sensor sensor connections wiring board connection and configurations should be checked for faults or errors Alarm will reset automatically when cause is fixed SAT Sensor Alarm This alarm occurs immediately when the supply air temperature sensor wired to the RTU MP is disconnected or shorted When this occurs the Unit Status will be Shutdown and the System Mode will be Run Sensor sensor connections wiring board connection and configurations should be checked for faults or errors Alarm will reset automatically when cause is fixed Switch Configuration Alarm This occurs if more than one binary input inputs 3 5 8 and 9 is configured for the same function When this happens the two inputs or more configured wrong will be disabled as an inputs This alarm will automatically be cleared when configuration is corrected An example of this would be Input 3
117. e fan wheel speed to match as installed ductwork systems The pulley consists of a fixed flange side that faces the motor secured to the motor shaft and a movable flange side that can be rotated around the fixed flange side that increases or reduces the pitch diameter of this driver pulley See Fig 6 STRAIGHT EDGE MUST MOVABLE BE PARALLEL FLANGE WITH BELT MOTOR AND FAN SHAFTS MUST BE PARALLEL N Fig 6 Supply Fan Pulley Adjustment PULLEYS SETSCREWS FIXED FLANGE SINGLE GROOVE C07075 As the pitch diameter is changed by adjusting the position of the movable flange the centerline on this pulley shifts laterally along the motor shaft This creates a requirement for a realignment of the pulleys after any adjustment of the movable flange Also reset the belt tension after each realignment Check the condition of the motor pulley for signs of wear Glazing of the belt contact surfaces and erosion on these surfaces are signs of improper belt tension and or belt slippage Pulley replacement may be necessary To change fan speed 1 Shut off unit power supply 2 Loosen belt by loosening fan motor mounting nuts See Fig 5 3 Loosen movable pulley flange setscrew See Fig 6 4 Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed Increasing fan speed increases load on motor Do not exceed maximum speed specified 5 Set movable flange at neares
118. e guard between modes equals zero mode is occupied or the Temperature Compensated Start or Cool mode is active SPT reading is available and gt OCSP STO mode is unoccupied and the SPT gt UCSP Unoccupied Cooling Deadband The indoor fan will be turned on by the staging algorithm OAT DXLOCK or OAT DX Lockout is disabled If all of the above conditions are met the CCSR will be calculated otherwise it is set to its maximum value and DX stages is set to 0 If only the last condition is not true and an economizer is available it will be used to cool the space 67 50TC The submaster loop uses the CCSR compared to the actual SAT to determine the required number of capacity stages to satisfy the load There is a programmable minimum internal time delay of 3 to 5 minutes on and 2 to 5 minutes off for the compressors to prevent short cycling There is also a 3 minute time delay before bringing on the second stage compressor If the PremierLink controller is configured for Heat Pump and AUXOUT is configured for Reversing Valve Cool the H3_EX_RV output will energize 2 seconds after the first compressor is energized and stay energized until there is a demand for heat If AUXOUT is configured for Reversing Valve Heat then the H3 EX RV contact will be de energized when there is a demand for cooling An internal 5 to 10 minute user programmable time guard between modes prevents rapid cycling between modes w
119. e thermostat or the 3V control system If using the Linkage thermostat both the PremierLink controller and the stat must be on the same CCN bus When used as the air source for a 3V control system the PremierLink controller is not required to be on the same CCN bus but it is recommended Linkage will be active when it is initiated from the Linkage thermostat or the 3V Linkage Coordinator through CCN communications and requires configuration Only one device can be linked to the PremierLink controller Once Linkage is active the PremierLink controller s own SPT temperature setpoints and occupancy are ignored and the controller will use the information provided by the remote linkage device The following information will be received from the remote linked device and can be viewed in the maintenance display table Supervisory Element Supervisory Bus Supervisory Block Average Occupied Heat Setpoint Average Occupied Cool Setpoint Average Unoccupied Heat Setpoint Average Unoccupied Cool Setpoint Average Zone Temp Average Occupied Zone Temp Occupancy Status 71 50TC In return the PremierLink controller will provide its SAT and operating mode to the linked device It will convert its operating modes to Linkage modes See Table 21 Table 21 Linkage Modes ROOFTOP MODE VALUE LINKAGE MODE Demand Limit N A N A Heat 3 Heating Cool or Free Coo
120. ee Fig 54 The available network systems are BACnet MP TP Modbus and Johnson J2 Communication with LonWorks is also possible by adding an accessory interface card to the RTU MP Selection of the communication protocol and baud rate are made at on board DIP switches Carrier s diagnostic display tools BACviewer6 Handheld and Virtual BACview loaded on a portable PC must be used with the RTU MP controller Connection to the RTU MP board is at the J12 access port See Fig 54 34 The RTU MP control is factory mounted in the 50TC Refer to Table 12 RTU MP Controller Inputs and Outputs unit s main control box to the left of the LCTB See Fig for locations of all connections to the RTU MP board 55 Factory wiring is completed through harnesses connected to the LCTB Field connections for RTU MP sensors will be made at the Phoenix connectors on the RTU MP board The factory installed RTU MP control includes the supply air temperature SAT sensor The outdoor air temperature OAT sensor is included in the FIOP accessory 2 package 1 J1 25 wp 0 10 RTU MP 2 Board Power _ _ _ 58 5 35 5 5 J3 7 U U P 5 55 5 5 420mMA_ lt 000008 28 Ss 5853 gt LER g om 55955 5 23 5 29900625 gt 9 sme 9o S335 3253925 8 85 S NS9 395 4 5 5 55 o o o E
121. energized the economizer will be modulated to maintain SAT at SASP SATLO1 3 F If the SAT gt SASP 5 F and the economizer position gt 85 then the economizer will close the to minimum position for three minutes or until the SAT gt 68 F The economizer integrator will then be reset and begin modulating to maintain the SASP after stage one has been energized for 90 seconds When Y2 is energized the economizer will be modulated to control to a lower supply air setpoint SASP SATLO2 3 F If the SAT gt SASP 5 F it will close the economizer to minimum position for 3 minutes reset the integrator for the economizer then start modulating the economizer to maintain the SASP after the stage two has been on for 90 seconds This provides protection for the compressor against flooded starts and allow refrigerant flow to stabilize before modulating the economizer again By using return air across the evaporator coil just after the compressor has started allows for increased refrigerant flow rates providing better oil return of any oil washed out during compressor start up Routine No 3 If the OAT gt 68 F and the enthalpy is low and the OAT lt SPT then the economizer will open to 100 and compressors 1 and 2 will be cycled based on Y1 and Y2 inputs respectively If any of these conditions are not met the economizer will go to minimum position If there is no call for heating or cooling the economizer if available will maint
122. ers is strongly discouraged since coil and unit durability could be affected Totaline Environmentally Sound Coil Cleaner Application Equipment 2 1 2 gallon garden sprayer water rinse with low velocity spray nozzle CAUTION PERSONAL INJURY HAZARD Failure to follow this caution may result in corrosion and damage to the unit Harsh chemicals household bleach or acid or basic cleaners should not be used to clean outdoor or indoor coils of any kind These cleaners can be very difficult to rinse out of the coil and can accelerate corrosion at the fin tube interface where dissimilar materials are in contact If there is dirt below the surface of the coil use the Totaline environmentally sound coil cleaner as described above CAUTION PERSONAL INJURY HAZARD Failure to follow this caution may result in reduced unit performance High velocity water from a pressure washer garden hose or compressed air should never be used to clean a coil The force of the water or air jet will bend the fin edges and increase airside pressure drop Totaline Environmentally Sound Coil Cleaner Application Instructions 1 Proper eye protection such as safety glasses is recommended during mixing and application 2 Remove all surface loaded fibers and dirt with a vacuum cleaner as described above 3 Thoroughly wet finned surfaces with clean water and a low velocity garden hose being careful not to bend fins
123. etwork Communications The active protocol and baud rate will be shown in this section 2 Verify that the BAS and controller are set for 9600 baud The baud rate of the controller is set via SW3 switches 1 and 2 The baud rate can also be verified via the BACview by obtaining a Modstat see above 3 Verify that the BAS is configured to speak 2 wire EIA 485 to the controller The BAS may have to configure jumper or DIP switches on their end 4 Verify that the BAS and the controller have the same communication settings 8 data bits No Parity and 1 stop bit 5 Verify that the controller has a unique N2 slave address on the N2 bus The controller s N2 slave address is set by its rotary address switches 6 Verify proper wiring between the BAS and the controller 7 Verify that the BAS is reading or writing to the proper network point addresses on the controller Download the latest points list for the controller to verify 8 Verify that the BAS is sending his requests to the proper slave address of our controller NOTE See RTU MP 3rd Party Integration Guide or alternatively RTU MP Controls Start Up Operation and Troubleshooting Instructions Form 48 50H T 2T Appendix for N2 Protocol Conformance Statement ECONOMIZER SYSTEMS The 50TC units may be equipped with a factory installed or accessory field installed economizer system Two types are available with a logic control system IV and without a
124. eversing Valve Heat the H3 EX RV output will stay energized until there is a cool demand HEAT STAGES 1 50 capacity shall energize CMP1 CMP2 RVS HEAT STAGES 2 100 capacity shall energize HS1 and HS2 Heating PID STAGES 3 and AUXOUT Reversing Valve Heat the H3 EX RV output will stay energized until there is a cool demand HEAT STAGES 1 33 capacity if shall energize CMP1 CMP2 RVS HEAT STAGES 2 66 capacity shall energize HS1 HEAT STAGES 3 100 capacity shall energize HS2 69 50TC If AUXOUT is configured for Reversing Valve Cool then the H3 EX RV contact will be deenergized when there is a demand for heating The heat stages will be cycled to temper the SAT so that it will be between the SPT and the SPT 10 F SPT lt SAT lt SPT 10 F if the number of heat stages calculated is zero the OAT lt 55 F an IAQ sensor is installed the IAQ Minimum Damper Position gt minimum damper position and the SAT lt SPT 10 F There is also a SAT tempering routine that will act as SAT low limit safety to prevent the SAT from becoming too cold should the economizer fail to close One stage of heating will be energized if it is not in the Cooling or Free Cooling mode and the OAT is below 55 F and the SAT is below 40 F It will deenergize when the SAT gt SPT 10 F Indoor Air Quality If the optional indoor air quality IAQI sensor is installed the PremierLink controlle
125. f the PremierLink controller The factory installed PremierLink control includes the supply air temperature SAT sensor The outdoor air temperature OAT sensor is included in the FIOP accessory 2 package Refer to Fig 35 for PremierLink connection locations NOTE Refer to Form Rooftop PremierLink Installation Start Up Configuration Instructions Form 33CS 58SI for complete PremierLink configuration operating sequences and troubleshooting information Have a copy of this manual available at unit start up The PremierLink controller requires the use of a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock This is necessary for broadcast of time of day functions occupied unoccupied NOTE PremierLink controller is shipped in Sensor mode To be used with a thermostat the PremierLink controller must be configured to Thermostat mode Refer to PremierLink Configuration instructions for Operating Mode 25 50TC HVAC SENSOR INPUTS SPACE TEMP SUPPLY AIR TEMP E m B n i i Bus OUTDOOR TEMP PremierLink Bent s 2 INDOOR AIR QUALITY OUTDOOR AIR QUALITY Sw a DUAL MODE SENSOR STAT REMOTE OCCUPANCY G COMP SAFETY Y1 FIRE SHUTDOWN Y2 SUPPLY FAN STATUS W1 NOT USED W2 NT E LE _ a ENTHALPY STATUS 24 E NON CCN LEN NAVIGATOR 4 20MA
126. g 73 49 50TC Supply Air Temperature SAT Sensor The supply air temperature sensor is a 3 K thermistor located at the inlet of the indoor fan See Fig 71 This sensor is factory installed The operating range of temperature measurement is 0 to 158 F 18 to 70 C See Table 6 for sensor temperature resistance values SUPPLY AIR TEMPERATURE SENSOR MOUNTING LOCATION SUPPLY AIR TEMPERATURE gt c 5 17 C06033 Fig 71 Supply Air Sensor Location The temperature sensor looks like an eyelet terminal with wires running to it The sensor is located in the crimp end and is sealed from moisture Outdoor Air Lockout Sensor The EconoMi er IV is equipped with an ambient temperature lockout switch located in the outdoor airstream which is used to lock out the compressors below a 42 F 6 ambient temperature See Fig 66 EconoMi er IV Control Modes IMPORTANT The optional EconoMi er2 does not include a controller The EconoMi er2 is operated by a 4 to 20 mA signal from an existing field supplied controller See Fig 69 for wiring information Determine the EconoMi er IV control mode before set up of the control Some modes of operation may require different sensors See Table 18 The IV is supplied from the factory with a supply air temperature sensor and an outdoor air temperature sensor This allows for operation of the EconoMi er IV with outdoor air d
127. g the test If the duct detector is connected to a fire alarm system notify the authorities before performing the test proper Sensor Alarm Test Procedure 1 Hold the test magnet where indicated on the side of the sensor housing for seven seconds 2 Verify that the sensor s Alarm LED turns on 3 Reset the sensor by holding the test magnet against the sensor housing for two seconds 4 Verify that the sensor s Alarm LED turns off Controller Alarm Test The controller alarm test checks the controller s ability to initiate and indicate an alarm state 18 CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern This test places the duct detector into the alarm state Disconnect all auxiliary equipment from the controller before performing the test If the duct detector is connected to a fire alarm system notify the proper authorities before performing the test Controller Alarm Test Procedure 1 Press the controller s test reset switch for seven seconds 2 Verify that the controller s Alarm LED turns on 3 Reset the sensor by pressing the test reset switch for two seconds 4 Verify that the controller s Alarm LED turns off Dirty Controller Test The dirty controller test checks the controller s ability to initiate a dirty sensor test and indicate its results 4 CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution ma
128. halpy Control Differential Enthalpy Control Differential enthalpy control is provided by sensing and comparing the outside air and return air enthalpy conditions Install the outdoor air enthalpy control as described above Add and install a return air enthalpy sensor Return Air Enthalpy Sensor Mount the return air enthalpy sensor 57 078 in the return air duct The return air sensor is wired to the enthalpy controller 57 077 See Fig 44 ENTHALPY CONTROLLER 5 OUTDOOR AIR ENTHALPY SENSOR LIS RETURN AIR ENTHALPY SENSOR WIRE HARNESS IN UNIT GRAY RED NOTES Remove factory installed jumper across SR and before connecting wires from return air sensor Switches shown in high outdoor air enthalpy state Terminals 2 and 3 close on low outdoor air enthalpy relative to indoor air enthalpy Remove sensor mounted on back of control and locate in outside air stream m 06019 Fig 44 Outside and Return Air Enthalpy Sensor Wiring To wire the return air enthalpy sensor perform the following 1 Use a 2 conductor 18 or 20 AWG twisted pair cable to connect the return air enthalpy sensor to the enthalpy controller 2 At the enthalpy control remove the factory installed resistor from the SR and terminals 3 Connect the field supplied RED wire to spade connector on the return air enthalpy sensor and the 5 terminal on the enthalpy
129. he controller are on and all other LEDs are off Alarm State The smoke detector enters the alarm state when the amount of smoke particulate in the sensor s sensing chamber exceeds the alarm threshold value See Table 3 Upon entering the alarm state The sensor s Alarm LED and the controller s Alarm LED turn on The contacts on the controller s two auxiliary relays switch positions The contacts on the controller s alarm initiation relay close The controller s remote alarm LED output is activated turned on The controller s high impedance multiple fan shutdown control line is pulled to ground Trouble state The SuperDuct duct smoke detector enters the trouble state under the following conditions A sensor s cover is removed and 20 minutes pass before it is properly secured A sensor s environmental compensation limit is reached 100 dirty A wiring fault between a sensor and the controller is detected An internal sensor fault is detected upon entering the trouble state The contacts on the controller s supervisory relay switch positions See Fig 28 f a sensor trouble the sensor s Trouble LED the controller s Trouble LED turn on If 100 dirty the sensor s Dirty LED turns on and the controller s Trouble LED flashes continuously f a wiring fault between a sensor and the controller the controller s Trouble LED turns on but not the sensor s Trouble Power Test reset
130. hedules primary purpose is to provide a temporary change in the occupied heating and cooling setpoints and force the unit to control to the unoccupied heating and cooling setpoints This would occur on a set day in a particular month and last during the start and stop time configured The Override schedule is enabled by following the same steps to create the Holiday schedule NOTE Push button override is only available when running a local or BACnet Schedule BACnet Schedule For use with a Building Automation System that supports native BACnet scheduling is scheduling the unit With the Occupancy Source set to BACnet schedule the BAS will control the unit through network communication and it s own scheduling function BAS On Off The Building Automation System is scheduling the unit via an On Off command to the BAS ON OFF software point The Building Automation System can be speaking BACnet Modbus or N2 and is writing to the BAS On Off point in the open protocol point map NOTE If the BAS supports NATIVE BACnet scheduling then set the Occupancy Source to BACnet schedule If the BAS is BACnet but does NOT support NATIVE BACnet scheduling then set the Occupancy Source to BAS On Off DI On Off A hard wired input on the RTU MP will command the unit to start stop Inputs 3 5 8 and 9 on plug J5 can be hard wired to command the unit to start stop NOTE Scheduling can either be controlled via the unit or the BAS but NOT both In
131. hen used in a single zone application The Time Guard is lowered to 3 minutes when Linkage is active to allow the 3V linkage coordinator to have better control of the PremierLink controller when used as the air source for the 3V control system Table 20 indicates the number of stages available The staging algorithm looks at the number of stages available based the number of cool stages configured in the SERVICE configuration table The algorithm will skip the economizer if it is not available and turn on a compressor Table 20 Available Cooling Stages NUMBER OF 0 1 2 3 STAGES ECONOMIZER Compressor 1 Off Off On On Compressor2 Off Off Off On fconditions are suitable for economizer operation Any time the compressors are running the PremierLink controller will lockout the compressors if the SAT becomes too low These user configurable settings are found in the SERVICE configuration table e Compressor 1 Lockout at SAT lt SATLOI 50 to 65 F default is 55 F Compressor 2 Lockout at SAT SATLO2 45 to 55 F default is 50 F After a compressor is locked out it may be started again after a normal time guard period and the supply air temperature has increased at least 8 F above the lockout setpoint Dehumidification The PremierLink controller will provide occupied and unoccupied dehumidification control when AUXOUT 5 in the CONFIG table and is installed on HVAC units tha
132. hlight B Smoke detector NC contact set will open on smoke alarm condition de energizing the ORN conductor Highlight C 24 v power signal via ORN lead is removed at Smoke Detector input on LCTB all unit operations cease immediately PremierLink Control Unit operating functions fan cooling and heating are terminated as described above In addition Highlight D On smoke alarm condition the smoke detector NO Alarm contact will close supplying 24 v power to GRA conductor 17 50TC FE Z ACCESSORY POWE RETURN _24 VAC SMOKE 45 SENSOR SUPPLY SMOKE _LSENSOR FROM POWER SCHEMATIC RED CONTROL BOARD TRAN SMOKE CONTROL M ODULE FIOP ACCESSOR M IFM OL ALL 3PH IFM YEL RED GRA RED CE EXCEPT 5 25 1 1 T T T T T 1 m Eo OO a Aa gt pg aR T A x 2 l 4 JJ peres 5 A A T M PERS aesggEBBOSSOSgO 111 A om En 1 1 i CL017 1 Se 4 eres lo es ee ee ee eee aM wrt eG dee dad epp DC 3 T STAT __ 14 MIU
133. hould be wired to the and AOI terminals of the controller Adjust the DCV potentiometers to correspond to the DCV voltage output of the indoor air quality sensor at the user determined setpoint See Fig 78 2 SENSOR MAX RANGE SETTING 6000 amp 5000 2 4000 lt Ow 800 ppm 2 3000 900 ppm iL 1000 ppm 2 m 1100 ppm Q 2000 2 2 1000 jam 0 2 3 4 5 6 7 8 DAMPER VOLTAGE FOR MAX VENTILATION RATE C06039 Fig 78 Sensor Maximum Range Settings If a separate field supplied transformer is used to power the IAQ sensor the sensor must not be grounded or the IV control board will be damaged When using demand ventilation the minimum damper position represents the minimum ventilation position for VOC volatile organic compounds ventilation requirements The maximum demand ventilation position is used for fully occupied ventilation When demand ventilation control is not being used the minimum position potentiometer should be used to set the occupied ventilation position The maximum demand ventilation position should be turned fully clockwise Exhaust Setpoint Adjustment The exhaust setpoint will determine when the exhaust fan runs based on damper position if accessory power exhaust is installed The setpoint is modified with the Exhaust Fan Setpoint EXH SET potentiometer See Fig 72 The setpoint
134. idistat Fan Status Filter Status or Remote Occupancy This input can also be configured to be either Normally Open N O or Normally Closed N C Input 9 is factory and field wired to pin J5 7 Do not connect inputs to both locations one function per input Factory Default Humidistat and N O Space Sensor Type This tells the controller what type of space sensor is installed to run the unit The three types that can be used are the T55 space sensor the T56 space sensor or the RS space sensor Factory Default 2 T55 Type Input 1 Function This input is an analog input and can be configured to be one of five different inputs No Sensor IAQ Sensor OAQ Sensor Space RH Sensor or Outdoor RH Sensor Input 1 is wired to pin J4 5 Factory Default 2 No Sensor Input 2 Function This input is an analog input and can be configured to be one of five different inputs No Sensor IAQ Sensor OAQ Sensor Space RH Sensor or Outdoor RH Sensor Input 2 is wired to pin J4 2 Factory Default No Sensor Setpoint Slider Range This sets the slider range of the space sensor with this built in function The slider is used to offset the current control setpoint Factory Default 2 5 A F Range 0 15 155 56 Override Duration This sets the occupancy override duration when the override button is pushed on the space sensor Factory Default 2 1 hr Range 0 24 hr IAQ Low Reference 4mA This is used when an IAQ sensor is installed on Input
135. indoor fan will be turn on by the staging algorithm When all of the above conditions are met the SHSR is calculated and up to 3 stages of heat will turned on and off to satisfy to maintain the SAT SHSR If any of the above conditions are not met the SHSR is set to its minimum value of 35 F The Staged Heat Submaster Reference SHSR is calculated as follows SHSR Heating PID function on error where error OHSP STO Space Temperature The Maximum SHSR is determined by the SATHI configuration If the supply air temperature exceeds the SATHI configuration value then the heat stages will turn off Heat staging will resume after a delay to allow the supply air temperature to drop below the SATHI value The maximum number of stages available is dependent on the type of heat and the number of stages programmed in the CONFIG and SERVICE configuration tables Staging will occur as follows for gas electric units Carrier heat pumps with a defrost board or cooling units with electric heat For Heating PID STAGES 2 HEAT STAGES 1 50 capacity energize 51 HEAT STAGES 2 100 capacity energize HS2 For Heating PID STAGES 3 and AUXOUT HS3 HEAT STAGES 1 33 capacity if energize HS1 HEAT STAGES 2 66 capacity energize HS2 HEAT STAGES 3 100 capacity energize HS3 Staging will occur as follows For heat pump units with AUXOUT configured as reversing valve For Heating PID STAGES 2 and AUXOUT R
136. influence the economizer minimum position The RTU MP has its own hardware clock that is set automatically when the software is installed on the board The RTU MP s default is to control to occupied setpoints all the time until a type of occupancy control is set Occupancy types are described in the scheduling section The following sections describe the operation for the functions of the RTU MP All point objects that are referred to in this sequence will be in reference to the objects as viewed in BACview Handheld Scheduling Scheduling is used to start heating or cooling become occupied based upon a day of week and a time period and control to the occupied heating or cooling setpoints Scheduling functions are located under occupancy determination and the schedule menu accessed by the Menu softkey see Appendix for menu structure Your local time and date should be set for these functions to operate properly Five scheduling functions are available by changing the Occupancy Source to one of the following selections Always Occupied Default Occupancy The unit will run continuously RTU MP ships from the factory with this setting Local Schedule The unit will operate according to the schedule configured and stored in the unit The local schedule is made up of three hierarchy levels that consist of two Override schedules twelve Holiday and four Daily schedules and are only accessible by the BACview screen handheld or virtu
137. inimum position Factory Default 75 F Range 55 80 F 63 50TC Power Exhaust Setpt When the economizer damper position opens above this point the power exhaust operation will begin When the damper position falls 10 below the setpoint the power exhaust will shutdown Factory Default 50 Range 20 90 NOTE This point is only used when Continuous Occ Exhaust NO Continuous Occ Exhaust This point tells the controller when to run the power exhaust if equipped on the unit If set to YES the power exhaust will be on all the time when in occupied mode and will be off when in unoccupied mode If set to NO the power exhaust will be controlled by the Power Exhaust Setpoint Factory Default NO IAQ Max Differential CO Setpt If the difference between indoor an outdoor air quality becomes greater then this value the damper position will stay at the IAQ Greatest Min Dmpr Pos configuration point Factory Default 2 650 PPM Range 300 950 PPM IAQ Greatest Min Dmpr Pos This is the greatest minimum position the economizer will open to while trying to control the indoor air quality CO2 differential Factory Default 50 open Range 10 6046 open Clockset This submenu screen allows you to set the date and time manually The Daylight Savings Time DST can also be changed here The date and time is automatically set when ever software is downloaded The clock is a 24 hour clock and not am pm The time should
138. inimum position when the SAT this configuration 5 F Factory Default 50 F Range 45 75 F Cooling Lockout Temp This defines the minimum outdoor air temperature that cooling mode can be enabled and run If the OAT falls below this threshold during cooling then compressor cooling will not be allowed Factory Default 45 F Range 0 65 F Heating Heating SAT High Setpt The supply air temperature must remain below this value to allow heating There is 5 F plus and minus deadband to this point If the SAT rises above this value during heating the heat stages will begin to decrease until the SAT has dropped below this value Factory Default 120 F Range 95 150 F Heating Lockout Temp This defines the maximum outdoor air temperature that heating mode can be enabled and run If the OAT rises above this threshold during heating then heating will not be allowed Factory Default 65 F Range 49 95 F Inputs NOTE For installation of inputs and field installed accessories refer to the appropriate sections Input 3 This input is a discrete input and can be configured to be one of five different inputs No Function Compressor Safety Fan Status Filter Status or Remote Occupancy This input can also be configured to be either Normally Open N O or Normally Closed N C Input 3 is factory wired to pin J1 2 Field accessories get wired to its parallel pin J5 5 Do not connect inputs to both locations one fun
139. it AL 2000000000 eceeees 9 lt lt lt 55555 Bese J5 HK50AA047 PCB 012311 Rev 3 amp 4 RTU MP AO 2 GND 79 0 10V only p0 6 i Humidistat ACCESS e PORT RNET TL 90 7 Spare i 12 voc ada LSB Rnet DO 8 PE T Exhaust Rnet CR2032 555 EC GND J11 254 5 SW1 SW2 l i le e le gt 2 COMM Shldz OPTION J14 Net LGS b Protocol Selector Remove Input_10 T 55 Accy BACnet both for 0 5V or Net Input_11 T 56 Accy Comm 07129 Fig 54 RTU MP Multi Protocol Control Board 35 6272600 023002 93545 dIA bM SS Su WO S Myou1N02 73 1901 Wil 2ILYIGHOS 83404 HOYI Ho
140. k for possible blockage of one or more of these metering devices disconnect the supply fan contactor IFC coil then start the compressor and observe the frosting pattern on the face of the evaporator coil A frost pattern should develop uniformly across the face of the coil starting at each horizontal header tube Failure to develop frost at an outlet tube can indicate a plugged or a missing orifice Refrigerant System Pressure Access Ports There are two access ports in each system on the suction tube near the compressor and on the discharge tube near the compressor These are brass fittings with black plastic caps The hose connection fittings are standard 1 4 SAE Male Flare couplings The brass fittings are two piece High Flow valves with a receptacle base brazed to the tubing and an integral spring closed check valve core screwed into the base See Fig 9 This check valve is permanently assembled into this core body and cannot be serviced separately Replace the entire core body if necessary Service tools are available from RCD that allow the replacement of the check valve core without having to recover the entire system refrigerant charge Apply compressor refrigerant oil to the check valve core s bottom O ring Install the fitting body with 96 10 in lbs of torque do not overtighten PURON R 410A REFRIGERANT This unit is designed for use with Puron R 410A refrigerant Do not use any other refrigerant in this sys
141. ling 4 Cooling IAQ Control N A N A Temp Compensated Hes 2 cod 5 Cooling IAQ Purge Pressurization Occupied Indoor Fan ON Cooling Unoccupied Free Unoccupied Free Cool 3 Cooling Fire Shutdown 7 Evac Factory Field Test 1 Off Off 1 Off The PremierLink controller will generate a Linkage Communication Failure alarm if a failure occurs for 5 consecutive minutes once a Linkage has previously been established It will then revert back to its own SPT setpoints and occupancy schedule for control For this reason Carrier strongly recommends that an SPT be installed in the space on open plenum systems or in the return air duct of ducted return air systems to provide continued backup operation When Linkage communication is restored the controller will generate a return to normal For more information on how the PremierLink controller is used in conjunction with the Carrier 3V control system contact your CCN controls representative IMPORTANT The PremierLink controller should not be used as a linked air source in a ComfortID VAV system The ComfortID VAV system will NOT function correctly when applied with a PremierLink controller as the air source resulting in poor comfort control and possible equipment malfunction NOTE The PremierLink controller can be used as an air source in a 3V Pressure Independent PI System a 3V Linkage Coordinator with ComfortID Z
142. load or increase unit size Thermostat set too low Reset thermostat Low refrigerant charge Locate leak repair and recharge Leaking valves in compressor Replace compressor Excessive Head Pressure Air in system Recover refrigerant evacuate system and recharge Condenser coil dirty or restricted Clean coil or remove restriction Dirty air filter Replace filter Dirty condenser coil Clean coil Refrigerant overcharged Recover excess refrigerant Air in system Recover refrigerant evacuate system and recharge Condenser air restricted or air short cycling Determine cause and correct Head Pressure Too Low Low refrigerant charge Check for leaks repair and recharge Compressor valves leaking Replace compressor Restriction in liquid tube Remove restriction Excessive Suction Pressure High head load Check for source and eliminate Compressor valves leaking Replace compressor Refrigerant overcharged Recover excess refrigerant Suction Pressure Too Low Dirty air filter Replace filter Low refrigerant charge Check for leaks repair and recharge Metering device or low side restricted Remove source of restriction Insufficient evaporator airflow Increase air quantity Check filter and replace if necessary Temperature too low in conditioned area Reset thermostat
143. m then ECONSR is set to its minimum value 48 F and the damper will go to 100 open If the Auxiliary Relay is configured for exhaust fan AUXOUT 1 in the CONFIG configuration table and Continuous Power Exhaust MODPE is Enable in the SERVICE configuration table then the AUXO output HS3 will be energized whenever the PremierLink controller is in the occupied mode If the MODPE is disabled then AUXO output will be energized based on the Power Exhaust Setpoint PES in the SETPOINT table Heating The heat stages are controlled by the Heating Control Loop which is used to calculate the desired SAT needed to satisfy the space It will compare the SPT to the Occupied Heat Setpoint OHSP the T56 slider offset STO when occupied and the Unoccupied Heat Setpoint UHSP Unoccupied Heating Deadband if unoccupied to calculate a Staged Heat Submaster Reference SHSR The heat staging algorithm compares the SHSR to the actual SAT to calculate the required number of heating stages to satisfy the load This loop runs every 40 seconds The following conditions must be met in order for this algorithm to run Indoor fan has been ON for at least 30 seconds Cool mode is not active and the time guard between modes equals zero Mode is occupied or the Temperature Compensated Start or Heat mode is active SPT reading is available and OHSP STO If it is unoccupied and the SPT UHSP Unoccupied Heating Deadband The
144. ma 4 2 3 Outdoor Air Quality oaq Al 4 20 ma J4 5 6 Safety Chain Feedback safety DI 24 VAC J1 9 Compressor Safety compstat DI 24 VAC J1 2 Fire Shutdown firedown DI 24 VAC 41 10 Enthalpy Switch enthalpy DI 24 VAC 2 6 7 Humidistat Input Status humstat DI 24 VAC J5 7 8 CONFIGURABLE INPUTS Space Relative Humidit sprh Al 4 20 ma pem Air Relative 1 Al 420 Supply Fan Status fanstat DI 24 VAC Filter Status filtstat DI 24 VAC ve mum a Remote Occupancy Input remocc DI 24 VAC OUTPUTS Economizer Commanded Position econocmd 4 20ma J2 5 Supply Fan Relay State sf DO Relay 24VAC 1A J1 4 Compressor 1 Relay State comp 1 DO Relay 24VAC 1A J1 8 Compressor 2 Relay State comp 2 DO Relay 24VAC 1A J1 7 Heat Stage 1 Relay State heat_1 DO Relay 24VAC 1A J1 6 Heat Stage 2 Relay State heat_2 DO Relay 24VAC 1A J1 5 Power Exhaust Relay State aux 2 DO Relay 24VAC 1 J11 3 Dehumidification Relay State humizer DO Relay 24VAC 1 411 7 8 LEGEND Analog Input AO Analog Output DI Discrete Input DO Discrete Output These inputs if installed take the place of the default input on the specific channel according to schematic Parallel pins J5 1 J2 6 5 3 J1 10 J5 5 J1 2 are used for field installation Refer to the input configuration and accessory sections for more detail
145. maining tubing stubs when necessary Oil can ignite when exposed to torch flame WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death The unit must be electrically grounded in accordance with local codes and NEC ANSI NFPA 70 American National Standards Institute National Fire Protection Association Proceed as follows to inspect and prepare the unit for initial start up 1 Remove all access panels 2 Read and follow instructions on all WARNING CAUTION and INFORMATION labels attached to or shipped with unit WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Relieve pressure and recover all refrigerant before system repair or final unit disposal Wear safety and gloves when handling refrigerants Keep torches and other ignition sources away from refrigerants and oils 3 Make the following inspections a Inspect for shipping and handling damages such as broken lines loose parts or disconnected wires etc b Inspect for oil at all refrigerant tubing connections and on unit base Detecting oil generally indicates a refrigerant leak Leak test all refrigerant tubing connections using electronic leak detector halide torch or liquid soap solution c Inspect all field wiring and factory wiring connections Be sure that connections are completed and tight Be sure that wires are n
146. nal injury Understand the signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies a hazard which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation Edition Date 6 09 Catalog No 50TC 3SM Replaces 50TC 28M 50TC A WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Before performing service or maintenance operations on unit turn off main power switch to unit Electrical shock and rotating equipment could cause injury WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Units with convenience outlet circuits may use multiple disconnects Check convenience outlet for power status before opening unit for service Locate its disconnect switch if appropriate and open it Tag out this switch if necessary WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury death and or equipment damage Puron R 410A refrigerant systems operate at higher pressures than standard R
147. nect one side of the switch s NO contact set to LCTB s THERMOSTAT R terminal Connect the other side of the NO contact set to TB1 10 Setpoint for Dirty Filter is set at the switch See Fig 49 Filter Switch NO close on rising pressure high drop LCTB Thermostat C08216 Fig 49 PremierLink Filter Switch Connection When the filter switch s NO contact set closes as filter pressure drop increases indicating dirt laden filters the input signal to PremierLink causes the filter status point to read DIRTY Using Filter Timer Hours Refer to Rooftop PremierLink Installation Start up and Configuration Instructions Form 33CS 58SI for instructions on using the PremierLink Configuration screens and on unit alarm sequence Supply Fan Status Switch The PremierLink control can monitor supply fan operation through a field supplied installed differential pressure switch This sequence will prevent or interrupt operation of unit cooling heating and economizer functions until the pressure switch contacts are closed indicating proper supply fan operation Install the differential pressure switch in the supply fan section according to switch manufacturer s instructions Arrange the switch contact to be open on no flow and to close as pressure rises indicating fan operation Connect one side of the switch s NO contact set to LCTB s THERMOSTAT R terminal Connect the other side of the NO contact set to TB1 8 Setpoin
148. nerated Safety Chain Alarm safety chain Immediate Automatic Over load Indoor Fan or Electric Heater overheat Shutdown Alarm Generated Fire Shutdown Alarm fire alarm Immediate Automatic ae D dotoctor or Shutdown g Alarm Generated Tempe Immediate Shutdown Alarm Generated 5 Faulty shorted or open thermistor caused by SAT Sensor Alarm sat alarm Immediate Automatic m 5 Shutdown wiring error or loose connection 3 The space temperature has risen above the cool High Space Temp Alarm spt_hi Alarm Generated Automatic setpoint by more than the desired amount The space temperature has dropped below the Low Space Temp Alarm spt lo Alarm Generated Automatic heat setpoint by more than the desired amount High Supply Air Temp sat hi Alarm Generated Automatic GE ud UenT69 degrees ior more thans The supply air temperature is below 35 F for Low Supply Air Temp sat lo Alarm Generated Automatic more than 5 minutes Supply Fan Failed to Alarm Generated Tripped Circuit Breaker Broken belt Bad indoor sf fail Immediately Automatic fan motor Configuration incorrect Bad fan status Start disable Operation switch Alarm Generated Supply Fan in Hand sf hand Ramp down Automatic Bad Fan Status Switch Configuration incorrect Operations ressor Safety dx_compstat Alarm Generated Automatic Compressor would not start Setpoint Slider Alarm slide_alarm E Automatic for morethen Automatic
149. nfigured for high priority and the OAT 55 F and the SAT lt SPT 10 F the algorithm will enable the heat stages to maintain the SAT between the SPT and the SPT 10 F IAQ Pre Occupancy Purge This function is designed to purge the space of airborne contaminants that may have accumulated 2 hours prior to the beginning of the next occupied period The maximum damper position that will be used is temperature compensated for cold whether conditions and can be pre empted by Temperature Compensated Start function For pre occupancy to occur the following conditions must be met IAQ Pre Occupancy Purge option is enabled in the CONFIG configuration table Unit is in the unoccupied state Current Time is valid Next Occupied Time is valid Time is within 2 hours of next Occupied period Time is within Purge Duration user defined 5 to 60 minutes in the CONFIG configuration table OAT Reading is available If all of the above conditions are met the economizer damper IOMP is temporarily overridden the pre occupancy damper position PURGEMP The PURGEMP will be set to one of the following conditions based atmospheric conditions and the space temperature the OAT gt NTLO Unoccupied OAT Lockout Temperature and OAT 65 F and OAT is less than or equal to OCSP and Enthalpy Low then PURGEMP 100 If the OAT NTLO then PURGEMP LTMP Low Temperature Minimum Position defaults to 10
150. ng the frame in its track rotating the retainer back down and tighten all screws SUPPLY FAN BLOWER SECTION WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death Before performing service or maintenance operations on the fan system shut off all unit power and tag out the unit disconnect switch Do not reach into the fan section with power still applied to unit 50TC Supply Fan Belt Drive The supply fan system consists of a forward curved centrifugal blower wheel on a solid shaft with two concentric type bearings one on each side of the blower housing A fixed pitch driven pulley is attached to the fan shaft and an adjustable pitch driver pulley is on the motor The pulleys are connected using a V type belt See Fig 5 SS HAAG AS OKO COND C07087 Fig 5 Belt Drive Motor Mounting Belt Check the belt condition and tension quarterly Inspect the belt for signs of cracking fraying or glazing along the inside surfaces Check belt tension by using a spring force tool such as Browning s Part Number Belt Tension Checker or equivalent tool tension should be 6 lbs at a 5 8 in deflection when measured at the centerline of the belt span This point is at the center of the belt when measuring the distance between the motor shaft and the blower shaft NOTE Without the spring tension tool place a straight edge acros
151. nit Refer to the label on the unit cabinet for the list of approved heaters Unit heaters are marked with Heater Model Numbers But heaters are ordered as and shipped in cartons marked with a corresponding heater Sales Package part number See Table 5 for correlation between heater Model Number and Sales Package part number NOTE The value in position 9 of the part number differs between the sales package part number value is 1 and a bare heater model number value is 0 DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET MOUNTING FIELD SUPPLIED POINT BOX POST LIMIT SWITCH LOCATION HEATER COVERS OS SINGLE POINT MAIN BRACKET AND BOX HEATER HEATER HEATER CONTROL CONDUIT MOUNTING MODULE MODULE MOUNTING BOX DRIP BOOT SCREW LOCATION 1 LOCATION 2 BRACKET CONTROL WIRE TERMINAL BLOCK C08134 Fig 30 Typical Component Location TRACK FLANGE 08135 Fig 31 Typical Module Installation Single Point Boxes and Supplementary Fuses When the unit MOCP device value exceeds 60 A unit mounted supplementary fuses are required for each heater circuit These fuses are included in accessory Single Point Boxes with power distribution and fuse blocks The single point box will be installed directly under the unit control bo
152. nses both motor current and internal motor temperature When this switch reaches its trip setpoint the switch opens the power supply to the motor and the motor stops Reset is automatic when the motor windings cool down The Thermik device is a snap action overtemperature protection device that is imbedded in the motor windings It is a pilot circuit device that is wired into the unit s 24 v control circuit When this switch reaches its trip setpoint it opens the 24 v control circuit and causes all unit operation to cease This device resets automatically when the motor windings cool Do not bypass this switch to correct trouble Determine the cause and correct it The External motor overload device is a specially calibrated circuit breaker that is UL recognized as a motor overload controller It is an overcurrent device When the motor current exceeds the circuit breaker setpoint the device opens all motor power leads and the motor shuts down Reset requires a manual reset at the overload switch This device designated IFCB is located on the side of the supply fan housing behind the fan access panel Troubleshooting Supply Fan Motor Overload Trips The supply fan used in 50TC units is a forward curved centrifugal wheel At a constant wheel speed this wheel has a characteristic that causes the fan shaft load to DECREASE when the static pressure in the unit duct system increases and to INCREASE when the static pressure in the unit duc
153. o control the SAT to a supply air setpoint SASP based on the error from setpoint SASPSAT The SASP is determined by the routine If an economizer is not available or the conditions are not met for the following economizer routines below the compressors 1 and 2 will be cycled based on Y1 and Y2 inputs respectively 65 50TC Any time the compressors are running the PremierLink controller will lock out the compressors if the SAT becomes too low These user configurable settings are found in the SERVICE configuration table e Compressor 1 Lockout at SAT lt SATLOI 50 to 65 F default is 55 F Compressor 2 Lockout at SAT SATLO2 45 to 55 F default is 50 F After a compressor is locked out it may be started again after a normal time guard period and the supply air temperature has increased at least 8 F above the lockout setpoint Routine No 1 If the OAT lt DXLOCK OAT DX lockout temperature and DX Cooling Lockout is enabled when Y1 input is energized the economizer will be modulated to maintain SAT at the Supply Air Setpoint SASP SATLO1 3 F Supply Air Low Temp lockout for compressor 1 When Y2 is energized the economizer will be modulated to control to a lower SASP SATLO2 3 F Supply Air Low Temp lockout for compressor no 2 Mechanical cooling is locked out and will not be energized Routine No 2 If DXLOCK or DX Cooling Lockout is disabled lt OAT lt 68 F when Y1 input is
154. occupancy If configured for continuous occupied operation it will be energized whenever the controller is in the occupied mode and disabled when in the unoccupied mode If configured for damper position control it will be energized whenever the economizer exceeds the power exhaust setpoint and disabled when the economizer drops below the setpoint by a fixed hysteresis of 10 Heating The heating outputs are controlled by the Heating Control PID Loop and Heating Stages Capacity algorithm They will be used to calculate the desired number of stages needed to satisfy the space by comparing the SPT to the Occupied Heat Setpoint plus the T56 slider offset when occupied and the Unoccupied Heat Setpoint plus the T56 slider offset if unoccupied The following conditions must be true in order for this algorithm to run Indoor Fan has been ON for at least 30 seconds Cool mode is not active and the time guard between modes equals zero If occupied and SPT occupied heat setpoint plus T56 slider offset SPT reading is available e If it is unoccupied and the SPT lt unoccupied heat setpoint plus T56 slider offset The indoor fan will be turned on by the staging algorithm OAT High OAT lockout temperature If all of the above conditions are met the heating outputs will be energized as required otherwise they will be de energized If the SAT begins to exceed the high supply air setpoint a ramping function will cause
155. ode these functions are not available Fire Shutdown FSD Remote Occupied RMTOCC Compressor Safety CMPSAFE Supply Fan Status SFS and Filter Pressure Switch FILTER Economizer Controls Outdoor Air Enthalpy Control PNO 57 077 The enthalpy control 57 077 is available as field installed accessory to be used with the EconoMi er2 damper system The outdoor air enthalpy sensor is part of the enthalpy control The separate field installed accessory return air enthalpy sensor 57 078 is required for differential enthalpy control See below Locate the enthalpy control in the economizer hood Locate two GRA leads in the factory harness and connect these leads to enthalpy control sensors 2 and 3 See Fig 43 Connect the enthalpy control power input terminals to economizer actuator power leads RED connect to TR and BLK connect to TR LCTB ECON GRA 4 RA 7 Factory Wiring Harness C08218 Fig 43 Enthalpy Switch HH57AC077 Connections Enthalpy Switch The outdoor enthalpy changeover setpoint is set at the enthalpy controller The enthalpy control receives the outdoor air enthalpy from the outdoor air enthalpy sensor and provides a dry contact switch input to the PremierLink controller A closed contact indicates that outside air is preferred to the return air An open contact indicates that the economizer should remain at minimum position Differential Ent
156. oller connects to the bus in a daisy chain arrangement Negative pins on each component must be connected to respective negative pins and likewise positive pins on each component must be connected to respective positive pins The controller signal pins must be wired to the signal ground pins Wiring connections for CCN must be made at the 3 pin plug At any baud 9600 19200 38400 baud the number of controllers is limited to 239 devices maximum Bus length may not exceed 4000 ft with no more than 60 total devices on any 1000 ft section Optically isolated RS 485 repeaters are required every 1000 ft NOTE Carrier device default is 9600 baud Communication Bus Wire Specifications The CCN Communication Bus wiring is field supplied and field installed It consists of shielded 3 conductor cable with drain ground wire The cable selected must be identical to the CCN Communication Bus wire used for the entire network See Table 10 for recommended cable Table 10 Recommended Cables MANUFACTURER CABLE PART NO Alpha 2413 or 5463 American A22503 Belden 8772 Columbia 02525 NOTE Conductors and drain wire must be at least 20 AWG stranded and tinned copper Individual conductors must be insulated with PVC PVC nylon vinyl Teflon or polyethylene An aluminum polyester 10046 foil shield and an outer jacket of PVC PVC nylon chrome vinyl or Teflon with a minimum operating temperature range of 20
157. on also includes a manual switch with fuse located in a utility box and mounted on a bracket behind the convenience outlet access is through the unit s control box access panel See Fig 15 The primary leads to the convenience outlet transformer are not factory connected Selection of primary power source is a customer option If local codes permit the transformer primary leads can be connected at the line side terminals on unit mounted non fused disconnect or circuit breaker switch this will provide service power to the unit when the unit disconnect switch or circuit breaker is open Other connection methods will result in the convenience outlet circuit being de energized when the unit disconnect or circuit breaker is open See Fig 17 14 SCHEMATIC CONVENIENCE OUTLET S RED YEL BLU GRA 45 0 pu GRA CONNECT PER Lau RED LOCAL CODE TRAMA 7 95 YEL L 240V 49 oo P RED YEL BLU GRA SECONDARY dy 03 2 4 n ini 4 peel iis 12 SECONDARY T ioa 120V GROUND FAULT TRAMA INTERRUPTER CONVENTENCE L OUTLET 49 gt GRN YEL SECONDARY 2 sure FUSE BLK n B 15 AMP CO8283 UNIT CONNECT PRIMARY TRANSFORMER VOLTAGE AS CONNECTIONS TERMINALS 208 240 L1 RED YEL H1 230 12 H2 H4 L1 RED H1 46
158. one Controllers but it should not be used as an air source with ComfortID controllers unless a 3V zone controller is used as the Linkage Coordinator Contact your Carrier CCN controls representative for assistance Demand Limit If the demand limit option is enabled the control will receive and accept Redline Alert and Loadshed commands from the CCN loadshed controller When a redline alert is received the control will set the maximum stage of capacity equal to the stage of capacity that the unit is operating at when the redline alert was initiated When loadshed command is received the control will reduce capacity as shown in Table 22 Table 22 Loadshed Command Gas and Electric Heat Units CURRENT CAPACITY NEW CAPACITY CMP1 DX Cooling OFF CMP1 CMP2 CMP1 HS1 Heat OFF 51 52 HS3 HS1 The controller will have a maximum demand limit timer of 1 hour that prevents the unit from staying in load shed or redline alert longer than 1 hour in the event the controller loses communication with the network load shed module Should the maximum demand limit timer expire prior to receiving the loadshed device command from CCN the control will stop demand limit mode and return to normal operation RTU MP Sequence of Operation The RTU MP will control the compressor economizer and heating outputs based on its own space temperature input and setpoints An optional CO2 IAQ sensor mounted in the space can
159. ool setpoint If any of the above conditions are not met Unoccupied Free Cool mode will be stopped otherwise the mode will be controlled as follows The NTFC setpoint NTSP is determined as NTSP OCSP OHSP 2 The Unoccupied Free Cool mode will be started when SPT gt NTSP 2 F and SPT gt OAT 8 F The Unoccupied Free Cool mode will be stopped when SPT lt NTSP or SPT lt OAT 3 F Temperature Compensated Start This function will run when the controller is in unoccupied state and will calculate early start bias time SBT based on space temperature deviation from occupied setpoints in minutes per degree The following conditions will be met for the function to run Unit is in unoccupied state Next occupied time is valid Current time of day is valid Valid space temperature reading is available from sensor or linkage thermostat Cool Start Bias KCOOL and Heat Bias Start KHEAT gt 0 in the CONFIG configuration table The SBT is calculated by one of the following formulas depending on temperature demand If SPT gt OCSP then SBT SPT OCSP KCOOL If SPT OHSP then SPT OHSP SPT KHEAT The calculated start bias time can range from to 255 minutes When SBT is greater than 0 the function will subtract the SBT from the next occupied time to calculate a new start time When a new start time is reached the Temperature Compensated Start mode is started This mode energizes
160. ot in contact with refrigerant tubing or sharp edges d Inspect coil fins If damaged during shipping and handling carefully straighten fins with a fin comb 4 Verify the following conditions a Make sure that condenser fan blade are correctly positioned in fan orifice See Condenser Fan Adjustment section for more details b Make sure that air filter s is in place c Make sure that condensate drain trap is filled with water to ensure proper drainage d Make sure that all tools and miscellaneous loose parts have been removed START UP GENERAL Unit Preparation Make sure that unit has been installed in accordance with installation instructions and applicable codes Return Air Filters Make sure correct filters are installed in unit see Appendix II Physical Data Do not operate unit without return air filters Outdoor Air Inlet Screens Outdoor air inlet screen must be in place before operating unit Compressor Mounting Compressors are internally spring mounted Do not loosen or remove compressor hold down bolts 59 50TC Internal Wiring Check all electrical connections in unit control boxes Tighten as required Refrigerant Service Ports Each unit system has two 1 4 SAE flare with check valves service ports one on the suction line and one on the compressor discharge line Be sure that caps on the ports are tight Compressor Rotation On 3 phase units with scroll compressors i
161. r 1 to terminal TB4 1 Connect the VIO lead from Heater 2 to terminal TB4 2 Connect both BRN leads to terminal TB4 3 See Fig 34 CONDENSER COIL SERVICE Condenser Coil The condenser coil is new NOVATION Heat Exchanger Technology This is an all aluminum construction with louvered fins over single depth crosstubes The crosstubes have multiple small passages through which the refrigerant passes from header to header on each end Tubes and fins are both aluminum construction Connection tube joints are copper The coil may be one row or two row Two row coils are spaced apart to assist in cleaning 24 Repairing NOVATION Condenser Tube Leaks RCD offers service repair kit Part Number 50TJ660007 for repairing tube leaks in the NOVATION coil crosstubes This kit includes approved braze materials aluminum flux core braze rods a heat shield a stainless steel brush replacement fin segments adhesive for replacing fin segments and instructions specific to the NOVATION aluminum coil See EPIC for instruction sheet 99 4526379 The repair procedure requires the use of MAPP gas and torch must be supplied by servicer instead of conventional oxyacetylene fuel and torch While the flame temperature for MAPP is lower than that of oxyacetylene and thus provides more flexibility when working on aluminum the flame temperature is still higher than the melting temperature of aluminum so user caution is required Follow instructions c
162. r temperature resistance characteristic EconoMi er 2 The RTU MP control is used with EconoMi er2 option or accessory for outdoor air management The damper position is controlled directly by the RTU MP control EconoMid er 2 has no internal logic device 37 50TC Outdoor air management functions can be enhanced with field installation of these accessory control devices Enthalpy control outdoor air or differential sensors Space CO sensor Outdoor air CO sensor Field Connections Field connections for accessory sensors and input devices are made at the RTU MP at plugs J2 14 JS J11 and J20 field control wiring that connects to the RTU MP must be routed through the raceway built into the corner post as shown in Fig 56 The raceway provides the UL required clearance between high and low voltage wiring Pass the control wires through the hole provided in the corner post then feed the wires thorough the raceway to the RTU MP Connect to the wires to the removable Phoenix connectors and then reconnect the connectors to the board RACEWAY o xe HON 5 l HOLE IN END PANEL HIDDEN C08027 Fig 56 Field Control Wiring Raceway Space Temperature SPT Sensors A field supplied Carrier space temperature sensor is required with the RTU MP to monitor space temperature There are 3 sen
163. r to drain from the coil core and check for refrigerant leaks prior to start up NOTE Please see the NOVATION Condenser Service section for specific information on the coil CAUTION PERSONAL INJURY HAZARD Failure to follow this caution may result in personal injury or equipment damage Chemical cleaning should NOT be used on the aluminum microchannel condenser Damage to the coil may occur Only approved cleaning is recommended Routine Cleaning of Evaporator Coil Surfaces Monthly cleaning with Totaline environmentally sound coil cleaner is essential to extend the life of coils This cleaner is available from Carrier Replacement parts division as part number P902 0301 for one gallon container and part number P902 0305 for a 5 gallon container It is recommended that all round tube coil cleaner as described below Coil cleaning should be part of the unit s regularly scheduled maintenance procedures to ensure long life of the coil Failure to clean the coils may result in reduced durability in the environment Avoid the use of coil brighteners acid cleaning prior to painting high pressure washers poor quality water for cleaning Totaline environmentally sound coil cleaner is non flammable hypoallergenic non bacterial and a USDA accepted biodegradable agent that will not harm coil or surrounding components such as electrical wiring painted metal surfaces insulation Use of non recommended coil clean
164. r will maintain indoor air quality within the space at the user configured differential setpoint in the CONFIG configuration table The setpoint is the difference between the IAQI and an optional outdoor air quality sensor OAQ If the OAQ is not present then a fixed value of 400 ppm is used The actual space IAQ setpoint IAQS is calculated as follows IAOS 400 ppm if not present As air quality within the space changes the minimum position of the economizer damper will be changed also thus allowing more or less outdoor air into the space depending on the relationship of the IAOI to the IAOS The IAQ algorithm runs every 30 seconds and calculates IAQ minimum position value using a PID loop on the IAOI deviation from the IAOS The IAQ minimum position is then compared against the user configured minimum position MDP and the greatest value becomes the final minimum damper position IOMP If the calculated IAQ minimum position is greater than the IAQ maximum damper position decision in the SERVICE configuration table then it will be clamped to IAOMAXP value If IAQ is configured for low priority the positioning of the economizer damper can be overridden by comfort requirements If the SPT gt OCSP 2 5 or the SPT OHSP 2 5 then minimum position becomes 0 and the IOMP MDP The IAQ mode will resume when the SPT lt OCSP 1 0 and SPT gt OHSP 1 0 If IAQ is co
165. re set timer when Dirty Filter supply fan run time exceeded filter Dirty Filter Alarm filter Alarm Generated configured switch configuration wrong with or without switch Alarm Generated 3 3 More than one binary input is configured for the roba Configuration sw_cfg_alarm oe ured switch ee same purpose More then one discrete input is ontig y configured to provide the same function functions Misconfigured Analog fg al Configure More then one analog input is configured to Input an_cig_alarm 27522572212 correctly provide the same function analog inputs Alarm Generated Economizer and Low Faulty shorted or open thermistor caused by QAT Sensor Alarm eet alam ambient DX cooling Automati wiring error or loose connection lockout disabled Alarm Generated Sensor reading is out of range Bad sensor bad Space RH Sensor Alarm sprh_alarm men Automatic wiring or sensor configured incorrectly Outdoor RH Sensor rc Aiffomaii Sensor reading is out of range Bad sensor bad Alarm Sg ome wiring or sensor configured incorrectly High Space Humidity sprh_hi Alarm Generated Automatic ee then 70 Tor more then 10 Low Space Humidity sprh_lo Alarm Generated Automatic IRH is less then 35 for more then 10 minutes Alarm Generated Disables IAQ IAQ Sensor Alarm iaq_alarm Operation Automatic bad Economizer moves 9 9 to minimum position Alarm Generated Set Sensor reading is out of range Bad sensor
166. re met If the PremierLink controller is in the occupied mode and ASHRAE 90 1 Supply Fan is configured for Yes in the CONFIG table This will be determined by its own internal occupancy schedule if it is programmed to follow its local schedule or broadcast its local schedule as a global schedule or following a global schedule broadcast by another device If PremierLink controller is in the occupied mode and ASHRAE 90 1 Supply Fan is configured for No and there is a heat or cool demand fan auto mode If the PremierLink controller is in the occupied mode and ASHRAE 90 1 Supply Fan is configured for Yes when Linkage is active and the Linkage Coordinator device is sending an occupied mode flag When Temperature Compensated Start is active When Free Cool is active When Pre Occupancy Purge is active Whenever there is a demand for cooling or heating in the unoccupied mode Whenever the Remote Contact input is configured for Remote Contact RC DC 1 in SERVICE table and it is closed or the point is forced Closed via communications in the STATUSO1 points display table remote contact closed occupied remote contact open unoccupied Whenever the H3 EX RV point is configured for Dehumidification AUXOUT 5 in CONFIG table and it is in the unoccupied mode and the indoor RH exceeds the unoccupied humidity setpoint Whenever the Supply Fan Relay point is forced On in the STATUSO1 points display table The fan will also continue
167. represents the damper position above which the exhaust fans will be turned on When there is a call for exhaust the EconoMi er IV controller provides 45 x 15 second delay before exhaust fan activation to allow the dampers to open This delay allows the damper to reach the appropriate position to avoid unnecessary fan overload Minimum Position Control There is a minimum damper position potentiometer on the EconoMi er IV controller See Fig 72 The minimum damper position maintains the minimum airflow into the building during the occupied period When using demand ventilation the minimum damper position represents the minimum ventilation position for volatile organic compound ventilation requirements The maximum demand ventilation position is used for fully occupied ventilation When demand ventilation control is not being used the minimum position potentiometer should be used to set the occupied ventilation position The maximum demand ventilation position should be turned fully clockwise Adjust the minimum position potentiometer to allow the minimum amount of outdoor air as required by local codes to enter the building Make minimum position adjustments with at least 10 F temperature difference between the outdoor and return air temperatures 52 To determine the minimum position setting perform the following procedure 1 Calculate the appropriate mixed air temperature using the following formula OA
168. rmine what the suction temperature should be If suction temperature is high add refrigerant If suction temperature is low carefully recover some of the charge Recheck the suction pressure as charge is adjusted For Circuit 2 Repeat the procedure using Circuit 2 chart EXAMPLE Model 50TC D14 Circuit 1 Outdoor Temperature 85 F 29 C Suction 125 psig 860 kPa Suction Temperature should be 58 F 14 C08453 Circuit 2 Outdoor Temperature 85 F 29 Suction Pressure 120 psig 830 kPa Suction Temperature should be 60 F 16 C Compressors Lubrication Compressors are charged with the correct amount of oil at the factory CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in damage to components The compressor is in a Puron refrigerant system and uses a polyolester POE oil This oil is extremely hygroscopic meaning it absorbs water readily POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC refrigerants Avoid exposure of the oil to the atmosphere Replacing Compressor The compressor used with Puron refrigerant contains a POE oil This oil has a high affinity for moisture Do not remove the compressor s tube plugs until ready to insert the unit suction and discharge tube ends Compressor mounting bolt torque is 65 75 in lbs
169. ry bulb changeover control Additional accessories can be added to allow for different types of changeover control and operation of the EconoMi er IV and unit Outdoor Dry Bulb Changeover The standard controller is shipped from the factory configured for outdoor dry bulb changeover control The outdoor air and supply air temperature sensors are included as standard For this control mode the outdoor temperature is compared to an adjustable setpoint selected on the control If the outdoor air temperature is above the setpoint the EconoMi er IV will adjust the outside air dampers to minimum position If the outdoor air temperature is below the setpoint the position of the outside air dampers will be controlled to provided free cooling using outdoor air When in this mode the LED next to the free cooling setpoint potentiometer will be on The changeover temperature setpoint is controlled by the free cooling setpoint potentiometer located on the control See Fig 72 The scale on the potentiometer is A B C and D See Fig 73 for the corresponding temperature changeover values EXHAUST FAN SET POINT LED LIGHTS WHEN EXHAUST CONTACT IS MADE MINIMUM DAMPER POSITION SETTING MAXIMUM DAMPER DEMAND CONTROL VENTILATION SET POINT LED LIGHTS WHEN DEMAND CONTROL VENTILATION INPUT IS ABOVE SET POINT DEMAND CONTROL VENTILATION SET POINT LED LIGHTS WHEN OUTDOOR AI
170. s for the supply fan economizer and Power Exhaust These independent outputs can operate simultaneously with other Field Service Test modes All outputs return to normal operation when Field Service Test is turned off The Cooling submenu is used to change output status for the individual compressors and the dehumidification relay Compressor starts are not staggered The fans and heating service test outputs are reset to OFF for the cooling service test Indoor fans and outdoor fans are controlled normally to maintain proper unit operation All normal cooling alarms and alerts are functional NOTE Circuit A is always operated with Circuit B due to outdoor fan control on Circuit A Always test Circuit A first and leave it on to test other Circuits The Heating submenu is used to change output status for the individual heat stages gas or electric The fans and cooling service test outputs are reset to OFF for the heating service test All normal heating alarms and alerts are functional Configuration The RTU MP controller configuration points affect the unit operation and or control Review and understand the meaning and purpose of each configuration point before changing it from the factory default value The submenus containing configuration points are as follows Unit Cooling Heating Inputs Economizer IAQ Clock Set and User Password USERPW Each configuration point is described below under its according submenu See RTU
171. s property optimizes MS TP network communications by preventing token passes and poll for master requests to non existent Master nodes i e in the above example MAC address 16 would know to pass the token back to MAC address 1 instead of counting up to MAC address 127 Each MS TP master node on the network must have their Max Masters set to this same value The default is 127 50TC Table 15 Manufacture Date When troubleshooting you may need to know a control module s manufacture date a Obtain the manufacture date from Notes Module status report modstat To obtain a modstat with BACviewS 1 Press Function FN key and hold 2 Then press period 3 Release both buttons The report shows the date under Main board hardware module board Serial No RMPYMxxxxN Sticker on the back of the main control Bar Coded amp Typed Number ten years The serial numbers are unique and contain embedded information RMP first three digits are unique to RTU MP and are used as an identifier YM These two digits identify the last digit of the year and month in hex A 10 Oct of manufacture 74 would represent a date of manufacture of April 2007 These four digits represent the sequential number of units produced for a given product for the mentioned manufacturing time period This final digit represents the decade and toggles be
172. s the belt surface at the pulleys then deflect the belt at mid span using one finger to a 1 2 in deflection Adjust belt tension by loosening the motor mounting plate front bolts and rear bolt and sliding the plate toward the fan to reduce tension or away from fan to increase tension Ensure the blower shaft and the motor shaft are parallel to each other pulleys aligned Tighten all bolts when finished To replace the belt 1 Use a belt with same section type or similar size Do not substitute a FHP type belt When installing the new belt do not use a tool screwdriver or pry bar to force the belt over the pulley flanges this will stress the belt and cause a reduction in belt life 2 Loosen the motor mounting plate front bolts and rear bolts 3 Push the motor and its mounting plate towards the blower housing as close as possible to reduce the center distance between fan shaft and motor shaft 4 Remove the belt by gently lifting the old belt over one of the pulleys 5 Install the new belt by gently sliding the belt over both pulleys and then sliding the motor and plate away from the fan housing until proper tension is achieved 6 Check the alignment of the pulleys adjust if necessary 7 Tighten all bolts 8 Check the tension after a few hours of runtime and re adjust as required Adjustable Pitch Pulley on Motor The motor pulley is an adjustable pitch type that allows a servicer to implement changes in th
173. ses from header to header on each end Tubes and fins are both aluminum construction with various optional coatings see Model Number Format Connection tube joints are copper The coil may be one row or two row Two row coils are spaced apart to assist in cleaning one 7 MANIFOLD MICROCHANNELS 07273 Fig 8 NOVATION Heat Exchanger Coils Evaporator Coil The evaporator coil is traditional round tube plate fin technology Tube and fin construction is of various optional materials and coatings see Model Number Format Coils are multiple row Coil Maintenance and Cleaning Recommendation Routine cleaning of coil surfaces is essential to maintain proper operation of the unit Elimination of contamination and removal of harmful residues will greatly increase the life of the coil and extend the life of the unit The following maintenance and cleaning procedures are recommended as part of the routine maintenance activities to extend the life of the coil 50TC Remove Surface Loaded Fibers Surface loaded fibers or dirt should be removed with a vacuum cleaner If a vacuum cleaner is not available a soft non metallic bristle brush may be used In either case the tool should be applied in the direction of the fins Coil surfaces can be easily damaged fin edges can be easily bent over and damage to the coating of a protected coil if the tool is applied across the fins NOTE Use of a water stream such as a
174. sors available for this application 33ZCTSSSPT space temperature sensor with override button 33ZCT56SPT space temperature sensor with override button and setpoint adjustment e 33ZCT59SPT space temperature sensor with LCD liquid crystal display screen override button and setpoint adjustment Use 20 gauge wire to connect the sensor to the controller The wire is suitable for distances of up to 500 ft Use a three conductor shielded cable for the sensor and setpoint adjustment connections If the setpoint adjustment slidebar is not required then an unshielded 18 or 20 gauge two conductor twisted pair cable may be used Connect T 55 Connect T 55 See Fig 38 for typical T 55 internal connections Connect the T 55 SEN terminals to RTU MP J20 1 and J20 2 See Fig 57 C08460 Fig 57 RTU MP T 55 Sensor Connections Connect T 56 See Fig 40 for T 56 internal connections Install a jumper between SEN and SET terminals as illustrated Connect T 56 terminals to RTU MP J20 1 J20 2 and J20 3 per Fig 58 CR mz Jumper lt SETY 08461 Fig 58 RTU MP T 56 Sensor Connections Connect T 59 The T 59 space sensor requires a separate isolated power supply of 24 VAC See Fig 59 for internal connections at the T 59 Connect the SEN terminal BLU to RTU MP J20 1 Connect the COM terminal BRN to J20 2 Connect the SET terminal STO or BLK to J20 3 Ew ___ BLK STO SENS
175. st determine the damper voltage output for minimum or base ventilation Base ventilation is the ventilation required to remove contaminants during unoccupied periods The following equation may be used to determine the percent of outside air entering the building for a given damper position For best results there should be at least a 10 degree difference in outside and return air temperatures OA TR To x 100 100 TM To Outdoor Air Temperature OA Percent of Outdoor Air Tg Return Air Temperature RA Percent of Return Air Tm Mixed Air Temperature Once base ventilation has been determined set the minimum damper position potentiometer to the correct position The same equation can be used to determine the occupied or maximum ventilation rate to the building For example an output of 3 6 volts to the actuator provides a base ventilation rate of 5 and an output of 6 7 volts provides the maximum ventilation rate of 20 or base plus 15 cfm per person Use Fig 78 to determine the maximum setting of the sensor For example an 1100 ppm setpoint relates to a 15 cfm per person design Use the 1100 ppm curve on Fig 78 to find the point when the CO2 sensor output will be 6 7 volts Line up the point on the graph with the left side of the chart to determine that the range configuration for the CO2 sensor should be 1800 ppm The EconoMi er IV controller will output the 6 7 volts from the CO sensor to the actuator when
176. stages needed to satisfy the space by comparing the Space Temperature SPT to the Occupied Cool Setpoint plus the T56 slider offset when occupied and the Unoccupied Cool Setpoint UCSP plus the T56 slider offset if unoccupied The economizer if available will be used for cooling in addition to the compressors The following conditions must be true in order for this algorithm to run Indoor Fan has been ON for at least 30 seconds Heat mode is not active and the time guard between modes equals zero If occupied and the SPT gt occupied cool setpoint plus the T56 slider offset Space Temperature reading is available If it is unoccupied and the SPT gt unoccupied cool setpoint plus the T56 slider offset The indoor fan will be turned on by the staging algorithm If economizer is available and active and economizer open gt 85 and SAT gt SAT low limit 5 F and SPT gt effective setpoint 0 5 F OR Economizer is available but not active OR Economizer is not available OAT DX Lockout temperature If all of the above conditions are met the compressors will be energized as required otherwise they will be de energized 73 50TC There is a fixed 3 minute minimum on time and a 5 minute off time for each compressor output and a 3 minute minimum time delay between staging up or down Any time the compressors are running the RTU MP will stage down the compressors if the SAT becomes less th
177. t are equipped with additional controls and accessories to accomplish this function This function also requires a space relative humidity sensor be installed on the input When in the occupied mode and the indoor relative humidity is greater then the Occupied High Humidity setpoint H3 EX RV output point will be energized When in the unoccupied mode and indoor relative humidity is greater then the Unoccupied High Humidity setpoint then the H3 EX RV output point and supply fan output will be energized There is a fixed 5 hysteresis that the indoor relative humidity must drop below the active setpoint to end the dehumidification mode and deenergize the H3 EX RV output If the PremierLink controller is in the unoccupied mode then the fan relay will deenergize if there is no other mode requiring to the fan to be on This function will not energize mechanical cooling as a result of the indoor relative humidity exceeding either setpoint A high humidity alarm will be generated if the indoor relative humidity exceeds the high humidity setpoint by the amount configured in the Control Humidity Hysteresis in the ALARMS table for 20 minutes The alarm will return to normal when the indoor relative humidity drops 3 below the active humidity setpoint Economizer The economizer dampers are used to provide free cooling and indoor air quality if optional CO sensor is installed and when the outside conditions are suitable
178. t for Supply Fan Status is set at the switch See Fig 50 Fan Pressure Switch NO close on rise in pressure Thermostat TB1 PL 4 08118 Fig 50 PremierLink Wiring Fan Pressure Switch Connection Remote Occupied Switch The PremierLink control permits a remote timeclock to override the control s on board occupancy schedule and place the unit into Occupied mode This function may also provide a Door Switch time delay function that will terminate cooling and heating functions after a 2 20 minute delay See Fig 51 Connect one side of the NO contact set on the timeclock to LCTB s THERMOSTAT R terminal Connect the other side of the timeclock contact to the unit s TB1 2 terminal Remote Occupied Poele M pe 4 Time Clock TB1 PL 2 4432 C08214 Fig 51 PremierLink Wiring Remote Occupied 33 50TC Refer to Rooftop PremierLink Installation Start up and Configuration Instructions Form 33CS 58SI for additional information on configuring the PremierLink control for Door Switch timer function Power Exhaust Output Connect the accessory Power Exhaust contactor coils s per Fig 52 Power Exhaust TB1 PL GEB man is LCTB THERMOSTAT 08120 Fig 52 PremierLink Power Exhaust Output Connection Space Relative Humidity Sensor The RH sensor is not used with 50TC models at this time CCN Communication Bus The PremierLink contr
179. t is important to be certain compressor is rotating in the proper direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gauges to suction and discharge pressure fittings 2 Energize the compressor 3 The suction pressure should drop and the discharge pressure should rise as is normal on any start up If the suction pressure does not drop and the discharge pressure does not rise to normal levels 1 Note that the evaporator fan is probably also rotating in the wrong direction 2 Turn off power to the unit and install lockout tag 3 Reverse any two of the unit power leads 4 Re energize to the compressor Check pressures The suction and discharge pressure levels should now move to their normal start up levels NOTE When the compressor is rotating in the wrong direction the unit will make an elevated level of noise and will not provide cooling Cooling Set space thermostat to OFF position To start unit turn on main power supply Set system selector switch at COOL position and fan switch at AUTO position Adjust thermostat to a setting approximately 5 F 3 C below room temperature Both compressors start on closure of contactors Check unit charge Refer to Refrigerant Charge section Reset thermostat at a position above room temperature Both compressors will shut off Evaporator fan will shut off after a 30 second delay The supply fan and both compressors
180. t keyway of pulley hub and tighten setscrew to torque specifications To align fan and motor pulleys 1 Loosen fan pulley setscrews 2 Slide fan pulley along fan shaft Make angular alignment by loosening motor from mounting 3 Tighten fan pulley setscrews and motor mounting bolts to torque specifications 4 Recheck belt tension Bearings This fan system uses bearings featuring concentric split locking collars The collars are tightened through a cap screw bridging the split portion of the collar The cap screw has a Torx T25 socket head To tighten the locking collar hold the locking collar tightly against the inner race of the bearing and torque the cap screw to 65 70 in lb 7 4 7 9 Nm See Fig 7 C08121 Fig 7 Tightening Locking Collar Motor When replacing the motor also replace the external tooth lock washer star washer under the motor mounting base this is part of the motor grounding system Ensure the teeth on the lock washer are in contact with the motor s painted base Tighten motor mounting bolts to 120 12 in lbs Changing Fan Wheel Speed by Changing Pulleys The horsepower rating of the belt is primarily dictated by the pitch diameter of the smaller pulley in the drive system typically the motor pulley in these units Do not install a replacement motor pulley with a smaller pitch diameter than provided on the original factory pulley Change fan wheel speed by changing the fan pulley larger
181. t system decreases and fan airflow rate increases Motor overload conditions typically develop when the unit is operated with an access panel removed with unfinished duct work in an economizer open mode or a leak develops in the duct system that allows a bypass back to unit return opening Condenser Fan Motor Protection The condenser fan motors are internally protected against overtemperature Control Circuit 24 V The control circuit is protected against overcurrent conditions by a circuit breaker mounted on control transformer TRAN Reset is manual 22 ELECTRIC HEATERS 50TC units may be equipped with field installed accessory electric heaters The heaters are modular in design with heater frames holding open coil resistance wires strung through ceramic insulators line break limit switches and a control contactor One or two heater modules may be used in a unit Heater modules are installed in the compartment below the indoor supply fan outlet Access is through the indoor access panel Heater modules slide into the compartment on tracks along the bottom of the heater opening See Fig 29 31 DISCONNECT MOUNTING LOCATION INDOOR UNIT BLOCK OFF OUTDOOR ACCESS PANEL ACCESS PANEL PANEL C08133 Fig 29 Typical Access Panel Location Not all available heater modules may be used in every unit Use only those heater modules that are UL listed for use in a specific size u
182. t the BAS is configured to speak 2 wire EIA 485 to the controller The BAS may have to configure jumper or DIP switches on their end 4 Verify that the BAS and the controller have the same communication settings 8 data bits No Parity and 1 stop bit 5 Verify that the controller has a unique Modbus slave address The controller s Modbus slave address is set by its rotary address switches 6 Verify that the BAS is using the proper Modbus function codes to access data from our controller Supported function codes are shown above 7 Verify proper wiring between the BAS and the controller 8 Verify that the BAS is reading or writing to the proper Modbus register numbers on the controller Download the latest points list for the controller to verify 9 Verify that the BAS is sending his requests to the proper slave address of our controller NOTE See RTU MP 3rd Party Integration Guide or alternatively RTU MP Controls Start Up Operation and Troubleshooting Instructions Form 48 50 1 Appendix for Modbus Protocol Conformance Statement N2 1 Verify that the BAS and controller are both set to speak the N2 protocol The protocol of the controller is set via SW3 switches 3 4 5 and 6 The protocol can also be verified by getting a Modstat of the controller through the BACview Hit the FN key and the key at the same time to pull up a Modstat Scroll to the bottom of the page and there is a section entitled N
183. tart up and Configuration Instructions Form 33CS 58SI for detailed configuration information Smoke Detector Fire Shutdown FSD This function is available only when PremierLink is configured for Space Sensor Mode The unit is factory wired for PremierLink FSD operation when PremierLink is factory installed On 50TC units equipped with factory installed Smoke Detector s the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit s LCTB input The FSD function is initiated via the smoke detector s Alarm NO contact set The PremierLink communicates the smoke detector s tripped status to the CCN building control See Fig 25 for unit smoke detector wiring Alarm state is reset when the smoke detector alarm condition is cleared and reset at the smoke detector in the unit If the PremierLink mode has been changed to Thermostat disconnect the BLU lead from LCTB DDC 1 at TB1 6 Y2 and tape off before connecting the thermostat to TBI Filter Status Switch This function is available only when PremierLink is configured for Space Sensor Mode PremierLink control can monitor return filter status in two ways by monitoring a field supplied installed filter pressure switch or via supply fan runtime hours Using Switch Input Install the dirty filter pressure switch according to switch manufacturer s instructions to measure pressure drop across the unit s return filters Con
184. tem Puron R 410A refrigerant is provided in pink rose colored cylinders These cylinders are available with and without dip tubes cylinders with dip tubes will have a label indicating this feature For a cylinder with a dip tube place the cylinder in the upright position access valve at the top when removing liquid refrigerant for charging For a cylinder without a dip tube invert the cylinder access valve on the bottom when removing liquid refrigerant Because Puron R 410A refrigerant is a blend it is strongly recommended that refrigerant always be removed from the cylinder as a liquid Admit liquid refrigerant into the system in the discharge line If adding refrigerant into the suction line use a commercial metering expansion device at the gauge manifold Remove liquid from the cylinder pass it through the metering device at the gauge set and then pass it into the suction line as a vapor Do not remove Puron R 410A refrigerant from the cylinder as a vapor Refrigerant Charge Amount of refrigerant charge is listed on the unit s nameplate Refer to Carrier GTAC2 5 Charging Recovery Recycling and Reclamation training manual and the following procedures Unit panels must be in place when unit is operating during the charging procedure No Charge Use standard evacuating techniques After evacuating system weigh in the specified amount of refrigerant 50TC 5 8 HEX This surface provides a metal
185. ter contactor No 2 HC2 will be energized and heater module No 2 is energized Cooling Unit With EconoMi er IV For Occupied mode operation of EconoMi er IV there must be a 24 v signal at terminals TR and N provided through PL6 3 from the unit s IFC coil Removing the signal at N places the EconoMi er IV control in Unoccupied mode During Occupied mode operation indoor fan operation will be accompanied by economizer dampers moving to Minimum Position setpoint for ventilation If indoor fan is off dampers will close During Unoccupied mode operation dampers will remain closed unless a Cooling by free cooling or DCV demand is received When free cooling using outside air is not available the unit cooling sequence will be controlled directly by the space thermostat as described above as Cooling Unit Without Economizer Outside air damper position will be closed or Minimum Position as determined by occupancy mode and fan signal When free cooling is available as determined by the appropriate changeover command dry bulb outdoor enthalpy differential dry bulb or differential enthalpy a call for cooling Y1 closes at the thermostat will cause the economizer control to modulate the dampers open and closed to maintain the unit supply air temperature at 50 to 55 F Compressor will not run 64 During free cooling operation a supply air temperature SAT above 50 F will cause the dampers to modulate between Minimum Position
186. the CO2 concentration in the space is at 1100 ppm The DCV setpoint may be left at 2 volts since the CO sensor voltage will be ignored by the EconoMi er IV controller until it rises above the 3 6 volt setting of the minimum position potentiometer Once the fully occupied damper position has been determined set the maximum damper demand control ventilation potentiometer to this position Do not set to the maximum position as this can result in over ventilation to the space and potential high humidity levels Sensor Configuration The CO sensor has preset standard voltage settings that can be selected anytime after the sensor is powered up See Table 19 Use setting 1 or 2 for Carrier equipment See Table 19 1 Press Clear and Mode buttons Hold at least 5 seconds until the sensor enters the Edit mode 2 Press Mode twice The STDSET Menu will appear Table 19 EconoMi er IV Sensor Usage ECONOMISER IV WITH OUTDOOR AIR DRY APPLICATION BULB SENSOR Accessories Required Outdoor Air None The outdoor air dry bulb sensor is Dry Bulb factory installed Differential Dry Bulb CRTEMPSNO02A00 Single Enthalpy HH57AC078 Differential Enthalpy 57 078 and CRENTDIFO04A00 CO for DCV Control using a Wall Mounted ee a Sensor for DCV Control using BSZCSENCO T and O DuctMounted 33ZCASPCO2 Sensor CRENTDIFO04A00 an
187. the Heat Stages Capacity algorithm to decrease the number of stages until the SAT has dropped below the setpoint There is a fixed one minute minimum on time and a one minute off time for each heat output Heat staging has a 3 minute stage up and 30 second stage down delay Indoor Air Qualit If the optional indoor air quality sensor is installed the RTU MP will maintain indoor air quality within the space at the user configured differential setpoint The setpoint is the difference between the indoor air quality and an optional outdoor air quality sensor If the outdoor air quality is not present then a fixed value of 400ppm is used The following conditions must be true in order for this algorithm to run The mode is occupied ndoor Fan has been ON for at least 30 seconds ndoor Air Quality sensor has a valid reading As air quality within the space changes the minimum position of the economizer damper will be changed thus allowing more or less outdoor air into the space depending on the relationship of the indoor air quality to the differential setpoint If all the above conditions are true the IAQ algorithm will run and calculates an IAQ minimum position value using a PID loop The IAQ minimum damper position is then compared against the user configured economizer minimum position and the greatest value becomes the final minimum damper position of the economizer output If the calculated IAQ minimum position is greater than
188. this caution may result in personnel and authority concern If the smoke detector is connected to a fire alarm 3 system first notify the proper authorities that the detector is undergoing maintenance then disable the relevant circuit to avoid generating a false alarm O Smoke Detector Controller e Auxiliary 1 Disconnect power from the duct detector then remove equipment the sensor s cover See Fig 27 2 Using a vacuum cleaner clean compressed air or a soft bristle brush remove loose dirt and debris from inside the sensor housing and cover BOF m SD TRK4 Supervision relay contacts 3 Use isopropyl alcohol and lint free cloth to remove 13 5 M dirt and other contaminants from the gasket on the 18 Vdc Power gt es 5 sensor s cover YY Alarm _ Ze 3 Squeeze the retainer clips on both sides of the optic added by installer 15 housing then lift the housing away from the printed Reset Test circuit board ET eh 4 Gently remove dirt and debris from around the optic iets plate and inside the optic housing 5 Replace the optic housing and sensor cover T 6 Connect power to the duct detector then perform a Fig 26 Remote Test Reset Station Connections sensor alarm test CAUTION
189. tion This procedure is used to prepare the EconoMi er IV for troubleshooting No troubleshooting or testing is done by performing the following procedure NOTE This procedure requires a 9 v battery 1 2 kilo ohm resistor and a 5 6 kilo ohm resistor which are not supplied with the EconoMi er IV IMPORTANT Be sure to record the positions of all potentiometers before starting troubleshooting 54 m 10 11 12 Disconnect power at TR and TR1 All LEDs should be off Exhaust fan contacts should be open Disconnect device at P and P1 Jumper P to Disconnect wires at T and T1 Place 5 6 kilo ohm resistor across T and T1 Jumper TR to 1 Jumper TR to N If connected remove sensor from terminals SO and Connect 1 2 kilo ohm 4074EJM checkout resistor across terminals SO and Put 620 ohm resistor across terminals SR and Set minimum position DCV setpoint and exhaust potentiometers fully CCW counterclockwise Set DCV maximum position potentiometer fully CW clockwise Set enthalpy potentiometer to D Apply power 24 vac to terminals TR and Differential Enthalpy To check differential enthalpy 1 Make sure EconoMi er IV preparation procedure has been performed Place 620 ohm resistor across SO and Place 1 2 kilo ohm resistor across SR and The Free Cool LED should be lit Remove 620 ohm resistor across SO and The Free Cool LED should
190. to metal seal when torqued into the seat Appropriate handling is required to not scratch or dent the surface Part No EC39EZ067 DEPRESSOR PER ARI 720 01 035 FROM FACE OF BODY 7 16 20 UNF RH Fig 9 CoreMax Access Port Assembly Low Charge Cooling Using Cooling Charging Charts Fig 10 11 12 and 13 vary refrigerant until the conditions of the appropriate chart are met Note the charging charts are different from type normally used Charts are based on charging the units to the correct superheat for the various operating conditions Accurate pressure gauge and temperature sensing device are required Connect the pressure gauge to the service port on the suction line Mount the temperature sensing device on the suction line and insulate it so that outdoor ambient temperature does not affect the reading Indoor air cfm must be within the normal operating range of the unit TC D 08 14 Charging To prepare the unit for charge adjustment Disable bypass all head pressure controls Start run both compressors On sizes 08 and 12 ensure both condenser fans are running To Use Cooling Charging Charts Select the appropriate unit charging chart For size D08 use Fig 10 For size D12 use Fig 11 For size D14 use separate charts for each circuit as marked in Fig 12 and Fig 13 For Circuit 1 Take the outdoor ambient temperature and read the Circuit 1 suction pressure gauge Refer to unit charging chart to dete
191. to run as long as compressors are on when transitioning from occupied to unoccupied with the exception of Fire Shutdown mode If the Fire Shutdown input point is closed or forced in the STATUSO1 points display table the fan will be shutdown immediately regardless of the occupancy state or demand The PremierLink controller has an optional Supply Fan Status input to provide proof of airflow If this is enabled the point will look for a contact closure whenever the Supply Fan Relay is on If the input is not enabled then it will always be the same state as the Supply Fan Relay The cooling economizer and heating routines will use this input point for fan status Cooling The compressors are controlled by the Cooling Control Loop that is used to calculate the desired SAT needed to satisfy the space It will compare the SPT to the Occupied Cool Setpoint OCSP the T56 slider offset STO when occupied and the Unoccupied Cool Setpoint UCSP Unoccupied Cooling Deadband if unoccupied to calculate a Cooling Submaster Reference CCSR that is then used by the staging algorithm Cooling submaster loop to calculate the required number of cooling stages The economizer if available will be used as the first stage of cooling in addition to the compressors This loop runs every minute The following conditions must be met in order for this algorithm to run indoor fan has been ON for at least 30 seconds heat mode is not active and the tim
192. tor must be in run position for economizer to operate 2 PremierLink control requires that the standard 50HJ540569 outside air sensor be replaced by either the CROASENROO014A00 dry bulb sen sor or HH57A077 enthalpy sensor 3 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500 ohm resistor Fig 69 EconoMi er2 with 4 to 20 mA Control Wiring 48 ECONOMI ER2 PLUG C08310 Table 18 IV Input Output Logic INPUTS OUTPUTS Enthalpy Compressor N Terminalt Demand Control Ventilation DCV Outdoor Return 8 dd Os Damper High On On On Free Cooling LED Low On Off On Off Minimum position Closed Below set Off Off Off Off DCV LED Off L On On On Off Modulating between min Modulating between Free Cosik d LED On High On Off Off Off position and full open closed and full open Off Off Off Off Minimum position Closed High On On On On Modulatingtt between min Modulatingtt between Low On Off On Off position and DCV closed and DCV Free Cooling LED O Above set Off Off Off maximum maximum DCV LED On On Off Free Cooling LED On High 2 o zi Modulating Modulatingttt Forsingle enthalpy control the module compares outdoor enthalpy to the ABCD setpoint T N terminal
193. trifugal 1 Centrifugal Fan Diameter in 15x15 15x15 15x15 Condenser Coil Material Al Al Al Al Al Al Coil type NOVATION NOVATION NOVATION Rows FPI 1 20 1 20 2 20 Total Face Area 2 20 5 25 1 25 1 Condenser fan motor Qty Motor Drive Type 2 Direct 2 Direct 1 Direct Motor HP RPM 1 4 1100 1 4 1100 1 1175 Fan diameter in 22 22 30 Filters RA Filter Size in 4 16x20x2 4 20x20x2 4 20x20x2 OA inlet screen Size in 1 20x24x1 1 20x24x1 1 20x24x1 Al Aluminum Tube Aluminum Fin Al Copper Tube Aluminum Fin RTPF Round Tube Plate Fin TI 50TC APPENDIX III FAN PERFORMANCE General Fan Performance Notes 1 Interpolation is permissible Do not extrapolate 2 External static pressure is the static pressure difference between the return duct and the supply duct plus the static pressure caused by any FIOPs or accessories 3 Tabular data accounts for pressure loss due to clean filters unit casing and wet coils Factory options and accessories may add static pressure losses 4 The Fan Performance tables offer motor drive recommendations In cases when two motor drive combinations would work Carrier recommended the lower horsepower option 5 For information on the electrical properties of Carrier s motors please see the Electrical information section of this book 78 APPENDIX III FAN PERFORMANCE cont
194. turn air enthalpy conditions Install the outdoor air enthalpy control as described above Add and install a return air enthalpy Sensor Return Air Enthalpy Sensor Mount the return air enthalpy sensor 57 78 in the return air duct The return air sensor is wired to the enthalpy controller 57 077 See Fig 44 To wire the return air enthalpy sensor perform the following 1 Use a 2 conductor 18 or 20 AWG twisted pair cable to connect the return air enthalpy sensor to the enthalpy controller 2 At the enthalpy control remove the factory installed resistor from the SR and terminals 3 Connect the field supplied RED wire to spade connector on the return air enthalpy sensor and the SR terminal on the enthalpy controller Connect the BLK wire to S spade connector on the return air enthalpy sensor and the SR terminal on the enthalpy controller NOTE The enthalpy control must be set to the D setting for differential enthalpy control to work properly The enthalpy control receives the indoor and return enthalpy from the outdoor and return air enthalpy sensors and provides a dry contact switch input to the RTU MP controller A closed contact indicates that outside air is preferred to the return air An open contact indicates that the economizer should remain at minimum position Indoor Air Quality CO Sensor The indoor air quality sensor accessory monitors space carbon dioxide
195. turn off Return IV settings and wiring to normal after completing troubleshooting Single Enthalpy To check single enthalpy 1 2 3 4 Make sure EconoMi er IV preparation procedure has been performed Set the enthalpy potentiometer to A fully CCW The Free Cool LED should be lit Set the enthalpy potentiometer to D fully CW The Free Cool LED should turn off Return EconoMi er IV settings and wiring to normal after completing troubleshooting DCV Demand Controlled Ventilation and Power Exhaust To check DCV and Power Exhaust 1 Make sure EconoMi er IV preparation procedure has been performed Ensure terminals AQ and 1 are open The LED for both DCV and Exhaust should be off The actuator should be fully closed Connect a 9 v battery to AQ positive node and 1 negative node The LED for both DCV and Exhaust should turn on The actuator should drive to between 90 and 95 open Turn the Exhaust potentiometer CW until the Exhaust LED turns off The LED should turn off when the potentiometer is approximately 90 The actuator should remain in position Turn the DCV setpoint potentiometer CW until the DCV LED turns off The DCV LED should turn off when the potentiometer is approximately 9 v The actuator should drive fully closed Turn the DCV and Exhaust potentiometers CCW until the Exhaust LED turns on The exhaust contacts will close 30 to
196. tween N and M every Table 16 Basic Protocol Troubleshooting Problem Possible cause Corrective action No communication with 3rd party vendor Incorrect settings on SW1 SW2 and SW3 Verify and correct switch settings Cycle power to RTU MP after changing switch settings RS485 Port has no voltage output Verify RTU MP has correct power supply check with RTU MP disconnected from RS485 communication bus Possible bad driver on board Bacnet 9600 19 2K 01 to 045vdc Check 85485 bus for external before reconnecting to the bus Bacnet 38 4K 06 to 09vdc Voltage shorts or grounding Bacnet 76 8K 1vdc before reconnecting to the bus Modbus 2 9600 76 8K 124vdc 2 9600 124vdc Verify devices are daisy chained and repeaters and bias terminators are correctly installed Check 3rd party vendor RS485 communication wiring guidelines and troubleshooting procedures MaxInfo Frames This property defines the maximum number of responses that will be sent when our controller gets the token A valid number is any positive integer The default is 10 and should be ideal for the majority of applications In cases where the controller is the target of many requests this number could be increased as high as 100 or 200 NOTE MS IP networks can be comprised of both 02 Master and Slave nodes Valid MAC addresses for Master nodes
197. ually cleared on the alarm reset screen after the maintenance has been completed The timer will then begin counting its runtime again for the next maintenance interval Factory Default 0 hr NOTE Setting this configuration timer to 0 disables the alarm Compressor2 Service Hours This refers to the timer set for the Compressor 2 Runtime Alarm After the number of hours set on this point is exceeded the corresponding alarm will be generated and must be manually cleared on the alarm rest screen after the maintenance has been completed The timer will then begin counting its runtime again for the next maintenance interval Factory Default 0 hr NOTE Setting this configuration timer to 0 disables the alarm Cooling Number of Compressor Stages This refers to the number of mechanical cooling stages available on a specific unit Set this point to Stage if there is one compressor in the specific unit set to Two Stage if there are two compressors in the unit and set to None if economizer cooling ONLY is desired Factory Default 2 One Stage for 1 compressor units Two Stage for 2 compressor units Cooling Econ SAT Low Setpt The supply air temperature must remain above this value to allow cooling with the economizer and or compressors There is 5 F plus and minus deadband to this point If the SAT falls below this value during cooling all compressors will be staged off The economizer will start to ramp down to m
198. uation can be found in the SERVICE configuration table descriptions in this manual Note that that the OAT is taken into consideration to avoid large changes in damper position when the OAT is cold ECONPOS SubGain x ECONSR SAT CTRVAL where SubGain OAT TEMPBAND ESG 1 If the OAT DXLOCK DX Cool Lockout setpoint then the damper will be modulated to maintain the SAT at the ECONSR value If the OAT is between DXLOCK and 68 F DXLOCK lt OAT lt 68 F and additional cooling is required the economizer will close the to minimum position for three minutes the economizer integrator will then be reset to 0 and begin modulating to maintain the SASP after the stage has been energized for about 90 seconds This will allow the economizer to calculate a new ECONSR that takes into account the cooling effect that has just been turned on and not return to the value require before the cooling was added This will prevent the economizer from causing premature off cycles of compressors while maintaining the low SAT temperature setpoint for the number of stages active In addition to preventing compressor short cycling by using return air across the evaporator coil just after the compressor has started allows for increased refrigerant flow rates providing for better oil return of any oil washed out during compressor start up If the OAT gt 68 F and OAT lt SPT and the number of DX stages requested is gt 0 by the staging algorith
199. upplied fan pulley part no 11 012 motor pulley part no KR11HY161 and belt part no KR30AE035 2 Recommend using field supplied fan pulley part no KR11AZ002 and belt part no KR29AF054 50TC D08 3 PHASE 7 5 TON VERTICAL SUPPLY AVAILABLE EXTERNAL STATIC PRESSURE IN WG CFM 0 2 0 4 0 6 0 8 1 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard Static Option Medium Static Option 2250 511 0 53 591 0 73 660 0 95 722 1 19 779 1 44 2438 540 0 64 616 0 85 683 1 08 743 1 33 799 1 59 2625 569 0 76 642 0 99 706 1 23 765 819 1 76 2813 599 0 90 669 1 14 731 1 39 788 1 66 841 1 94 3000 630 1 06 696 1 31 756 1 58 811 1 86 863 2 15 3188 661 1 23 724 1 50 782 1 78 836 2 07 886 2 38 3375 692 1 43 1 71 809 2 00 861 2 31 910 2 62 3563 782 1 94 836 2 25 887 2 56 934 2 89 3750 755 1 89 811 2 20 864 2 52 913 2 84 959 3 18 AVAILABLE EXTERNAL STATIC PRESSURE IN WG CFM 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Medium Static Option High Static Option 2250 832 1 71 882 1 99 928 2 29 973 2 59 1015 2 92 2438 851 1 87 899 2 16 945 2 46 989 2 78 1031 3 11 2625 870 2 04 918 2 34 1006 2 98 1048 3 32 2813 890 2 24 937 2 55 1024 3 21 1065 3 55 3000 912 2 46 958 2 78 1043 3 45 1083 3 80 3188 934 2 69 979 3 02 1022 3 36 1063 3 72 1102 3375 956 2 95 1000 3 29 1042 3 64 1083 4 00 3563 980 3 23 1023 3 58 1064 3 94 3750 1004 3 54 1046 3 90
200. will shut off To shut off unit set system selector switch at OFF position Resetting thermostat at a position above room temperature shuts unit off temporarily until space temperature exceeds thermostat setting Heating To start unit turn on main power supply Set system selector switch at HEAT position and set thermostat at a setting above room temperature Set fan at AUTO position First stage of thermostat energizes the first stage electric heater elements second stage energizes second stage electric heater elements if installed Check heating effects at air supply grille s If electric heaters do not energize reset limit switch located on evaporator fan scroll by pressing button located between terminals on the switch To Shut Off Unit Set system selector switch at OFF position Resetting thermostat at a position below room temperature temporarily shuts unit off until space temperature falls below thermostat setting Ventilation Continuous Fan Set fan and system selector switches at ON and OFF positions respectively Evaporator fan operates continuously to provide constant air circulation START UP PREMIERLINK CONTROLS WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death The unit must be electrically grounded in accordance with local codes and NEC ANSI NFPA 70 American National Standards Institute National Fire Protection Association
201. x just to the left of the partition separating the indoor section with electric heaters from the outdoor section The Single Point Box has a hinged access cover See Fig 32 The Single Point Box also includes a set of power taps to complete the wiring between the Single Point Box and the unit s main control box terminals Refer to accessory heater and Single Point Box installation instructions for details on tap connections 23 50TC Table 5 Heater Model Number Bare Heater Model Number R H E A T E R 0 0 1 A 0 0 Heater Sales Package PNO Includes Bare Heater R H E A Carton and packing materials Installation sheet CONTROL BOX BUSHING SINGLE POINT BOX MOUNTING SCREWS DRIP BOOT BRACKET MOUNTING SCREWS POWER WIRES FOAM BUSHING HEATER RELAYS HEATER MOUNTING SCREWS C08136 Fig 32 Typical Single Point Installation On 50TC units all fuses are 60 A Single point boxes containing fuses for 208 230 V applications use UL Class RK5 250 V fuses Bussman FRNR 60 or Shawmut TR 60R Single point boxes for 460 V and 575 V applications use UL Class T 600 V fuses Bussman JJS 60 or Shawmut A6T 60 Note that all heaters are qualified for use with a 60 A fuse regardless of actual heater ampacity so only 60 A fuses are necessary Unit heater applications not requiring supplemental fuses require
202. y result in personnel and authority concern Pressing the controller s test reset switch for longer than seven seconds will put the duct detector into the alarm state and activate all automatic alarm responses Dirty Controller Test Procedure 1 Press the controller s test reset switch for two seconds 2 Verify that the controller s Trouble LED flashes Dirty Sensor Test The dirty sensor test provides an indication of the sensor s ability to compensate for gradual environmental changes A sensor that can no longer compensate for environmental changes is considered 10046 dirty and requires cleaning or replacing You must use a field provided SD MAG test magnet to initiate a sensor dirty test The sensor s Dirty LED indicates the results of the dirty test as shown in Table 2 CAUTION OPERATIONAL TEST HAZARD Failure to follow this caution may result in personnel and authority concern Holding the test magnet against the sensor housing for more than seven seconds will put the duct detector into the alarm state and activate all automatic alarm responses Table 2 Dirty LED Test FLASHES DESCRIPTION 1 0 25 dirty Typical of a newly installed detector 2 25 50 dirty 3 51 75 dirty 4 76 99 dirty Dirty Sensor Test Procedure 1 Hold the test magnet where indicated on the side of the sensor housing for two seconds 2 Verify that the sensor s Dirty LED flashes CAUTION

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