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Carrier 48TC**16 Air Conditioner User Manual

1. k Wiring 23 Schematic 46 PremierLin Fig C11202 na TOULNOD XNIT83IN3Ud 005 WHO2 N22 805015 1384401 4131 69 ovi 3 woo 8 E me ou Nag 8 5 nig nas 8 wie ne mec S KO as S KED li 2 5 FEED o KO a 9 Ir 6 mee 3 ve 5 KO 010 5 210838 ONY 120 40320 13 5501 35 133130 5 9010019 N3HM 102 381 08 08 31 NO 810801 03111191510 380913 91 01 1102812 1111015 01 8 1 31 1 013 LON 300 0 1 211 1325 081908 1 31 SALON 67 E D DI
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3. 47 7 Catalog No 48TC 14SI Replaces 4810 1151 48TC 16 Copyright 2011 Carrier Corp e 7310 W Morris St e Indianapolis IN 46231 Printed in U S A Edition Date 05 11 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 48
4. a BRN O 0 ori BRN 5150130411 M ei Se e 0 vio YD vio vio Oi C51 vio TERMINAL BOARD CENTRAL SEE NOTE dii 15T STD TIER YAC CONTROL W DEHUMIDIFICATION 208 230V 460V 575V 3 OFM DUAL COMPRESSOR CH B3CSENTHSW HUMIDISTAT ACCESSORY Eso LS BRN O 2 au RED O ORN BLK O BRN ECONOMIZER FIOP ACCESSORY 10 C11205 Fig 68 RTU Open System Control Wiring Diagram with Humidi MiZer L 34 ZAV TRANI 3 8 BRN OL UNIT SHUTDOWN BRN RED IPM OL RED ak ph RED o RED RED BRN
5. C10885 Fig 27 Conduit into Control Box If the field disconnect is larger than 100A it must be attached to the unit using accessory CRDISBKT001A00 disconnect switch bracket see Fig 28 Follow the instructions provided with this accessory For smaller field disconnects be sure to use 1 2 screws to mount 6 disconnect directly to the end panel see Fig 29 In either case set the disconnect vertical location on the unit so that a 90 fitting can be used to connect the conduit to the disconnect HIE III 111111 e C10853 Fig 28 Mounting Position for Field Disconnects over 100A 14 The piping for the condensate drain and external trap can be completed after the unit is in place See Fig 25 2 51 MIN MINIMUM PITCH 1 25mm PER 10 3m OF LINE BASE RAIL OPEN VENT SEE NOTE gt ROOF CURB DRAIN PLUG NOTE Trap should be deep enough to offset maximum unit static difference A 4 102 trap is recommended 008022 Fig 25 Condensate Drain Piping Details All units must have an external trap for condensate drainage Install a trap at least 4 in 102 mm deep and protect against freeze up If drain line is installed downstream from the external trap pitch the line away from the unit at 1 111 per 10 ft 25 mm in 3 m
6. r lt rrr 501 500940 8 1 lt FPNK O PNK 6 9 5 amp 1 Ka lt be lt 8 2 1 x x 5j 9 EN PL6 R 108 55000 ENTHALPY ECONOMIZER FIOP 10 n H Tve HUMIDITY CY RELAT Irc E e maa 4 orm CCHR1 S ON TERMINAL BOARD ARE CUT WHEN ADDING 3 242 9888 SA Ge Ge 1 ESIGNATE TERMINAL BOARD SCHEMATIC LAYOUT DOES NOT MATCH ACTUAL TERMINAL SMOKE DETECTORS PHASE LOSS RELAY OCCUPANCY AND REMOTE SHUTDOWN NOTES 1 C11204 Fig 67 RTU Open System Control Wiring Diagram 33
7. 48TC 16 All Units All field wiring must comply with NEC and all local requirements Size wire based on MCA Minimum Circuit Amps on the unit informative plate See Fig 31 and the unit label diagram for power wiring connections to the unit power terminal blocks and equipment ground Maximum wire size is 2 0 AWG per pole Provide a ground fault and short circuit over current protection device fuse or breaker per NEC Article 440 or local codes Refer to unit informative data plate for MOCP Maximum Over current Protection device size Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate See Table 10 On 3 phase units voltages between phases must be balanced within 2 and the current within 10 Use the formula shown in the legend for Table 10 see Note 2 on page 45 to determine the percent of voltage imbalance All units except 208 230 v units are factory wired for the voltage shown on the nameplate If the 208 230 v unit is to be connected to a 208 v power supply the control transformer must be rewired by moving the black wire with the in female spade connector from the 230 v connection and moving it to the 200 v 1 4 in male terminal on the primary side of the transformer Refer to unit label diagram for additional information A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage
8. C11201 Fig 42 Typical Humidi MiZer Adaptive Dehumidification System Humidistat Wiring EDGE Pro THERMIDISTAT Unit CTB THERMOSTAT Re Rh O W1 1 i 9 Lu CE g 5 Y2 Ol Fd 3 cime MEE See OW2 B 4 1 RR Y1 ih I I 4 pem r 2 4 HE I oro c R RRS HUM o Ae 01 O1 F F m 5 THERMOSTAT D2 1 i LTLO I V EE Vg O Hee Connection not required C09298 Fig 43 Typical Rooftop Unit with Humidi MiZer Adaptive Dehumidification System with EDGE Pro Thermidistat Device 21 Part Number 33CSPREMLK EBD comport System PremierLinR Unit Designation NX 4 20 INDOOR COMPR HEAT EXHAUST ECONOMIZER FANMOTOR 1 amp 2 LOW HIGH RVS VALVE OUTPUTS d C08199 PremierLink Factory Option HVAC SENSOR INPUTS SPACE TEMP SET POINT SUPPLY AIR TEMP OUTDOOR TEMP INDOOR AIR QUALITY OUTDOOR AIR QUALITY RA 3 DUAL MODE SENSOR S
9. 48TC 16 PL21 1 PL21 3 gt ich Lu ROVI Rove wove BRN or PNK 507M501287 m ONLY ve lI mao 4 rt Ko SPEED TFC Ho H 1 EQUIP GR H ma ON TERMINAL BOARD ARE CUT WHEN ADDING OSS RELAY OCCUPANCY AND REMOTE SHUTDOWN OFM DETECTORS PH DDC FIOP ACCESSORY 48TC 16 Table 8 RTU Open Controller Inputs and Outputs POINT NAME EEE TYPE OF I O NUMBER OT DEDICATED INPUTS Space Temp Zone Temp zone temp Al 10
10. Y asx gt T SS i BASE PLATE FOR GFCI RECEPTACLE C09022 Fig 35 Weatherproof Cover Installation 17 Test the GFCI receptacle by pressing the TEST button on the face 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 SCHEMATIC CONVENIENCE OUTLET RED YEL BLU GRA Wa I 12 W RED YEL BLU GRA 2 SECONDARY ve 120 240V OTES N t BLU 1 CONNECT PER BEDS LOCAL CODE RED 2 FOR 240V SUPPLY CONNECT BLU TO GRA AND RED TO YEL TRANA A TRAN4 RED GRA b d 600V 12 03 H1 12 8 HT SECONDARY 120V GROUND FAULT SET INTERRUPTER CONVENIENCE ds ei OUTLET 14 11 GFI CO x2 V i 6 e Si GRN YEL SECONDARY 5 120 SWITCH FUSE BLK C08283 UNIT CONNECT PRIMARY TRANSFORMER VOLTAGE AS CONNECTIONS TERMINALS 208 240 L1 RED YEL 230 L2 BLU GRA 80 H1 H3 H2 H4 L1 RED H1 460 4 Splice BLU YEL H2 H3 L2 GRA H4 L1 RED H1 Fig 34 Unit Powered Convenience Outlet Wiring Fuse on power type The factory fuse is a Bussman Fusetron T 15 non renewable screw in Edison base type plug fuse A WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in
11. EQUIP GR RMINAL BOARD ARE CUT WHEN ADDING RCUIT TRACES H e H lava OCC SAFE FSD SFS FILTER OFM DISCRETE 0000 33353 PREMIERLINK CONTROL Oden 1081102 gt KERE PREMLERLINK Bu 3 amoa SMOKE DETECTORS PHASE LOSS RELAY OCCUPANCY AND REMOTE SHUTDOWN mmmn X E 8 cca 7 FIOP ACCESSORY DDC Su Ex 31Y 180NNO ore 501 501289 vuoz C11203 Fig 47 PremierLink Wiring Schematic with Humidi MiZer 24 48TC 16 48TC 16 NOTE The sensor must be mounted in the discharge airstream downstream of t
12. N Pwd CO Transformer 2 2 Convenience Outlet GFCI Lm Disconnect Access Panel C10361 Fig 32 Convenience Outlet Location 48TC 16 48TC 16 Installing Weatherproof Cover A weatherproof while in use cover for the factory installed convenience outlets is now required by UL standards This cover cannot be factory mounted due 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 The kit includes the hinged cover a backing plate and gasket DISCONNECT ALL POWER TO UNIT AND CONVENIENCE OUTLET LOCK OUT AND TAG OUT ALL POWER Remove the blank cover plate at the convenience outlet discard the blank cover Loosen the two screws at the GFCI duplex outlet until approximately 1 2 in 13 mm under screw heads are exposed Press the gasket over the screw heads 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 Mount the weatherproof cover to the backing plate as shown in Fig 35 Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover Check for full closing and latching COVER WHILE IN USE WEATHERPROOF RECEPTACLE NOT INCLUDED
13. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components Such operation would invalidate any applicable Carrier warranty NOTE Check all factory and field electrical connections for tightness Units Without Factory Installed Disconnect When installing units provide a disconnect switch of adequate size per NEC National Electrical Code Disconnect sizing data is provided on the unit informative plate Locate on unit cabinet or within sight of the unit per national or local codes Do not cover unit informative plate if mounting the disconnect on the unit cabinet Units with Factory Installed Disconnect The factory installed option disconnect switch is located in a weatherproof enclosure located under the main control box The manual switch handle is accessible through an opening in the access panel Discard the factory test leads see Fig 31 The factory disconnect is an 80A disconnect 15 AVERTISSEMENT ies RS HR 1 C10854 Fig 29 Mounting Position for Field Disconnects up to 100A Field power wires are connected to the unit at line side pressure lugs at the main terminal block TB1 or at factory installed option non fused disconnect switch Max wire size is 2 AWG copper only See Fig 31 NOTE TEST LEADS Unit may be equipped with short leads pigtails on the field line c
14. 9119 1 109211 Hot 9 9 138 1 IEN v 1 601 m o 2 110 1 325 GUN 9111340 LING 398V7 4 TIVE 36013 0 jO 11 1 110110 0 n ROTA HIV jO 01137110 8 1015 1 2 3 NO 14 V 30 11 5 gun Ol 0 1300 13318 19 9 91 ST1VW30IS 10 99313011110 NI 3NV MLISN3O 801 NYO 1 31007 2 ST3NYd 93300 3101 901 13831 8803 ayn 4008 ON3 40 of 91 1 0841 LINN WoW uIv 3 YIY 1 1 BUND NO 1518 1300 10 S39NYT1 HIN 56 gt 0 011140405 01311 S3QIS v a 19nd 1 OUND HLIM 031 491 0 1195110103 0 1 0 2 74 0 011 14409 1313 NOTLVINSNI 48 031 14408 01313 1 31 1140 011 14409 1313 01815 3 dal 14408 01314 1131 ONT 40 03I 1ddflS e ONTHSV14 06 L 7 S9NIN3dO LONG 3217 1 10501 330003 HONT 2 115 9 8 NIW 51311970 0311 0 0 2 2 5 CAUTION PROPERTY DAMAGE HAZARD Failure to follow this caution may result in damage to roofing materials Membrane roofs can be cut by sharp sheet metal edges Be careful when placing any sheet metal parts on such roof Step 6 Rig and Place Unit When the unit is ready to be rigged and no longer will be lifted by a fork truck the wood protector under the basepan
15. MN MAX 48HC 14 5 0 in wg 1250 Pa 13 0 in wg 3240 Pa A CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in damage to equipment When connecting the gas line to the unit gas valve the installer MUST use a backup wrench to prevent damage to the valve Install a gas supply line that runs to the unit heating section Refer to the NFPA 54 NFGC or equivalent code for gas pipe sizing data Size the gas supply line to allow for a maximum pressure drop of 0 5 in wg 124 Pa between gas regulator source and unit gas valve connection when unit is operating at high fire flow rate The gas supply line can approach the unit in three ways horizontally from outside the unit across the roof thru curb under unit basepan accessory kit required or through unit basepan factory option or accessory kit required Consult accessory kit installation instructions for details on these installation methods Observe clearance to gas line components per Fig 16 shutoff valve be located upstream of the sediment trap See Figs 20 and 21 for typical piping arrangements for gas piping that has been routed through the sidewall of the curb See Fig 22 for typical piping arrangement when thru base is used Ensure that all piping does not block access to the unit s main control box or limit the required working space in front of the control box Unit Base Rail C07469 Fig 20 Gas Pipi
16. o ka Ki 23 4 590 51 RETURN MR SUPPLY AIR C10864A 52 1 8 1344 ECONOMIZER HOOD VERTICAL TWO POSITION DAMPER HOOD VERTICAL AND HORIZONTAL OPTIONAL 46 1 8 1190 61 1 8 15521 e I RETURN AIR VERTICAL 1 gt 1 22 2 15731 I l E 1 CONDENSATE l DRAIN OPENING SUPPLY 1 Sie IN BASEPAN AIR 2 VERTICAL I SEE 18 1 8 4 THRU THE BASE 4591 CHARI NOTES 1 DIMENSIONS ARE IN INCHES DIMENSIONS IN ARE IN MILLIMETERS 2 9 CENTER OF GRAVITY 3 DIRECTION OF AIR FLOW 3801 44 114 4 t 1241 icy REMOVABLE LA 35 ELECTRICAL EN d DISCONNECT Al LOCATION CONTROL BOX SEN ACCESS PANEL FACTORY H INSTALLED DEE CONDENSER BESCH c3 INDOOR BLOWER INDOOR BLOWER COIL ACCESS PANEL ACCESS PANEL gt Hag Sem Ir I E gt H mith vlt 4 5 8 N 1117 Fr 1 NN 1 0 L Oof plal cin gaye m Ant 22 314 951 3501 671 49 1 2 518 112571 63 3 8 1 3 4 115 3 4 11609 11961 LEFT 129401 _ 11 1 8 4 4 8 RONT 302 111 _ NET FILTERS 34 12 FILTER ECONOMIZER ACCESS PANEL 18761 DISPOSABLE FILTERS OUTSIDE AIR E
17. turn to the experts fH 48TC 16 Single Package Rooftop Gas Heating Electric Cooling Unit with Puron R 410A Refrigerant Size 16 Installation Instructions Units with Factory Installed Disconnect Convenience Outlets Factory Option Thru Base Connections Electrical Connections Units without Thru Base Connections Field Control Wiring Th rmostat 4 Unit without Thru Base Connection Kit Heat Anticipator Settings Humidi MiZer Control Connections Humidi MiZer Space RH Controller PremierLink Factory Option Supply Air Temperature SAT Sensor Outdoor Air Temperature OAT Sensor EconoMi er2 Field Connections Space Sensors Connect Thermostat Configure the Unit for Thermostat Mode Economizer Controls Indoor Air Quality CO2 sensor Outdoor Air Quality Sensor Space Relative Humidity Sensor or Humidistat Connections Smoke Detector Fire Shutdown FSD Filter Status Switch Supply Fan Status Switch Remote Occupied Switch Power Exhaust output CCN Communication Bus RTU Open Control System Supply Air Temperature SAT Sensor Outdoor Air Temperature OAT Sensor EconoMi er2 ya aya Field Connections Space Temperature SPT Sensors Indoor Air Quality CO2 Sensor NOTE Read the e
18. Refer to Table 8 RTU Open Controller Inputs and Outputs for locations of all connections to the RTU Open board RTU Open Control System The RTU Open control is factory mounted in the 48TC 16 unit s main control box to the left of the CTB See Fig 66 Factory wiring is completed through harnesses connected to the CTB Field connections for RTU Open sensors will be made at the Phoenix connectors on the RTU Open board The factory installed RTU Open control includes the supply air temperature SAT sensor The outdoor air temperature OAT sensor is included in the FIOP accessory EconoMi er2 package gt AO 1 Board Power z ud 9 3 5 5 5 5 25 e J3 9 _ 5 3 5 el P a A x 3 P OF 20MA D 9 8 lN lt 9 o m N ZIN 5 5 3 ee 5 Ra Gates 5 egg gt 6 7 RAZ of T E 288209 ERE BABS 5252088 8 8 E e 6 6 FE 322892323 gt 56 gt PED gt S KEE AO 2 GND E 0 10V only jJ Ek H i Humidistat LOCAL 3 DO 7 S ACCESS 7 Spare e PORT RNET d E 1 El DO 8 PE MSB LSB 3 Rnet Sai 1 rower Exhaust BKA FYE Rnet J11 CR2032 e sS yi GND 9694 5 SW1
19. T56 CCN CMPSAFE FILTER RAT SEN Analog 10k thermistor RAT SEN a CY CC LLL Discrete NA e x G Z Deeg 5 W Deeg Analog 4 2 Discrete 24VAC IAQ COM OAQ COM RH COM Analog 4 Digital 5 DC Digital 5 DC Output Discrete 24VAC Digital 5 DC Relative Humidity Thermostat Heat Stage 1 Thermostat Heat Stage 2 Thermostat Cool Stage 1 Thermostat Cool Stage 2 AUX OUT Power Exhaust RH W1 W2 Y1 Y2 26 CCN RED OAQ SEN RH SEN Analog 4 20mA CCN Gnd WET GON BLS Carrier Comfort Network communication bus Thermostat Fan Indoor Air Quality CO3 Outdoor Air Quality CO2 Return Air Temperature LEGEND CON G IAQ _ OAQ RAT _ 48TC 16 48TC 16 TB3 PL i TB3 PL 6 Jumper lt SETY SED C10022 Fig 52 PremierLink T 56 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 CTB s THERMOSTAT connection strip for these Connect the thermostat s Y1 Y2 W1 W2 and G terminals to PremierLink TB3 as shown in Fig 53 If the 48TC 16 unit is equipped with factory installed smoke detector s disconnect the factory BLU lead at TB3 6 Y2 before connecting the thermostat Identify the BLU lead originating at CTB DDC 1 disconnect at TB3 6 and tape off Confirm that the second BLU
20. must be removed Remove 4 screws from each base rail Wood protector will drop to the ground See instructions on the unit base rails Keep unit upright and do not drop Spreader bars are required Rollers may be used to move unit across a roof Level by using unit frame as a reference See Table 1 and Fig 5 for additional information 48TC 16 Lifting holes are provided in base rails as shown in Fig 5 Refer to rigging instructions on unit CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage All panels must be in place when rigging Unit is not designed for handling by fork truck Before setting the unit onto the curb recheck gasketing on curb A MAXIMUM ALLOWABLE DIFFERENCE IN MM C10001 Fig 4 Unit Leveling Tolerances Step 5 Field Fabricate Ductwork NOTE Cabinet return air static pressure a negative condition shall not exceed 0 35 in wg 87 Pa with economizer or 0 45 in wg 112 Pa without economizer For vertical ducted applications secure all ducts to roof curb and building structure Do not connect ductwork to unit Fabricate supply ductwork so that the cross sectional dimensions are equal to or greater than the unit supply duct opening dimensions for the first 18 in 458 mm of duct length from the unit basepan Insulate and weatherproof all external ductwork joints and roof openings with counter flashing and mastic in accordanc
21. of run Do not use a pipe size smaller than the unit connection 3 4 in Step 12 Make Electrical Connections A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Do not use gas piping as an electrical ground Unit cabinet must have an uninterrupted unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur This ground may consist of electrical wire connected to unit ground lug in control compartment or conduit approved for electrical ground when installed in accordance with NEC National Electrical Code ANSI NFPA 70 latest edition in Canada Canadian Electrical Code CSA Canadian Standards Association C22 1 and local electrical codes NOTE Field supplied wiring shall conform with the limitations of minimum 63 F 33 C rise Field Power Supply For those units without through the curb power conduit must be used to route the main power from the condenser end via the power entry in the corner post of the unit see Figs 26 and 27 to either the factory option disconnect or the bottom of the control box 1 conduit is provided wrapped around compressor A second conduit is provided with factory installed powered convenience outlet For those units that require conduit larger than 1 it must be field supplied Figs 26 and 27 show the wire routings 48TC 16
22. the floor beside the space temperature sensor For wiring distances up to 500 feet use a 3 conductor 18 or 20 AWG cable ACCN communication cable can be used although the shield is not required The shield must be removed from the sensor end of the cable if this cable is used See Fig 59 for wiring details Connect one side of the switch s NO contact set to CTB s THERMOSTAT R terminal Connect the other side of the NO contact set to TB3 8 Setpoint for Supply Fan Status is set at the switch See Fig 61 Fan Pressure Switch NO close on rise in pressure CTB Thermostat TB3 PL C10287 Fig 61 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 Connect one side of the NO contact set on the timeclock to CTB s THERMOSTAT R terminal Connect the other side of the timeclock contact to the unit s TB3 2 terminal See Fig 62 LCTB Remote Occupied Thermostat R Time Clock TB3 PL quce 2 C10288 Fig 62 PremierLink Wiring Remote Occupied Refer to Form 33CS 67SI for additional inf
23. A for navigation and screen content Cable Fig 79 BACview Handheld Connections 40 48TC 16 Table 9 LEDs The LEDs on the RTU Open Control Board see Fig 65 show the status of certain functions RTU Open has power f this LED is on RTU Open is receiving data from the network segment RTU Open is transmitting data over the network segment 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 2 flashes alternating with Run LED Five minute auto restart delay after system error 3 flashes Control module has just been formatted then off 4 flashes Two or more devices on this network have the then pause same ARC156 network address Exec halted after frequent system errors or control programs halted On _ Eecstan upabored Bootis running Firmware transfer in progress Boot is running 7 flashes per second alternating with Ten second recovery period after brownout Run LED 14 flashes per second Brownout alternating with Run LED 48TC 16 Failure Try the following solutions e Turn RTU Open off then on Format RTU Open Download memory to RTU Open e Replace RTU Open 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 co
24. Fig 10 Economizer Hood Package Location 5 Attach the post that separates the filters with the screws provided 6 Open the filter clips which are located underneath the hood top Insert the aluminum filters into the bottom filter rack hood divider Push the filter into position past the open filter clips Close the filter clips to lock the filters into place See Fig 14 7 Install the two rain deflectors on the edge of the hood top as shown in Fig 12 DIVIDER 45 OUTSIDE AIR CLEANABLE ALUMINUM FILTER BAROMETRIC RELIEF FILTER CLIP C10009 Fig 14 Economizer Filter Installation 8 Caulk the ends of the joint between the unit top panel and the hood top as shown in Fig 12 9 Replace the filter access panel Step 9 Install Flue Hood The flue hood is shipped screwed to the basepan beside the burner compartment access panel Remove the panel below the control box access panel to access the flue hood shipping location Using screws provided install flue hood and screen in location shown in Fig 15 4 AN Ww CONTROL BOX ACCESS PANEL FLUE HOOD C10804 Fig 15 Flue Hood Details 10 Economizer Hood and Two Position Hood NOTE If the power exhaust accessory is to be installed on the unit the hood shipped with the unit will not be used and must be discarded Save the aluminum filter for us
25. OF SUPPORTS X DIMENSION ft STEEL PIPE NOMINAL DIAMETER in 1 3 4 or 1 11 4 or larger 011121 Fig 16 Gas Piping Guide Factory Option Thru Base Connections Gas Connection This service connection kit consists of a 3 4 in NPT gas adapter fitting stainless steel a 5 in electrical bulkhead connector and a 1 gt in electrical bulkhead connector connected to an L bracket covering the embossed raised section of the unit basepan in the condenser section See Fig 17 1 2 ELECTRICAL BULKHEAD CONNECTOR 11 2 ELECTRICAL BULKHEAD CONNECTOR ADAPTER FITTING C10905 Fig 17 Thru the Base Option Shipping Position 1 Remove the L bracket assembly from the unit see Fig 17 2 Cut and discard the wire tie on the gas fitting Hand tighten the fitting if it has loosened in transit 3 Remove connector plate assembly from the L bracket and discard the L bracket but retain the washer head screws and the gasket located between the L bracket and the connector plate assembly NOTE Take care not to damage the gasket as it is reused in the following step 4 Place the gasket over the embossed area in the basepan aligning the holes in the gasket to the holes in the basepan See Fig 18 5 Install the connector plate assembly to the basepan using 8 of the washer head screws 11 Step 10 Install Gas Piping Installation of the gas piping must be accordance
26. Outlet Utilization Maximum Intermittent Use 15 Amps Maximum Continuous Use 8 Amps Observe a 50 limit on the circuit Loading above 8 Amps Utilisation de la prise utilitaire Usage intermittent maximum 15 Amps Usage continu maximum 8 Amps Observez une limite de 50 sur le circuit Chargement au dessus de 8 Amps C10077 Fig 33 Convenience Outlet Utilization Notice 16 Units Without Disconnect Option TB1 I I I I I ms I Disconnect I per I I NEC I kakapi ys L1 L2 L3 208 230 3 60 460 3 60 575 3 60 Units With Disconnect Option Factory Eo e 4 Disconnect 3 nae Switch Wiring E C10015 Fig 31 Power Wiring Connections Convenience Outlets A 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 Lock out and tag out this switch if necessary Two types of convenience outlets are offered on the 48TC 16 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 panel beneath the control box See Fig 32 Pwd CO ps Fuse 72 A
27. Start up and Configuration Instructions for detailed configuration information Outdoor Air Quality Sensor PNO 33ZCSENCO2 plus weatherproof enclosure The outdoor air CO2 sensor is designed to monitor carbon dioxide CO 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 56 The outdoor air CO sensor must be located in the economizer outside air hood 414 lt 3 3 4 6 1 2 SIDE VIEW COVER REMOVED C07135 Fig 56 Outdoor Air Quality Sensor Cover Wiring the Outdoor Air CO2 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 54 Connect the 4 to 20 mA terminal to the TB3 13 terminal of the Connect the SIG COM terminal to the TB3 11 terminal of the 48TC 16 See Fig 57 28 Economizer Controls Indoor Air Quality CO sensor The indoor air quality sensor accessory monitors space carbon dioxide CO2 levels This information is used to monitor IAQ levels Several types of sensors are available for wall mounting in the space or in return duct with and without LC
28. default input on the specific channel according to schematic Parallel pins J5 1 J2 6 J5 3 J1 10 J5 5 J1 2 are used for field installation EconoMi er2 The RTU Open control is used with EconoMi er2 option or accessory for outdoor air management The damper position is controlled directly by the RTU Open control EconoMif er2 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 Field Connections Field connections for accessory sensors and input devices are made the RTU Open at plugs J1 J2 J4 J5 J11 and 120 All field control wiring that connects to the RTU Open must be routed as shown in Fig 39 This routing provides the UL required clearance between high and low voltage wiring Connect to the wires to the removable Phoenix connectors and then reconnect the connectors to the board 35 The RTU Open controller requires the use of a Carrier space sensor A standard thermostat cannot be used with the RTU Open system Supply Air Temperature SAT Sensor On FIOP equipped 48TC 16 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 The SAT is factory wired The SAT prob
29. 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 83 Access is through the left side blower 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 C08245 Fig 83 Typical Supply Air Smoke Detector Sensor Location Completing Installation of Return Air Smoke Sensor 1 Unscrew the two screws holding the Ret
30. factory installed thru the base service connection option Prepare bottom condensate drain connection to suit planned condensate line routing refer to Step 9 for details Rig and place unit Install outdoor air hood Install condensate line trap and piping Make electrical connections Install other accessories Pad mounted installation Prepare pad and unit supports Check and tighten the bottom condensate drain connection plug Rig and place unit Convert unit to side duct connection arrangement Install field fabricated ductwork at unit duct openings Install outdoor air hood Install condensate line trap and piping Make electrical connections Install other accessories Frame mounted installation Frame mounted applications generally follow the sequence for a curb installation Adapt as required to suit specific installation plan C10772 Fig 3 Roof Curb Details S vr evi 91 1 62 911 3 SVOL Ly mA 2253 2113 3 27 88003 4004 20010100 1 91 1 vG 106 91 1 S pd 16 DIN 5 H r16 91 61 S 121 835 3 438 9 01 606 9 1 9 66 0191 ab 96 nL gt J NI SNOISN3WIQ 168E
31. in 230 mm away from the access panel to permit the panel to be removed for service If a regulator valve is installed it must be located a minimum of 4 ft 1220 mm away from the unit s flue outlet Some municipal codes require that the manual 48TC 16 48TC 16 BURNER ORIFICE A93059 Fig 23 Orifice Hole NOTE If orifice hole appears damaged or it is suspected to have been re drilled check orifice hole with a numbered drill bit of correct size Never re drill an orifice A burr free and squarely aligned orifice hole is essential for proper flame characteristics See Fig 23 Step 11 Install External Condensate Trap and Line The unit has one 4 in condensate drain connection on the end of the condensate pan and an alternate connection on the bottom See Fig 24 Unit airflow configuration does not determine which drain connection to use Either drain connection can be used with vertical or horizontal applications CONDENSATE PAN SIDE VIEW STANDARD DRAIN PLUG SIDEIDRAIN FACTORY INSTALLED ALTERNATE BOTTOM DRAIN C08021 Fig 24 Condensate Drain Pan Side View When using the standard side drain connection ensure the red plug in the alternate bottom connection is tight Do this before setting the unit in place The red drain pan can be tightened with a in square socket drive extension To use the alternate bottom drain connection remove the red drain plug from the bo
32. lead at TB3 6 remains connected to PremierLink J4 8 SPACE CTB THERMOSTAT THERMOSTAT cre THERMOSTAT C10283 Fig 53 Space Thermostat Connections If the 48TC 16 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 see Fig 49 installed in the space or in the return duct or it may be sensor PNO 33ZCSENSAT installed in the return duct Connect this sensor to TB3 1 and TB3 3 per Fig 50 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 Mode these functions are not available Fire Shutdown FSD Remote Occupied RMTOCC Compressor Safety CMPSAFE Supply Fan Status SFS and Filter Pressure Switch FILTER 27 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 b
33. of phase imbalance is satisfactory as it is below the Voltage Imbalance 100 x maximum allowable 2 Average IMPORTANT If the supply voltage phase imbalance is more than 2 contact your local electric utility company immediately 45 POTENTIOMETER DEFAULTS SETTINGS U U gt U U 1 U di 8 OWI XH M L r MINIMUM POS 1 4 OPEN ECONOMIZER FIOP ACCESSORY DCV MAX FULLY CLOSED DCV SET MIDDLE PNK ENTHALPY C SETTING VIO r BLK RED RED m M Du TR S TRI ECONOMIZER ACCESSORY o 1 MOTOR REMOTE MIN BRN POSITION POT e 2 5 85 BRN Se IN 135 PI i Du 28 24 2858 RED PNR U ac K Tt t M E HOT COM 8 WHT EM je 1 FOR sTo FOP ACCESSORY PNE OPEN SE UNIT ne TAQ SENSOR pcy RED BRN VIO 1 10 1 l i ACCY u max i e us n Sr 1 BRN IAQ O 2v 30V 1 2 6 DAMPER 5 E O d ocv 1 5 HS EH 9 40 5 GRA NOT UsED Ls RED 0 7 07 00 GRA sip GRA x ud T 7 amp Sa ENTHALPY SENSOR D sos e I YEL NOT use D BLU BUR so 2v AW d ORM i 191 10 0 LA 8 1 5 Sp FREE Wi ers YEL 1 x ST ACCESSORY 8 Se 21 1 j RAT ENTH
34. sw2 THE J14 sw3 a 0 Sie on 9 UI 41 Protocol Selector Remove j Input_10 T 55 Accy BACnet oth for or Net Input_11 T 56 Accy Comm C10811 Fig 65 RTU Open Multi Protocol Control Board race 7 1 m J 6162 j 610 1 man LED FIOP ACCESSORY n CCHR1 5 P 8 0 e a I CENTRAL T TERMINAL BOARD 5 166 Ie O sees ACCESSORY US im D Tue i 2 D A BM cuan I d CCHR2 i WI STATIC ACCESSORY ACCESSORY PMR 18 OPTION ier j TIMES 182 rA 40 OFM EQUIP GR C10810 Fig 66 48TC 16 Control Box Component Locations 32 48TC 16 50TM501232 8 SEE NOTE TERMINAL BOARD CENTRAL oss bro D an Ton Gb 200 UNIT SHUTDOWN T eg TRANI FROM POWER SCHEMATIC BRN YEL TH CB 151 YAC CONTROL 208 230V 460V 515V 3 OFM DUAL COMPRESSOR ORED o RED RED 17M OL 48TC 16 OS JMP T wor 5 P TIT IET
35. thermostat and will require a junction box and splice at the thermostat 18 Factory Option Thru Base Connections Electrical Connections This service connection kit consists of a in electrical bulkhead connector and a 1l in electrical bulkhead connector connected to an L bracket covering the embossed raised section of the unit basepan in the condenser section See Fig 36 The 2 in bulkhead connector enables the low voltage control wires to pass through the basepan The 1 3 in electrical bulkhead connector allows the high voltage power wires to pass through the basepan P sen BULKHEAD CONNECTOR 11 2 ELECTRICAL BULKHEAD CONNECTOR C10907 Fig 36 Thru the Base Option Shipping Position 1 Remove the L bracket assembly from the unit 2 Remove connector plate assembly from the L bracket and discard the L bracket but retain the washer head screws and the gasket located between the L bracket and the connector plate assembly NOTE Take care not to damage the gasket as it is reused in the following step 3 Place the gasket over the embossed area in the basepan aligning the holes in the gasket to the holes in the basepan See Fig 37 4 Install the connector plate assembly to the basepan using 8 of the washer head screws NOTE If electrical connections are not going to occur at this time tape or otherwise cover the fittings so that moisture does not get into the building o
36. to monitor IAQ 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 54 for typical CO 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 36 Space Temperature SPT Sensors There are two types of SPT sensors available from Carrier resistive input non communicating T55 T56 and T59 and Rnet communicating SPS SPPL SPP and SPPF s
37. 1 Y2 Y1 R Typical Thermostat Connections Note Typical multi function marking Follow manufacturer s configuration instructions to select Y2 Do not configure for O output C10903 Field Wiring Fig 38 Typical Low Voltage Control Connections C09295 Fig 40 Accessory Field Installed Humidistat 1 C09296 RELATIVE HUMIDITY 1 l 0 cums F IL actual temp 58 outside temp 21 PIL Fig 41 EDGE Pro Thermidistat 20 Humidi MiZer Control Connections Humidi MiZer Space RH Controller NOTE The Humidi MiZer is a factory installed option The Humidi MiZer dehumidification system requires a field supplied and installed space relative humidity control device This device may be a separate humidistat control contact closes on rise in space RH above control setpoint or a combination thermostat humidistat control device such as Carrier s EDGE Pro Thermidistat with isolated contact set for dehumidification control The humidistat is normally used in applications where a temperature control is already provided units with PremierLink control To connect the Carrier humidistat HL38MG029 1 Route the humidistat 2 conductor cable field supplied through the bushing the unit s louvered end panel see Fig 39 2 Route the cable through the snap in w
38. 2 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 56 The outdoor air CO sensor must be located in the economizer outside air hood 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 54 Connect the 4 to 20 mA terminal to RTU Open J4 5 Connect the SIG COM terminal to RTU Open J4 6 See Fig 73 OAQ Sensor RH Sensor JUS 24 VAC C10739 Fig 73 RTU Open Outdoor CO Sensor 33ZCSENCO2 Connections Relative Humidity Sensor Polarized Male Connector J4 1 or J4 4 24 VDC Supply Voltage J4 2 or J4 5 4 to 20 mA Current Loop Output to RTU OPEN 4 20 VAC GND 0 5V or 0 10V C10839 mA or Fig 75 Duct Relative Humidity Sensor Typical Wiring 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 ope
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40. 80 Locate the enthalpy control in the economizer next to the Actuator Motor Locate two GRA leads in the factory harness and connect the gray lead labeled ESL to the terminal labeled LOW See Fig 80 Connect the enthalpy control power input terminals to economizer actuator power leads RED connect to 24V and BLK connect to GND The outdoor enthalpy changeover setpoint is set at the enthalpy controller Duct smoke sensor controller Conduit nuts ram supplied by installer sc x 1 N G N Terminal block cover Aen ff S Cover gasket Controller housing and electronics 8 d ordering option Controller cover Conduit couplings D f supplied by installer Trouble Alarm Power Test reset switch C08208 Duct smoke sensor Exhaust tube Exhaust gasket D Sensor housing and electronics See SB Detail A QOG intake _ 2 lt e NS 35 lt gasket CA 57 Sy Cover gasket N ordering option AS s os TSD CO2 9s ordering option d K Plug ensor cover D x K Sampling tube 5 P2 ordered separately Coupling Detail A d amp S b Ki REN Magnetic c test reset switch O0 00 BE Alarm L Power Trouble L Dirty Fig 82 Smoke Detector Sensor Module C08209 42 To wire the return air enthalpy sensor perform the
41. ALPY SENSOR E 6200 eo I ee U Uv L pid BLK xol BLK s ila 3 313 eS 4 BRN il BRN E Ei p 1 nM ECONOMIZER NOTES A TAN RED 1 gt A RED O GRA H M 1 WATT 5 RESISTER Bay BL BE REMOVED ONLY WHEN 1 m li Fi 1 USING DIFFERENTIAL ENTHALPY OR DR 5 i IF A SEPERATE FIELD SUPPLIED ZA TRANSFORMER IS USED FOR THE GRA a H GRA O GRA TAQ SENSOR POWER SUPPLY IT CANNOT HAVE THE SECONDARY OF THE DS 5 ESL TRANSFORMER GROUN 9 1 3 FOR FIELD RENAE PED REMOTE MINIMUM For ORN ORN CONTROL MINIMUM POSITION POT TO THE MINIMUM POSITIO 12 0 B OPTIONS 4 WHEN NOT USING CO2 SENSOR THE DCV MAX POTENTIOMETER MUST NOT USED gt lt PK ONLY BE FULLY CLOSED FOR THE MINIMUM POSITION POTENTIOMETER TO 1 Zi 12 FUNCTION PROPERLY L l 5 GRAY H TAN WIRES ARE PART OF THE POWER EXHAUST ACCESSORY 41 GRA TAN TO PWR EXHAUST errr 5 ACCESSORY Unit Without Economizer or Economizer SEE ECONOMIZER NOTE 5 2 Position Damper 2 Position D osition Damper C10333 3 8 NES Fig 87 EconoMi er IV Wiring Barometric relief Power Exhaust Differential dry bulb sensor EconoMi er IV Outdoor enthalpy sensor Differential enthalpy sensor Time Guard II compressor anti cycle control Outdoor coil protector grille Head pressure control Programmable setback thermostat Electrical Mechanical thermostat and 6 Thermidistat device Humidistat Thermostat Sensors CO sensor DDC interface PremierLink L
42. D 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 54 for typical CO 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 C08635 Fig 54 Indoor Outdoor Air Quality CO Sensor 33ZCSENCO2 Typical Wiring Diagram 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 conne
43. It is attached to the economizer using two plastic tie wraps 1 2 To gain access to the hood remove the filter 5 3 Locate and cut the 2 plastic tie wraps being careful panel See Fig 9 t0 10 2 any wiring 10 3 Locate the 2 screws holding the metal tray to the 4 Carefully lift the hood assembly through the filter basepan and remove In order to remove the screws it access opening and assemble per the steps outlined in may be necessary to remove the panel underneath the Economizer Hood and Two Position Hood on page 10 two position damper Remove the two screws Locate and cut the 2 plastic tie wraps securing the assembly to the damper See Fig 11 Be careful to not damage any wiring or cut tie wraps securing any wiring 4 Carefully lift the hood assembly with metal tray through the filter access opening and assemble per the steps outlined in Economizer Hood and Two Position Hood on page 10 48TC 16 5 If removed reattach the panel under the damper WZ LP FILTER ACCESS PANEL Hood Parts A s COIL ACCESS PANEL CT 10004 Fig 9 Typical Access Panel Locations C Plastic Tie Wrap Qty 2 gt Remove Hood Parts Screws for Metal Tray Qty 2 L Cut Plastic Ties P 2 Places C10006 Fig 11 Two Position Damper Hood Package Location Economizer C10005
44. K Thermistor J20 1 2 Supply Air Temperature sa temp Al 10K Thermistor J2 1 2 Outdoor Air Temperature oa temp Al 10K Thermistor J2 3 4 Space Temperature Offset Pot stpt adj offset Al 100K Potentiometer J20 3 Safety Chain Feedback safety_status DI 24 VAC J1 9 Compressor Safety Status comp_status DI 24 VAC J1 2 Fire Shutdown Status firedown_status DI 24 VAC J1 10 Enthalpy Status enthalpy_status DI 24 VAC J2 6 Humidistat Input Status humstat_status DI 24 VAC J5 7 CONFIGURABLE INPUTS Indoor Air CO2 iaq Al 4 20 ma Outdoor Air CO2 oaq Al 4 20 ma J4 2 or J4 5 Space Relative Humidity Space rh Al 4 20 ma Supply Fan Status sfan status DI 24 VAC Filter Status filler status DI 24 VAC 5 1 or J5 3 or Door Contact Input door contact status DI 24 VAC J5 5 or J5 7 Occupancy Contact occ contact status DI 24 VAC OUTPUTS Economizer Output econ output AO 4 20ma J2 5 Supply Fan Relay State sfan 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 pexh DO Relay 24VAC 1A J11 3 Dehumidification Relay State dehum DO Relay 24VAC 1A J11 7 8 LEGEND Al Analog Input AO Analog Output DI Discrete Input DO Discrete Output These inputs if installed take the place of the
45. Optically isolated RS 485 repeaters are required every 1000 ft NOTE Carrier device default is 9600 band Communications 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 6 for recommended cable Table 6 Recommended Cables MANUFACTURER CABLE PART NO Alpha 2413 or 5463 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 100 foil shield and an outer jacket of PVC PVC nylon chrome vinyl or Teflon with a minimum operating temperature range of 20 C to 60 C is required Do not run communication wire in the same conduit as or next to any AC voltage wiring The RTU Open controller is an integrated component of the Carrier rooftop unit Its internal application programming provides optimum performance and energy efficiency RTU Open enables the unit to run in 100 stand alone control mode Carrier s I Vu Open network or a Third Party Building Automation System BAS On board DIP switches allow you to select your protocol and baud rate of choice among the four most popular protocols in use today BACnet Modbus Johnson N2 and LonWorks See Fig 65
46. TAT REMOTE OCCUPANCY G gt COMP SAFETY Y1 FIRE SHUTDOWN Y2 E SUPPLY FAN STATUS W1 NOT USED W2 ENTHALPY STATUS ENTH Z d CCN LEN NAVIGATOR PORT PORT Fig 44 PremierLink Controller CTB Field connections are made at a 16 pole terminal block TB3 located on the bottom shelf of the unit control box in front of the PremierLink controller The factory installed PremierLink control includes 6 supply air temperature SAT sensor The outdoor air temperature OAT sensor is included in the FIOP accessory EconoMi er 2 package See page 34 for accessory enthalpy controls 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 1 fo 5 lec FCB HI STATIC 81 OPTION C11189 ACCESSORY i PMR OFM EQUIP GR NOTE Refer to Form 33CS 67SI for complete PremierLink configuration operating sequences and troubleshooting information Have a copy of this manual available at uni
47. alent OUTDOOR AIR TEMPERATURE SENSOR Included CRTEMPSNO01A00 Included Not Used Included Not Used APPLICATION Differential Dry Bulb Temperature with PremierLink PremierLink requires 4 20 mA Actuator Single Enthalpy with PremierLink PremierLink requires 4 20mA Actuator Differential Enthalpy with PremierLink PremierLink requires 4 20mA Actuator NOTES CO Sensors Optional 33ZCSENCO2 Room sensor adjustable Aspirator box is required for duct mounting of the sensor 33ZCASPCO2 Aspirator box used for duct mounted CO room sensor 33ZCT55CO2 Space temperature and COs room sensor with override 33ZCT56CO2 Space temperature and COs room sensor with override and setpoint 25 Table 4 Space Sensor Mode a 7 FSD Analog 10k thermistor Discrete 24VAC OOP up Analog 0 go SPS o CMOS Output Discrete 6 Digital 5 DC Fire Shutdown Indoor Air Quality CO3 Outdoor Air Quality CO3 Relative Humidity Supply Fan Status FSD IAQ OAQ RH SFS CCN RED CON Gnd WAT AUX OUT Power Exhaust CON BLK Space Temperature Sensor Space Temperature Sensor Carrier Comfort Network communication bus Compressor Safety Dirty Filter Switch Table 5 Thermostat Mode TB3 TERMINAL FIELD CONNECTION INPUT SIGNAL Analog 10k thermistor LEGEND T55
48. ate Trap and Line for required trap dimensions INSTALLATION Jobsite Survey Complete the following checks before installation 1 Consult local building codes and the NEC National Electrical Code ANSI NFPA 70 for special installa tion requirements 2 Determine unit location from project plans or select unit location 3 Check for possible overhead obstructions which may interfere with unit lifting or rigging Step 1 Plan for Unit Location Select a location for the unit and its support system curb or other that provides for at least the minimum clearances required for safety This includes the clearance to combustible surfaces unit performance and service access below around and above unit as specified in unit drawings See Fig 2 NOTE Consider also the effect of adjacent units Unit may be installed directly on wood flooring or on Class A B or C roof covering material when roof curb is used Do not install unit in an indoor location Do not locate air inlets near exhaust vents relief valves or other sources of contaminated air 48TC 16 48TC 16 Step 3 Inspect Unit Inspect unit for transportation damage File any claim with transportation agency Confirm before installation of unit that voltage amperage and circuit protection requirements listed on unit data plate agree with power supply provided Step 4 Provide Unit Support Roof Curb Mount Accessory ro
49. ct the sensor to the control board terminals 48TC 16 48TC 16 MOUNTING HOLES WIRING OPENING sw2 mlel lala C11084 Fig 58 Space Relative Humidity Sensor Installation lo Vin Gnd Vo C11085 Fig 59 Space Relative Humidity Sensor Connection The power for the sensor is provided by the PremierLink control on terminal J5 4 33 to 35vdc To wire the sensor 1 At the sensor remove 4 inches of the jacket from the cable Strip 4 inch of insulation from each conduct or Route the cable through the wire clearance open ing in the center of the sensor See Fig 58 2 Connect a field supplied BLACK wire to the sensor screw terminal marked Vin 3 Connect a field supplied RED wire into the sensor screw terminal marked Io 4 Connect the field supplied RED wire from the sensor to TB3 13 5 Connect the field supplied BLACK wire from the sensor to TB3 7 Humidistat connections A humidistat can not be directly connected to the PremierLink controller Follow the instructions on pages 20 amp 21 to connect a humidistat or a thermostat as an electromechanical device 29 IAQ Sensor TB3 PL 13 s 1 5 8 E 24 VAC C10285 Fig 57 Outdoor CO Sensor Connections Space Relative Humidity Sensor or Humidistat Connections Space Relative Humidity Sensor connections The accessory space relative h
50. d Connect T 56 terminals to RTU Open 120 1 J20 2 and J20 3 per Fig 70 6 02 lt Jumper LETY C08461 Fig 70 RTU Open T 56 Sensor Connections 48TC 16 48TC 16 Space Relative Humidity Sensor or Humidistat Humidi MiZer Control Wiring In units equipped with the Humidi MiZer option there are two pink PNK wires loose in the control box used to control the dehumidification function of the unit These pink wires are meant to be tied to a space humidistat or thermidistat on an electromechanical unit On RTU Open equipped units these pink wires must be connected to J11 7 amp 8 to allow the Open board to operate the dehumidification function for the unit Disconnect the J11 Phoenix style connector from the board and use the plug screws to secure the pink wires in pins 7 and 8 reconnect the plug to the board at J11 Relative Humidity Sensors Space or Duct Mounted The accessory space humidity sensor 33ZCSENSRH 01 or duct humidity sensor 33ZCSENDRH 01 is used to measure the relative humidity of air within the space or return air duct The RH reading is used to control the Humidi MiZer option of the rooftop unit For wiring distances up to 500 ft 152 m use a 3 conductor 18 or 20 AWG shielded cable The shield must be removed from the sensor end of the cable and grounded at the unit end The current loop power for sensor is provided by the RTU Open controller as 24vdc Refer to the instructions supplied wit
51. duct opening Use the return duct cover removed from the end panel to cover the vertical return duct opening Field supplied flanges should be attached to horizontal duct openings and all ductwork should be secured to the flanges Insulate and weatherproof all external ductwork joints and roof or building openings with counter flashing and mastic in accordance with applicable codes Do not cover or obscure visibility to the unit s informative data plate when insulating horizontal ductwork REMOVABLE HORIZONTAL RETURN DUCT OPENING COVER REMOVABLE HORIZONTAL SUPPLY DUCT OPENING COVER C06108 Fig 8 Horizontal Conversion Panels Positioning on Curb For full perimeter curbs CRRFCURBO74A00 and 075A00 the clearance between the roof curb and the front and rear base rails should be 4 in 6 4 mm The clearance between the curb and the end base rails should be 1 2 in 13 mm For retrofit applications with curbs CRRFCURBO003A01 and 4A01 the unit should be position as shown in Fig 6 Maintain the 15 5 in 394 mm and 8 5 g in 220 mm clearances and allow the 225 16 in 567 mm dimension to float if necessary Ld loo 15 1 2 8 5 8 C10003 Fig 6 Retrofit Installation Dimensions If the alternative condensate drain location through the bottom of the unit is used in conjunction with a retrofit curb the hole in the curb must be moved 12 5 in 320 mm towards th
52. e duct end of the unit See Fig 7 New Position moved 12 5 in Original Position C10904 Fig 7 Alternative Condensate Drain Hole Positions Although unit is weatherproof guard against water from higher level runoff and overhangs IMPORTANT If the unit has the factory installed Thru the Base option make sure to complete installation of the option before placing the unit on the roof curb See the following sections Factory Option Thru Base Connections Gas Connection on page 11 Factory Option Thru Base Connections Electrical Connections on page 17 NOTE If gas and or electrical connections are not going to occur at this time tape or otherwise cover the fittings so that moisture does not get into the building or conduit in the interim 48TC 16 Step 8 Install Outside Air Hood Two Position Damper Hood Removal and Setup Economizer Hood Removal and Setup Factory Option Factory Option 1 The hood is shipped in knock down form and assembled to a metal support tray using plastic stretch wrap Located in the return air compartment the assembly s metal tray is attached to the basepan and also attached to the damper using two plastic 2 10 gain access to the hood remove the filter access tie wraps panel See Fig 9 1 The hood is shipped in knock down form and located in the return air compartment
53. e in the power exhaust hood assembly 1 The indoor coil access panel will be used as the top of the hood If the panel is still attached to the unit re move the screws along the sides and bottom of the panel See Fig 12 INDOOR N INDOOR ice EN DE SS ACCESS ACCE PANEL B PANEL C10007 Fig 12 Indoor Coil Access Panel Relocation 2 Swing out indoor coil access panel and insert the hood sides under the panel hood top Be careful not to lift the panel too far as it might fall out Use the screws provided to attach the hood sides to the hood top Use screws provided to attach the hood sides to the unit See Fig 13 TOP PANEL INDOOR COIL ACCESS PANEL HOOD DIVIDER C10008 Fig 13 Economizer Hood Construction 3 Remove the shipping tape holding the economizer barometric relief damper in place 4 Insert the hood divider between the hood sides See Figs 13 and 14 Secure hood divider with 3 screws on each hood side The hood divider is also used as the bottom filter rack for the aluminum filter 48TC 16 48TC 16 x 9 MINIMUM CLEARANCE FOR PANEL REMOVAL GAS FROM REGULATOR GAS MANUAL GAS METER SHUTOFF VALVE BASE UNIT e 95 48 MINIMUM DRIP LEG PER NFGC BASE RAIL E FIELD Eyed FABRICATED SUPPORT LEGEND NFGC National Fuel Gas Code Field supplied NOTE Follow all local codes SPACING
54. e 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 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 48 Outdoor Air Temperature OAT Sensor The OAT is factory mounted in the EconoMi er2 FIOP or accessory It is a nominal 10k ohm thermistor attached to an eyelet mounting ring Connect T 59 The T 59 space sensor requires a separate isolated power supply of 24 VAC See Fig 71 for internal connections at the T 59 Connect the SEN terminal BLU to RTU Open J20 1 Connect the COM terminal BRN to J20 2 Connect the SET terminal STO or BLK to J20 3 BLK STO 22 2 2 2 EN J20 3 I l I BRN COM SENSOR H 12202 WIRING I I BLU SPT I 3 J20 1 1 I SET SEN OPB COM PWR 0 010 Lr EE POWER 24 VAC WIRING NOTE Must use a separate isolated transformer C10291 Fig 71 Space Temperature Sensor Typical Wiring 83ZCT59SPT Indoor Air Quality CO sensor The indoor air quality sensor accessory monitors space carbon dioxide CO2 levels This information is used
55. e with applicable codes Ducts passing through unconditioned spaces must be insulated and covered with a vapor barrier If a plenum return is used on a vertical unit the return should be ducted through the roof deck to comply with applicable fire codes PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING UNIT ON ROOF CURB 914 1371 MAX WEIGHT UNIT LB KG 48TC 16 2130 968 NOTES 1 SPREADER BARS REQUIRED Top damage will occur if spreader bars are not used 2 Dimensions in are in millimeters 3 Hook rigging shackles through holes in base rail as shown in detail A Holes in base rails are centered around the unit center of gravity Use wooden top to prevent rigging straps from damaging unit Fig 5 Rigging Details 7 Remove all shipping materials and top skid Remove extra center post from the condenser end of the unit so that the condenser end of the unit matches Figs 26 and 27 Recycle or dispose of all shipping materials Step 7 Convert to Horizontal and Connect Ductwork when required Unit is shipped in the vertical duct configuration Unit without factory installed economizer or return air smoke detector option may be field converted to horizontal ducted configuration using accessory CRDUCTCVO001A00 To convert to horizontal configuration remove screws from side duct opening covers and remove covers Discard the supply duct cover Install accessory CRDUCTCV001A00 to cover the vertical supply
56. eads 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 the unit mounted non fused disconnect this will provide service power to the unit when the unit disconnect switch is open Other connection methods will result in the convenience outlet circuit being de energized when the unit disconnect switch is open See Fig 34 On a unit without a unit mounted disconnect connect the source leads to the main terminal block TB1 If the convenience outlet transformer is connected to the line side of a field disconnect the conduit provided with the unit must be used to protect the wire as they are routed from the transformer to the field disconnect The end of the conduit with the straight connector attaches to the field disconnect The other end does not need to connect to the transformer however the conduit must be routed so that all wiring is either in the conduit or behind the access panel If the convenience outlet transformer is connected to the line side of the factory disconnect option route the wires through the web bushing located on the bottom of the disconnect box For the load side wiring to the factory option disconnect route the wires through the hole on the right side of the disconnect Be sure to create a drip loop at least 6 long NOTICE AVIS Convenience
57. en 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 76 and 77 for protocol switch settings and address switches The 3rd party connection to the RTU Open is through plug J19 See Fig 78 for wiring NOTE Power must be cycled after changing the SW1 3 switch settings Refer to the RTU Open Controller Integration Guide Catalog No 11 808 428 01 for more detailed information on protocols 3rd party wiring and networking 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 SW3 Protocol Selection Select Baud Select Baud Comm Sef fo Option Set to MSTP 38 4k Unused Port master baud 71 OFF ON Protocol Selector DIP Switches Select Baud Select Baud C07166 C10816 Fig 78 Network Wiring 39 LonWorks NOTE DS Dip Switch BACnet MS TP SW3 example shown Baud Rate Selecti
58. ensors Each type has a variety of options consisting of timed override button set point adjustment a LCD screen and communication tie in Space temperature can be also be written to from a building network or zoning system However it is still recommended that return air duct sensor be installed to allow stand alone operation for back up Refer to the configuration section for details on controller configurations associated with space sensors Field connections to T 55 T 56 and T 59 are provided as examples e 33ZCTSSSPT space temperature sensor with override button T 55 33ZCT56SPT space temperature sensor with override button and setpoint adjustment T 56 e 33ZCTS9SPT space temperature sensor with LCD liquid crystal display screen override button and setpoint adjustment T 59 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 See Fig 49 for typical T 55 internal connections Connect the T 55 SEN terminals to RTU Open J20 1 and J20 2 See Fig 69 C08460 Fig 69 RTU Open T 55 Sensor Connections Connect T 56 See Fig 51 for T 56 internal connections Install a jumper between SEN and SET terminals as illustrate
59. es greater than 0 5 psig 3450 Pa will cause gas valve damage resulting in hazardous condition If gas valve is subjected to pressure greater than 0 5 psig 3450 Pa it must be replaced before use When pressure testing field supplied gas piping at pressures of 0 5 psig 3450 Pa or less a unit connected to such piping must be isolated by closing the manual gas valve A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death Before performing service or maintenance operations on unit always turn off main power switch to unit and install lock s and lockout tag s Unit may have more than one power switch A 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 22 systems Do not use R 22 service equipment or components on Puron refrigerant equipment A WARNING PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure to follow this warning could cause personal injury or death Relieve pressure and recover all refrigerant before system repair or final unit disposal Wear safety glasses and gloves when handling refrigerants Keep torches and other ignition sources away from refrigerants and oils AA CAUTION CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edge
60. following 1 Use a 2 conductor 18 or 20 AWG twisted pair cable to connect the return air enthalpy sensor to the en thalpy controller 2 Connect the field supplied RED wire to spade con nector on the return air enthalpy sensor and the ter minal on the enthalpy controller Connect the BLK wire to spade connector on the return air enthalpy sensor and the terminal on the enthalpy controller Smoke Detectors Smoke detectors are available as factory installed options on 48TC 16 units 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 Units equipped with factory optional Return Air smoke detectors require a relocation of the sensor module at unit installation See Completing Installation of Return Air Smoke Sensor on page 37 for details 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 th
61. h the RH sensor for the electrical requirements and terminal locations RTU Open configurations must be changed after adding an RH sensor See Fig 74 and 75 for typical RH sensor wiring J4 1 or J4 4 24vdc loop power J4 2 or J4 5 4 20mA signal input NOTE The factory default for dehumidification control is normally open humidistat MOUNTING HOLES ejeje lo Vin Gnd Vo WIRING OPENING Vin J4 1 or J4 4 6 lo J4 2 or J4 5 20mA output C11087 Fig 74 Space Relative Humidity Sensor Typical Wiring 37 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 54 Connect the 4 20 mA terminal to RTU Open J4 2 and connect the SIG COM terminal to RTU Open J4 3 See Fig 72 IAQ Sensor 1 1201 J4 2 SIG COM COM 4 3 24 VAC C10738 Fig 72 RTU Open Indoor CO Sensor 33ZCSENCO2 Connections Outdoor Air Quality Sensor PNO 33ZCSENCO2 plus weatherproof enclosure The outdoor air CO sensor is designed to monitor carbon dioxide CO
62. he 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 er2 FIOP or accessory It is a nominal 10k ohm thermistor attached to an eyelet mounting ring EconoMi er2 The PremierLink control is used with 2 option or accessory for outdoor air management The damper position is controlled directly by the PremierLink control EconoMi er2 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 3 for accessory part numbers Field Connections Field connections for accessory sensor and input devices are made at the 16 pole terminal block TB3 located beneath the PremierLink control see Fig 46 Some input devices also require a 24 vac signal source connect at CTB terminal R 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 Route wires to control box as indicated in Fig 39 Table 4 provides a summary of field connections for units equipped with Space Sensor Table 5 provides a summary of field connections for units equipped with Space T
63. hermostat Supply Air Temperature SAT Sensor On FIOP equipped 48TC 16 units 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 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 5 in hole in the flange or duct Use the template provided in the unit control box Use two field supplied self drilling screws to secure the sensor probe in a horizontal orientation See Fig 48 SUPPLY AIR 7 N TEMPERATURE 7 gt CURB SENSOR 44 SUPPLY AIR RETURN AIR LA JA KE Fig 48 Typical Mounting Location for Supply Air Temperature SAT Sensor on Small Rooftop Units 7 NOTE Refer to Form 33CS 67SI or latest for complete PremierLink configuration operating sequences and troubleshooting information Have a copy of this manual available at unit set up Table 3 PremierLink Sensor Usage RETURN AIR ENTHALPY SENSOR Requires 33CSENTSEN or equivalent OUTDOOR AIR ENTHALPY SENSOR Requires 33CSENTHSW Requires 33CSENTHSW or equivalent RETURN AIR TEMPERATURE SENSOR Required 33ZCT55SPT or equiv
64. ional Drawing 16 Size Unit 3 STD UNIT CORNER CORNER CORNER CORNER C6 UNIT WEIGHT WEIGHT A WEIGHT B WEIGHT C WEIGHT D id LBS KG LBS KG LBS KG LBS KG LBS KG X Y 1 481067016 1380 627 295 134 276 126 342 156 1 191 64 1 4 1630 35 890 21 1 8 537 STANDARD UNIT WEIGHT IS WITH LOW HEAT WITHOUT PACKAGING FOR OPTIONS amp ACCESSORIES REFER TO THE PRODUCT DATA CATALOG CORNER A CORNER B Y CORNER D CORNER C C10862A CH TOP FRONT Fig 1 Unit Dimensional Drawing 16 Size Unit cont Required bottom condensate drain connection Otherwise 36 914mm for condensate connection C09897 Fig 2 Service Clearance Dimensional Drawing Although unit is weatherproof avoid locations that permit water from higher level runoff and overhangs to fall onto the unit Select a unit mounting system that provides adequate height to allow for removal and disposal of frost and ice that will form during the heating defrost mode as well as allow installation of condensate trap per requirements Refer to Step 11 Install External Condens
65. ire tie and up to the web bushing near the control box 3 Feed the cable through the bushing and into the bottom left side of the control box after removing one of the two knockouts in the corner of the box Use a connector to protect the cable as it enters the control box 4 Use the connector and the wire tie to reduce any slack in the humidistat cable to ensure that it will not be damaged by contact with the condenser coil see Fig 39 5 Use wire nuts to connect humidistat cable to two PINK leads in the low voltage wiring as shown in Fig 42 To connect the Thermidistat device 33CS2PPRH 01 1 Route the Thermidistat multi conductor thermostat cable field supplied through the bushing the unit s louvered end panel see Fig 39 2 Route the cable through the snap in wire tie and up to the web bushing near the control box 3 Feed the cable through the bushing and into the bottom left side of the control box after removing one of the two knockouts in the corner of the box Use a connector to protect the cable as it enters the control box 4 Use the connector and the wire tie to reduce any slack in the thermostat cable to ensure that it will not be damaged by contact with the condenser coil see Fig 39 5 The Thermidistat has dry contacts at terminals D1 and D2 for dehumidification operation see Fig 43 The dry contacts must be wired between CTB terminal R and the PINK lead to the LTLO switch with field supplied
66. level concrete slab that extends a minimum of 6 in 150 mm beyond unit cabinet Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow NOTE Horizontal units may be installed on a roof curb if required Alternate Unit Support In Lieu of Curb or Slab Mount A non combustible sleeper rail can be used in the unit curb support area If sleeper rails cannot be used support the long sides of the unit with a minimum of 3 equally spaced 4 in x 4 in 102 mm x 102 mm pads on each side 5 Roof Mount Check building codes for weight distribution requirements Unit operating weight is shown in Table 1 Table 1 Operating Weights 48TC 16 COMPONENT UNITS LB KG 1390 627 Economizer Vertical Horizontal Humid MiZer System 62 28 Powered Outlet 32 15 Curb 14 in 356 mm 180 82 24 in 610 mm 235 107 Step 2 Plan for Sequence of Unit Installation The support method used for this unit will dictate different sequences for the steps of unit installation For example on curb mounted units some accessories must be installed on the unit before the unit is placed on the curb Review the following for recommended sequences for installation steps Curb mounted installation Install curb making sure to position the common cross rail see Fig 3 for large duct opening Install field fabricated ductwork inside curb Complete installation of the
67. midistat is a dedicated input on the configurable input 9 and tells the RTU Open when the RH level is HIGH or LOW The normal condition for humidity is LOW A normally open humidistat is the factory default control for the Humidi MiZer option To wire in the field e J5 8 24 VAC source for dry contact 15 7 Signal input Smoke Detector Fire Shutdown FSD On 48TC 16 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 CTB input The FSD function is initiated via the smoke detector s Alarm NO contact set The RTU Open controller communicates the smoke detector s tripped status to the BAS building control See Fig 67 the RTU Open System Control Wiring Diagram The Fire Shutdown Switch configuration MENU Config Inputs input 5 identifies the normally open status of this input when there is no fire alarm 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 65 and Fig 67 or Fig 68 for wire terminations at J5 48TC 16 48TC 16 The RTU Op
68. n N O or normally closed N C Input 8 or 9 is recommended for easy of installation Refer to Fig 65 and Fig 67 or Fig 68 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 65 and Table 8 for wire terminations at J5 Power Exhaust output The relay used by the RTU Open board to control power exhaust is a dry contact which means it does not have 24vac This 24vac must be connected to the relay to allow it to operate the power exhaust relay in the PE accessory A 24vac source must be provided to J11 2 on the RTU Open control board This can be provided by the unit s transformer from various sources The R terminal on the unit s low voltage terminal board LVTB is a logical source Refer to Fig 65 and Fig 67 or Fig 68 for wire terminations at J11 38 Humidistat The accessory humidistat provides the RTU Open insight to the relative humidity in the space The humidistat reads the RH level in the space and compares it to its setpoint to operate a dry contact The hu
69. ncy must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow all safety codes Wear safety glasses and work gloves Use quenching cloths for brazing operations and have a fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions attached to the unit Consult local building codes and appropriate national electrical codes in USA ANSI NFPA70 National Electrical Code NEC in Canada CSA C22 1 for special requirements It is important to recognize safety information This is the safety alert symbol 4 When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING CAUTION and NOTE 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 hazards 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 48TC 16 5 3 4 lt 11461 RETUR 26 Am 1660 41 1 2 gt 1055 SUPPLY AIR 44 3 8 11 4 1 8 pag UU 6 1 4 1591
70. ng 9 229mm min Burner 0 Access gt ZR Panel C07470 C10826 Fig 22 Gas Piping Thru Base Connections 12 NOTE If gas and or electrical connections are not going to occur at this time tape or otherwise cover the fittings so that moisture does not get into the building or conduit in the a CONNECTOR PLATE ASSEMBLY GASKET C10906 Fig 18 Completing Installation of Thru the Base Option The thru base gas connector has male and female threads The male threads protrude above the basepan of the unit the female threads protrude below the basepan Check tightness of connector lock nuts before connecting gas piping Install a 3 4 in NPT street elbow field supplied on the thru base gas fitting Attach a 4 in pipe nipple with minimum length of 16 in 406 mm field supplied to the street elbow and extend it through the access panel at the See Fig 19 3 4 in NPT GAS THRU BASE STREET SUPPORT GAS FITTING ELBOW BRACKET C10806 Fig 19 Gas Line Piping Other hardware required to complete the installation of the gas supply line will include a manual shutoff valve a sediment trap drip leg and a ground joint union A pressure regulator valve may also be required to convert gas pressure from pounds to inches of pressure The manual shutoff valve must be located within 6 ft 1 83 m of the unit The union located in the final leg entering the unit must be located at least 9
71. ntire instruction manual before starting the installation TABLE OF CONTENTS SAFETY CONSIDERATIONS INSTALLATION Jobsite Survey Step 1 Plan for Unit Location Roof Mount Step 2 Plan for Sequence of Unit Installation Curb Mount Installation Pad Mount Installation Frame Mount Installation Step 3 Inspect Un Step 4 Provide Unit Support Roof Curb Mount Slab Mount Horizontal Units Only Alternate Unit Support In Lieu of Curb or Slab Mount Step 5 Field Fabricate Ductwork Step 6 Rig and Place Unit Positioning on Curb Step 7 Convert to Horizontal and Connect Ductwork 8 Step 8 Install Outside Air Hood Economizer Hood Removal and Setup Factory Option Two Position Damper Hood Removal and Setup Factory Option Economizer Hood and Two Position Hood Step 9 Install Flue Hood Step 10 Install Gas Piping Factory Option Thru Base Connections Gas Connections Step 11 Install External Condensate Trap and Line Step 12 Make Electrical Connections Field Power Supply All Units Units without Factory Installed Disconnect A WARNING FIRE EXPLOSION HAZARD Failure to follow this warning could result in personal injury or death Disconnect gas piping from unit when leak testing at pressure greater than 0 5 psig 3450 Pa Pressur
72. ntrol as described above Add and install a return air enthalpy sensor Return Air Enthalpy Sensor Mount the return air enthalpy sensor 33CSENTSEN in the return air section of the economizer The return air sensor is wired to the enthalpy controller 33CSENTHSW See Fig 80 RED PL6 1 24 V BLK PL6 4 COM 7 CTB ECON GRA 7 P LINK to J4 2 or RTU Open to J2 6 Outside Air Enthalpy Switch 24 36 Return Air VDC In Enthalpy 4 20 Main Sensor Out C11161 Fig 80 Outside and Return Air Enthalpy Sensor Wiring 41 2 flashes per second 2 flashes per second 2 flashes per second 2 flashes per second 5 flashes per second 5 flashes per second 7 flashes per second 14 flashes per second NOTE Refer to Catalog No 48 50HCTOQ O1T for complete configuration of RTU Open operating sequences and troubleshooting information Refer to RTU Open Controller Integration Guide Catalog No 11 808 428 01 for details on configuration and troubleshooting of connected networks Have a copy of these manuals available at unit start up Outdoor Air Enthalpy Control PNO 33CSENTHSW The enthalpy control 33CSENTHSW 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 33CSENTSEN is required for differential enthalpy control See Fig
73. o the gas valve The supply piping must be disconnected from the gas valve during the testing of the piping systems when test pressure is in excess of 0 5 psig 3450 Pa Pressure test the gas supply piping system at pressures equal to or less than 0 5 psig 3450 Pa The unit heating section must be isolated from the gas piping system by closing the external main manual shutoff valve and slightly opening the ground joint union Check for gas leaks at the field installed and factory installed gas lines after all piping connections have been completed Use soap and water solution or method specified by local codes and or regulations A WARNING FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in personal injury death and or property damage Connect gas pipe to unit using a backup wrench to avoid damaging gas controls Never purge a gas line into a combustion chamber Never test for gas leaks with an open flame Use a commercially available soap solution made specifically for the detection of leaks to check all connections Use proper length of pipe to avoid stress on gas control manifold i TIT 17 C10884 Fig 26 Conduit into Factory Option Disconnect
74. of curb details and dimensions are shown in Fig 3 Assemble and install accessory roof curb in accordance with instructions shipped with the curb NOTE The gasketing of the unit to the roof curb is critical for a watertight seal Install gasket supplied with the roof curb as shown in Fig 3 Improperly applied gasket can also result in air leaks and poor unit performance Curb should be level This is necessary for unit drain to function properly Unit leveling tolerances are show in Fig 4 Refer to Accessory Roof Curb Installation Instructions for additional information as required Install insulation cant strips roofing felt and counter flashing as shown Ductwork must be attached to curb and not to the unit IMPORTANT If the unit s gas connection and or electric and control wiring is to be routed through the basepan and the unit is equipped with the factory installed Thru the Base service option see the following sections Factory Option Thru Base Connections Gas Connection on page 11 Factory Option Thru Base Connections Electrical Connections on page 17 If using the field installed Thru the Base accessory follow the instructions provided with the accessory kit NOTE If gas and or electrical connections are not going to occur at this time tape or otherwise cover the fittings so that moisture does not get into the building or conduit in the interim Slab Mount Horizontal Units Only Provide a
75. onnection points off the optional disconnect switch These leads are for factory run test purposes only remove and discard before connecting field power wires to unit connection points Make field power connections directly to line connection pressure lugs only A WARNING FIRE HAZARD to follow this warning could result in Failure intermittent operation or performance satisfaction Do not connect aluminum wire between disconnect switch and unit Use only copper wire See Fig 30 ELECTRIC DISCONNECT SWITCH COPPER WIRE ONLY A93033 Fig 30 Disconnect Switch and Unit 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 and conduit requirements 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 option 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 panel beneath the control box See Fig 32 The primary l
76. ons SW2 Fig 77 RTU Open Address Switches SW1 C10815 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 Open board The link cable connects a USB port to the J12 local access port This program functions and operates identically to the handheld RTU Open 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 See Table 9 MSB LSB 1 af can le mate OG OS te Swi i 5W3 O o Protocol Selector P5 P5 BACview Local Access Cable C10812 Local Access BACview Handheld The BACview is a keypad display interface used to connect to the RTU Open to access the control information read sensor values and test the RTU see Fig 79 This is an accessory interface that does not come with the RTU Open controller and can only be used at the unit Connect the BACview to the RTU Open 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 idle See Form 48 SOHCTQ O1T Appendix
77. ormation on configuring the PremierLink control for Door Switch timer function Power Exhaust output Connect the accessory Power Exhaust contactor coils s per Fig 63 Power Exhaust TB3 PL 62 68 CTB THERMOSTAT TAN c C10289 Fig 63 PremierLink Power Exhaust Output Connection 30 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 48TC 16 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 CTB 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 46 the PremierLink wiring schematic 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 Connect one side of the switch s NO contact set
78. ouvered hail guard Phase monitor control Refer to separate installation instructions for information on installing these accessories Pre Start and Start Up This completes the mechanical installation of the unit Refer to the unit s Service Manual for detailed Pre Start and Start up instructions 46 Step 13 Adjust Factory Installed Options Smoke Detectors Smoke detector s will be connected at the Central Terminal Board CTB at terminals marked Smoke Shutdown Remove jumper JMP 3 when ready to energize unit EconoMi er IV Occupancy Switch Refer to Fig 87 for general EconoMi er IV wiring External occupancy control is managed through a connection on the Central Terminal Board If external occupancy control is desired connect a time clock or remotely controlled switch closed for Occupied open for Unoccupied sequence at terminals marked OCCUPANCY on CTB Remove or cut jumper JMP 2 to complete the installation Step 14 Install Accessories Available accessories include Roof Curb must be installed before unit Thru base connection kit must be installed before unit is set on curb Manual outside air damper Two Position motorized outside air damper EconoMi er IV with control and integrated barometric relief EconoMi er2 without control for external signal and integrated barometric relief 48TC 16
79. personal injury or death Using unit mounted convenience outlets Units with unit mounded 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 Check tightness of connector lock nuts before connecting electrical conduits Field supplied and field installed liquid tight conduit connectors and conduit may be attached to the connectors on the basepan Pull correctly rated high voltage and low voltage through appropriate conduits Connect the power conduit to the internal disconnect if unit is so equipped or to the external disconnect through unit side panel A hole must be field cut in the main control box bottom on the left side so the 24 v control connections can be made Connect the control power conduit to the unit control box at this hole Units without Thru Base Connections 1 Install power wiring conduit through side panel open ings Install conduit between disconnect and control box 2 Install power lines to terminal connections as shown in Fig 31 Field Control Wiring The 48TC 16 requires an external temperature control device This device can be a thermostat field supplied or a P
80. r conduit in the interim P di Ps oM e s E Fig 37 Completing Installation of Thru the Base Option CONNECTOR 48TC 16 48TC 16 Unit without Thru Base Connection Kit Pass the thermostat control wires through the bushing on the unit end panel Route the wire through the snap in wire tie and up to the web bushing near the control box Route the wire through the bushing and into the bottom left side of the control box after removing one of the two knockouts in the comer of the box Use a connector at the control box to protect the wire as it passes into the control box Pull the wires over to the terminal strip at the upper left corner of the Central Terminal Board CTB Use the connector at the control box and the wire tie to take up any slack in the thermostat wire to ensure that it will not be damaged by contact with the condenser coil See Fig 39 NOTE If thru the bottom connections accessory is used refer to the accessory installation instructions for information on routing power and control wiring Thermostat Wire C10886 Fig 39 Thermostat Wire Routing Heat Anticipator Settings Set heat anticipator settings at 0 14 amp for the first stage and 0 14 amp for second stage heating when available 19 Central Terminal Board AEA 0 2 2 51 W2 W
81. remierLink controller available as factory installed option or as field installed accessory for use on a Carrier Comfort Network or as a stand alone control or the RTU Open Controller for Building Management Systems using non CCN protocols RTU Open is available as a factory installed option only Thermostat Install a Carrier approved accessory 2 stage Cooling Heating thermostat according to installation instructions included with the accessory If using an electronic thermostat configure it for non heat pump operation Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in accordance with the thermostat installation instructions If the thermostat contains a logic circuit requiring 24 v power use a thermostat cable or equivalent single leads of different colors with minimum of seven leads If the thermostat does not require a 24 v source no C connection required use a thermostat cable or equivalent with minimum of six leads Check the thermostat installation instructions for additional features which might require additional conductors in the cable For wire runs up to 50 ft 15 m use no 18 AWG American Wire Gage insulated wire 35 C minimum For 50 to 75 ft 15 to 23 m use no 16 AWG insulated wire 35 C minimum For over 75 ft 23 m use no 14 AWG insulated wire 35 C minimum All wire sizes larger than no 18 AWG cannot be directly connected to the
82. roughout the building It is not to be used as a life saving device Controller The controller see Fig 81 includes a controller housing a printed circuit board and a clear plastic cover 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 all located on the cover face Sensor Module The sensor module see Fig 82 includes a plastic housing a printed circuit board a clear plastic cover a sampling tube inlet and an exhaust tube 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 for Power Trouble Alarm and Dirty and a manual test reset button on the left side of the housing 48TC 16 Return Air without Economizer The sampling tube is located across the return air opening on the unit basepan See Fig 86 The holes in the
83. s or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling parts and servicing air conditioning equipment Outdoor Air Quality Sensor 37 Space Relative Humidity Senor or Humidistat 37 Smoke Detector Fire Shutdown FSD 38 Connecting Discrete Inputs 38 Communication Wiring Protocols 39 General ize sa RI eir S 39 Local Access vec ri tk Aa 40 RTU Open Troubleshooting 40 Outdoor Air Enthalpy Control 41 Differential Enthalpy Control 41 Return Air Enthalpy Sensor 41 Smoke Detectors RARE A 42 bu Fuad Seay 42 Controller ee cin RE ia wah 42 Sensor Module 0 0 0 0 eee eee eee 42 Smoke Detector Locations 43 SUPPLY All sted or woh eee sce E 43 Return Air without Economizer 43 Return Air with Economizer 43 Step 13 Adjust Factory Installed Options 46 Step 14 Install Accessories 46 SAFETY CONSIDERATIONS Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or age
84. 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 Completing Installation of Return Air Smoke Sensor for details 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 84 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 the following installation procedure 48TC 16 Flexible Exhaust Tube Return Air Sampling Tube C10330 Fig 84 Return Air Sampling Tube Location 43 Air is introduced 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
85. stp Ham COMPRESSOR CONDENSER CONDENSATE 11721 ACCESS COIL DRAIN xp PANEL E zl INDOOR COIL i CS pin c Eu ACCESS PANEL 14 5 8 8061 373 SUPPLY AIR SC HORIZONTAL t S 3 3 p ue 00 1 Oof Lan lus Va 1671 115 11541 goe 1541 44 Me PRESSURE GAUGE MANIFOLD BACK L10561 BAROMETRIC POWER ACCESS 7 SUPPLY RETURN RELIEF EXHAUST AIR 1 AIR t FLOW RIGH Vertical Connections Economizer 81 1 4 32 3 4 S 12064 9 1832 51 HORIZONTAL ECONOMI ZER HOOD OPTIONAL 51 1 8 d 11298 46 1 16 11179 SUPPLY RETURN MR AIR Horizontal Connections Economizer THRU THE BASE CHART THESE HOLES REQUIRED FOR USE CRBTMPWRO05A00 006A00 001A00 SONNEGTIONUS AES ACCESSORY THREADED WIRE REO HOLE B 2 1 2 64 DIA POWER SUPPLY HOLE NO CONDUIT SIZE USE SIZES MAX D 7 8 t221 DIA FIELD CONTROL WIRING HOLE Li ira ACC 1 8 122 21 m 1 12 24V 118 122 21 E 3747 14 NPT CONDENSATE DRAIN T Di FORERO DT 1727 38 11 F 7 8 221 DIA FIELD CONVENIENCE OUTLET HOLE 1 374 PIPE GAS 13 47 144 51 12 ACC 718 1 006 D TIR 24V 1 8 1 Y 1127 POWER 2 150 81 1 374 PIPE GAS 13 4 51 172 ACC 118 122 21 m 1 1 27 24V 1 87 122 2 Y 2 POWER 2 1 2 63 51 H 3 4 PIPE GAS 1 3 4 1 FOR THRU THE BASEPAN FACTORY OPTION FITTINGS FOR X amp Y ARE PROVIDED AS SPECIFIED ON 006 Fig 1 Unit Dimens
86. t start up The PremierLink controller see Fig 44 is compatible with Carrier Comfort Network CCN devices 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 48TC 16 unit s main control box to the left of the Central Terminal Board CTB see Fig 45 Factory wiring is completed through harnesses connected to the cors PREMIERLINK FIOP ACCESSORY CCHRI DDC CENTRAL E GI 51 ET 3 AM TERMINAL BOARD T83 A 16 12 181 8 ACCY ACCESSORY p ACCESSORY tius 2 WINTER a fe ISTART GUARD CAP CAP2 CCHR2 ACCESSORY ACCESSORY WINTER 1 1 17 START TB2 Fig 45 48HC 14 Control Box Component Locations PremierLink Controller Location 22 48TC 16
87. to CTB s THERMOSTAT R terminal Connect the other side of the NO contact set to TB3 10 Setpoint for Dirty Filter is set at the switch See Fig 60 Filter Switch NO close on rising pressure high drop CTB Thermostat R TB3 PL ponerte Qu C10286 Fig 60 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 Form 33CS 67SI 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 48TC 16 48TC 16 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 onl
88. ttom connection use a 1 2 in square socket drive extension and install it in the side drain connection 13 When installing the gas supply line observe local codes pertaining to gas pipe installations Refer to the NFPA 54 ANSI Z223 1 NFGC latest edition in Canada CAN CSA B149 1 In the absence of local building codes adhere to the following pertinent recommendations 1 Avoid low spots in long runs of pipe Grade all pipe 1 4 in in every 15 ft 7 mm in every 5 m to prevent traps Grade all horizontal runs downward to risers Use risers to connect to heating section and to meter 2 Protect all segments of piping system against physical and thermal damage Support all piping with appro priate straps hangers etc Use a minimum of one hanger every 8 ft 2 4 m For pipe sizes larger than 3 4 in follow recommendations of national codes 3 Apply joint compound pipe dope sparingly and only to male threads of joint when making pipe connec tions Use only pipe dope that is resistant to action of liquefied petroleum gases as specified by local and or national codes If using PTFE Teflon tape ensure the material is Double Density type and is labeled for use on gas lines Apply tape per manufacturer s in structions 4 Pressure test all gas piping in accordance with local and national plumbing and gas codes before connect ing piping to unit NOTE Pressure test the gas supply system after the gas supply piping is connected t
89. umidity sensor 33ZCSENSRH 01 is installed on an interior wall to measure the relative humidity of the air within the occupied space The use of a standard 2 X 4 inch electrical box to accommodate the wiring is recommended for installation The sensor can be mounted directly on the wall if acceptable by local codes CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in permanent damage to the sensor DO NOT clean or touch the sensing element with chemical solvents as they can permanently damage the Sensor CAUTION UNIT PERFORMANCE HAZARD Failure to follow this caution will result in inaccurate sensor readings DO NOT mount the sensor in drafty areas such as near heating or air conditioning ducts open windows fans or over heat sources such as baseboard heaters radiators or wall mounted dimmers Sensors mounted in those areas will produce inaccurate readings If the sensor is installed directly on a wall service install the humidity sensor using 2 screws and 2 hollow wall anchors field supplied Do not over tighten screws See Fig 58 The sensor must be mounted vertically on the wall The Carrier logo should be orientated correctly when the sensor is properly mounted Avoid corner locations Allow at least 4 ft between the sensor and any corner Airflow near corners tends to be reduced resulting in erratic sensor readings The sensor should be vertically mounted approximately 5 ft up from
90. urn Air Sensor detector plate See Fig 85 Save the screws 2 Remove the Return Air Sensor and its detector plate 3 Rotate the detector plate so the sensor is facing out wards and the sampling tube connection is on the bot tom See Fig 86 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 ex haust tube is on the top See Fig 86 Ln Connect the flexible tube on the sampling inlet to the sampling tube on the basepan Controller Te uus Sampling Tube o C10332 E Fig 86 Return Air Sensor Operating Position Flexible Exhaust Additional Application Data Tubes Refer to Catalog No HKRNKA 1XA for discussions on additional control features of these smoke detectors including multiple unit coordination Sampling Tube C10331 Fig 85 Return Air Detector Shipping Position 44 Table 10 Unit Wire Fuse or HACR Breaker Sizing Data COMBUSTION POWER FAN MOTOR EXHAUST NO C O or UNPWR C O NOM IFM V Ph Hz TYPE Nome DISC SIZE DISC SIZE FOR MCA MCA 68 3 71 396 72 1 76 400 70 8 74 413 74 6 79 417 STD 208 230 3 60 MED 0 48 STD 34 35 234 358 37 236 460 3 60 MED 0 25 35 0 37 243 368 39 245 HIGH 40 8 43 252 426 45 STD 26 5 28 184 303 32 575 3 60 MED 0 24 3 26 5 28 184 303 32 COMBUSTION POWER FAN MOTOR EXHAUST w PWRD C O NOM IFM V Ph H
91. wire nuts Refer to the installation instructions included with the Carrier Edge Thermidistat device Form 33CS 65SI or latest for more information 48TC 16 ha mg 50TM501304 A RED rE CD 2 3 2 wes R power Ey SCHEMATIC JOR OS 6 oi m 1 accessory Power RETURN n e y PPLY 2 a Stowe no ol 5 SENSOR y Dry IPM OL TROUBLE HPN o40 RED NC T ini a pn am Sp Deg RED 1 0 Don 1 ac SMOKE CONTROL Rove DI 0 ln Cord HI TRAM J FOP ACCESSORY rx gt connor DARI CAE Qi sm BRN 5 RRE gt Do a ah DI dk FROM POWER EL SCHEMATIC DIE Beet d suit D 3 Con P1213 BRN o rs FIOPIACEY 1 EOD 13 LGD o GRA 07 RN RED eam can ae I uk E OR FIELD USE 20 a x 60 5 aen D 5 Ife on Cors uro on Na ORNL 8 Greet Vio viO ORK Hs 0C2 m od pne BRN ur mie om tas vio re CENTRAL TERMINAL BOARD SEE NOTE
92. with local building codes and with applicable national codes In U S A refer to NFPA 54 ANSI Z223 1 National Fuel Gas Code NFGC In Canada installation must be accordance with the CAN CSA B149 1 and CAN CSA B149 2 installation codes for gas burning appliances This unit is factory equipped for use with Natural Gas fuel at elevations up to 2000 ft 610 m above sea level Unit may be field converted for operation at elevations above 2000 ft 610 m and or for use with liquefied petroleum fuel See accessory kit installation instructions regarding these accessories NOTE In U S A the input rating for altitudes above 2000 ft 610 m must be derated by 4 for each 1000 ft 305 m above sea level In Canada the input rating must be derated by 10 for altitudes of 2000 ft 610 m to 4500 ft 1372 m above sea level For natural gas applications gas pressure at unit gas connection must not be less than 5 in wg 1250 Pa or greater than 13 in wg 3240 Pa while the unit is operating For liquified petroleum applications the gas pressure must not be less than 11 in wg 2740 Pa or greater than 13 in wg 3240 Pa at the unit connection The gas supply pipe enters the unit at the burner access panel on the front side of the unit through the long slot at the bottom of the access panel The gas connection to the unit is made to the 3 4 in FPT gas inlet port on the unit gas valve Table 2 Natural Gas Supply Line Pressure Ranges UNT
93. y 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 7 for the recommended color code Table 7 Color Code Recommendations CCN BUS WIRE CCN PLUG PIN SIGNAL TYPE COLOR NUMBER E ee MEN x B 3 Connect the CCN lead typically RED to the unit s TB3 12 terminal Connect the CCN ground lead typically WHT to the unit s TB3 14 terminal Connect the CCN lead typically BLK to the unit s TB3 16 terminal See Fig 64 CCN Bus C10290 Fig 64 PremierLink CCN Bus Connections 31 CCN Communication Bus The PremierLink controller 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
94. y the occupants CCN COM SENSOR WIRING C08201 Fig 49 T 55 Space Temperature Sensor Wiring Connect T 55 See Fig 49 for typical T 55 internal connections Connect the T 55 SEN terminals to TB3 terminals 1 and 3 see Fig 50 TB3 PL C10023 Fig 50 PremierLink T 55 Sensor Connect T 56 See Fig 51 for T 56 internal connections Install a jumper between SEN and SET terminals as illustrated Connect T 56 terminals to TB3 terminals 1 3 and 5 see Fig 52 CCN COM SENSOR WIRING JUMPER TERMINALS AS SHOWN C08202 Fig 51 T 56 Internal Connections To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the sensor See Fig 54 Connect the 4 20 mA terminal to terminal TB3 9 and connect the SIG COM terminal to terminal TB3 11 See Fig 55 IAQ Sensor TB3 PL SEN 9 lt J5 5 TB3 JU 6 e 24 VAC C10284 Fig 55 Indoor CO Sensor 33ZCSENCO2 Connections Refer to Form 33CS 67SI PremierLink Installation
95. z TYPE wong TIRE pura luni DISC SIZE EEA FEA MCA MCA LRA 24 3 8 1 8 8 48TC D16 UNIT 48TC 16 STD HIGH STD 36 2 ME STD 37 2 43 0 73 1 75 6 86 0 460 3 0 28 2 575 3 60 ME 0 3 28 2 EC OEE Legend and Notes for Table 10 D D D 3 8 1 8 8 48TC D16 UNIT LEGEND Example Supply voltage is 230 3 60 BRKR Circuit breaker SC poe CO Convenience outlet AB 224 v DISC Disconnect US H BC 231 v FLA Fullload amps AC 226 v IFM Indoor fan motor LRA Locked rotor amps 224 231 226 681 MCA Minimum circuit amps Average Voltage 3 3 PE Power exhaust PWRD CO Powered convenient outlet 227 UNPWR CO Unpowered convenient outlet Determine maximum deviation from average voltage AB 227 224 BC 231 227 4v NOTES 1 In compliance with NEC requirements for multimotor and combination load equipment refer to NEC Articles 430 and 440 the overcurrent protective device for the unit shall be AC 227 226 1 fuse or HACR breaker Canadian units may be fuse or circuit Maximum deviation is 4 v breaker Determine percent of voltage imbalance 2 Unbalanced 3 Phase Supply Voltage 4 Never operate a motor where a phase imbalance in supply Voltage Imbalance 100 x Se voltage is greater than 2 Use the following formula to de termine the percentage of voltage imbalance 1 76 max voltage deviation from average voltage This amount

Carrier 48TC**16 Air Conditioner User Manual

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