Installation Manual
Contents
1. 10 Step 13 Pumpdown amp Evacuation eese hh rh eee eee re err eerte 13 MAJOR CONIPONEINR S ois cco oe os oo ae gee eo dee eee tq e qup eR EE op dd 13 TROUBLESHOOTING 64524 cone enc te enda Se eee te eee queue te ee heen qua qi eens QUE 14 INA HECE S see oe te ses ne aD eR ee ee den eee ee ee 20 CARE AND MAINTENANCE 5 E RENE SY Tha Rr RR eed oa s x a RR wu dard a d 20 PURON REFRIGERANT QUICK REFERENCE GUIDE eeeee eens 20 Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces II189BNV 03 IMPORTANT Effective January 1 2015 all split system and packaged air conditioners must be installed pursuant to applicable regional efficiency standards issued by the Department of Energy Information in these installation instructions pertains only to 189BNV series units SAFETY CONSIDERATIONS Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause death personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow2. Adjust refrigerant charge by adding or removing the charge to from the unit depending on lineset length and indoor unit as calculated and displayed on the UI The user interface UT calculates required charge adjustment and total system charge required For proper unit operation check refrigerant charge using charging information in the Check Charge section of this instruction IMPORTANT Liquid line size is 3 8 in OD for all 189BNV applications The maximum allowable equivalent line set length is 100 ft 30 5 m IMPORTANT Always install the factory supplied liquid line filter drier Obtain replacement filter driers from your distributor or branch Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations INSTALLATION Specifications for this unit in residential new construction market require the outdoor unit indoor unit including metering device refrigerant tubing sets and filter drier listed in pre sale literature There can be no deviation Consult the Service Manual Air Conditioners and Heat Pumps Using Puron Refrigerant to obtain required unit changes for specific applications and for R 22 retrofit Step 1 Check Equipment and Job Site Unpack Unit Move to final location Remove carton taking care not to damage unit Inspect Equipment File claim with shipping company prior to installation if shipment is damaged or incomplete Locate unit ratin
3. clearance on 1 side of unit and 12 in 304 8 mm on all remaining sides must be maintained Maintain a distance of 24 in 609 6 mm between units Position so water snow or ice from roof or eaves cannot fall directly on unit On rooftop applications locate unit at least 6 in 152 4 mm above roof surface 3 8 in 9 53 mm Dia Tie down Knockouts in Basepan 2 Places View From Top A05177 UNITBASEPAN TIEDOWN KNOCKOUT LOCATIONS in mm Dimension in mm A B C 596 X 696 7 13 16 198 4 7 16 102 18 1 8 458 7762 X 195 9 1 8 232 6 9 16 167 24 11 16 627 888 X GR 9 1 8 232 6 9 16 167 28 7 16 722 Fig 2 Tie down Knockout Locations Catalog No II189BNV 04 Replaces II189BNV 03 Step 4 Operating Ambient The minimum outdoor operating ambient is 40 F 4 4 C with Evolution Connex Control 55 F 12 8 C with non communicating systems The maximum outdoor operating ambient is 115 F 46 1 C Compressor protections will prevent operation below minimum ambient temperature range The system may operate in cooling up to 125 F 52 C 52C with significant reduced capacity cutback above 115 F 46 1 C Refer to Product Data Detailed Cooling Capacity table Low ambient cooling operation is not currently available Step 5 Elevat
4. 58 C Outdoor Ambient Temperature F C Outdoor Ambient Temperature F C Fig 19 Charging in Cooling Mode 189BNV024A 25 Fig 23 Charging in Cooling Mode 189BNV048 CHARGING IN COOLING MODE 24B Liquid Service Valve Subcooling 13 CHARGING IN COOLING MODE 49 Liquid Service Valve Subcooling 14 13 0 10 3 12 0 11 0 SUBCOOLING TEMPERATURE F SUBCOOLING TEMPERATURE C 5 LE Ec 100 e P E pp z z j o 80 3 S a 7 B P 1 6 65 70 TS 80 85 90 95 100 105 6 0 36 C 39 C 42 C 44 C 47 C 50 C 53 C 56 C 58 C n n 75 a0 i y 95 100 105 dakion Senn Pit 36 C 39 C 42 C 44C 47 C 50 C 53 C 56 C 58 C Outdoor Ambient Temperature F C Fig 20 Charging in Cooling Mode 189BNV024B Fig 24 Charging in Cooling Mode 189BNV049 CHARGING IN COOLING MODE 36 Liquid Service Valve Subcooling CHARGING IN COOLING MODE 60 Liquid Service Valve Subcooling 10 0 6 6 8 9 A eo co wo 55 7 8 44 N 6 6 5 5 14 8 44 6 3 3 65 70 75 80 85 90 95 100 105 110 115 36 C 39 C 42 C 44 C 47 C 50 C 53 C 56 C 58 C 61 C 64 C 3 3 2 2 SUBCOOLING TEMPERATURE F SUBCOOLING TEMPERATURE C SUBCOOLING TEMPERATURE F SUBCOOLING TEMPERATURE C e 65 70 75 80 85 90 95 100 105 36 C 39 C 42 C 44 C 47 C 50 C 53 C 56 C 58 C Outdoor Ambient Te
5. TET a Pins 1 4 Pins 2 3 13 HK70EZ028 11K 180K 24A 25 HK7OEZO11 5 1K 150K 24B HK70EZ010 5 1K 120K 36 HK70EZ012 5 1K 180K 37 HK70EZ025 11K 91K 48 HK70EZ013 5 1K 220K 49 HK70EZ027 11K 150K 60 HK70EZ014 5 1K 270K Service Tool A150062 Fig 27 Service Tool Connection When working on the outdoor unit of a split system the technician would usually need to repeatedly walk between the indoor wall control and the unit outside To save time the communicating controls offer a service tool feature By wiring the service tool into the AOC board and powering it with an external adapter the technician can have a wall control capable of running the system right at the outdoor unit Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces II189BNV 03 To use a Service tool connect the A and B communication bus wires from this second communicating control to the terminals marked A and B on the terminal strip located in the bottom left corner of the AOC board see Fig 27 But instead of connecting the wires on the service tool to the terminals marked C and D connect the C and D wires from the service tool to the 24V and C on ST1 as shown in Fig 27 When the service tool is connected and powered up the communicating controls inside the home will go to sleep and let the service tool take control of the syst
6. Variable 1 2 sec ON Speed longer pause Range Cutback 1 second OFF 5 230VAC DropoutResetEvent 49 6 A 7 i 7 7 5 i 7 3 5 Compressor Inverter Overcurrent Lookout 69 15 VDC Under Voltage Lockout 96 2Hows HghTequeEvent 38 10 High Torque Lockout 99 Hours Eom o O OFF Short Flashes indicate the first digit in the status code followed by long flashes indicating the second digit of the status code 341475 101 REV A Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces II189BNV 03 19 FINAL CHECKS CARE AND MAINTENANCE IMPORTANT Before leaving job be sure to do the For continuing high performance and to minimize following possible equipment failure periodic maintenance must be 1 Ensure that all wiring is routed away from tubing performed on this equipment and sheet metal edges to prevent rub through or Frequency of maintenance may vary depending upon wire pinching geographic areas such as coastal applications See 2 Ensure that all wiring and tubing is secure in unit Owner s Manual for information before adding panels and covers Securely fasten all panels and covers 3 Tighten service valve stem caps to 1 12 turn past finger tight 4 Leave User s Manual with owner Explain system operation and periodic mainten
7. all safety codes Wear safety glasses protective clothing and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and current editions of the National Electrical Code NEC NFPA 70 In Canada refer to current editions of the Canadian electrical code CSA 22 1 Recognize safety information This is the safety alert symbol A When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand these signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which would 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 A CAUTION CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing and gloves when handling parts A WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could result in personal
8. are Y Y2 Y1 R and C Depending on thermostat and indoor unit the system will operate at 1 or 2 capacities in cooling mode NOTE Only one code will be displayed on the outdoor unit control board the most recent with the highest priority The latest codes are stored and can be accessed via the UI Upon a call for cooling through the UI or the Y1 and or Y2 connections in a non communicating system the Application Operation Control AOC board see Fig 26 will request a compressor speed and outdoor fan motor speed based on the indoor space demand and outdoor conditions If the conditions are correct for operation the control board will allow the requested operation to begin but if the control board determines that the conditions are not correct the board will decide what other operation nearing that condition is acceptable The inverter Motor Operational Control MOC then outputs the three phase PWM signal and frequency that gently ramps the compressor speed up to stage 2 and then will adjust to the demanded speed The gentle ramp up results in no locked rotor amps to the compressor motor The unit nameplate for compressor LRA will be stamped N A not applicable During operation the AOC monitors itself and the compressor operation along with the system pressures and temperatures The MOC board monitors the temperature current and operational status of the compressor OD fan and the inverter itself During operation the compre
9. in text is selected the additional charge required is broken down into the line set adder and indoor coil size adder refrigerant charging setup furnace coil CNP 31 line set 5 ft vapor line 5 8 in A14569 line settings line set vapor line 5 f 5 8 in ii Cn P X i ai cancel A A14570 Fig 12 Select Line Set Length amp Vapor Line Diameter Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations A CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in improper unit operation For new installations only Add additional refrigerant due to indoor coil line set and vapor line settings Outdoor unit is pre charged with weight of refrigerant shown on rating plate charging mode selection weigh in 15 lb 120z total charge service valve subcool Fig 13 Weigh In Value 4 Add additional required charge for line set and indoor coil size then fully open liquid and vapor service valves If line set is less than 15 feet 4 57 m in length charge removal may be necessary and will be shown as a negative number on UI screen A14571 Factory Charge charge weigh in expected factory charge 2 Ib 0 oz gt a add for line set 0 Ib 120z Additional Charge COWET Required addforindoorcoilsize 1 Iib O oz e Fig 14 Additional Required Charge A14572 Catalog No II1
10. in a more favorable range NOTE If the line length is beyond 80ft 24 38 m or greater than 20ft 6 10 m vertical separation see Long line guideline for special charging requirement Table 2 Required Charge Adjustment for Indoor Coil Model Furnace or Fan Coil Model Number be eee es ae 13 24B 24A 36 37 48 49 60 CNPV 18 CAP 18 CNP 24 CNPV 19 CAP 24 CSPH 24 CSPH 30 F E V A A B C NF002 0 19 CAP 30 CNP 30 CNP 36 F E V 4 A B C N B F 003 CAP 36 50 CNP 42 50 50 75 CAP 42 50 50 75 CSPH 36 50 50 75 CSPH 42 50 50 75 75 CNP 31 50 1 25 75 75 CNP 48 50 1 25 75 75 CSPH 48 625 1 25 75 1 00 CNP 37 625 1 25 75 1 00 CNP 43 625 1 25 75 1 00 CAP 48 75 1 00 CNP 60 1 00 0 125 CSPH 60 1 00 0 125 F E V 4 A B C N B F 005 625 1 25 75 1 00 0 125 F E V 4 A B C NBO06 75 1 00 1 5 625 1 00 CAP 60 1 5 625 1 00 CNP 61 1 5 625 1 00 Comb not allowed No charge adjust
11. injury or equipment damage Puron 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 ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before installing modifying or servicing system main electrical disconnect switch must be in the OFF position There may be more than 1 disconnect switch Lock out and tag switch with a suitable warning label Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Indoor Thermostat Control Options Model Evolution Connex Standard Control Thermostat 189BNV Yes Yes Requires model SYSTXBBECC01 SYSTXBBECWO01 or SYSTXBBECNO1 with version 11 software or newer Version 12 software or newer required for model size 13 Using standard thermostat limits functionality of system A WARNING ELECTRICAL HAZARD HIGH VOLTAGE Failure to follow this warning could result in personal injury or death Electrical components may hold charge DO NOT remove control box cover for 2 minutes after power has been removed from unit PRIOR TO TOUCHING ELECTRICAL COMPONENTS Verify zero 0 voltage at inverter connections shown on inverter cover A WARNING EXPLOSION HAZARD Failure to follow this warning could result in de
12. newer software required on model size 13 When using an Evolution Connex User Interface airflow is automatically selected based on equipment size The user has the option of selecting Comfort Efficiency and Max airflow for Cooling modes These should be selected based on balance between the homeowner s comfort and energy consumption expectations See User Interface Installation Instructions for additional available adjustments Due to using a communicating control with the fan coil or the furnace dip switch adjustments are not necessary The outdoor unit configuration and the indoor airflows are determined by communicating control setup Airflow Setup for Non communicating Fan Coil The system can be installed with a standard 2 stage thermostat and FV4C fan coil without additional accessories Select appropriate unit size on fan coil Easy select board NOTE FK4 and 40FK require a TXV change See accessory list for approved TXV NOTE 189BNVO013 is AHRI rated with communicating indoor units only due to low stage airflow requirements Airflow Setup for Non communicating Furnaces For installations with non communicating furnaces set airflows to 350 400 cfm nominal ton in high stage and 70 80 percent of high stage airflow in low stage Step 9 Install Accessories No refrigeration circuit accessories are required or are available for installation within the unit External to the unit the same accessories such as support feet
13. 189BNV EVOLUTION V VARIABLE SPEED AIR CONDITIONER WITH PURON REFRIGERANT Installation Instructions NOTE Read the entire instruction manual before starting the installation TABLE OF CONTENTS PAGE NO SAFETY CONSIDERATIONS ec ee ee e m 9 I 3 hn 2 INSTALLATION RECOMMENDATIONS eeeeee ehh I 3 I th 2 MNS TAL ATION 4 cee rrr m 3 Step T Check Equipmentaud JOD SHE 4 25 2 39m Ch EUR orae aree d a a a a d e E E ed 3 Step 2 Install on Solid Level Mounting Pad llle hr 3 5p Clearance Require ies ses eiee aii a dario s Soi garam Go oe a dap SU Noel yar moo Bog Sram oe Seelam B a e deed 3 pico Operan AMDICUL o2420444944265446442045404425544854205445443655464226444554446555 4 Sieps Blevdle Unit ausa aee dp hens Rone MA a eicit he dux OGG ME b eee Re Ge BORE Re eu RP ee Recs Bees 4 Step 6 Making Piping ConnmeChOus 2222644 cc40deneddaeeesi adap hene RR AW RASA RATER 244 FAEERE E 4 Step 7 Make Electrical Connections suus euer ee ee eee eee ee ee bee ee ee eee sees 5 Step 8 Compressor Internal Crankcase Heater 0 0 ce ee eee en 8 Step 9 Install ACCessONnes 425446 cet Dre Ra ERR ded Pa pe aC eae E ARATRO unre ge RR CRUS 8 SED dU eee oio ae eae ee eG IE ae ATE HE Ape MP RE e eee E Ce RS 8 Step 11 System Functions and Sequence of Operation 0 cece cece tt en 10 SIMILIS SO
14. 38 30 48 m capacity and performance losses can occur Follow the pipe sizing recommendations in the 189BNV Product data to manage these losses This unit shall not be installed with greater than 100 ft 30 48 m of equivalent line length Refer to Table 1 for field tubing diameters No additional accessories are required for line lengths between 80 100 ft 24 4 30 5 m on this product Outdoor Unit Connected to Factory Approved Indoor Unit Outdoor unit contains correct system refrigerant charge for operation with factory approved AHRI rated indoor units when connected by 15 ft 4 57 m of field supplied or factory accessory tubing and factory supplied filter drier Check refrigerant charge for maximum efficiency NOTE If the indoor furnace coil width is more than the furnace casing width refer to the indoor coil Installation Instructions for transition requirements Install Liquid Line Filter Drier Indoor Refer to Fig 3 and install filter drier as follows 1 Braze 5 in 127 mm liquid tube to the indoor coil 2 Wrap filter drier with damp cloth 3 Braze filter drier to above 5 in 127 mm liquid tube 4 Connect and braze liquid refrigerant tube to the filter drier A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in unit damage or improper operation Installation of filter drier in liquid line is required A05178 Fig 3 Liquid Line F
15. 89BNV 04 Replaces II189BNV 03 Step 11 System Functions and Sequence of Operation The 189BNV models utilize either Evolution Connex Communicating User Interface UI or conventional thermostat When using UI controls a call for cooling will energize the outdoor fan and compressor to run at lowest cooling demand If this does not satisfy cooling demand the system will ramp up in stages until it satisfies the demand After coping with the higher demand the unit returns to lower capacity operation until the demand is satisfied or until an increase in demand When using a conventional thermostat the thermostat controls the staging of outdoor unit Upon initial start up of unit status code 68 will be generated and system will operate at stage 2 for 11 minutes This operation is important to system reliability and cannot be bypassed Each time high voltage is removed and reapplied this behavior will be repeated When all demand is satisfied the compressor will shut off As the unit operates at lower capacity system vapor suction pressure will be higher than it is during a standard single stage system operation or during a higher capacity operation The user interface UI displays the operation mode and fault codes as specified in the troubleshooting section See Table 6 for codes and definitions The conventional thermostat inputs are designed to work with most indoor units See AHRI for approved combinations Connections
16. A factory approved liquid line filter drier is required on every unit e Do NOT use an R 22 TXV e f indoor unit is equipped with an R 22 TXV or piston metering device it must be changed to a hard shutoff Puron refrigerant TXV e Never open system to atmosphere while it is under a vacuum e When system must be opened for service recover refrigerant evacuate then break vacuum with dry nitrogen and replace filter driers Evacuate to 500 microns prior to recharging Do not vent Puron refrigerant into the atmosphere Do not use capillary tube coils Observe all warnings cautions and bold text e All indoor coils must be installed with a hard shutoff Puron refrigerant TX V metering device Bryant Heating amp Cooling Systems 7310 W Morris St Indianapolis IN 46231 Edition Date 03 15 Catalog No II189BNV 05 Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Replaces I1 89BNV 04 20
17. after a brief delay 5 Close the liquid service valve 6 The unit will run in selected mode with the low pressure protection set to indicate pump down is complete when the suction pressure drops below 10 psig Compressor protec tions are still active to prevent damage to the compressor or inverter high pressure high current high torque etc 7 Once system indicates pump down complete or failure to complete shutdown close vapor service valve 8 A small quantity of charge will remain in isolated section of system dependent on ambient temperature and overall sys tem charge This charge must be manually recovered A recovery system will be required to remove final quantity of refrigerant from indoor coil and line set 9 Remove power from indoor and outdoor unit prior to ser vicing unit Pump Down Using 2 stage Thermostat Non Communicating Because this system has an inverter controlled compressor suction pressure transducer conventional procedure cannot be used to pump down and isolate the refrigerant into the outdoor unit 1 Connect gauges to 189BNV liquid and vapor service valve ports to monitor operating pressures during and at completion of the procedure 2 Force system to operate in high stage by creating a large differential between room temperature and set point on thermostat Use multi meter to verify that 24 VAC is present between C and Y1 and Y2 terminals at outdoor unit 3 Close the liquid serv
18. ance requirements outlined in manual 5 Fill out Dealer Installation Checklist and place in customer file PURON R 410A REFRIGERANT QUICK REFERENCE GUIDE Puron refrigerant operates at 50 70 percent higher pressures than R 22 Be sure that servicing equipment and replacement components are designed to operate with Puron refrigerant Puron refrigerant cylinders are rose colored e Recovery cylinder service pressure rating must be 400 psig DOT 4BA400 or DOT BW400 Puron refrigerant systems should be charged with liquid refrigerant Use a commercial type metering device in the manifold hose when charging into suction line with compressor operating e Manifold sets should be 700 psig high side and 180 psig low side with 550 psig low side retard Use hoses with 700 psig service pressure rating e Leak detectors should be designed to detect HFC refrigerant Puron refrigerant as with other HFCs is only compatible with POE oils e Vacuum pumps will not remove moisture from oil Do not use liquid line filter driers with rated working pressures less than 600 psig Do not leave Puron refrigerant suction line filter driers in line longer than 72 hours Do not install a suction line filter drier in liquid line e POE oils absorb moisture rapidly Do not expose oil to atmosphere POE oils may cause damage to certain plastics and roofing materials e Wrap all filter driers and service valves with wet cloth when brazing e
19. ath serious personal injury and or property damage Never use air or gases containing oxygen for leak testing or operating refrigerant compressors Pressurized mixtures of air or gases containing oxygen can lead to an explosion Inverter Cover IMPORTANT The inverter cover should NEVER be removed because there is no reason to remove the inverter cover to access the inverter The inverter has limited serviceability Refer to Service Manual for details on field replaceable parts A replacement cover is provided with a replacement inverter INSTALLATION RECOMMENDATIONS In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment 1 Locate unit away from windows patios decks etc where unit operation sound may disturb customer 2 In noise sensitive applications such as bedrooms when a lineset is mounted to ceiling joists or floor joists the out door unit must be located at least 10 ft 3 05 m away If this is not possible create a line set configuration with enough bends to provide 10 ft 3 05 m of total line set length outside the dwelling 3 Ensure that vapor and liquid tube diameters are appropriate for unit capacity 4 Run refrigerant tubes as directly as possible by avoiding un necessary turns and bends 5 Leave some slack between structure and unit to absorb vi bration 6 When passing refrigerant tubes through the wall seal open ing with RTV or other p
20. box A11142 Fig 31 OAT Thermistor Location Bottom of Control Box Suction Thermistor OST Suction Thermistor is used to accurately measure suction temperature and must be secured on the suction tube and aligned longitudinally to the vertical surface of the tube axis see Fig 32 P NO VO LOT UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation In order to minimize the ambient influence make sure the thermistor curved surface hugs the pipe surface and is secured tight using the wire tie fished through the original slot insulating polymer body i A14023 Fig 32 Suction Thermistor OST Attachment On Suction Tube Discharge Thermistor ODT Discharge Thermistor is used for protection against over temperature of the compressor The ODT is located on the compressor discharge stub out see Fig 33 A14024 Fig 33 Discharge Thermistor ODT Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces II189BNV 03 Variable Speed Compressor Winding Resistance This compressor operates with 3 phase variable frequency PWM variable voltage For troubleshooting certain fault codes related to compressor resistances follow these steps 1 Disconnect compressor power leads from the inverter MOC terminals U YEL V RED and W BLK 2 Measure the resis
21. cates a 32 code Table 6 shows this to be low pressure switch open Utility Interface With Evolution Connex Control The utility curtailment relay should be wired between the two UTIL connections on the control board for this Evolution Communicating System see Fig 34 This input allows a power utility device to interrupt compressor operation during peak load periods When the utility sends a signal to shut the system down the User Interface status screen will display Curtailment Yes See UI installation instructions for setup details Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 17 Replaces II189BNV 03 e SH ZKBDCE0R 5 2015 05 05 ell re C rios C17 d S da EJ amp I wy N om EY BERBE EELS f ke WM 5 nnt ex 4 gt ww iH TE S A gt N L H y E JE d Fan d ET pE ces rr 3 5 Utility Relay A13414 Fig 34 Variable Speed Control Board with optional Utility Relay Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces Il189BNV 03 18 Table 6 Troubleshooting SERVICE FLASH RESET TIME AMBER LED DESCRIPTION CODE Minimum Amber LED Minutes Stndy ON no flash Variable E pus l
22. cess This is normal TROUBLESHOOTING Systems Communication Failure If communication is lost with the User Interface UI the control will flash the appropriate fault code see Table 6 Check the wiring to the User Interface and the indoor and outdoor units and power Model Plug Each control board contains a model plug The correct model plug must be installed for the system to operate properly see Table 3 The model plug is used to identify the type and size of unit to the control On new units the model and serial numbers are inputted into the AOC board s memory at the factory If a model plug is lost or missing at initial installation the unit will operate according to the information input at the factory and the appropriate error code will flash temporarily An RCD replacement AOC board contains no model and serial information If the factory control board fails the model plug must be transferred from the original board to the replacement board for the unit to operate When installing AC unit with older fan coils a model plug change may be required NOTE The model plug takes priority over factory model information input at the factory If the model plug is removed after initial power up the unit will operate according to the last valid model plug installed and flash the appropriate fault code temporarily Table 3 Factory Supplied Model Plug Information PIN RESISTANCE onms 189BNV lis
23. d designs without notice and without obligations 15 Replaces II189BNV 03 Thermistor Sensor Comparison The control continuously monitors and compares the outdoor air temperature sensor and outdoor coil temperature sensor to ensure proper operating conditions The comparison is n cooling if the outdoor air sensor indicates 10 F gt 5 6 C warmer than the coil sensor or the outdoor air sensor indicates 25 F 12 C cooler than the coil sensor the sensors are out of range If the sensors are out of range the control will flash the appropriate fault code as shown in Table 6 The thermistor comparisons are not performed during low ambient cooling Outdoor Coil Thermistor The outdoor coil thermistor is a 10Kohm resistor used for multiple system operations It provides the coil liquid line temperature to the AC unit board and user interface Low ambient operation and assistance with OAT temperature measurement are some of the functions The sensor must be securely mounted to the tube connecting the coil and distributor See Fig 31 for proper placement See Table 4 for proper resistances OCT Sensor Location A14328 Fig 30 Outdoor Coil Thermistor OCT Attachment On Distributor Tube OAT Thermistor must be locked in place with spherical nib end facing towards the front of the control
24. e Unit Elevate unit per local climate and code requirements to provide clearance above estimated snowfall level and ensure adequate drainage of unit A CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in equipment damage or improper operation Do not allow water and or ice to build up in base pan A CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in equipment damage or improper operation Locate the unit in such a way that it is stable in all circumstances including adverse weather conditions Step 6 Make Piping Connections A WARNING PERSONAL INJURY AND UNIT DAMAGE HAZARD Failure to follow this warning could result in personal injury or death Relieve pressure and recover all refrigerant before system repair or final unit disposal Use all service ports and open all flow control devices including solenoid valves A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Do not leave system open to atmosphere any longer than minimum required for installation POE oil in compressor is extremely susceptible to moisture absorption Always keep ends of tubing sealed during installation Outdoor units may be connected to indoor section using accessory tubing package or field supplied refrigerant grade tubing of correct size and condition For tubing requirements between 80 100 ft 24
25. eat Stage 3 furnace Heat Cool Stage 1 E uaa x Si albi Heat Cool Stage 2 Sadia Single Stage Fan 24VAC Hot Heating wt Rh PLR P 24VAC Hot Cooling ia dobar on Control Board Dry Contact 1 Dry Contact 2 24VAC Common C I EL COM RaT Humidify i Ba Humidifier Solenoid Outdoor Air Temp 71 Valve a Remote Room Sensor x Outdoor Sensor in Sensor BERN UI A14029AC Fig 7 Low Voltage Wiring Non Communicating Catalog No II1189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces II189BNV 03 7 Step 8 Compressor Crankcase Heater This compressor has an internal crankcase heater Furnish power to the unit a minimum of 24 hours before starting the unit for the first time To furnish power to heater only set thermostat to OFF and close electrical disconnect to outdoor unit Power is not required to the indoor unit or User Interface for proper operation of heater Crankcase heater will be intelligently energized as needed between operations even when the UI or thermostat and indoor unit is not installed as long as there is power to the outdoor unit Airflow Setup for Evolution Furnace or FE Fan Coil communicating This system can only be installed with Evolution capable indoor and Evolution Connex User Interface UI SYSTXBBECCOI SYSTXBBECW01 or SYSTXBBECNO1 with version 11 software or newer Version 12 or
26. em In this manner the service technician can run the diagnostic checkouts right at the outdoor unit using the service tool After the checkouts are completed and it is no longer necessary to use the service tool remove it from the communicating controls and the indoor communicating controls will regain control in about two minutes Pressure Switch Protection The outdoor unit is equipped with high pressure switch If the control senses the opening of a high pressure switch open 600 5 psig close 470 10 psig 77 F it will respond as follows 1 Display the appropriate fault code see Table 6 2 After a 15 minute delay if there is a call for cooling and HPS is reset the PEV opens for 150 seconds to equalize system pressures The compressor and fan will then ramp to the next lower stage of operation until demand is satisfied In the next call for cooling system will resume normal oper ation 3 If the opened switch closes at any time after the 15 minute delay then the PEV opens for 150 seconds to equalize sys tem pressures The compressor and fan will then ramp to the next lower stage of operation until demand is satisfied In the next call for cooling system will resume normal opera tion 4 If HPS trips 3 consecutive cycles the unit operation is locked out for 4 hours 5 In the event of a high pressure switch trip or high pressure lockout check the refrigerant charge outdoor fan operation and outdoor coil in c
27. en ground to minimize personal injury if an electrical fault should occur The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes Connect Ground and Power Wires Connect ground wire to ground connection in control box for safety Connect power wiring to contactor as shown in Fig 5 DISCONNECT PER N E C AND OR LOCAL CODES TERMINAL BLOCK FIELD POWER O OE eee OQ O FIELD GROUND Q WIRING GROUND a LUG A14028 Fig 5 Line Power Connections Catalog No I1189BNV 04 Replaces Il189BNV 03 Connect Control Wiring Evolution Connex Connect to Evolution connections Only two wires AB to Evolution capable indoor unit furnace or fan coil are required Connect C if additional grounding is required see Fig 6 IMPORTANT This system requires the power supplied to the outdoor unit and the indoor unit for the UI to communicate with the outdoor unit Connect Control Wiring Non Communicating 4 wires are required when connecting 189BNV models to non communicating 2 stage thermostats Use Fig 7 For required connections Unit is configured by factory for Evolution communicating control To wire unit for non communicating control disconnect the green A and yellow B wires from ABCD plug and connect appropriate wires to low voltage terminal block Use wire nuts to attach thermostat wire to LVCH harness General Information Use No 18 AWG or
28. for ID Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces I1 89BNV 03 11 CHARGING IN COOLING MODE 13 CHARGING IN COOLING MODE 37 40 5 Liquid Service Valve Subcooling 103 140 Liquid Service Valve Subcooling 10 0 12 0 oO u 95 o 100 uj is Lu Ss gt 5 a p 9 0 E E 8 0 a a a m 85 m E 80 m e e e 2 o S 380 a 40 S S S a z gt 3 S e 15 e 20 o 70 0 0 65 70 75 80 85 90 95 100 105 65 70 75 80 85 90 95 100 105 36 C 39 C 42 C 44 C 47 C 50 C 53 C 56 C 58 C 36 C 39 C 42 C 44 C 47 C 50 C 53 C 56 C 58 C Outdoor Ambient Temperature F C Outdoor Ambient Temperature F C Fig 18 Charging in Cooling Mode 189BNV013 Fig 22 Charging in Cooling Mode 189BNV037 CHARGING IN COOLING MODE 24A 25 Liquid Service Valve Subcooling CHARGING IN COOLING MODE 48 12 6 6 Liquid Service Valve Subcooling 16 8 9 u 10 5 5 o E 44 78 o LLI lu o o c x wW 14 e H E 8 44 z x Lr r m E Gb 10 55 ni Lu a a B 6 33 E 8 44 im e e Lr I z z c a Z 6 33 Z S 4 2 2 O a o o o Oo eo ta m oO c gt 2 a4 22 m o o gt gt 2 14 o e 2 1 1 0 0 0 0 65 70 75 80 85 90 95 100 105 65 70 75 80 85 90 95 100 105 36 C 39 C 42 C 44 C 47 C 50 C 53 C 56 C 58 C 36 C 39 C 42 C 44 C 47 C 50 C 53 C 56 C
29. for performance data when using different size and length line sets Notes 1 Do not apply capillary tube indoor coils to these units Evacuate Refrigerant Tubing and Indoor Coil P CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation Never use the system compressor as a vacuum pump Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns The alternate triple evacuation method may be used See Service Manual for triple evacuation method Always break a vacuum with dry nitrogen prior to opening the refrigerant system for servicing Deep Vacuum Method The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gauge capable of accurately measuring this vacuum depth The deep vacuum method is the most positive way of assuring a system is free of air and liquid water See Fig 4 5000 ioo i 4000 so ENN OE ae 5 3000 E J LL 4 O PME 2000 1500 E VACUUM TIGHT E TOO WET T TIGHT SUM DRY SYSTEM O 1 2 3 4 5 6 7 MINUTES AQ95424 Fig 4 Deep Vacuum Graph Final Tubing Check IMPORTANT Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment Ensure tubes are not rubbing against each other or any sheet metal Pay close attention to feeder tubes making sure wire ties on feeder tubes are secure and
30. g plate on unit corner panel It contains information needed to properly install unit Check rating plate to be sure unit matches job specifications Step 2 Install on a Solid Level Mounting Pad If conditions or local codes require the unit be attached to pad tie down bolts should be used and fastened through knockouts provided in unit base pan Refer to unit mounting pattern in Fig 2 to determine base pan size and knockout hole location For hurricane tie downs contact distributor for details and PE Professional Engineer Certification if required On rooftop applications mount on level platform or frame Place unit above a load bearing wall and isolate unit and tubing set from structure Arrange supporting members to adequately support unit and minimize transmission of vibration to building Consult local codes governing rooftop applications Roof mounted units exposed to winds above 5 mph may require wind baffles Consult the Service Manual Residential Split System Air Conditioners and Heat Pumps Using Puron Refrigerant for wind baffle construction NOTE Unit must be level to within 2 3 8 in ft 9 5 mm m per compressor manufacturer specifications Step 3 Clearance Requirements When installing allow sufficient space for airflow clearance wiring refrigerant piping and service Allow 24 in 609 6 mm clearance to service end of unit and 48 in 1219 2 mm above unit For proper airflow a 6 in 152 4 mm
31. ice valve 4 The unit will continue to run until high or low pressure switches open Close vapor service valve once compressor shuts down 5 Remove power from indoor and outdoor unit prior to servicing unit 6 A quantity of charge will remain in isolated section of system dependent on ambient temperature and overall system charge This charge must be manually recovered A recovery system will be required to remove final quantity of refrigerant from indoor coil and line set Evacuation and recovery of refrigerant from 189BNV 1 Connect gauges to 189BNV liquid and vapor service valve ports to monitor operating pressures during and at comple tion of the procedure Attach recovery system or vacuum pump to gauge set as needed for the service procedure The service valves must be open to evacuate the unit through the line set service ports Evacuation and recovery of refrigerant from 189BNV when using non communicating thermostat 1 Connect gauges to 189BNV liquid and vapor service valve ports to monitor operating pressures during and at completion of the procedure Attach recovery system or vacuum pump to gauge set as needed for the service procedure The service valves must be open to evacuate the unit through the line set service ports MAJOR COMPONENTS Variable speed Control Board A13361 Fig 26 AOC Application Operational Control Board The AOC board is located in the lower right hand side of inverter tray It s functio
32. ilable in the charging mode selection screen If temperatures are outside of range this option will be greyed out and not selectable Initial start up can be performed using calculated charge only and once conditions are within range the Service Valve Subcool option will become selectable Once start is selected the system will operate in a preset mode until done is selected Wait for required stabilization time then check subcooling at service valve Adjust charge as required to meet target service valve subcooling shown on screen 1 degree If any adjustment is necessary add or remove the charge slowly no greater than 5 Ib per minute and allow system to operate for 25 minutes to stabilize before declaring a properly charged system charging mode selection weigh in 15 Ib 120z total charge A14573 Fig 15 Adjusting Charge Using Service Valve Subcool service valve subcool targetservice valve subcool 8 3 F A14574 Fig 16 Service Valve Subcool Target Value service valve subcool please wait mode stage speed EXV position indoor airflow back e Fig 17 Stabilization Time cool 5 stg 3201 rpm 100 96 800 cfm A14575 Catalog No I1189BNV 04 Replaces Il189BNV 03 Charging Non Communicating Systems Charging Procedure Force system to operate in high stage cooling by creating a large differential between room temperature and set point on thermostat U
33. ilter Drier Refrigerant Tubing connection Outdoor Connect vapor tube to fitting on outdoor unit vapor service valves see Table 1 Sweat Connections A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation e Use a brazing shield e Wrap service valves with wet cloth or heat sink material Use refrigerant grade tubing Service valves are closed from factory and ready for brazing After wrapping service valve with a wet cloth braze sweat connections using industry accepted methods and materials Consult local code requirements Refrigerant tubing and indoor coil are now ready for leak testing This check should include all field and factory joints Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces Il189BNV 03 Table 1 Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters in LIQUID VAPORt 189BNV Connection Diame Tube Diameter Connection Di Max Rated Diam Minimum Tube Diame ter ameter eter ter 13 24B 3 8 3 8 3 4 3 4 5 8 24A 25 3 8 3 8 3 4 7 8 5 8 36 37 3 8 3 8 3 4 7 8 5 8 48 49 3 8 3 8 7 8 1 1 8 3 4 60 3 8 3 8 7 8 1 1 8 3 4 24A unit height is 38 7 16 24B unit height is 31 5 8 T Units are rated with 25 ft 7 6 m of lineset See Product Data sheet
34. larger color coded insulated 35 C minimum wire for low voltage control wires All wiring must be NEC Class 2 and must be separated from incoming power leads Use furnace transformer fan coil transformer or accessory transformer for control power requirement of system accessories external to the OD unit The outdoor unit has its own transformer power Final Wiring Check IMPORTANT Check factory wiring and field wire connections to ensure terminations are secured properly Check wire routing to ensure wires are not in contact with tubing sheet metal etc User Interface Ul Furnace or Fan Coil VSAC C connection optional Humidifier A11144AC Fig 6 Evolution Furnace or Fan Coil Wiring with Communicating Variable Speed AC Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces II189BNV 03 Thermidistat Fan Coil A C RVS Cooling O B W2 Heat Stage 3 W W 1 Heat Cool Stage 1 F f Jumper Wire Required for Heat Cool Stage 2 spese Y Y2 a acai is 1Single Stage Fan 24VAC Hot Heating M qe 24VAC Hot Cooling J1 Jumper on Control Board Dry Contact 1 Nee e e o Dry Contact 2 24VAC Common doo H7 Humidify 1 s i Humidifier Solenoid Outdoor Air Temp 71 Valve N Remote Room Sensor 4 Outdoor Sensor n Sensor A14269AC Thermidistat A C RVS Cooling H
35. lations require that you do not vent refrigerant to the atmosphere Recover during system repair or final unit disposal Follow these steps to properly start up the system 1 After system is evacuated close the disconnects to energize indoor unit outdoor unit and User Interface UI Do not attempt to operate the system in heating or cooling mode at this time Mode OFF 2 Navigate to the service area by pressing MENU from main screen Scroll down to service icon and hold until icon turns green Once in the Installation and Service menu se lect Refrigerant Charging then select Charging Cooling photo u pload heatsource Fig 9 Service Icon A14566 Catalog No I1189BNV 04 Replaces Il189BNV 03 installation amp service service information refrigerant charging software upgrade dealer logo upload back A Fig 10 Select Refrigerant Charging A14567 refrigerant charge charging cooling htg check charge pumpdown evacuation EXV position back A Fig 11 Select Charging Subcooling A14568 3 If installed indoor unit is a furnace coil model should have been selected manually during the initial discovery process Press the text line set and vapor line to choose line set length and vapor line diameter After complete press next to advance to next screen The weigh in value is the total charge weight and includes refrigerant shipped in unit If weigh
36. liable silicon based caulk see Fig 1 7 Avoid direct tubing contact with water pipes duct work floor joists wall studs floors and walls Catalog No I1189BNV 04 Replaces Il189BNV 03 8 Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with tub ing see Fig 1 9 Ensure that tubing insulation is pliable and completely sur rounds vapor tube 10 When necessary use hanger straps which are 1 in wide and conform to shape of tubing insulation See Fig 1 11 Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation A CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in equipment damage If proper lineset routing techniques are not followed variable speed systems can be susceptible to lineset transmitted noise inside the dwelling and in extreme cases tubing breakage INDOOR WALL m LIQUID TUBE MEN TUBE THROUGH THE WALL P ee HANGER STRAP AROUND SUCTION TUBE ONLY INSULATION SUCTION TUBE b 3 Lc d 1 25 4 mm l i MIN LIQUID TUBE SUSPENSION INSULATION ce OOO A07588 Fig 1 Connecting Tubing Installation The outdoor unit contains the correct amount of refrigerant charge for operation with AHRI rated indoor units when connected by 15 ft 4 57 m of field supplied or factory accessory tubing
37. mperature F C Outdoor Ambient Temperature F C Fig 21 Charging in Cooling Mode 189BNV036 Fig 25 Charging in Cooling Mode 189BNV060 Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces II189BNV 03 12 Step 13 Pumpdown amp Evacuation A CAUTION ENVIRONMENTAL HAZARD Failure to follow this caution may result in environmental damage Federal regulations require that you do not vent refrigerant to the atmosphere Recover during system repair or final unit disposal If this system requires either a Pump Down or Evacuation for any reason the procedures below must be followed Pump Down Evolution Communicating Because this system is inverter controlled compressor suction pressure transducer conventional procedure cannot be used to pump down and isolate the refrigerant into the outdoor unit The UI User Interface has provisions to assist in performing this function 1 Connect gauges to 189BNV liquid and vapor service valve ports to monitor operating pressures during and at comple tion of the procedure 2 In the advanced menu of the UI go to Checkout gt Pump down 3 Select mode to pump down in COOL Set desired time period Default time period for the procedure is 120 min utes 4 Select Start on UI to begin the pump down process Unit will begin running in selected mode
38. ns include Compressor speed control Outdoor fan motor control Crankcase heater operation Pressure switch monitoring Time Delays Pressure Transducer measurements e PEV control pressure equalizer valve e Temperature measurements nverter communication and control Inverter The inverter is located inside the control box This is an air cooled device that communicates with the control board and drives the compressor and fan motor to the demanded RPM The inverter is always powered with line voltage since no contactor is used The inverter changes the line voltage to DC volts and then recreates 3 phase sine waves that vary in frequency to drive the compressor and fan motor at the desired RPM Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Replaces II189BNV 03 13 NOTE The unit may be operated with an Evolution Connex Control or a standard 2 stage thermostat Evolution Connex Control will utilize 5 stages cooling while 2 stage thermostat will only allow 2 discrete stages of cooling operation Variable Speed Compressor This unit contains a variable speed rotary compressor that has a wide operating range It operates on a variable 3 phase sine wave provided by the inverter This compressor can only be operated by the specific inverter supplied with the unit A CAUTION EQUIPMENT DAMAGE HAZARD Failure
39. ooling for airflow restrictions 6 In the event of a low pressure trip or low pressure lockout check the refrigerant charge and indoor airflow cooling Control Fault If the outdoor unit control board has failed the control will flash the appropriate fault code see Table 6 The control board should be replaced Brown Out Protection If the line voltage is less than 187V for at least 4 seconds the Compressor and OD fan goes to 0 rpm Compressor and fan operation are not allowed until voltage is a minimum of 190V The control will flash the appropriate fault code see Table 6 230V Line Power Disconnect Detection The control board senses the presence of absence of 230V through inverter feedback Voltage should present at all times when system is in service regardless if system is running or standby If there is no 230V at the inverter when the indoor unit is powered with a cooling demand the appropriate fault code is displayed on UI communicating only see Table 6 If system is configured with conventional thermostat non communicating no fault code will be displayed on AOC board nor will any status LEDs be lit Use multimeter to check for the presence of 230V in this situation Temperature Thermistors Thermistors are electronic devices which sense temperature As the temperature increases the resistance decreases 10Kohm thermistors are used to sense outdoor air temperature OAT coil temperature OCT and the
40. se multi meter to verify that 24 VAC is present between C Y1 Y2 terminals at outdoor unit Factory charge amount is shown on unit rating plate for high stage Target subcooling chart is provided on back of control box door see Fig 18 25 for example To properly check or adjust charge condition must be favorable for subcooling charging Favorable conditions exists when outdoor temperature is between 65 F 18 C and 100 F 38 C and the indoor temperature is between 70 F 21 C and 80 F 27 C Follow the procedure below Unit is factory charged for 15ft 4 57 m of lineset Adjust charge by adding or removing 0 6 oz ft 17 7 g m of 3 8 liquid line above or below 15ft 4 57 m respectively For standard refrigerant line lengths 80ft 24 4 m or less allow system to operate in cooling mode at least 25 minutes If conditions are favorable check system charge by subcooling method If any adjustment is necessary adjust charge slowly and allow system to operate for 25 minutes to stabilize before declaring a properly charged system If the indoor temperature is below 70 F 21 11 C or the outdoor temperature is not in the favorable range adjust charge for line set length above or below 15ft 4 57 m and indoor fan coil furnace coil per Table 2 Charge level should then be appropriate for the system to achieve rated capacity The charge level should then be checked at another time when the both indoor and outdoor temperatures are
41. snow rack wind baffle etc available on other Bryant units can also be used on this line of product For models utilizing 23 inch x 23 inch base pans it is recommended to use 5 support feet in order to fully support unit See Fig 8 Refer to the individual Installation Instructions packaged with kits or accessories when installing Mo a EF A14008 Fig 8 Recommended Support Feet Location for 23 x 23 basepans Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Step 10 Start Up 7 E CAUTION UNIT OPERATION AND SAFETY HAZARD Failure to follow this caution may result in minor personal injury equipment damage or improper operation Observe the following 1 Do not overcharge system with refrigerant 2 Do not operate unit in a vacuum or at negative pressure 3 Do not disable low pressure transducer or system safety devices such as discharge thermistor or the high pressure switch 4 Dome temperatures may be hot 5 Discharge thermistor is engaged tight on the discharge tube 7 E CAUTION PERSONAL INJURY HAZARD Failure to follow this caution may result in personal injury Wear safety glasses protective clothing and gloves when handling refrigerant 7 E CAUTION ENVIRONMENTAL HAZARD Failure to follow this caution may result in environmental damage Federal regu
42. ssor speed will be adjusted to meet the changes to the demand Step 12 Check Charge Charge in CHARGING mode communicating only Unit is factory charged for 15ft 4 57 m of lineset If any refrigerant charge adjustment is required due to the user inputted line set length the UI will calculate and display the target subcooling and the amount of additional charge to be added Therefore the UI is your source of information for charging the system correctly Refrigerant charge adjustment amount for adding or removing 0 6 oz ft 17 74 g m of 3 8 liquid line above or below 15ft 4 57 m respectively Perform a final charge check only when in cooling and OD is between 65 F 18 C and 100 F 38 C Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations The use of a commercial charge metering device restrictor such as Imperial liquid low side charger model 535 C or Watsco ChargeFaster model CH200 is recommended when adding refrigerant to an operating system This prevents potential damage of liquid slugging of the compressor and allows the subcooling to stabilize quicker Charging using the subcooling method optimizes charge volume and is preferred if possible If the outdoor temperature is between 65 F 100 F 18 3 C 37 8 C and indoor temperature is 70 F 80 F 21 1 C 26 7 C the option to further adjust charge using service valve subcool will be ava
43. suction line temperature OST located between the reversing valve and the accumulator A 50Kohm thermistor is used to sense discharge temperature ODT Refer to Table 4 and Fig 28 and 29 for resistance values versus temperature Table 4 10K 50Kohm Resistance Values vs Temperature 10Kohm C F TEMPERATURE RESISTANCE ohms 25 0 77 0 10 0 2 3 0 0 32 0 32 6 3 2 28 0 18 4 85 5 3 4 50Kohm 125 0 257 0 1 7 1 6 75 0 167 0 7 40 2 0 25 0 77 0 50 0 2 3 THERMISTOR CURVE 90 80 70 60 50 40 30 20 0 20 40 60 80 100 120 TEMPERATURE DEG F RESISTANCE KOHMS A91431 Fig 28 10K Thermistor Resistance Versus Temperature 50K THERMISTOR I U1 o 400 N Ww UW no ui O O O m vi eo a L O Lu S 200 t o Lu ec n wu O O O TEMPERATURE F A14022 Fig 29 50K Thermistor Resistance Versus Temperature If the outdoor air or coil thermistor should fail the control will flash the appropriate fault code see Table 6 IMPORTANT The outdoor air thermistor coil thermistor and suction thermistor should be factory mounted in the final locations Check to ensure thermistors are mounted properly See Fig 30 31 32 and 33 Catalog No II189BNV 04 Manufacturer reserves the right to change at any time specifications an
44. t use Meggar for measuring the winding resistance A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage and or improper operation To maintain water integrity of the compressor fusite terminal box the two holes in outer ring need to be full of RTV sealant Fan Motor If verification of proper operation is required for the fan motor used in this unit follow these steps 1 Disconnect fan motor connector from control board 2 Measure resistance between any 2 of the 3 leads present 3 Compare measurement to values below Fan Motor Resistance Unit Size Resistance Ohms 13 24B 21 2 24A 25 36 37 48 49 60 11 1 Status Codes Table 6 shows the status codes flashed by the amber status light Most system problems can be diagnosed by reading the status code as flashed by the amber status light on the control board The codes are flashed by a series of short and long flashes of the status light The short flashes indicate the first digit in the status code followed by long flashes indicating the second digit of the error code The short flash is 0 25 seconds ON and the long flash is 1 0 second ON Time between flashes is 0 25 seconds Time between short flash and first long flash is 1 0 second Time between code repeating is 2 5 seconds with LED OFF Codes are easily read from user interface UI EXAMPLE 3 short flashes followed by 2 long flashes indi
45. tance between YEL to RED YEL to BLK and RED to BLK and compare to Table 5 values Each resistance set should be equal 3 Measure the resistance to ground for each lead 4 If the resistances check out reconnect power leads to appropriate terminal 5 If the resistances appear to be abnormal it will be necessary to measure the resistance at the compressor fusite terminals 6 During the removal of the compressor fusite cap do not re move the RTV sealant Remove the harness plug measure the resistances and compare to Table 5 7 Special care will need to be taken with the replacement of the compressor fusite cap Make sure the two holes in the compressor fusite terminal box are still full of RTV sealant before the cap is reinstalled The factory RTV can be reused as long as none of it has been removed during the cap removal 8 Reinstall compressor sound blanket making sure discharge thermistor and compressor power harness are routed as they were from the factory Table 5 Variable Speed Compressor Resistance winding resistance at 70 F 20 F MODEL 189BNV OHMs WINDING 24A 13 24B 25 36 37 48 49 60 Between terminals 99 1 13 59 59 37 24 Between terminal amp gt 1 mega ground 8 24Aunit height is 38 7 16 and 24B unit height is 31 5 8 A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage and or improper operation Do no
46. tight Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Step 7 Make Electrical Connections A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Do not supply power to unit with compressor terminal box cover removed Be sure field wiring complies with local and national fire safety and electrical codes and voltage to system is within limits shown on unit rating plate Contact local power company for correction of improper voltage See unit rating plate for recommended circuit protection device NOTE Operation of unit on improper line voltage constitutes abuse and could affect unit reliability See unit rating plate Do not install unit in system where voltage may fluctuate above or below permissible limits NOTE Use copper wire only between disconnect switch and unit NOTE Install branch circuit disconnect of adequate size per NEC to handle unit starting current Locate disconnect within sight from and readily accessible from unit per Section 440 14 of NEC Route Ground and Power Wires Remove access panel to gain access to unit wiring Extend wires from disconnect through power wiring hole provided and into unit control box A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death The unit cabinet must have an uninterrupted or unbrok
47. to follow this caution may result in equipment damage and or improper operation Do not attempt to apply line voltage directly to the compressor This will destroy the compressor Field control Connections For communicating operation use the communication Evolution plug only Only two wires AB color are required If necessary connect C for additional grounding see Fig 6 If using standard 2 stage thermostat connect discrete inputs R C Y2 Y1 for 2 stage control in cooling modes Pressure Transducer SPT A 5 VDC output low pressure transducer that provides a 0 5 VDC data for interpretation by the control board for a O to 200 psig range of pressure at the suction tube This interpreted pressure data is then intelligently used by the AOC control board for low pressure cut out loss of charge management compressor protection oil circulation management and lubrication management Pressure Equalizer Valve PEV At the end of every compressor operation after the 3 5 minute Time Guard period the equalizer valve opens for 150 seconds plus an additional 15 seconds of protection before allowing the compressor to start ramping up The PEV is located next to the suction and discharge of the compressor The function of this valve is to prevent the compressor from starting with a high refrigerant pressure differential thus helping the reliability of the compressor NOTE A hissing sound may be heard during the equalization pro
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