Bryant 664B Heat Pump User Manual
Contents
1. FIELD 5 SUPPLY POWER ZS YeL GRW 7 DR DB 208 230 1 60 UNIT ONLY BLK BLK OFDJAXOFZ BLK MAXIMUM WIRE LN OFM SIZE 2 AWG YEL 23 23 YEL CAP2 r1 L 8RN 77 H c F EQUIP_GND PLUG e L COMP SOLENOID YEL YEL BLK BLU 5 YEL 2 a FOR WIRING WITH B ELECTRIC HEATERS 27 GND SEE SCHEMATIC ul 52 1 4 ON HEATER ACCESSORY ZA BLK 030 200 IFM 4 4 SEE NOTE 6 L BRN TRANI 3 2 123145 _ MANUAL RESET Ej 4 mm oe BRN Te mimo II Oy iud DEFROST BOARD 081 ws toot DR 0 BLK BRN 1 F T oa Ct2. FIELD cai SCHEMATIC SUPPLY 3 POWER ZN DR DB 208 230 3 60 BLK TH Ket BLK OF 1 OF 2 BLK MAXIMUM WIRE Ey OFM SIZE 2 AWG YEL P dd LN POWER lt or Pern 177 BLU a f PLUG EQUIP_GND YEL R e als YEL BLU BLK FOR WIRING WITH A ELECTRIC HEATERS T GRN YELU SEE SCHEMATIC A YEL GND ON HEATER ACCESSORY Hh Y i 8iK 3 Co Pc COM IFM SEE NOTE 6 BRN TRAN1 3 2 AMP SEE NOTE 4 12345 MANUAL RESET 4 BRN CB RE RED x DEFROST BOARD DB RVS a DR 0 BLK ry BRN en A LE BLU LT z CTD BRN Li g z GRN wit DFT 0 PNK PNK Un E e Qt BLU LPs BLU R CR R RED T i T Y Ty Y YEL C a a 0 ORN W2 WHT 4 a ACCESSSORY ELECTRIC E T HRI 5 KW BRN Aa jJ
3. FIELD cen SCHEMATIC SUPPLY POWER BLK C DR DB 208 230 3 60 UNIT ONLY BLK BLIO DH OF BLK MAXIMUM WIRE LN f QEM SIZE 2 AWG e YEL H23 YEE YEL CAP2 Z_ POWER aii x BRN a PLUG EQUIP GND O 7 COMP SOLENOID o YEL R K E BLU BLK FOR WIRING WITH WATT TTT ELECTRIC HEATERS T YEL GRN YELU 12 SEE SCHEMATIC 1 1 GNDI r 7 Te m ON HEATER ACCESSORY nam aa L1 La 1 sk 9 Cor COM IFM 2 DAC SEE NOTE 6 BRN TRANI 3 2 12345 MANUAL RESET mmi c Da Lu e O 5 1 BRN wit Li RED x imme DEFROST BOARD 08 Em DR BLK BRN liL Oe oH OH eO Li 5 a lt LT CTD BRN 2 e Lies HPs G GRN a C DFT 0 PNK PNIA 929 2 sce De CS poe BLU LPs BLU E R R R RED i T Y Y BLK Y y1 EL E C 4 BLK 0 ORN n t ACCESSSORY ELECTRIC HEAT 5 EN 11 HRI 5 an BRN FH 21 t WHT S BRN HR1 2 3 8 4 20
4. SUCTION LINE TEMPERATURE Suction Line Pressure PSIG nus 52 54 56 59 61 64 67 70 73 76 79 82 85 89 92 45 51 55 60 64 69 55 53 57 62 66 70 65 53 57 62 66 71 75 75 56 61 66 71 76 85 53 58 63 67 72 95 50 54 58 62 66 105 50 53 57 60 64 115 49 52 55 58 61 125 50 53 56 59 SUCTION LINE TEMPERATURE Suction Line Pressure kPa OD Temp 361 370 387 405 423 442 462 482 502 523 544 566 589 612 636 7 11 13 15 18 21 13 12 14 16 19 21 18 12 14 17 19 21 24 24 13 16 19 22 24 29 12 14 17 20 22 35 10 12 14 17 19 41 10 12 14 16 18 46 9 11 13 14 16 52 10 11 13 15 MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure periodic maintenance must be performed on this equipment This unit should be inspected at least once each year by a qualified service person To troubleshoot unit refer to Troubleshooting Chart in back of book NOTE TO EQUIPMENT OWNER Consult your local dealer about the availability of a maintenance contract 4 WARNING PERSONAL HAZARD INJURY AND UNIT DAMAGE Failure to follow this warning could result in personal injury or death and possible unit component damage The ability to properly perform maintenance on this equipment requires certain expertise mechanical skills
5. 2 the indoor fan energizes immediately whereas the contactor energizes after a 5 minute time delay in case of initial start up starting the compressor and the outdoor fan motor When the cooling demand is met Y Y2 de energizes shutting the compressor indoor fan and the outdoor fan COOLING OPERATION SIZES 048 AND 060 These units utilize a 2 stage indoor thermostat With a first stage call for cooling Y1 the indoor fan low stage energizes immediately whereas the contactor energizes after a 5 minute time delay in case of an initial start up starting the compressor low stage and the outdoor fan motor If the low stage operation cannot satisfy the cooling demand the second stage cooling Y2 energizes switching the compressor into high stage cooling through energizing an internal solenoid valve inside the scroll compressor and switching the indoor fan into high stage When second stage cooling is satisfied Y2 de energizes switching the compressor and the indoor fan into low stage cooling When the low stage cooling demand is met Y1 de energizes shutting the compressor indoor fan and the outdoor fan HEATING OPERATION SIZES 024 042 With a call for heating Y1 the indoor fan low stage energizes immediately whereas the contactor energizes after a 5 minute time delay in case of initial start up starting the compressor and the outdoor fan motor If Y Y2 cannot satisfy the heating demand the auxiliary or backup heat W
6. L1 L2 L2 L3 Compressor Amps L1 C L2 S Outdoor Fan Amps Indoor Fan Amps TEMPERATURE Cooling Mode Outdoor Air Temperature DB Return Air Temperature DB Cooling Supply Air DB PRESSURES Cooling Mode Refrigerant Suction psig Suction Line Temp Refrigerant Discharge psig Discharge Tempt TEMPERATURE Heating Mode Outdoor Air Temperature DB Return Air Temperature DB Cooling Supply Air DB PRESSURES Heating Mode Refrigerant Suction psig Suction Line Temp Refrigerant Discharge psig Discharge WB WB Verify Refrigerant charge using charging tables Measured at suction inlet to compressor TMeasured at liquid line leaving outdoor coil 13 11 L3 R WB WB WB WB 2008 Bryant Heating amp Cooling Systems e 7310 W Morris St e Indianapolis IN 46231 Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Printed in U S A 22 Edition Date 08 08 Catalog 11664804 Replaces 664 24 3
7. T 4 LOGI E x a ENE I4 i CTD BRN z e telco 6 GRN 1061 2 c PNK LH C E Qr BLU LPs BLU e E R RED rit Y BLK Y1 YEL 4 F BLK 0 ORN W2 WHT _ Jee E EE ACCESSSORY ELECTRIC HEAT BO OD EN Cones z HRI 5 BRN FH a WHT BRN ij HR1 2 3 8 4 20 KW BRN Y2 PNK er E amp 90 SECOND er mel Vig HRI amp 2 10 KW BRN PNK 1 2 8 3 015 35 110 73 BRN 25 DIP SWITCH SETTINGS DEFAULT 30 MINUTES 60 MINUTES 90 MINUTES 120 MINUTES C BRN 123 113 123 LEGEND EL IK DEFAULT A FIELD SPLICE FIELD SELECTABLE OPTIONS FOR TIME PERIOD MARKED E COM TOR THE COMPRESSOR WILL SHUT OFT FOR 30 SEC ON DEFROST UNIT COMPONENT ARRANGEMENT 9 TERMINAL UNMARKED CAP ERAT BREAKER INITIATION AND TERMINATION N THE OVIE SHIFT ON OUTDOOR FAN CONTROL BOX AREA SPLICE MARKED Cup COMPRESSOR MOTOR SPEED JUMPERED TEST PINS USE METAL OBJECT SECTION OFM FACTORY WIRING CTD COMPRESSOR TIME DELAY v FIELDSPEEDSUP CTCLE san DZ82 TRAN FIELD CONTROL WIRING 08 DEFROST BOARD 1 MOMENTARILY SHORT PINS AND RELEASE TO BYPASS 27 5825 IT FIELD POWER WIRING DET DEFROST THERNOSTAT di SHORT FOR 9 SEC AND RELEASE FOR FORCED DEFROST z a ACCESSORY OR OPTIONAL aer 3 PERMANENT SHORT WILL IGNORED E 55 10 INDICATE 00 EUER
8. 0 063 0 070 0 073 CONDENSER COIL Copper Tubes Aluminum Plate Fins Rows Fins in 2 21 2 21 2 21 2 21 2 21 2 21 Face Area sq ft 11 1 12 7 15 8 15 8 13 3 15 8 CONDENSER FAN Propeller Nominal Cfm 2600 2600 3200 3200 3200 3300 Diameter in 20 20 20 20 20 20 mm 508 508 508 508 508 508 Motor HP RPM 1 8 825 1 8 825 1 4 1100 1 4 1100 1 4 1100 1 2 1100 EVAPORATOR COIL Copper Tubes Aluminum Plate Fins Rows Fins in 3 17 3 17 4 17 4 17 4 17 4 17 Face Area sq ft 4 8 4 9 4 9 6 1 4 9 6 1 Evaporator blower Direct Drive Nominal Airflow Cfm 800 1000 1200 1400 1600 1875 Size in 10x8 11x9 11x10 mm 254 x 203 279 x 229 279 x 254 Motor HP RPM 1 2 1050 1 2 1050 3 4 1050 3 4 1050 1 1050 1 1050 CONNECTING DUCT SIZES Round Supply Air in 14 mm 356 Return Air in 14 mm 356 Return Air Filters Throwaway in 24 x 24 24 x 30 30 x 30 mm 610 x 610 610 x 762 762 x 762 Required filter sizes shown are based on the ARI Air conditioning amp Refrigeration Institute rated airflow at a velocity of 300 ft min 91 m for throwaway type or 450 ft min 137 m for high capacity type Recommended filters are 1 in 25 mm thick 664B Table 2 Minimum Airflow for Safe Electric Heater Operation Unit Size Minimum Airflow CFM 5kW 7 5kW 10kW 15kW 20kW 024 500 650 750 030 600 800 1050 036 600 800 1050 1150 1200 042 600 800 1050
9. L 1 Y Y Y YEL 0 ORN W2 WHT 4 j ACCESSSORY ELECTRIC HEAT 8 EN ART 5 BRN MD WHT BRN 1 HR1 2 3 amp 4 20 KW BRN 2 GRY E Ge E0 SECOND jut arr me vis B 2 10 KW BRN 7 PNK RJO T 1 HR1 2 8 3 15 KW 2 W3 V10 74 BRN DIP SWITCH SETTINGS DEFAULT 30 MINUTES 60 MINUTES 90 MINUTES 120 MINUTES C BRN 1123 123 12 19873 123 M ul il OR OR OR SHIFT LEGEND To DEFAULT FIELD SPLICE IELD SELECTABLE OPTIONS FOR TIME PERIOD WEEN LES MINUTES UNIT COMPONENT ARRANGEMENT TERMINAL MARKED SOME s THE COMPRESSOR WILL SHUT OF FOR SEC ON DEFROST o TERMINAL CAPACITOR INITIATION AND TERMINATION IW THE OUIET SHIFTS ON OUTDOOR FAN og CONTROL BOX AREA o SPLICE CCH CRANK CASE HEATER POSITION SECTION are SPLICE MARKED COMPRESSOR MOTOR sotto JUNPERED TEST PINS USE METAL OBJECT 258 TRAN gt FACTORY WIRING CTD COMPRESSOR TIME DELAY v POA SPEED UP CTCL nozza o FIELD CONTROL WIRING 08 DEFROST BOARD TH SHORT BINS AND RELEASE TO BYPASS ESR 85 zx FIELD POWER WIRING DET THERMOSTAT 2 SHORT FOR 5 SEC AND RELEASE FOR FORCED DEFROST mar 8 2 2 ACCESSORY OR OPTIONAL nS DAR 3 PERMANENT SHORT WILL BE IGNORED mm DEFROST FAN INDICATE COMMON 00 REM RELAY DEFROST WILL TERMINATE NORMALLY ir DFT IS CLOSED BOARD CONTROL
10. RELAY DEFROST WILL TERMINATE NORMALLY ir DFT IS CLOSED BOARD CONTROL NOT TO REPRESENT WIRING bs EAN MOTOR BOARD HPS HIGH PRESSURE SWITCH OFM OUTDOOR FAN MOTOR 1 RYS REVERSING VALVE SOLENOID coo TRAN TRANSFORMER DFT NOTES 1 IF ANY OF THE ORIGINAL WIRES FURNISHED ARE REPLACED CTD T1 T2 COMP EQUIP IT MUST BE REPLACED WITH TYPE 90 DEGREE C WIRE OR SEGIENCE LPS GND IT S EQUIVALENT 2 SEE PRICE PAGES FOR THERMOSTAT AND SUBBASES 0 T 1 90 0 5SEC T T45 MIN DISCONNECT 3 USE 15 DEGREE COPPER CONDUCTORS FOR FIELD INSTALLATION 6 6 a RVS PER NEC 1 RELOCATION OF SPEED TAPS MAY REOUIRED ENERGIZED DE ENERGIZED CLOSES WHEN USING FIELD INSTALLED ELECTRIC HEATERS TSAT OPENS FIELD CONSULT INSTALLATION INSTRUCTIONS TO HPS 5 SUPPLIED DETERMINE CORRECT SPEED TAP SETTING R CCH 5 DO NOT DISCONNECT PLUG UNDER LOAD 24V SPLICE pay POWER ENTRY BOX 50ZH500374 10 0 A06405 Fig 14 Typical Single Phase Unit Electrical Diagram Sizes 048 060 12
11. WHT BRN T mmm HR1 2 3 8 4 20 KI BRN T1 2 en Y 1000 berar I vio TT HRI 8 2 10 KW BRN t H PNK mi 1 HR1 2 8 3 15 KW 1 W3 V107 BRN DIP SWITCH SETTINGS DEFAULT 30 MINUTES 60 MINUTES 90 MINUTES 120 MINUTES C BRN 472 123 123 123 i Ll i ul ill M LEGEND DU erent M TERMINAL MARKED INT AC YCL IU CAPACITOR THE COMPRESSOR WILL SHUT OFF FOR 30 SEC ON DEFROST UNIT COMPONENT ARRANGEMENT 5 MAE UNMARKED EN CIRCUIT BREAKER INITIATION AND TERMINATION IN THE SHIFT ON Rum ELT Diae me 588 258 FIELD CONTROL WIRING DB DEFROST BOARD 13 MOMENTARILY SHORT PINS AND RELEASE TO BYPASS S92 FIELD POWER WIRING DFT DEFROST THERMOSTAT ais 2 4 ACCESSORY OR OPTIONAL DEFROST RELAY np pcr pe medo os os 3 27 10 INDICATE COMMON MRO MEATER RELAY DEFROST WILL TERMINATE NORMALLY IF DFT Is CLOSED DEFROST FAN POTENTIAL ONLY IFM INDOOR FAN MOTOR BOARD CONTROL NOT TO REPRESENT WIRING ps LOW PRESSURE SWITCH BOARD HPS HIGH PRESSURE SWITCH OFM OUTDOOR FAN MOTOR HPS 1 RVS REVERSING VALVE SOLENOID l p TRAN TRANSFORMER DFT NOTES IF ANY OF THE ORIGINAL WIRES FURBHED ARE REPLACED CTD T1 T2 COMPRESSOR DELAY COMP EQUIP 11 MUST BE REPLACED WITH TYPE 90 DEGREE C WIRE OR PAN SEQUENCE LPS GND 11 5 EQUIVALENT 2 SEE PRICE PAGE
12. could result in personal injury or death Disconnect and tag electrical power to the unit before cleaning and lubricating the blower motor and wheel To clean the blower wheel 1 Remove the blower housing a Remove the screws on the external side of the duct panel that fasten the housing to the duct panel assembly b Remove the side access panel and unscrew the mounting bracket that fastens the blower housing to the internal partition panel fo the control box assembly c Make sure that the blower housing is supported by hand before completely removing the mounting bracket d Slide the blower housing from the rails of the duct panel and place it outside the unit 2 Remove the blower wheel from the housing a Loosen the set screw which secures the wheel to the motor shaft b Loosen the three mounting legs of the motor by removing the bolts that fasten themounting legs to the housing c Slide out the motor assembly motor belly band and the 3 mounting legs from the hub of the wheel d Remove the filler panel at the discharge end of the blower housing by removing the two screws that fasten it to the housing e Remove the wheel form the housing Remove the caked on dirt from the wheel and the motor using a brush Remove lint and dirt accumulations from the wheel and housing with a vacuum cleaner using a soft brush attachment 5 Remove grease and oil with a mild solvent 6 Reassemble a Slip
13. liquid line check valve It is then condensed C and directed through subcooling circuits and out to the strainer the check valve and the check valve in the heating liquid line 2 The refrigerant then feeds the outdoor coil through the Acutrol metering device on each circuit Fig 20 Typical Heat Pump Operation Heating Mode 3 Each circuit evaporates the refrigerant and the circuits are com bined in the outdoor header with some ofthe circuits flowing through 4 The refrigerant then flows through the 4 way valve accumulator and back to the compressor OUTDOOR COIL INDOOR COIL 8 Y 5 3 5 5 5 g i 5 k c M 5 Q T _ Check Valves A Closed B Open C Closed D Open LEGEND LCS Loss of Charge Switch 1 Metering Device Check Valve Arrow indicates direction of flow COOLING CYCLE 1 Hot gas from compressor flows through the 4 way valve and is directed to the heating liquid line check valve It is then con densed and subcooled through converging circuits Refrigerant leaves the outdoor coil by way of the strainer and the check valve in the 2 The refrigerant then feeds the indoor coil through the Acutrol metering device on each circuit Fig 21 Typical Heat Pump Operation Cooling Mode 20 3 Each circuit evaporates the refr
14. mm A08003 Fig 2 Area Not to be Drilled More Than 3 4 in 19 mm Deep 1 All units should have field supplied filters or accessory filter rack installed in the return air side of the unit Recommended sizes for filters are shown in Table 1 2 Avoid abrupt duct size increases and reductions Abrupt change in duct size adversely affects air performance IMPORTANT Use flexible connectors between ductwork and unit to prevent transmission of vibration Use suitable gaskets to ensure weather tight and airtight seal When electric heat is installed use fireproof canvas or similar heat resistant material connector between ductwork and unit discharge connection If flexible duct is used insert a sheet metal sleeve inside duct Heat resistant duct connector or sheet metal sleeve must extend 24 in 610 mm from electric heater element 3 Size ductwork for cooling air quantity cfm The minimum air quantity for proper electric heater operation is listed in Table 2 Heater limit switches may trip at air quantities below those recommended 4 Seal insulate and weatherproof all external ductwork Seal insulate and cover with a vapor barrier all ductwork passing through conditioned spaces Follow latest Sheet Metal and Air Conditioning Contractors National Association SMACNA and Air Conditioning Contractors Association ACCA minimum installation standards for residential heating and air conditioning systems 5 Secure all du
15. short cycling Low refrigerant charge Determine cause and correct Check for leaks repair and recharge Restriction in liquid tube Remove restriction Excessive suction pressure High Heat load Check for source and eliminate Reversing valve hung up or leaking internally Replace valve Refrigerant overcharged Recover excess refrigerant Suction pressure too low Dirty air filter Replace filter Low refrigerant charge Check for leaks repair and recharge Metering device or low side restricted Remove source of restriction Insufficient coil airflow Check filter replace if necessary Temperature too low in conditioned area Reset Thermostat setting Outdoor ambient below 55 F 13 Install low ambient kit Filter drier restricted Replace 21 664B I PRELIMINARY INFORMATION hn MD Serial No II PRE START UP START UP CHECKLIST REMOVE AND STORE IN JOB FILE Verify that all packing materials have been removed from unit Verify that condensate connection is installed per installation instructions Check all electrical connections and terminals for tightness Check wire proximity to refrigerant tubes and sheet metal edges Check that indoor indoor air filter is clean and in place Verify that unit installation is level Check fan wheel propeller for location in housing and setscrew tightness START UP Supply Voltage
16. the wheel back in the housing with the hub set screw parented in the correct direction b Install the filler panel c Reinsert the motor assembly in the wheel hub and align the mounting legs with the housing mounting hold locations d Tighten the mounting bolts to fasten the motor assembly with the housing e Center the wheel in the housing by sliding it align the flat end of the shaft with the set screw and tighten the set screw f Slide back the blower housing into the mounting rails in the duct panel and install the mounting bracket back in its position g Install the screws on the external side of the duct panel to fasten duct panel with the housing h Replace the side access panel Table 6 Wet Coil Pressure Drop UNIT STANDARD CFM S C F M SIZE 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 024 027 034 040 047 053 E i E 030 036 042 050 055 063 072 081 036 050 055 063 072 081 090 097 E E 042 042 049 052 059 065 071 078 085 091 E 048 E 072 081 090 097 108 120 129 139 060 071 078 085 091 098 114 Table 7 Filter Pressure Drop in wc FILTER CFM SIZE in UNIT SIZE wmm 500 600 700 800 900 10
17. twice during each cooling season and twice during the heating season or whenever the filter becomes clogged with dust and lint Step 2 Unit Top Removal NOTE When performing maintenance or service procedures that require removal of the unit top be sure to perform all of the routine maintenance procedures that require top removal including coil inspection and cleaning and condensate drain pan inspection and cleaning 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Disconnect and tag electrical power to the unit before removing top 17 664B Only qualified service personnel should perform maintenance and service procedures that require unit top removal Refer to the following top removal procedures 1 Remove screws on unit top cover surface Save all screws 2 Remove screws on unit top cover flange Save all screws 3 Lift top from unit carefully Set top on edge and make sure that top is supported by unit side that is opposite duct or plenum side 4 Carefully replace and secure unit top to unit using screws removed in Steps 1 and 2 when maintenance and or service procedures are completed Step 3 Indoor Blower and Motor For longer life operating economy and continuing efficiency clean accumulated dirt and grease from the blower wheel and motor annually 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning
18. 0 2222 EH pO TRUE 551224 928019 186760 86 10 62 13944 55122 1102 NOOQNI ANY 7081802 80551844802 189 621 6661 401 i NI Juv NI SNOISNJHIQ LINN 40 WOLLOG 1661 62219 1 ON 53810038 3QVOIUNVG 22821 FIGVAONIY JONVHOSIO NOOQlhO NOUS YTV 10 NOTLVINDYIDIY INJAJUd 01 QJNIVINIVH 38 1504 S22NYUV12 110N SININFYINOIY JIN 1d32X1 000 1 0rBgE cio ee esee ses AYINI YIKOd HLIM LINN 30 3015 1002061 07291 SONINIdO LING 31150440 LINN 10 1015 114405 EN T QE Nn 50 305 NI SYILINITIIN J ONIJIAES 12 00201 8 990 7770700000000 79 1015 AYINI YINOd 512 1805 030840089 LINN 30 WOLLOG W3H10 ONY S1IYM NO 2018 ONY LINN 86 091 1007961 02016 3015 AYINI YIMOd 532 38405 G3ONNOYONN ONY LINN E 0 00 2h 8990 7770700070077 JOIS AYINI YJMOd SLINN NIINLIG NI SYILINITIIN SSONVUVSTO IIN 0 SONINIdO 1200 31150440 LINN 30 3015 0 SNINGdO 1200 LINN 20 3018 Pe Ee eee ea rey QU LINN 40 401 19561 6 12 87 0 61 195 0 vi 01011 161 09 1 0 2 802 0908799 NI SYJLINITIIN 06 8 61 89 0 61 1956101 Cool ev sit vee 09 1 0 2 802 8708799 37815180 OL SSINVEVSTO 966 6 12 reer 0 61 9561071 101011 LLL 685 09 1 0 2 802 27087
19. 00 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 024 036 24 24 006 0 07 0 08 0 08 0 09 0 09 0 09 010 041 0 12 0 14 015 610 610 042 060 _20 30 0 08 0 09 0 10 0 11 10 12 0 13 10 14 0 15 016 0 17 10 18 762 762 Table 8 Accessory Electric Heat Pressure Drop wc HEATER CFM kW 600 800 1000 1200 1400 1600 1800 2000 2200 5 20 0 06 0 08 0 10 0 13 0 15 0 18 0 20 0 23 0 25 18 Step 4 Outdoor Coil Indoor Coil and Condensate Drain Pan Inspect the condenser coil evaporator coil and condensate drain pan at least once each year The coils are easily cleaned when dry therefore inspect and clean the coils either before or after each cooling season Remove all obstructions including weeds and shrubs that interfere with the airflow through the condenser coil Straighten bent fins with a fin comb If coated with dirt or lint clean the coils with a vacuum cleaner using the soft brush attachment Be careful not to bend the fins If coated with oil or grease clean the coils with a mild detergent and water solution Rinse coils with clear water using a garden hose Be careful not to splash water on motors insulation wiring or air filter s For best results spray condenser coil fins from inside to outside the unit On units with an outer and inner condenser coil be sure to clean between the coils Be sure to flush all dirt and debris from the unit base Ins
20. 1150 1200 048 600 800 1050 1150 1200 060 600 800 1050 1150 1200 Step 7 Install Electrical Connections 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death The 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 an electrical wire connected to the unit ground screw in the control compartment or conduit approved for electrical ground when installed in accordance with NEC ANSI NFPA 70 American National Standards Institute National Fire Protection Association latest edition in Canada Canadian Electrical Code CSA C22 1 and local electrical codes 4 CAUTION UNIT COMPONENT DAMAGE HAZARD Failure to follow this caution may result in damage to the unit being installed 1 Make all electrical connections in accordance with NEC ANSI NFPA 70 latest edition and local electrical codes governing such wiring In Canada all electrical connections must be in accordance with CSA standard C22 1 Canadian Electrical Code Part 1 and applicable local codes Refer to unit wiring diagram Use only copper conductor for connections between field supplied electrical disconnect switch and unit DO NOT USE ALUMINUM WIRE Be sure that high voltage power to unit is within operating voltage range indicated on unit rating plate On 3 pha
21. 2 energizes In case of staged heating W3 is energized if the demand is not met The highest airflow selected is run while the electric heat is in operation When heating demand is met W3 W2 and Y Y2 sequentially de energize shutting the compressor indoor fan and the outdoor fan HEATING OPERATION SIZES 048 AND 060 With a first stage call for heating 1 the indoor fan low stage energizes immediately whereas the contactor energizes after a 5 minute time delay in case of initial start up starting the compressor low stage and the outdoor fan motor If the low stage oepration cannot satisfy the heating demand the second stage heating Y2 energizes switching the compressor into high stage heating through energizing an internal solenoid valve inside the scroll compressor and switching the indoor fan into high stage The auxiliary or backup heat is controlled by a third stage W2 If the demand is not met W3 is energized in case of staged heating When heating demand is satisfied W3 W2 and Y2 sequentially de energize switching the compressor and the indoor fan into low stage heating When the low stage heating demand is met Y1 de energizes shutting the compressor indoor fan and the outdoor fan CONTINUOUS FAN With the continuous Indoor fan option selected on the thermostat G is continuously energized In case of 024 042 units the selected airflow setting is provided In case of 048 and 060 units the system runs low stage
22. 3 245 254 266 276 289 2 CFM 1164 1122 1066 1025 954 906 043 Watts 386 398 409 418 425 435 438 441 451 Ex 1680 1652 1625 1588 1555 1515 1477 i444 1403 Watts 440 448 457 462 469 477 480 485 486 CFM 2 1745 1717 1684 1651 1612 1573 1587 1508 1470 Watts 224 285 251 266 277 201 298 1334 1288 1259 1224 1181 1157 1117 m Watts 286 301 311 325 333 844 870 Ex 2 CFM SE 1888 1296 1261 1232 1199 1170 1062 060 Watts 608 626 643 660 668 685 697 s CFM 1981 1900 1878 1844 1817 1789 1755 Watts 737 755 770 787 799 817 826 812 782 4 CFM 2093 2061 2028 2001 1971 1934 1899 1850 1757 Air delivery values are based on operating voltage of 230v wet coil without filter electric heater Deduct filter and electric heater pressure drops to obtain static pressure available for ducting NOTES 1 Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12 000 Btuh of rated cooling capacity Evaporator coil frosting may occur at air flows below this point 2 Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended 16 Table 5 Cooling Charging Chart
23. 664B 13 SEER SINGLE PACKAGED HEAT PUMP SYSTEM WITH R 22 REFRIGERANT SINGLE AND THREE PHASE 2 5 NOMINAL TONS SIZES 024 060 Installation Instructions NOTE Read the entire instruction manual before starting the installation TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS 2 INTRODUCTION ii em RELIER 2 RECEIVING AND INSTALLATION 2 7 Check Equipment 22m ek a cae dew a 2 Identity Unt 23 ete ep REUS Gey ER RIEN 2 Inspect Shipment ne ree hee 2 Provide Unit Support 2 Slab Mount ek nk t kr s 2 Ground Mount 2 22 22 2 2 Provide Clearances 2 Place Un Sa ea 2 Select and Install 2 Configuring Units for Downflow Vertical Discharge 3 Connect Condensate Drain 3 Install Electrical Connections 6 High Voltage Connections 6 Routing Power Leads Into 6 Connecting Ground Lead to Unit Ground 6 Routing Control Power Wires 6 Accessory Electric Heat Wiring 6 PRE START UP 7 START UP ec ek DRE REDUCE Ga eae ee 8 17 Check for Refrigerant Leaks 8 Start Up Cooling and Make Ad
24. 99 06 861 00 0761 195 O vi 10101 ut LLE 09 1 0 2 802 95209299 900 0 91 89 0 61 9961 0 vi 11981 clive vec 09 1 0 2 802 0608799 18 0 51 80 0 61 9661071 15911 eroe eel lt 62 09 1 0 2 902 7208799 1 A x Y ow 81 SILLSIYILIVYYHI Tinn NI WA ALIAVHO 40 831832 1H9IJH_LINN IM LINN 21115113 gr99 3015 1331 A08414 664B024 060 imensions Fig 5 Unit Base D INDOOR THERMOSTAT AMENS Power Wiring Control Wiring Condenser Airflow Evaporator Airflow IN DISCONNECT PER NEC UNIT AND ELECTRIC HEATER CONDENSATE DRAI CONNECTION 08207 Fig 6 Typical Installation Table 1 Physical Data UNIT SIZE 024 030 036 042 048 060 NOMINAL CAPACITY ton 2 2 1 2 3 3 1 2 4 5 OPERATING WEIGHT Ib 293 324 377 389 384 433 kg 133 147 171 176 174 196 COMPRESSOR Scroll Ultra Tech Scroll REFRIGERANT R 22 Quantity Ib 7 5 10 3 10 3 11 9 11 4 13 3 kg 3 4 4 7 4 7 5 4 5 2 6 0 REFRIGERANT METERING DEVICE AccuRater TXV Orifice ID in 0 067 0 067 0 082 0 086 Orifice OD in 0 049 0 057 0 059
25. Circuit lees 20 Indoor 2222222 2222 4 20 Metering Devices 2 2 22 4 20 Liquid Line 20 High Flow Valves 20 TROUBLESHOOTING 20 START UP CHECKLIST 20 664B SAFETY CONSIDERATIONS Installation and servicing of this equipment can be hazardous due to mechanical and electrical components Only trained and qualified personnel should install repair or service this equipment Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters All other operations must be performed by trained service personnel When working on this equipment observe precautions in the literature on tags and on labels attached to or shipped with the unit and other safety precautions that may apply Follow all safety codes Installation must be in compliance with local and national building codes Wear safety glasses protective clothing and work gloves Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Recognize safety information This is the safety alert symbol A When you see this symbol on the unit and in instructions or manu als be alert to the potential for personal injury Understand these signal words DAN
26. GER 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 per sonal injury or death CAUTION is used to identify unsafe practic es which may result in minor personal injury or product and prop erty damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before installing or servicing system always turn off main power to system and tag There may be more than one disconnect switch Turn off accessory heater power switch if applicable 4 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 clothing INTRODUCTION The 664B packaged heat pump is fully self contained and designed for outdoor installation See Fig 1 Standard units are shipped in a horizontal discharge configuration for installation on a ground level slab or directly on the ground if local codes permit Standard units can be converted to downflow vertical discharge configurations for rooftop applications with a field supplied plenum RECEIVING AND INSTALLATION Step 1 Check Equipment IDENTIFY UNIT The unit model nu
27. IZE 2 AWG 1 YEL 23 03 YEL us BRN ITI EQUIP_GND HI c F OMPRESSOR PLUG e ey YEL YEL D BLK BLU HKO FOR WIRING WITH Aen 1 YEL gt lt ELECTRIC HEATERS 14 7 2 SEE SCHEMATIC ma GRN YELL L2 ON HEATER ACCESSORY fees x n E 200 f IFM SEE NOTE 6 BRN TRAN 3 2 AMP SEE NOTE 4 12345 MANUAL RESET Qay C BRN CB RE o RED DEFROST BOARD DB 1 RVS DR 0 8LK AN BRN OFT 61 02 NA 1061 CTD BRN Leo I 6 GRN 7 1067 OFT C PNK ey PNK W Wo m CES D BLU x BLU LPS CR R R RED T
28. KW BRN p cun Y2 PNK 1 M Gay eun b 90 SECOND rir VIO BRN HRI amp 2 10 KW BRN PNK mi HR1 2 8 3 15 KW 43 V10 7 BRN s I DIP SWITCH SETTINGS DEFAULT 30 MINUTES 60 MINUTES 90 MINUTES 120 MINUTES C BRN 123 123 123 123 12272 LEGEND E DEFAULT Z FIELD SPLICE FIELD SELECTABLE OPTIONS FOR TIME PERIOD UNIT COMPONENT ARRANGEMENT CO TERMINAL MARKED CONTACTOR BETWEEN DEFROST CYCLES MINUTES TEN or aR TERMINAL taro CAP CAPACITOR en m centes WILE Saut rpm SECTION uis SU CCH CRANK CASE HEATER Saa as mx ES CO SPLICE MARKED Coup COMPRESSOR MOTOR TEST PINS USE METAL OBJECT S93 FACTORY WIRING CTD COMPRESSOR TIME DELAY FIELD SPEED UP CYCLE 557 F ES FIELD CONTROL WIRING 08 DEFROST BOARD 1 MOMENTARILY SHORT PINS AND RELEASE TO BYPASS SES 37 DFT DEFROST THERMOSTAT FF DELAY E gn ACCESSORY OR OPTIONAL D DEFROST RELAT Sroki teat FOTCE rios DEFROST FAN YIN eno GROUND o DEFROST WILL TERMINATE IN 30 SEC IF OFT OPEN BOARD CONTROL TO INDICATE COMMON HR HEATER RELAY DEFROST WILL TERMINATE NORMALLY IF DFT IS CLOSED BOARD POTENTIAL ONLY IFM INDOOR FAN MOTOR NOT TO REPRESENT WIRING ips LOW PRESSURE SWITCH HPS HPS HIGH PRESSURE SWITCH OFM OUTDOOR FAN MOTOR jo RVS REVERSING VALVE SOLENOID OFT TRAN TRANSFORMER cos NOTES LPS N 1 IF A
29. NY OF THE ORIGINAL WIRES FURNISHED ARE REPLACED TD T1 T2 IT MUST BE REPLACED WITH TYPE 90 DEGREE C WIRE OR FAN SEQUENCE a 2 CONERO SOR DEUM GER I OE RER a E mm 5 RVS PER NEC 2 SEE PRICE PAGES FOR THERMOSTAT AND SUBBASES 0 T90 0 55EC T P5 MIN 3 USE 15 DEGREE COPPER CONDUCTORS FOR FIELD INSTALLATION 6 6 FIELD 4 RELOCATION OF SPEED TAPS MAY BE REQUIRED ENERGIZED DE ENERGIZED CLOSES HPS SUPPLIED WHEN USING FIELD INSTALLED ELECTRIC HEATERS TSAT OPENS GRE Une ELI I2 POWER ENTRY 5 DO NOT DISCONNECT PLUG UNDER LOAD 507H500454 3 0 06326 Fig 16 Typical Three Phase Unit Electrical Diagram Sizes 048 060 14 UNIT FAN CONTROL BOARD STEP STEP TO UNIT POWER WIRING BLK 15 rig 3 2 p l e ve sm AUTO LIMIT 1 1 EL1 e 679 1 o4 ro BLK O A O A X YEL 11 aea 583 EE RELAY 2 7 1 fFeAve RN BRN T guo AUTO LIMIT mid mm o4 re Bim cae YEL EAKERS SHOWN WITH T NT KIT 3 1 57 AUTO LIMIT Ifo top ponio EZ LH v RELAY 4 1 foNe Brn AUTO LIMIT o4 Fe BLK o YEL 05209 Fig 17 Single Phase Accessory Electric Heater Wiring IO UNIT POWER WIRING PINK VIOLET WHITE
30. POTENTIAL ONLY IFM INDOOR FAN MOTOR BOARD NOT TO REPRESENT WIRING Lps LOW PRESSURE SWITCH HPS HIGH PRESSURE SWITCH HPS 1 OFM OUTDOOR FAN MOTOR RVS REVERSING VALVE SOLENOID DFT TRAN TRANSFORMER NOTES EQUIP COMP 1 IF ANY OF THE ORIGINAL WIRES FURBHED ARE REPLACED CTD T1 T2 COMPRESSOR DELAY LPS tE GND IT MUST BE REPLACED WITH TYPE 90 DEGREE C WIRE OR aN SESUENCE IT S EQUIVALENT a DISCONNECT 2 SEE PRICE PAGES FOR THERMOSTAT AND SUBBASES 0 0 5 SEC T T 5 MIN RVS PER NEC 3 USE 75 DEGREE COPPER CONDUCTORS FOR FIELD INSTALLATION G G C1 4 FACTORY WIRING FOR SPEED SELECTOR PLUG ENERGIZED DE ENERGIZED CLOSES OPENS 024 1 HPS Ca SUPPLIED 030 2 ISAT 24V SPLICE 04 3 L 24V POWER ENTRY BOX 5 RELOCATION OF SPEED TAPS MAY BE REQUIRED WHEN USING FIELD INSTALLED ELECTRIC HEATERS CONSULT INSTALLATION INSTRUCTIONS TO DETERMINE CORRECT SPEED TAP SETTING 6 DO NOT DISCONNECT PLUG UNDER LOAD 507H500411 19 0 08209 Fig 13 Typical Single Phase Unit Electrical Diagram Sizes 024 042 11 664B
31. S FOR THERMOSTAT AND SUBDASES 0 5 SEC 1 5 MIN DISCONNECT 3 USE 15 DEGREE COPPER CONDUCTORS FOR FIELD INSTALLATION 5 RVS e PER NEC 4 FACTORY WIRING FOR SPEED SELECTOR PLUG ENERGIZED DE ENERGIZED CLOSES OPENS FIELD HPS ES SUPPLIED R H 24V SPLICE _ 5 RELOCATION OF SPEED TAPS MAY BE REQUIRED BOX POWER ENTRE WHEN USING FIELD INSTALLED ELECTRIC HEATERS CONSULT INSTALLATION INSTRUCTIONS TO 6 DETERMINE CORRECT SPEED TAP SETTING DO NOT DISCONNECT PLUG UNDER LOAD 507H500453 13 0 A06325 Fig 15 Typical Three Phase Unit Electrical Diagram Sizes 030 042 13 664B
32. See Fig 8 and 9 ROUTING CONTROL POWER WIRES 24 V Form a drip loop with the thermostat leads before routing them into the unit Route the thermostat leads through grommeted hole provided in unit into unit control box See Fig 7 Connect thermostat leads and unit power leads as shown in Fig 9 10 and 11 Route thermostat wires through grommet providing a drip loop at the panel Connect low voltage leads to the thermostat as shown in Fig 10 amp 11 The unit transformer supplies 24 v power for complete system including accessory electrical heater Transformer is factory wired for 230 v operation ACCESSORY ELECTRIC HEAT WIRING Refer to accessory electric heat installation instructions for information on installing accessory electric heat Accessory electric heat wiring is shown in Fig 17 and 18 LOW VOLTAGE WIRING ENTRY HOLE grommet hole HIGH VOLTAGE POWER WIRING ENTRY HOLE A08407 Fig 7 Unit Electrical Connection HEATER LOW VOLTAGE PLUG 05388 Fig 8 Control Box Wiring UNIT GROUND GROUND gap l SINGLE PHASE JR ouk CONNECTIONS TO DISCONNECT R va TO DISCONNECT PER NEC YEL PER NEC Loses F Bu C00012 Fig 9 Line Power Connections 2 D s agm E ORN w3 e Thermostat and subbase VIO U
33. Stage Stage Stage Stage 048 Tap 1 Tap 3 Tap 2 Tap 4 060 Tap 1 Tap 3 Tap 2 Tap 4 664B Step 5 Unit Controls compressors have the following internal protection controls HIGH PRESSURE RELIEF VALVE This valve opens when the pressure differential between the low and high side becomes excessive LOSS OF CHARGE SWITCH Located on the outdoor liquid line is a low pressure switch which functions as a loss of charge switch This switch contains a Schrader core depressor This switch opens at 7 psig and closes at 22 psig No adjustment is necessary COMPRESSOR OVERLOAD This overload interrupts power to the compressor when either the current or internal temperature become excessive automatically resets when the internal temperature drops to a safe level This overload may require up to 60 minutes or longer to reset therefore if the internal overload is suspected of being open disconnect the electrical power to the unit and check the circuit through the overload with an ohmmeter or continuity tester Step 6 Compressor Rotation On 3 Phase units it is important to be certain compressor is rotating in the proper direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gages to suction and discharge pressure fittings 2 Energize the compressor 3 The suction pressure should drop and the discharge pressure should rise as is normal on any start u
34. Y1 airflow for continuous fan operation DEFROST Defrost board DB is a time and temperature control which includes a field selectable time period between checks for defrost 30 60 90 and 120 minutes The time period is factory set at 60 minutes and should only be adjusted by a trained service person Electronic timer and defrost cycle start only when contactor is energized and defrost thermostat DFT is closed Defrost mode is identical to Cooling mode The outdoor fan motor stops because of OF1 and OF2 contacts opening on the defrost board a bank of optional electric heat turns on to warm air supplying the conditioned space ELECTRIC RESISTANCE HEATING If accessory electric heaters are installed on a call for Emergency Heat the thermostat energizes W which energizes the heater relay and in turn energizes the electric heaters The IFR is energized which starts the indoor fan motor If the heaters are staged W2 is energized when the second stage of heating is required When the need for heating is satisfied the heater and IFM are de energized 10 FIELD 5 SUPPLY POWER LN DR 6 DB 208 230 1 60 UNIT ONLY J BLK 11 BLI oFTHAXOF2 BLK 7 MAXIMUM WIRE S
35. ace the unit on level ground prepared with gravel for condensate discharge Step 3 Provide Clearances The required minimum service clearances are shown in Fig 5 Adequate ventilation and outdoor air must be provided The outdoor fan draws air through the outdoor coil and discharges it through the top fan grille Be sure that the fan discharge does not recirculate to the outdoor coil Do not locate the unit in either a corner or under an overhead obstruction The minimum clearance under a partial overhang such as a normal house overhang is 48 in 1219 mm above the unit top The maximum horizontal extension of a partial overhang must not exceed 48 in 1219 mm IMPORTANT Do not restrict outdoor airflow An air restriction at either the outdoor air inlet or the fan discharge may be detrimental to compressor life Do not place the unit where water ice or snow from an overhang or roof will damage or flood the unit Do not install the unit on carpeting or other combustible materials Slab mounted units should be at least 4 in 102 mm above the highest expected water and runoff levels Do not use unit if it has been under water Step 4 Place Unit Unit can be moved with the rigging holds provided in the unit base Refer to Table 1 for operating weights Use extreme caution to prevent damage when moving the unit Unit must remain in an upright position during all moving operations The unit must be level with in 1 4 in 6 mm
36. at reversing valve shifts Observe that cooling cycle shuts down when control setting is satisfied Reversing valve RV remains energized 3 Place system switch in HEAT position Observe that compressor indoor fan and outdoor fan energize Reversing Valve is deenergized in heat pump heating mode Set control above room temperature Observe that heating cycle shuts down when control setting is satisfied 4 When using an automatic changeover room thermostat place both SYSTEM and FAN switches in AUTO positions Observe that unit operates in Cooling mode when temperature control is set to call for Cooling below room temperature and unit operates in Heating mode when temperature control is set to call for Heating above room temperature Step 3 Refrigerant Charge Refrigerant Charge Amount of refrigerant charge is listed on unit nameplate and in Table 1 Refer to Bryant Refrigerant Service Techniques Manual Refrigerants section Unit panels must be in place when unit is operating during charging procedure Unit must operate a minimum of 15 minutes before checking charge NO CHARGE Refer to Bryant Refrigerant Service Techniques Use standard evacuating techniques After evacuating system weigh in the specified amount of refrigerant refer to Table 1 LOW CHARGE COOLING 024 042 units 1 Measure suction line pressure by attaching a gauge to the service port 2 Measure the suction line temperature by attaching a temp
37. cooling metering device is an AccuRater 024 042 or TXV 048 and 060 located upstream of the indoor coil distributor assembly Refrigerant heating mode metering device is an AccuRater located upstrem the outdoor coil distributor assembly Step 10 Liquid Line Strainers The liquid line strainers to protect metering devices are made of wire mesh and are located in the liquid lines on the inlet side of the metering devices Step 11 High Flow Valves High flow valves are located on the compressor hot gas and suction tubes Large black plastic caps distinguish these valves with O rings located inside the caps These valves can not be accessed for service in the field Ensure the plastic caps are in place and tight or the possibility of refrigerant leakage could occur TROUBLESHOOTING Refer to the Troubleshooting Chart Table 9 for troubleshooting information START UP CHECKLIST Use the Start Up Checklist at the back of this manual 19 664B OUTDOOR COIL ACCUMULATOR COMPRESSOR INDOOR COIL Check Valves Open Closed Open gt Closed LEGEND LCS Loss of Charge Switch Acutrol Metering Device Check Valve Arrow indicates direction of flow HEATING CYCLE 1 Hot gas from compressor flows through the 4 way valve and is directed to the cooling
38. cts to building structure Flash weatherproof and vibration isolate duct openings in wall or roof according to good construction practices Fig 6 shows a typical duct system with 664B unit installed CONFIGURING UNITS FOR DOWNFLOW VERTICAL DISCHARGE 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before performing service or maintenance operations on the system turn off main power to unit and install lockout tag Units are dedicated side supply products They are not convertible to vertical air supply A field supplied plenum must be used to convert to vertical air discharge Step 6 Connect Condensate Drain NOTE When installing condensate drain connection be sure to comply with local codes and restrictions Unit removes condensate through a 1 3 64 in 27 mm ID hole using 3 4 in 19 mm OD piping or tubing which is located at the end of the unit See Fig 5 for location of condensate connection Condensate water can be drained directly onto the roof in rooftop installations where permitted or onto a gravel apron in ground level installations Install a field supplied condensate trap at end of condensate connection to ensure proper drainage Make sure that the outlet of the trap is at least 1 in 25 mm lower than the drain pan condensate connection to prevent the pan from overflowing See Fig 3 and 4 When using a gravel apron make sure it slop
39. e 4 shows dry coil air delivery for horizontal discharge units yee Tables 6 8 show pressure drops T 17 0 NOTE Be sure that all supply and return air grilles are open free from obstructions and adjusted properly 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Disconnect electrical power to the unit and install lockout tag before changing blower speed Airflow can be changed by changing the lead connections at the blower motor To change motor speeds reposition wire at fan motor speed terminals labeled 1 2 3 4 refer to Fig 12 Remove the speed tap connector labeled 1 through 5 on the motor While looking at the connector end that is inserted into the motor gently pry the locking tab outward and remove the wire from the connector Insert the wire into the desired tap until it locks into place Be sure new airflow meets the range noted above and minimum electric heat if equipped Refer to Table 2 and 4 model sizes are factory wired or rated airflow operation Fig 12 Motor Speed Selection FOR 208 230V BLOWER MOTORS The motor lead speed connections are as follows SIZE RATED AIRFLOW HIGH AIRFLOW 024 Tap 1 Tap 3 030 Tap 2 Tap 4 036 Tap 1 Tap 3 042 Tap 2 Tap 4 RATED AIRFLOW HIGH AIRFLOW SIZE Low High Low High
40. erature sensing device to it 3 Insulate the temperature sensing device so that the outdoor ambient doesn t affect the reading 4 Locate the measured suction line pressure in the top row of Table 5 and the measured outdoor ambient temperature in the left column of the table Based on the two values determine the required suction line temperature 5 If the measured suction line temperature is greater than the tabulated temperature add charge in the system 048 and 060 units 1 Measure discharge line pressure by attaching a gauge to the service port 2 Measure the liquid line temperature by attaching a temperature sensing device to it 3 Insulate the temperature sensing device so that the outdoor ambient doesn t affect the reading 4 Refer to the required subcooling in Tables 3 to find the required subcooling based on the model size and the outdoor ambient temperature 5 Interpolate if the outdoor temperature lies in between the table values Extrapolate if the temperature lies beyond the table range 6 Find the pressure value corresponding to the measured pressure on the compressor discharge line 7 Read across from the pressure reading to obtain the Liquid line temperature for a required subcooling 8 Add charge if the measured temperature is higher than the liquid line temperature value in the table 9 Add charge using the service connection on the suction line of the compressor HEATING MODE CHARGE Do n
41. es away from the unit If the installation requires draining the condensate water away from the unit install a 2 in 51 mm trap using a 3 4 in 19 mm OD tubing or pipe See Fig 3 and 4 Make sure that the outlet of the trap is at least 1 in 25 mm lower than the unit drain pan condensate connection to prevent the pan from overflowing Prime the trap with water Connect a drain tube using a minimum of 3 4 in 19 mm PVC 3 4 in 19 mm CPVC or 3 4 in copper pipe all field supplied Do not undersize the tube Pitch the drain tube downward at a slope of at least 1 in 25 mm for every 10 ft 3 m of horizontal run Be sure to check the drain tube for leaks Prime trap at the beginning of the cooling season start up Allowable glues for condensate trap connection are Standard ABS CPVC or PVC cement 1 25 mm MIN TRAP OUTLET Y 2 51 mm MIN Fig 3 Condensate Trap A08001 SET Bie pen L 2 51 mm MIN Fig 4 PVC Condensate Trap 0 8 Lyy00SHZ0S uv3u SONIN3dO LONG 207 v1 07952 3915 LH9IY 1217611 NIVUO 31VSN30NOD 105 1740 1721 XIG0 1 071 8792 102711 9706 1617821 7061 AYINI 3971 10 MOT 2 ds 990 1
42. for proper condensate drainage the ground level pad must be level before setting the unit in place When a field fabricated support is used be sure that the support is level and that it properly supports the unit Step 5 Select and Install Ductwork The design and installation of the duct system must be in accordance with the standards of the NFPA for installation of non residence type air conditioning and ventilating systems NFPA 90A or residence type NFPA 90B and or local codes and ordinances Select and size ductwork supply air registers and return air grilles according to ASHRAE American Society of Heating Refrigeration and Air Conditioning Engineers recommendations Use the duct flanges provided on the supply and return air openings on the side of the unit See Fig 5 for connection sizes and locations The 14 in 356 mm round duct collars are shipped inside the unit attached to the base pan in the indoor blower compartment They are field installed and must be removed from the indoor blower compartment prior to start up even if they are not used for installation When designing and installing ductwork consider the following CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in damage to unit components When connecting ductwork to units do not drill deeper than 3 4 in 19 mm in shaded area shown in Fig 2 or coil may be damaged 4 19 17 in 487 mm 13 92 in 100
43. igerant and the circuits are com bined in the indoor coil header with some of the circuits flowing through the check valve 4 The refrigerant then flows through the 4 way valve accumulator cooling liquid line and back to the compressor C95045 C95044 SYMPTOM Table 9 Troubleshooting Chart CAUSE REMEDY Compressor and outdoor fan will not start Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor transformer control relay or high pressure loss of charge or low pressure switch Replace component Insufficient line voltage Determine cause and correct Incorrect or faulty wiring Check wiring diagram and rewire correctly Thermostat setting too low too high Reset Thermostat setting Compressor will not start but condenser fan runs Faulty wiring or circuit Loose connections in compressor Check wiring and repair or replace Compressor motor burned out seized or internal overload open Determine cause Replace compressor Defective run capacitor overload or PTC positive temperature coefficient thermistor Determine cause and replace One leg of 3 phase power dead Replace fuse or reset circuit breaker Determine cause Low input voltage Determine cause and correct Three phase scroll compressor size 030 060 unit has a low pressure differential Scroll compresso
44. justments 8 Checking Cooling and Heating Control Operation 8 Refrigerant Charge 8 No Charge iet e Oe 8 Low Charge 8 Heating Mode Charge 8 Indoor Airflow and Airflow Adjustments 9 Unit Controls sexos bee tere ne vor Re Rao 9 High Pressure Relief Valve 9 Loss of Charge Switch 9 Compressor Overload 10 Compressor 10 Sequence of Operation 10 Pan Operation eb mes reddere ad 10 A AI NNN NN 05194 Fig 1 Unit 664B Cooling 10 17 Heating Operation 17 Continuous 17 Dettost erer arnie tae EMEN REESE CERES 17 Electric Resistance Heating 17 MAINTENANCE pr prr et e em 17 20 Air Pile GM PRIOR 18 Unit Top Removal ispi errei eeii a DERE CERE 18 Indoor Blower and Motor 18 Outdoor Coil Indoor Coil and Condensate Drain Pan 19 OutdoorTan hr Races b ch 19 Electrical Controls and Wiring 19 Refrigerant
45. l tools and miscellaneous loose parts have been removed START UP Step 1 Check for Refrigerant Leaks Proceed as follows to locate and repair a refrigerant leak and to charge the unit 1 Locate leak and make sure that refrigerant system pressure has been relieved and reclaimed from both high and low pressure ports 2 Repair leak following accepted practices NOTE Install a filter drier whenever the system has been opened for repair Step 2 Start Up Cooling and Make Adjust ments Complete the required procedures given in the Pre Start Up section before starting the unit Do not jumper any safety devices when operating the unit Do not operate the unit in cooling mode when the outdoor temperature is below 40 F 4 4 C unless accessory low ambient kit is installed Do not rapid cycle the compressor Allow 5 min between cycles to prevent compressor damage CHECKING COOLING AND HEATING CONTROL OPERATION Start and check the unit for proper cooling control operation as follows 1 Place room thermostat SYSTEM switch in OFF position Observe that blower motor starts when FAN switch is placed in ON position and shuts down within 60 sec for 024 042 or 90 seconds for 048 and 060 when FAN switch is placed in AUTO position 2 Place SYSTEM switch in COOL position and FAN switch in AUTO position Set control below room temperature Observe that compressor outdoor fan and indoor blower motors start and th
46. mber and serial number are printed on the unit informative plate Check this information against shipping papers INSPECT SHIPMENT Inspect for shipping damage while unit is still on shipping pallet If unit appears to be damaged or is torn loose from its anchorage have it examined by transportation inspectors before removal Forward claim papers directly to transportation company Manufacturer is not responsible for any damage incurred in transit Check all items against shipping list Immediately notify the nearest equipment distribution office if any item is missing To prevent loss or damage leave all parts in original packages until installation Step 2 Provide Unit Support For hurricane tie downs contact distributor for details and PE Professional Engineering Certificate if required SLAB MOUNT Place the unit on a solid level concrete pad that is a minimum of 4 in 102 mm thick with 2 in 51 mm above grade The slab should extend approximately 2 in 51 mm beyond the casing on all 4 sides of the unit Do not secure the unit to the slab except when required by local codes A 6 in 152 mm wide gravel apron should be used around the flat surface to prevent airflow blockage by grass or shrubs The unit should be level within 1 4 in 6 mm This is necessary for the unit drain to function properly GROUND MOUNT The unit may be installed either on a slab or placed directly on the ground if local codes permit Pl
47. nd prepare the unit for initial start up 1 Remove all access panels 2 Read and follow instructions on all DANGER WARNING CAUTION and INFORMATION labels attached to or shipped with unit 3 Make the following inspections a Inspect for shipping and handling damages such as broken lines loose parts disconnected wires etc b Inspect for oil at all refrigerant tubing connections and on unit base Detecting oil generally indicates a refrigerant leak Leak test all refrigerant tubing connections using electronic leak detector or liquid soap solution If a refrigerant leak is detected see Check for Refrigerant Leaks section 664B c Inspect all field and factory wiring connections Be sure that connections are completed and tight d Ensure wires do not touch refrigerant tubing or sharp sheet metal edges e Inspect coil fins If damaged during shipping and handling carefully straighten fins with a fin comb 4 Verify the following conditions a Make sure that outdoor fan blade is correctly positioned in fan orifice Top edge of blade should be 3 125 in 79 mm down from outdoor coil outlet grille size 024 048 See Fig 19 or hub should be 0 708 18 mm away from motor end bell size 060 See Fig 19 See Outdoor Fan Adjustment section b Make sure that air filter is in place c Make sure that condensate drain pan and trap are filled with water to ensure proper drainage d Make sure that al
48. nit Control Power A05207 Fig 10 Control Connections Sizes 024 042 BRN 2 RED GRN v YEL ORN o PY Thermostat and subbase VIO Unit Control Power 05208 Fig 11 Control Connections Sizes 048 060 PRE START UP A WARNING FIRE EXPLOSION HAZARD ELECTRICAL SHOCK Failure to follow this warning could result in personal injury or death and or property damage 1 Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system Relieve and recover all refrigerant from system before touching or disturbing anything inside terminal box if refrigerant leak is suspected around compressor terminals Never attempt to repair soldered connection while refrigerant system is under pressure Do not use torch to remove any component System contains oil and refrigerant under pressure To remove a component wear protective goggles and proceed as follows Shut off electrical power to unit and install lockout tag Relieve and reclaim all refrigerant from system using both high and low pressure ports Cut component connecting tubing with tubing cutter and remove component from unit Carefully unsweat remaining tubing stubs when necessary Oil can ignite when exposed to flame Proceed as follows to inspect a
49. ot attempt to adjust charge by cooling methods while in heat pump heating mode Recover refrigerant and weigh in according to unit data plate refrigerant data Table 3 Required Subcooling Required Subcooling Required Liquid Line Temperature for a Specific Subcooling R 22 Outdoor Ambien Temperature Required Subcooling F Required Subcooling C Model Size Pressure Pressure 15 24 82 28 85 29 95 35 105 41 psig 5 10 15 20 kPa 3 6 8 11 048 18 109 17 09 4 17 9 4 16 8 9 14 7 8 131 n 66 56 924 34 22 19 16 049 24 13 3 23 12 8 22 12 2 22 12 2 20 11 1 141 14 69 64 59 912 26 23 21 18 060 far 21 11 17 20 11 13 19 10 6 16 8 9 156 80 15 19 65 015 30 21 24 21 163 83 18 13 68 124 31 28 26 23 110 86 81 16 1 112 33 30 21 24 111 89 84 19 14 220 34 31 29 26 184 91 86 81 16 268 36 33 30 21 191 94 89 84 19 311 31 34 31 29 Charging Procedure CHARGE SYSTEM IN HIGH CAPACITY 1 Measure Discharge line pressure by attaching a gauge to the ae 28 2 35 2 3 Service port 213 01 96 91 86 468 41 38 36 33 2 Measure the Liquid line temperature by attaching a emperature sensing device to it 221 99 34 89 524 43 19 31 34 3 Insulate the temperature sensing de
50. p If the suction pressure does not drop and the discharge pressure does not rise to normal levels 1 Turn off power to the unit and tag disconnect 2 Reverse any two of the unit power leads 3 Turn on power to the unit The suction and discharge pressure levels should now move to their normal start up levels NOTE When the compressor is rotating in the wrong direction the unit makes an elevated level of noise and does not provide cooling Step 7 Sequence of Operation FAN OPERATION The FAN switch on the thermostat controls indoor fan operation When the FAN switch is placed in the ON position the IFR indoor fan relay is energized through the G terminal on the thermostat The normally open contacts close which then provide power to the indoor evaporator fan motor IFM The IFM will run continuously when the FAN switch is set to ON When the FAN switch is set to AUTO the thermostat deenergizes the IFR provided there is not a call for cooling The contacts open and the IFM is deenergized The IFM will be energized only when there is a call for cooling in heat pump heating mode or if the unit is equipped with accessory electric heat the indoor fan motor will also run while the accessory electric heat is energized NOTE Some units are equipped with a time delay relay On these units the indoor fan remains on for 30 seconds after G or Y is deenergized COOLING OPERATION SIZES 024 042 With a call for cooling
51. pect the drain pan and condensate drain line when inspecting the coils Clean the drain pan and condensate drain by removing all foreign matter from the pan Flush the pan and drain trough with clear water Do not splash water on the insulation motor wiring or air filter s If the drain trough is restricted clear it with a plumbers snake or similar probe device Step 5 Outdoor Fan 4 CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in damage to unit components Keep the condenser fan free from all obstructions to ensure proper cooling operation Never place articles on top of unit 1 Shut off unit power supply and install lockout tag 2 Remove outdoor fan assembly grille motor motor cover and fan by removing screws and flipping assembly onto unit top cover Loosen fan hub setscrews Adjust fan height as shown in Fig 19 Tighten setscrews nn RU Replace outdoor fan assembly L ona 12 mm A08004 Fig 19 Outdoor Fan Adjustment Step 6 Electrical Controls and Wiring Inspect and check the electrical controls and wiring annually Be sure to turn off the electrical power to the unit Remove access panel to locate all the electrical controls and wiring Check all electrical connections for tightness Tighten all screw connections If any smoky or burned connections are noticed disassemble the connection clean all the parts re strip the
52. r is rotating in the wrong direction Correct the direction of rotation by reversing the 3 phase power leads to the unit Compressor cycles other than normally sat isfying cooling heating calls Refrigerant overcharge or undercharge Recover refrigerant evacuate system and re charge to capacities shown on rating plate Defective compressor Replace and determine cause Insufficient line voltage Determine cause and correct Blocked outdoor coil Determine cause and correct Defective run start capacitor overload or start relay Determine cause and replace Faulty outdoor fan motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor operates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat temperature set too low Reset Thermostat setting Low refrigerant charge Locate leak repair and recharge Air in system Recover refrigerant evacuate system and re charge Outdoor coil dirty or restricted Clean coil or remove restriction Excessive head pressure Head pressure too low Dirty air filter Replace filter Dirty indoor or outdoor coil Clean coil Refrigerant overcharged Recover excess refrigerant Air in system Recover refrigerant evacuate system and re charge Indoor or outdoor air restricted or air
53. se units ensure phases are balanced within 2 percent Consult local power company for correction of improper voltage and or phase imbalance Do not damage internal components when drilling through any panel to mount electrical hardware conduit etc HIGH VOLTAGE CONNECTIONS The unit must have a separate electrical service with a field supplied waterproof disconnect switch mounted at or within sight from the unit Refer to the unit rating plate NEC and local codes for maximum fuse circuit breaker size and minimum circuit amps ampacity for wire sizing The field supplied disconnect may be mounted on the unit over the high voltage inlet hole when the standard power and low voltage entry points are used See Fig 6 and 7 for acceptable location Operation of unit on improper line voltage constitutes abuse and may cause unit damage that could affect warranty ROUTING POWER LEADS INTO UNIT Use only copper wire between disconnect and unit The high voltage leads should be in a conduit until they enter the unit conduit termination at the unit must be watertight Run the high voltage leads through the hole on the control box side of the unit See Fig 7 When the leads are inside the unit run leads to the control box See Fig 8 For single phase units connect leads to the black and yellow wires See Fig 9 CONNECTING GROUND LEAD TO UNIT GROUND Connect the ground lead to the chassis using the unit ground in the control box
54. tools and equipment If you do not possess these do not attempt to perform any maintenance on this equipment other than those procedures recommended in the Owner s Manual The minimum maintenance requirements for this equipment are as follows 1 Inspect air filter s each month Clean or replace when necessary 2 Inspect indoor coil drain pan and condensate drain each cooling season for cleanliness Clean when necessary 3 Inspect blower motor and wheel for cleanliness each cooling season Clean when necessary 4 Check electrical connections for tightness and controls for proper operation each cooling season Service when necessary 5 Ensure electric wires are not in contact with refrigerant tubing or sharp metal edges 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow these warnings could result in personal injury or death 1 Turn off electrical power to the unit before performing any maintenance or service on this unit 2 Use extreme caution when removing panels and parts Never place anything combustible either on or in contact with the unit Step 1 Air Filter IMPORTANT Never operate the unit without a suitable air filter in the return air duct system Always replace the filter with the same dimensional size and type as originally installed See Table 1 for recommended filter sizes Inspect air filter s at least once each month and replace throwaway type or clean cleanable type at least
55. vice so that the Outdoor Ambient doesn t affect the reading 229 06 01 96 3 519 44 4 38 36 4 Refer to the required Subcooling in the table to find the 237 08 03 98 93 634 45 42 40 31 required Subcooling bosed on the model size and the 245 111 06 01 96 689 41 44 41 38 Outdoor Ambient temperature 253 13 08 03 98 144 48 45 42 40 5 Interpolate if the Outdoor temperature lies in between the table values 262 16 11 06 01 806 49 46 44 41 6 Find the Pressure Value corresponding to the measured 211 118 13 08 103 1868 51 48 45 42 ressure on the Compressor Dischorge line 280 21 16 11 06 930 52 49 46 44 1 Read across from the Pressure reading to obtain the Liquid 289 23 18 13 08 992 53 51 48 45 ine temperature for a required Subcooling 8 Add Charge if the measured temperature is higher than the iquid line temperature value in the table 255 152 d n Ms EH 22 18 9 Add Charge using the service connection on the Suction line 311 30 25 20 15 2185 51 54 52 49 of the Compressor 10 Remove charge if the measured temperature is lower than the 327 3 21 22 Wt 2254 3 5 3 30 iquid line temperature in the table 337 35 30 25 20 2323 60 57 54 52 347 37 32 21 22 2392 61 58 56 53 351 39 34 29 124 2461 62 60 51 54 367 42 31 32 21 2530 64 61 58 55 DRAWING NUMBER REV 507H500315 50 08406 Step 4 Indoor Airflow and Airflow Adjust F ments NOTE For cooling operation the recommended airflow is 350 to 450 cfm for each 12 000 Btuh of rated cooling capacity Tabl
56. w2 BROWN c TO UNIT CONTROL WIRING 24VAC oe BLUE bh BLUE HR2 J YELLOW YELLOW HR1 L1 12 BLACK BLACK Ga SINGLE POINT KIT AUTO LIMIT YELLOW AUTO LIMIT EL3 AUTO LIMIT BLACK A06327 Fig 18 Three Phase Accessory Electric Heater Wiring 664B Table 4 Dry Coil Air Delivery Horizontal Discharge Deduct 10 percent for 208 Volt Operation 230 VOLT HORIZONTAL DISCHARGE UNIT SPEED AIR EXTERNAL STATIC PRESSURE IN WC SIZE TAP DELIVERY 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 Watts E 99 100 118 130 142 1 xx 848 793 757 698 632 024 Watts 222 283 244 257 260 2 CFM 970 918 861 795 729 Watts 155 146 157 170 2 1108 995 951 884 Watts 261 275 286 291 315 s CFM 1117 1053 1014 980 877 Watts 180 166 179 191 204 216 1344 1215 1172 1136 1095 1051 036 Watts 261 276 290 801 816 329 342 2 CFM 1848 1804 1272 1234 1190 1148 1100 Watts 269 283 805 821 336 349 360 s CFM 1440 1404 1869 1333 1801 1273 1239 B 042 Watts z 418 432 450 465 480 490 503 518 a CFM 1572 1543 1504 1475 1441 1418 1380 1332 Watts 204 209 216 229 236 249 zu 1129 1087 1027 994 932 881 Watts 28
57. wire end and reassemble the connection properly and securely Check to ensure no wires are touching refrigerant tubing or sharp sheet metal edges Move and secure wires to isolate from tubing and sheet metal edges After inspecting the electrical controls and wiring replace all the panels Start the unit and observe at least one complete cooling cycle to ensure proper operation If discrepancies are observed in operating cycle or if a suspected malfunction has occurred check each electrical component with the proper electrical instrumentation Refer to the unit wiring label when making these checks Step 7 Refrigerant Circuit Inspect all refrigerant tubing connections and the unit base for oil accumulation annually Detecting oil generally indicates a refrigerant leak If oil is detected or if low performance is suspected leak test all refrigerant tubing using an electronic leak detector or liquid soap solution If a refrigerant leak is detected refer to Check for Refrigerant Leaks section If no refrigerant leaks are found and low performance is suspected refer to Checking and Adjusting Refrigerant Charge section Step 8 Indoor Airflow The heating and or cooling airflow does not require checking unless improper performance is suspected If a problem exists be sure that all supply and return air grilles are open and free from obstructions and that the air filter is clean Step 9 Metering Devices Refrigerant
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