Bryant 698B Heat Pump User Manual
Contents
1. A01050 Fig 1 Model 698B 4 Leave some slack between structure and unit to absorb vibration 5 When passing refrigerant tubes through the wall seal opening with RTV or other pliable silicon based caulk See Fig 2 6 Avoid direct tubing contact with water pipes duct work floor joists wall studs floors and walls 7 Do not suspend refrigerant tubing from joists and studs with a rigid wire or strap which comes in direct contact with tubing See Fig 2 8 Ensure that tubing insulation is pliable and completely surrounds vapor tube 9 When necessary use hanger straps which are 1 in wide and conform to shape of tubing insulation See Fig 2 10 Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation When outdoor unit is connected to factory approved indoor unit outdoor unit contains system refrigerant charge for operation with indoor unit of the same size when connected by 15 ft of field supplied or factory accessory tubing For proper unit opera tion check refrigerant charge using charging information located2. FORCE DEFROST DEFROST TIME MIN 1 COMM STATUS A VH o YEL OFM m C D FAN CAP BLK 2o BLK o ofern mum ONAAANO RED CCH TO INDOOR UNIT A03030 Fig 18 Wiring Diagram 024 036 048 DUAL CAPACITY CONNECTION DIAGRAM 208 230 1 60 POWER SUPPLY O EQUIP GND RED r ORN ORN 11213 14T15 112 MI HPAC C SEV RYS C Hi L LPS TT YEL PNK FORCE 3 YEL PNK DEFROST BLU PNK BLU PNK N DEFROST L TIME MIN BLK BLK BRN BRN T Jd OFM ABC OD LEAN CAE NM E l OHBRN LS mes OVO RED CCH TO INDOOR UNIT A03031 Fig 19 Wiring Diagram 060 2003 Bryant Heating amp Cooling Systems 7310 W Morris St Indianapolis IN 46231 16 Printed in U S A 698b244 Catalog No 5369 812
3. See notes 1 2 3 7 8 and 12 A01423 TWO STAGE FURNACE WITH PSC TWO SPEED BLOWER MOTOR HEAT PUMP M Noose I HUMIDIFY __ In H MiDIFIER Id 24 VAC N A OUTDOOR SENSOR gt I CONNECTION OUTDOOR L4 SENSOR 7I DE fi a pt ta d pe i pe fi 4 See notes 1 2 3 5 7 8 9 10 and 11 Fig 13 Typical 24V Circuit Connections g A01426 THERMIDISTAT VARIABLE SPEED PROGRAMMABLE VARIABLE CONTROL CONDENSING TWO SPEED DUAL FUEL SPEED MODEL RH FURNACE HEAT PUMP THERMOSTAT CONDENSING TWO SPEED MODEL DF FURNACE HEAT PUMP RVS COOLING O W2 ER ral m E COOL HEAT fad STAGE 1 rwa FAN de HEAT STAGE 3 W W1 HEAT STAGE 3 wwiL 4 I og COOL HEAT wre STAGE 2 COOL HEAT IA pe viY2 H 4 Y2 a SHOE RVS COOLING nfo 24 VAC HOT COOL HEAT n qs STAGE 1 COMPRESSOR LO DEHUMIDIFY 24 VAC COMM Roe 24 VAC COMM N A HUM HUMIDIFY LAY HUMDIRER N A B RVS SENSING NN OUTDOOR OUTDOOR ege Ls rea gupoen sworn pr SENSOR CONNECTION Ls2 H osuere RI ai 3 CONNECTIONS 8 7777 7 See notes 1 2 3 5 7 8 9 10 11 and 13 See notes 1 2 3 5 7 8 and 12 A03033 A03036 VARIABLE SPEED 80 PROGRAMMABLE TWO STAGE TWO SPEED NON CONDENSING FURN
4. on control box cover or in the Check Charge section of this instruction IMPORTANT Maximum liquid line size is 3 8 in O D for all residential applications IMPORTANT Always install the factory supplied Puron heat pump bi flow liquid line filter drier Obtain replacement filter driers from your distributor or branch NOTE Avoid contact between tubing and structure OUTDOOR WALL INDOOR WALL nt TA I F LIQUID TUBE Y 3 4 A js VAPOR TUBE INSULATION THROUGH THE WALL Dar OST INSULATION pj VAPOR TUBE amp HANGER STRAP AROUND VAPOR TUBE ONLY 0 o o o 1 MIN i LL i LIQUID TUBE SUSPENSION A01383 Fig 2 Connecting Tubing Installation INSTALLATION CHECK EQUIPMENT AND JOB SITE A UNPACK UNIT Move to final location Remove carton taking care not to damage unit B INSPECT EQUIPMENT File claim with shipping company prior to installation if shipment is damaged or incomplete Locate unit rating plate on unit corner panel It contains information needed to properly install unit II 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 3 to determine base pan size and knockout hole location On rooftop applications mount on level p
5. drier with a wet cloth or heat sinking material Braze connections using either silver bearing or non silver bearing brazing material Do not use soft solder materials which melt below 800 F Consult local code require ments CAUTION To prevent damage to unit or service valves observe the following A Use a brazing shield Wrap service valves with wet cloth or use a heat sink material E LEAK CHECKING Leak test all joints in indoor outdoor and refrigerant tubing F EVACUATE REFRIGERANT TUBING AND INDOOR COIL CAUTION To avoid compressor damage never use the system compressor as a vacuum pump Refrigerant tubes and indoor coil must be evacuated using the recommended deep vacuum method of 500 microns The alternate triple evacuation method may be used if the procedure outlined below is followed IMPORTANT Never open system under vacuum to atmosphere without first breaking it open with nitrogen SENSING BULB STRAP SUCTION TUBE X 8 O CLOCK 4 O CLOCK A02000 Fig 7 Positioning of Sensing Bulb M SWEAT FLARE ADAPTER TEFLON SEAL LIQUID SERVICE VALVE A97556 Fig 8 Liquid Service Valve with Sweat Adapter Tube DEEP VACUUM METHOD The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage 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 li
6. in piston body 6 Replace indoor coil inlet tube Use back up wrench to prevent damage CAUTION To prevent damage to the unit use a brazing shield and wrap TXV with wet cloth or use heat sink material 7 Sweat swivel adapter See Fig 6D to inlet of indoor coil and attach to TXV See Fig 6A outlet Use backup wrench to avoid damage to tubing or valve Sweat inlet of TXV marked IN to liquid line Avoid excessive heat which could damage valve pac Et 8 Install vapor elbow See Fig 6B with equalizer adapter to suction tube of line set and suction connection to indoor coil Adapter has a 1 4 in male flare connector for attaching equalizer tube 9 Connect equalizer tube of TXV to 1 4 in equalizer fitting on vapor line adapter 10 Attach TXV bulb to horizontal section of suction line using bulb strap provided See Fig 6C Insulate bulb with factory supplied insulation tape See Fig 6E See Fig 7 for correct positioning of sensing bulb 11 Proceed with remainder of unit installation B FAN COILS Indoor unit fan coil comes factory equipped with a bi flow shut off TXV specifically designed for Puron two speed No TXV changeout is required PROCEDURE 2 REPLACING R 22 TXV OR NON BALANCE PORT PURON TXV 1 Remove any existing refrigerant and ensure coil has not been exposed to atmospheric pressure for more than 15 minutes 2 Remove coil access panel and fitting door from cabinet 3 Re
7. 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 tight VIII MAKE ELECTRICAL CONNECTIONS A95425 WARNING To avoid personal injury or death do not A 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 DISCONNECT PER N E C AND OR LOCAL CODES CONTACTOR FIELD POWER A WIRING GROUND LUG A91306 Fig 12 Line Power Connections 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 A ROUTE GROUND AND POWER WIRES Remove access panel and control box cover to gain access to unit wiring Extend wires from disconnect through power
8. installation POE oil in compressor is extremely susceptible to moisture absorption Always keep ends of tubing sealed during installation CAUTION To prevent compressor damage DO NOT bury more than 36 in of refrigerant tubing If ANY tubing is buried provide 6 in vertical rise at service valve Outdoor units may be connected to indoor section using accessory tubing package or field supplied refrigerant grade tubing of correct size and condition Tubing diameters listed in Table 1 are adequate for equivalent lengths up to 50 ft For tubing requirements beyond 50 ft substantial capacity and performance losses can occur Follow the recommendations in the Application Guideline and Service Manual for Residential Split System Air Conditioners and Heat Pumps Using Puron Refrigerant to minimize losses Refer to Table 1 for field tubing diameters Refer to Table 2 for accessory requirements If refrigerant tubes or indoor coil are exposed to atmosphere they must be evacuated to 500 microns to eliminate contamination and TABLE 1 REFRIGERANT CONNECTIONS AND RECOMMENDED LIQUID AND VAPOR TUBE DIAMETERS IN LIQUID VAPOR LONG LINE Connection Tube Connection Connection Tube Diameter_ Diameter Diameter Diameter Diameter _ Diameter 3 8 3 8 5 8 5 8 5 8 3 4 3 8 3 8 3 4 3 4 3 4 7 8 3 8 3 8 7 8 7 8 7 8 7 8 3 8 3 8 7 8 1 1 8 7 8 1 1 8 Notes 1 Tube diameters are for lengths up to 50 equivalent f
9. its usage For example O W2 means O is energized in cooling mode Refer to indoor unit Installation Instructions for any additional features and wiring information Non Programmable Model 2S01 B when used in heat pump installations jumper R19 NOT cut uses O W2 to control reversing valve Un d U N e Furnace must control its own second stage operation via furnace control algorithms Refer to furnace Installation Instructions for proper setup To activate dehumidify function on FK4 or FV4 remove J1 jumper at fan coil control board Heat pump MUST have a high pressure switch for dual fuel applications Outdoor air temperature sensor must be attached in all dual fuel applications oo won a Thermidistat Dip Switch No 1 should be set in ON position for heat pump installations 10 Thermidistat Dip Switch No 2 should be set in the ON position for dual capacity compressor operation 11 Thermidistat Configuration Option No 10 Dual Fuel Selection must be turned ON in all dual fuel applications 12 Dual Fuel Dip Switch D no 4 must be set in the ON position for dual capacity compressor operation 13 The DE jumper located next to the DHUM terminal must be removed to enable the DEHUM input NOTE If unit has not operated within the past 12 hr or following a unit power up upon the next thermostat high or low speed demand unit operates for a minimum of 5 minutes on high speed 4 Close electrical disconnects to ener
10. not equipped with Schrader valves Fully back seat counter clockwise valve system before removing gage port cap CAUTION Do not vent refrigerant to atmosphere Re cover during system repair or final unit disposal Follow these steps to properly start up the system 1 The outdoor unit is equipped with a crankcase heater which operates when the compressor is OFF Energize crankcase heater 24 hr before starting unit To energize heater only set indoor thermostat to OFF position and close power discon nect to unit 2 Fully back seat open liquid and vapor tube service valves 3 Unit is shipped with valve stem s front seated and caps installed Replace stem caps after system is opened to refrigerant flow back seated Replace caps finger tight and tighten additional 1 12 turn 20 ft Ib torque with wrench PROGRAMMABLE THERMOSTAT MODEL 2S 24 VAC HOT FAN COOL HEAT STAGE 1 RVS COOLING COOL HEAT STAGE 2 HEAT STAGE 3 24 VAC COMM N A OUTDOOR SENSOR CONNECTION NON PROGRAMMABLE THERMOSTAT MODEL 2S 24 VAC HOT 24 VAC COMM FAN COOL HEAT STAGE 2 FV4 FK4 TWO SPEED FAN COIL HEAT PUMP m JUMPER Lu 3 jena r 3 3 Arce i J2 JUMPER See notes 1 2 and 3 A01475 FVA FK4 TWO SPEED FAN COIL HEAT PUMP J1 JUMPER HEAT STAGE 3 RVS COOLING COOL HEAT STAGE 1 N A OUTDOOR SENSOR CONNECTION THERMIDISTAT C
11. rotates clockwise Both the lower and upper pistons are eccentric with the rotating crankshaft and both compress refrig erant When the compressor operates in single capacity the motor reverses direction rotates counterclockwise The lower piston becomes idle and the upper piston compresses refrigerant During single capacity operation the start and run windings are reversed G CRANKCASE HEATER OPERATION The two speed control energizes the compressor crankcase heater during unit s off cycle H OUTDOOR FAN MOTOR OPERATION The two speed control energizes outdoor fan any time compressor is operating The outdoor fan remains energized during the minute speed change time delay and if a pressure switch or compressor overload should trip Outdoor fan motor will continue to operate for one minute after the compressor shuts off when the outdoor ambient is greater than 100 F TABLE 4 LED CONTROL FUNCTION LIGHT CODE DEFINITION No demand Stand by Constant flash No pause 1 flash w pause 2 flashes w pause 3 flashes w pause 4 flashes w pause 3 flashes pause 4 flashes 5 flashes pause 1 flash 5 flashes w pause 2 flashes 6 flashes w pause Constant light No pause No flash Function light signal order of importance in case of multiple signal request 1 is most important T Check both thermistors to determine which is faulty Low speed operation High speed operation Outdoor ambient thermisto
12. 2 and de energizes outdoor fan Upon termination there is a 20 sec delay in outdoor fan being energized K FIELD INITIATED FORCED DEFROST By placing a jumper across forced defrost terminals See Fig 15 for a minimum of 5 sec and then removing it a defrost cycle can be initiated The cycle occurs only if outdoor ambient is less than 50 F regardless of outdoor coil temperature The cycle terminates when coil thermistor reaches 80 F 2 5 or defrost period reaches a maximum of 10 minutes L COMPRESSOR VOLTAGE FAILURE 6 FLASHES The control senses the voltage of the compressor run winding If compressor voltage Vc is less than 90v when control board is calling for compressor operation control shuts compressor off for 15 minutes with outdoor fan running After 15 minutes provided there is a call for Y1 or Y2 control attempts to start compressor During this time a code of 6 flashes appears at control board If Vc trip occurs 3 consecutive times during a Y1 request then low capacity operation is locked out and control responds to Y2 requests until a reset occurs If 3 consecutive trips occur in a combination of Y and Y2 or all Y2 requests then both low and high capacity operation will be locked out The compressor voltage failure 6 flashes can be caused by compressor internal overload trip refer to Table 7 for correct winding no 208 230 volt power supply to outdoor unit failed compressor contactor s failur
13. 277 Fig 5 TXV Installed VI CHECK INDOOR EXPANSION DEVICE CAUTION For proper unit operation and reliability units must be installed with balance port hard shutoff Al TXV specifically designed to operate with Puron amp two speed unit Do not install with evaporator coils having capillary tube metering devices A FURNACE COILS Puron furnace coils come factory equipped with bi flow hard shutoff TXV s specifically designed for Puron two speed units No changeout is required Remove existing Check Flo Rater piston from indoor coil and install field accessory TXV Install TXV kit to indoor coil as follows IMPORTANT The TXV should be mounted as close to the indoor coil as possible and in a vertical upright position Avoid mounting the inlet tube vertically down Valve is more susceptible to malfunction due to debris if inlet tube is facing down A factory approved filter drier must be installed in the liquid line PROCEDURE 1 INSTALLING TXV IN PLACE OF PIS TON Ensure coil has not been exposed to atmospheric pressure for more than 15 minutes 2 Remove indoor coil inlet tube at piston body inlet Use back up wrench to prevent damage 3 Remove piston retainer being careful not to damage sealing surface of O ring 4 Remove and discard factory installed piston Replace re tainer if O ring is damaged NOTE If the piston is not removed from the body TXV will not function properly 5 Reinstall piston retainer
14. 4 Connect equalizer tube of TXV to 1 4 in equalizer fitting on vapor line adapter Use backup wrench to prevent damage to equalizer fitting 15 Proceed with remainder of unit installation C Long Line Applications Install Liquid Line Solenoid Valve LSV For refrigerant piping arrangements with equivalent lengths greater than 50 ft or when elevation difference between indoor and or outdoor unit is greater than 20 ft follow all requirements TMM Nn PRO LOMO UN MULA QR QUA OQ USADO NUM 19 N A un AS BULB INSULATION TAPE A01418 Fig 6 TXV Kit Contents of the Long Line Guideline section in the Application Guideline and Service Manual for Residential Split System Air Conditioners and Heat Pumps Using Puron Refrigerant If required by Long Line Application Guideline install LSV kit Part No KHALSO401LLS specifically designed for Puron Heat Pumps LSV should be installed between filter drier and indoor coil as close as possible to filter drier Follow the Installation Instructions included with accessory kit IMPORTANT Flow arrow must point toward outdoor unit VII MAKE PIPING CONNECTIONS WARNING Relieve pressure and recover all refrigerant before system repair or final unit disposal to avoid personal injury or death Use all service ports and open all flow control devices including solenoid valves CAUTION Do not leave system open to atmosphere any longer than minimum required for
15. ACE DUAL FUEL FURNACE HEAT PUMP THERMIDISTAT THERMOSTAT CONTROL TWO SPEED MODEL RH HEAT PUMP 24 VAC HOT RVS COOLING FAN HEAT COOL STAGE 1 HEAT STAGE 3 FURNACE HEATSTAGES W w1 COQUHEAT HEAT 5 Y Y2 COMPRESSOR HI FAN G RVS COOLING 24VAC HOT R COQU HEAT COMPRESSOR LO 2avaccom c pEHUMIDIFY DHUMH IIDHUMI IPL9 10 HUMIDIFY HUML RVS SENSING N A LE een vee SENSOR n OUTDOOR s 1 CONNECTION 4 CONNECTIONS sajf gt See notes 1 2 3 5 7 8 9 10 and 11 SWITCH SETTINGS VARIABLE SPEED 80 See notes 1 2 3 5 7 8 and 12 NON CONDENSING FURNACE A01424 PROGRAMMABLE THERMOSTAT TWOSREED MODEL DF RVS COOLING COOL HEAT STAGE 1 COMPRESSOR LO vearsTace 2 wwr COOL HEAT YIY2 LEGEND 24 VOLT FACTORY WIRING 24 VOLT FIELD WIRING STAGE 2 GOMRFESSOR HD Le 24vacHor R c FIELD SPLICE CONNECTION RELAY SPDT PILOT DUTY 24 V COIL HN61KK324 OR EQUIVALENT 24 VAC COMM N A B HUMIDISTAT OPENS ON HUMIDITY RISE HL38MG026 RVS SENSING L oumoon LS AIRFLOW SELECTOR SENSOR OESTE CONNECTIONS RELAY COIL See notes 1 2 3 5 7 8 and 12 A03035 Fig 13 Typical 24V Circuit Connections Cont and Wiring Diagram Legend Mine WIRING DIAGRAM NOTES Wiring must conform to NEC or local codes Underlined letter on thermostat terminal indicates
16. AGE ACCESSORY Coastal Filter REQUIRED FOR LONG LINE REQUIRED FOR SEA COAST APPLICATIONS APPLICATIONS OVER 50 FT WITHIN 2 MILES No Yes Support Feet No Recommended Puron Hard Shutoff TXV Yest Yest Puron Liquid Line Solenoid Valve for Heating LHALS0401LLS No For tubing line sets between 50 and 175 ft or more than 20 ft vertical differential refer to Application Guideline and Service Manual for Residential Split System Air Conditioners and Heat Pumps using Puron Refrigerant Required for all applications TABLE 3 REQUIRED LIQUID LINE TEMPERATURE F LIQUID PRESSURE AT REQUIRED SUBCOOLING TEMPERATURE SERVICE VALVE PSIG 174 181 188 195 202 209 216 C REFRIGERANT TUBING AND FILTER DRIER A CAUTION Installation of filter drier in liquid line is required Connect vapor tubing to fittings on outdoor unit vapor service valve Connect liquid tubing to filter drier See Table 1 and Fig 9 Use refrigerant grade tubing Connect other end of filter drier to adapter tube on liquid service valve D SWEAT CONNECTION CAUTION To avoid valve damage while brazing ser AN vice valves must be wrapped in a heat sinking material such as a wet cloth Wrap service valves and filter
17. IT SIZE 024 036 060 A98532 Fig 4 Accessory Support Feet IV OPERATING AMBIENT The minimum outdoor operating ambient in cooling mode is 55 F and the maximum outdoor operating ambient in cooling mode is 125 F V ELEVATE UNIT A CAUTION Accumulation of water and ice in base pan may cause equipment damage Elevate unit per local climate and code requirements to provide clearance above estimated snowfall level and ensure adequate drainage of the unit Fig 4 shows unit with accessory support feet installed Use accessory snow stand in areas where prolonged freezing temperatures are encountered Refer to separate Installa tion Instructions packaged with accessories COIL SENSING BULB EQUALIZER TUBE THERMOSTATIC E EXPANSION VALVE A91
18. ONTROL MODEL RH RVS COOLING FV4 FK4 TWO SPEED FAN COIL HEAT PUMP COOL HEAT STAGE 1 HEAT STAGE 3 COOL HEAT STAGE 2 FAN 24 VAC HOT DEHUMIDIFY DHUMP 24VAC COMM C f HUMIDIFY HUM N A B OUTDOOR S1 SENSOR CONNECTION _S2 G J REMOVE J1 of See notes 1 2 3 and 4 A01476 See notes 1 2 3 6 9 and 10 A01429 THERMIDISTAT CONTROL MODEL RH RVS COOLING COOL HEAT STAGE 1 HEAT STAGE 3 COOL HEAT STAGE 2 FAN Gr 24 VAC HOT Rr 24 VAG COMM c N A Prun HUMIDIFY HUM N A Le OUTDOOR si SENSOR TWO SPEED HEAT PUMP SINGLE STAGE FURNACE a4 i __ 5 RUMIDIFIERI_D_ 24 VAC OUTDOOR 3 SENSOR I CONNECTION 82 H See notes 1 2 3 7 8 9 10 and 11 PROGRAMMABLE DUAL FUEL THERMOSTAT MODEL DF A01422 SINGLE STAGE TWO SPEED FURNACE HEAT PUMP 24 VAC HOT FAN p HEAT STAGE 3 FURNACE COOL HEAT STAGE 2 COMPRESSOR HI cL E 2 5 RVS COOLING COOL HEAT ba Y STAGE 1 COMPRESSOR LO d s 24 VAC COM N A RVS SENSING OUTDOOR SENSOR zl AM SENSOR Lin 4 CONNECTIONS THERMIDISTAT CONTROL MODEL RH RVS COOLING COOL HEAT STAGE 1 HEAT STAGE 3 COOL HEAT STAGE 2 FAN 24 VAC HOT
19. PM operation Refer to Table 7 for correct winding resistance COMPRESSOR INTERNAL RELIEF The compressor is protected by an internal pressure relief IPR which relieves discharge gas into compressor shell when differen tial between suction and discharge pressures exceeds 525 psi The compressor is also protected by an internal overload attached to motor windings COMPRESSOR CONTROL CONTACTORS Low and High capacity contactor coils are 24 volts The electronic control board controls the operation of the low speed C L and the high speed C H contactors O TEMPERATURE THERMISTORS Thermistors are electronic devices which sense temperature As the temperature increases the resistance decreases Thermistors are used to sense outdoor ambient and coil temperature Refer to Fig 16 for resistance values versus temperature If the outdoor ambient thermistor or coil thermistor should fail a fault code appears at electronic control The crankcase heater is turned on during all off cycles IMPORTANT OUTDOOR AIR THERMISTOR PLACEMENT Mount outdoor air thermistor underneath unit base pan lip on control box side of unit as shown in Fig 17 Attach to base pan with adhesive tape or other field expedient means IMPORTANT If outdoor air thermistor is nor properly placed underneath base pan unit may have nuisance thermistor out of range faults TABLE 6 FACTORY DEFAULTS FAILED COMPONENT FUNCTION DEFAULT Ambient Thermistor Defrost Init
20. e Installation Instructions for setting required airflow High speed airflow is determined by the position of the A C switches and low speed airflow is determined by the position of the CF switches C AIRFLOW SELECTION FOR FK4 OR FV4 FAN COILS The FK4 and FV4 provide high and low speed blower operation to match the capacities of compressor at high and low speeds To select recommended airflow refer to the FK4 or FV4 Installation Instructions The FK4 and FV4 utilize an EASY SELECT control board that allows the installing technician to select proper airflow The ORANGE SYSTEM TYPE JUMPER wire should be set to HP EFF or HP COMFORT The BLUE AC HP SIZE JUMPER is used to select airflow to match the outdoor unit nominal size in tons of cooling The BLACK AC HP CFM ADJUST jumper is used to make slight adjustments to the selected airflow tonnage See the fan coil Installation Instructions for setting required airflow This fan coil has an adjustable blower off delay factory set at 90 sec for high and low speed blower operation XI START UP CAUTION To prevent compressor damage or personal injury observe the following Do not overcharge system with refrigerant Do not operate unit in a vacuum or at negative pressure Do not disable low pressure switch CAUTION To prevent personal injury wear safety glasses protective clothing and gloves when handling refrigerant and observe the following Back seating service valves are
21. e of start relay to pick up properly improper wiring M PRESSURE SWITCH PROTECTION The outdoor unit is equipped with high and low pressure switches If the control senses the opening of the high or low pressure switch it will respond as follows 1 De energize the compressor hi or low speed contactor 2 Keep the outdoor fan operating for 15 minutes 3 Display the appropriate error code on the status light see Table 4 4 After a 15 minute delay if Yl or Y2 inputs are on and the LPS or HPS is reset energize appropriate compressor contactor either low or high 5 If LPS or HPS has not closed after 15 minute delay outdoor fan is turned off If the open switch closes anytime after the 15 minute delay then resume operation on call for Y1 and or Y2 N MAJOR COMPONENTS TWO SPEED CONTROL The two speed control board controls the following functions Low and high compressor contactor operation Outdoor fan motor operation Crankcase heater operation Compressor protection Pressure switch monitoring Time delays Time temperature defrost Defrost interval selection Electric heat operation during defrost mode FIELD CONNECTIONS The two speed dual capacity control received 24v low voltage control system inputs through the screw connections on the left side of the control board TWO SPEED DUAL CAPACITY COMPRESSOR The two speed dual capacity compressor contains motor windings that provide 3500 R
22. ge heating are satisfied the compressor will shut off See thermostat Installation Instructions for more staging information NOTE If unit has not operated within the past 12 hr or following a unit power up upon the next thermostat high or low speed demand unit operates for a minimum of 5 minutes on high speed THERMISTOR CURVE ao xo o o gt y e o eo a o RB eo RESISTANCE KOHMS o to eo o eo 0 20 40 60 80 TEMPERATURE DEG F 100 120 A91431 Fig 16 Resistance Values Versus Temperature Control Box Side of Unit WITH ADHESIVE A02218 Fig 17 View from Top of Base Pan THERMISTOR PLACED UNDERNEATH BASE PAN ATTACHED TO BASE PAN D STATUS FUNCTION LIGHTS A system control STATUS function light is located on the outdoor unit control board See Fig 15 The STATUS light provides signals for several system operations See Table 4 for codes and definitions Table 4 also provides the order of signal importance NOTE Only one code will be displayed on the outdoor unit control board the most recent with the highest priority E FACTORY DEFAULTS Factory defaults have been provided in the event of failure of outdoor air thermistor and or outdoor coil thermistor Refer to Table 6 for default and function F COMPRESSOR OPERATION When the compressor operates in two capacity operation the motor
23. gize system XII CHECK CHARGE 5 Set room thermostat at desired temperature Be sure the set point is below indoor ambient and is set low enough to energize desired speed WARNING Service valve gage ports are not equipped with Schrader valves To prevent personal injury make AN sure gage manifold is connected to the valve gage ports 6 Set room thermostat to COOL or HEAT and fan control to before moving valves off fully back seated position Wear AUTO or ON as desired Wait for appropriate time delay s safety glasses and gloves when handling refrigerant Operate unit for 15 minutes Check refrigerant charge NOTE Bryant electronic thermostats are equipped with a 15 minute staging timer This timer prevents the dual capacity system A UNIT CHARGE from operating at high capacity until unit has been operating in low capacity for 15 minutes unless there is at least a 5 F difference Factory charge is shown on unit rating plate To check charge in between room temperature and thermostat set point To force high cooling mode refer to Cooling Only Procedure To charge in capacity adjust the set point at least 5 below room ambient for heating mode weigh the charge in cooling or 5 above room ambient for heating FK4 FV4 TWO SPEED FAN COIL HEAT PUMP 24 VAC HOT 24 VAC COM FAN COOL HEAT STAGE 2 HEAT STAGE 3 RVS COOLING COOL HEAT STAGE 1 N A OUTDOOR SENSOR CONNECTION A00333 Fig 14 Typical Solenoid Val
24. iation Defrost is initiated based on coil temperature and time Outdoor Coil Thermistor Defrost Initiation and Termination Defrost occurs at each time interval but terminate after 5 minutes XIV FINAL CHECKS IMPORTANT Before leaving job be sure to do the following 1 Ensure that all wiring and tubing is secure in unit before adding panels and covers Securely fasten all panels and covers TABLE 7 TWO SPEED COMPRESSOR WINDING RESISTANCE AT 70 F 20 WINDING 2TON 3TON 4TON STON Start S C 2 280 1 850 1 459 0 740 Run R C 0 770 0 745 0 552 0 356 14 2 Tighten service valve stem caps to 1 12 turn past finger tight 3 Leave User s Manual with owner Explain system operation and periodic maintenance requirements outlined in manual 4 Fill out Dealer Installation Checklist and place in customer file CARE AND MAINTENANCE For continuing high performance and to minimize possible equip ment failure periodic maintenance must be performed on this equipment Frequency of maintenance may vary depending upon geographic areas such as coastal applications DUAL CAPACITY A CONNECTION DIAGRAM L1 208 230 1 60 L2 POWER SUPPLY te o EQUIP GND BLK 7j NOTE 11 o f orn ORN PP ui BLU BLK 1 2 3 HP AC C SEV
25. installation and start up instructions TWO SPEED PURON PLUS HEAT PUMP WITH PURON REFRIGERANT NOTE Read the entire instruction manual before starting the installation 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 Follow all safety codes Wear safety glasses protective clothing and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thor oughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and National Electrical Code NEC for special requirements Recognize safety information This is the safety alert symbol AN When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING and CAU TION These words are used with the safety alert symbol DAN GER identifies the most serious hazards which will result in severe personal injury o
26. latform 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 CAUTION Do not allow POE lubricant to come into AN contact with roofing material POE may deteriorate cer tain types of synthetic roofing Roof mounted units exposed to winds above 5 mph may require wind baffles Consult the Application Guideline and Service Manual for Residential Split System Air Conditioners and Heat Pumps using Puron Refrigerant for wind baffle construction NOTE Unit must be level to within 2 53 8 in ft per compressor manufacturer specifications Ill CLEARANCE REQUIREMENTS When installing allow sufficient space for airflow clearance wiring refrigerant piping and service Allow 30 in clearance to service end of unit and 48 in above unit For proper airflow a 6 in clearance on 1 side of unit and 12 in on all remaining sides must be maintained Maintain a distance of 24 in 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 above roof surface 36 IN DIA TIEDOWN KNOCKOUTS 2 PLACES IN BASEPAN A97375 MINIMUM MOUNTING PAD DIMENSIONS Support Feet Snow Stand 19 X 24 26 X 32 TIEDOWN KNOCKOUT LOCATIONS UN
27. move and save TXV support clamp using a 5 16 in nut driver 4 Remove TXV using a backup wrench on flare connections to prevent damage to tubing 5 Using wire cutters cut equalizer tube off flush with vapor tube inside cabinet 6 Remove bulb from vapor tube inside cabinet 7 Braze equalizer stub tube closed Use protective barrier as necessary to prevent damage to drain pan IMPORTANT Route the equalizer tube of approved Puron TXV through suction line connection opening in fitting panel prior to replacing fitting panel around tubing 8 Install TXV Fig 6A with 3 8 in copper inlet tube through small hole in service panel Use wrench and backup wrench to avoid damage to tubing valve 9 Reinstall TXV support clamp removed in item 3 10 Attach TXV bulb to vapor tube inside cabinet in same location as original was removed using supplied bulb straps See Fig 6C Insulate bulb with factory supplied insulation tape See Fig 6E See Fig 7 for correct positioning of sensing bulb 11 Route equalizer tube through suction connection opening large hole in fitting panel and install fitting panel in place 12 Sweat inlet of TXV marked IN to liquid line Avoid excessive heat which could damage valve 13 Install vapor elbow See Fig 6B with equalizer adapter to vapor line of line set and vapor connection to indoor coil Adapter has a 1 4 in male flare connector for attaching equalizer tube See Fig 6B 1
28. ns packaged with kits or acces sories when installing The liquid line solenoid valve accessory is available on these units See Fig 14 for wiring diagram See Fig 13 for typical accessory wiring diagrams X MAKE AIRFLOW SELECTIONS A AIRFLOW SELECTION FOR 315AAV 315JAV FUR NACES The 315AAV 315JAV Non Condensing Variable Speed Furnaces provide high and low speed blower operation to match the capacities of the compressor at high and low speeds To select the m m recommended airflow and for adjustments to the manual switches labeled SW1 A C and CF on the control board refer to the furnace Installation Start Up and Operating Instructions The 315AAV 315JAV utilizes a control center that allows the install ing technician to select the proper airflows The A C switch determines the airflow during high speed compressor operation Airflow for high and low speed can be calculated at either 350 CFM per ton or 400 CFM per ton based on the positions of SW1 5 B AIRFLOW SELECTION FOR 355MAV FURNACES The 355MAV Condensing Variable Speed Furnaces provide high and low speed blower operation to match the capacities of com pressor at high and low speeds To select recommended airflow refer to the 355MAV Installation Instructions The 355MAV utilizes a control center that allows the installing technician to select proper airflow For adjustments to the manual switches labeled A C and CF and recommended switch positions refer to Furnac
29. o not use chart to adjust refrigerant charge CEBD430439 03A SSOID R38 3 L6 RSI 8 77 DEFROST TIME MIN A B C D ne e CESOI1 aE NOTE In heating mode check refrigerant charge only when pressures are stable If accessory vapor pressure switch is applied and operating conditions cause vapor pressure switch and thereby outdoor fan to cycle check refrigerant charge in cooling or lower indoor dry bulb temperature If in doubt remove charge and weigh in correct refrigerant charge NOTE When charging is necessary during heating season charge must be weighed in accordance with unit rating plate 0 6 oz ft of 3 8 in liquid line above or below 15 ft respectively EXAMPLE To calculate additional charge required for a 25 ft line set 25 ft 15 ft 10 ft X 0 6 oz ft 6 oz of additional charge XIII SYSTEM FUNCTIONS AND SEQUENCE OF OP ERATION The outdoor unit control system has special functions The following is an overview of the two speed control functions A COOLING OPERATION This product utilizes a 2 stage cooling indoor thermostat With a call for first stage cooling Y1 the outdoor fan and low capacity compressor are energized If low capacity cannot satisfy cooling demand high capacity is energized Yl and Y2 or just Y2 by the second stage of indoor thermostat After second stage is satisfied the unit returns to low capacity operation until first stage is satisfied or until second stage is re
30. quid water See Fig 10 TRIPLE EVACUATION METHOD The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in of mercury and system does not contain any liquid water Refer to Fig 11 and proceed as follows 1 Pump system down to 28 in of mercury and allow pump to continue operating for an additional 15 minutes 2 Close service valves and shut off vacuum pump 3 Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig 4 Close service valve and allow system to stand for 1 hr During this time dry nitrogen will be able to diffuse throughout the system absorbing moisture 5 Repeat this procedure as indicated in Fig 11 System will then contain minimal amounts of contaminants and water vapor LIQUID LINE FILTER DRIER LIQUID SERVICE A97555 Fig 9 Filter Drier with Sweat Adapter Tube and Liquid Tube eL 5000 4500 4000 9 ro e 2500 9 2000 1500 1000 500 LEAK IN SYSTEM VACUUM TIGHT TOO WET TIGHT DRY SYSTEM 0 1 2 3 4 5 6 7 MINUTES A95424 Fig 10 Deep Vacuum Graph EVACUATE v BREAK VACUUM WITH DRY NITROGEN v WAIT EVACUATE BREAK VACUUM WITH DRY NITROGEN WAIT EVACUATE E CHECK FOR TIGHT DRY SYSTEM IF IT HOLDS DEEP VACUUM Y CHARGE SYSTEM Fig 11 Triple Evacuation Method G FINAL TUBING CHECK IMPORTANT Check to be certain factory tubing on both
31. quired again When both one stage and two stage cooling are satisfied the compressor will shut off NOTE Outdoor fan motor will continue to operate for one minute after compressor shuts off when outdoor ambient is greater than 100 F 0 uc otro I9 A PL1 PL2 D z D w E c l w c J lt m r CEPL130439 01 a m v CCH L2 ODF A00379 Fig 15 Control Board NOTE When two speed unit is operating in low capacity cool ing system vapor suction pressure will be higher than a standard single speed system or high speed operation This normal opera tion is due to the reduced capacity operating with typically larger indoor and outdoor coils B ONE MINUTE SPEED CHANGE TIME DELAY When compressor changes speeds from high to low or low to high there is a 1 minute time delay before compressor restarts The outdoor fan motor remains running C HEATING OPERATION This product utilizes a 3 stage heating indoor thermostat With a call for first stage heating Y 1 the outdoor fan and low capacity compressor are energized If low capacity cannot satisfy heating demand high capacity is energized Y1 and Y2 by the second stage of the indoor thermostat Auxiliary or back up heat is controlled by third stage W1 After second stage of heat is satisfied the unit returns to low capacity operation until first stage is satisfied or until second stage is required again When both one stage and two sta
32. r 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 WARNING Before installing modifying or servicing system main electrical disconnect switch must be in the A OFF position There may be more than 1 disconnect switch Lock out and tag switch with a suitable warning label Electrical shock can cause personal injury or death CAUTION Puron R 410A systems operate at higher pressures than standard R 22 systems Be certain that A service equipment is rated for R 410A Some R 22 service equipment may not be acceptable Check with your distributor INSTALLATION RECOMMENDATIONS NOTE 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 Ensure that vapor and liquid tube diameters are appropriate to capacity of unit 3 Run refrigerant tubes as directly as possible by avoiding unnecessary turns and bends Cancels 698B 24 3 Il 698B 24 4 2 03
33. r failure Outdoor coil thermistor failure Thermistor out of ranget Low pressure switch trip High pressure switch trip Compressor V V trip Board failure TABLE 5 DEFROST DIP SWITCH SETTINGS DIP SWITCH 1 DIP SWITCH 2 After termination of a defrost cycle the outdoor fan delays come on for 20 sec This allows refrigerant system to recover outdoor coil heat and minimize the steam cloud effect DEFROST TIME SELECTION The defrost interval can be field selected dependent on local or geographical requirements It is factory set at 90 minutes but can be changed to either 30 60 or 120 minutes To select defrost time set dip switches located on the left side of the unit board See Fig 15 See Table 5 for Defrost Dip Switch Settings J DEFROST The dual capacity control logic for defrost function is the standard time and temperature initiated time or temperature terminated Defrost only occurs at outdoor temperatures less than 50 F The control initiates defrost when outdoor coil thermistor is 30 F 2 or less and selected defrost time interval has been accumulated during unit operation Termination occurs when coil thermistor reaches 80 F 55 or defrost period reaches a maximum of 10 minutes Defrost will occur at the compressor capacity that is being called for During defrost unit operates in high or low capacity energizes reversing valve O and auxiliary heat W
34. t and or 20 ft vertical differential 2 Do not increase or decrease tubing sizes 3 If required by local codes Pressure Guard kit is available See Product Data Sheet for part numbers moisture in the system Do not leave system open to atmosphere any longer than minimum required for installation POE oil in compressor is extremely susceptible to moisture absorption Al ways keep ends of tubing sealed during installation A OUTDOOR UNIT CONNECTED TO FACTORY APPROVED INDOOR UNIT These outdoor units are carefully evaluated and listed with specific indoor coils for proper system performance IMPORTANT Do not apply indoor coils which are not factory approved to these units IMPORTANT For 036 size units matched with the FV FK005 or FV FK006 and the 698BNX048 matched with the FV FKO006 a piston change is required Refer to the KHAPX0201BPA Instal lation Instructions for details B INSTALL ADAPTER TUBE 1 Remove plastic retainer holding outdoor piston in liquid service valve 2 Check to be sure outdoor piston is properly installed in liquid service valve 3 Locate plastic bag taped to unit containing adapter tube 4 Remove Teflon washer from bag and install on open end of liquid service valve See Fig 8 5 Remove adapter tube from bag and connect threaded nut to liquid service valve Tighten nut finger tight and then with wrench an additional 1 2 turn 15 ft lb DO NOT OVER TIGHTEN TABLE 2 ACCESSORY US
35. ve Wiring 10 Adjust charge in both heating and cooling by following procedure shown on charging tables located on pink charging label on back side of access panel NOTE Unit is to be charged in high capacity only Charging in low capacity may cause compressor chattering and possible damage to the compressor B COOLING ONLY PROCEDURE 1 Operate unit a minimum of 15 minutes before checking charge 2 Measure liquid service valve pressure by attaching an accurate gage to service port 3 Measure liquid line temperature by attaching an accurate thermistor type or electronic thermometer to liquid line near outdoor coil 4 Refer to charging label for required subcooling tempera tures 5 Refer to Table 3 Find the point where required subcooling temperature intersects measured liquid service valve pres sure 6 To obtain required subcooling temperature at a specific liquid line pressure add refrigerant if liquid line tempera ture is higher than indicated or reclaim refrigerant if temperature is lower Allow a tolerance of 3 F C HEATING CHECK CHARGE PROCEDURE To check system operation during heating cycle refer to the Heating Pump Charging Instructions on outdoor unit This chart indicates whether a correct relationship exists between system operating pressure and air temperature entering indoor and outdoor units If pressure and temperature do not match on chart system refrigerant charge may not be correct D
36. wiring hole provided and into unit control box Size wires per NEC but not smaller than minimum wire size shown in Product Data Sheet WARNING The unit cabinet must have as uninter rupted or unbroken ground to minimize personal injury if an electrical fault should occur The ground may consist A of electrical wire or metal conduit when installed in accordance with existing electrical codes Failure to follow this warning can result in an electric shock fire or death B CONNECT GROUND AND POWER WIRES Connect ground wire to ground connection in control box for safety Connect power wiring to leads provided as shown in Fig 12 C CONNECT CONTROL WIRING Route 24v control wires through control wiring grommet and connect to leads provided in control box See Fig 13 Use No 18 AWG color coded insulated 35 C minimum wire If thermostat is located more than 100 ft from unit as measured along the control voltage wires use No 16 AWG color coded wire to avoid excessive voltage drop All wiring must be NEC Class 1 and must be separated from incoming power leads The outdoor unit requires a minimum of 27va 24v control power D FINAL WIRING CHECK IMPORTANT Check factory wiring and wire connections to ensure terminations are secured properly Check wire routing to ensure wires are not in contact with tubing sheet metal etc IX INSTALL ELECTRICAL ACCESSORIES A GENERAL Refer to the individual instructio
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