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508270-01M

Issue 2225

(P) 508270-01M

*P508270-01M*

Manufactured By

Comfort-Aire / Century

1900 Wellworth Ave.

Jackson, MI 49203

Table of Contents

General ........................................................................2

Installation ...................................................................2

Refrigeration Piping .....................................................4

Electrical – Circuit Sizing and Wire Routing ..............11

Start-Up Procedure....................................................12

Operation ...................................................................13

Control Board Diagnostics and Test Mode ................15

Maintenance ..............................................................18

Homeowner Information ............................................18

Failure to follow instructions will cause damage to the

unit.
This unit is equipped with an aluminum coil. Aluminum

coils may be damaged by exposure to solutions with

a pH below 5 or above 9. The aluminum coil should

be cleaned using potable water at a moderate pressure

(less than 50psi). If the coil cannot be cleaned using

water alone, it is recommended to use a coil cleaner

with a pH in the range of 5 to 9. The coil must be rinsed

thoroughly after cleaning.
In coastal areas, the coil should be cleaned with potable

water several times per year to avoid corrosive buildup

(salt).

NOTICE

This manual must be left with the homeowner for future reference.

This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to

the potential for personal injury or death.

Installation and servicing of air conditioning equipment

can be hazardous due to internal refrigerant pressure

and live electrical components. Only trained and

qualified service personnel should install or service

this equipment. Installation and service performed by

unqualified persons can result in property damage,

personal injury, or death.

WARNING

Sharp metal edges can cause injury. When installing

the unit, use care to avoid sharp edges.

WARNING

ELECTRICAL SHOCK HAZARD!

Risk of electrical shock. Disconnect all

remote power supplies before installing

or servicing any portion of the system.

Failure to disconnect power supplies

can result in property damage, personal

injury, or death.

WARNING

INSTALLATION INSTRUCTIONS

HRG15

Single Stage Heat Pump

Содержание HRG15

Страница 1: ...eaned with potable water several times per year to avoid corrosive buildup salt NOTICE This manual must be left with the homeowner for future reference This is a safety alert symbol and should never be ignored When you see this symbol on labels or in manuals be alert to the potential for personal injury or death Installation and servicing of air conditioning equipment can be hazardous due to inter...

Страница 2: ...installed on a solid foundation This foundation should extend a minimum of 2 inches beyond the sides of the outdoor section To reduce the possibility of noise transmission the foundation slab General Read this entire instruction manual as well as the instructions supplied in separate equipment before starting the installation Observe and follow all warnings cautions instructional labels and tags F...

Страница 3: ...48 Between units 24 Against wall 6 Maximum soffit overhang is 36 NOTE At least one side should be unobstructed by a wall or other barrier Table 2 Clearances 30 around Control Box 24 6 Figure 2 NOTE See Table 2 for specific minimum clearance guidelines DO LOCATE THE UNIT With proper clearances on sides and top of unit On a solid level foundation or pad unit must be level to within 1 4 in ft per com...

Страница 4: ...8 042 3 8 3 8 7 8 7 8 048 3 8 3 8 7 8 7 8 060 3 8 3 8 1 1 8 1 1 8 Field supplied 7 8 x 1 1 8 connector required on both ends of vapor tubing Table 3 Recommended Liquid Vapor Tube Diameters in Be extra careful with sharp bends Tubing can kink very easily and if this occurs the entire tube length will have to be replaced Extra care at this time will eliminate future service problems It is recommende...

Страница 5: ... UNIT VAPOR LINE SERVICE VALVE VAPOR LIQUID 1 A B C D A Cylinder with clean R 410A positioned to deliver liquid refrigerant to the vapor service valve B Refrigerant gauge set low side to the liquid line valve C Refrigerant gauge set center port to inlet on the recovery machine with an empty recovery tank connected to the gauge set D Connect recovery tank to recovery machine per machine instruction...

Страница 6: ...l Shown Sensing bulb insulation is required if mounted external to the coil casing sensing bulb installation for bulb positioning STUB END TEFLON RING LIQUID LINE ASSEMBLY WITH BRASS NUT DISTRIBUTOR ASSEMBLY 3 Install one of the provided Teflon rings around the stubbed end of the check expansion valve and lightly lubricate the connector threads and expose surface of the Teflon ring with refrigeran...

Страница 7: ...round Do not crimp end of the line Remove service cap and core from both the vapor and liquid line service ports 1 2 LIQUID LINE SERVICE VALVE SERVICE PORT CORE SERVICE PORT CAP SERVICE PORT CORE SERVICE PORT CAP CUT AND DEBUR LINE SET SIZE MATCHES SERVICE VALVE CONNECTION DO NOT CRIMP SERVICE VALVE CONNECTOR WHEN PIPE IS SMALLER THAN CONNECTION 3 VAPOR LINE SERVICE VALVE COPPER TUBE STUB REFRIGER...

Страница 8: ...VES POINT FLAME AWAY FROM SERVICE VALVE PREPARATION FOR NEXT STEP 7 WRAP SERVICE VALVES To help protect service valve seals during brazing wrap water saturated cloths around service valve bodies and copper tube stubs Use additionalwater saturated cloths underneath the valve body to protect the base paint 4 FLOW NITROGEN Flow regulated nitrogen at 1 to 2 psig through the refrigeration gauge set int...

Страница 9: ... of the manifold gauge set in order to pressurize the line set and the indoor unit E After a few minutes open one of the service valve ports and verify that the refrigerant added to the system earlier is measurable with a leak detector F After the line set has been connected to the indoor and outdoor units check the line set connections and indoor unit for leaks Use the following procedure to test...

Страница 10: ...quid refrigerant Open the manifold gauge valve 1 to 2 psig in order to release the vacuum in the line set and indoor unit G Perform the following Close manifold gauge valves Shut off HFC 410A cylinder Reinstall service valve cores by removing manifold hose from service valve Quickly install cores with core tool while maintaining a positive system pressure Replace stem caps and finger tighten them ...

Страница 11: ...t breaker may result in property damage Size wiring and circuit breaker s per Product Specifications and unit rating plate WARNING ELECTROSTATIC DISCHARGE ESD Precautions and Procedures Electrostaticdischargecanaffectelectroniccomponents Take care during unit installation and service to protect the unit s electronic controls Precautions will help to avoid control exposure to electrostatic discharg...

Страница 12: ...example of control wiring connections when using a standard thermostat Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring To facilitate a conduit a cutout is located in the bottom of the control panel Connect conduit to the control panel using a proper conduit fitting ROUTING HIGH VOLTAGE GROUND AND CONTROL WIRING WIRE RUN LENGTH AWG INSULATIO...

Страница 13: ...ure auto reset trip at 25 psig reset at 40 5 Add refrigerant if subcooling is lower than table Recover refrigerant if subcooling is high 6 If ambient temp is lower than 60 F check charge in heating mode or weigh refrigerant according to name plate data Heating Mode Check charge in heating mode if ambient temp is below 60 F Indoor temp must be between 65 and 75 F Follow steps 1 to 6 above and compa...

Страница 14: ...ult code Heating and cooling operation will be allowed in this fault condition NOTE The coil temperature probe is designed with a spring clip to allow mounting to the outside coil tubing Coil sensor location is important for proper defrost operation Ambient Sensor The ambient sensor considers outdoor temperatures below 35 F 37 C or above 120 F 48 C as a fault If the ambient sensor is detected as b...

Страница 15: ... F 2 C the control board will initiate a defrost cycle Actuation When the reversing valve is de energized the Y1 circuit is energized and the coil temperature is below 35 F 2 C the board logs the compressor run time If the board is not calibrated a defrost cycle will be initiated after 30 minutes of heating mode compressor run time The control will attempt to self calibrate after this and all othe...

Страница 16: ... not perform demand or time temperature defrost operation System will still heat or cool ON ON Fault Demand Defrost Control Failure Indicates that demand defrost control has internal component failure Cycle 24VAC power to control board If code does not clear replace control board OFF SLOW Flash Fault Low Pressure Fault Restricted air flow over indoor or outdoor coil Improper refrigerant charge in ...

Страница 17: ...hen a jumper is installed on the DELAY pins the compressor will be cycled off for 30 seconds going in and out of the defrost mode Units are shipped with jumper installed on DELAY pins NOTE The 30 second off cycle is NOT functional when TEST pins on P1 are jumpered P6 TST PS DF C R O Y1 Y2 Factory Test Connectors No field use DS1 RED LED Diagnostic LED Control board LEDs may be OFF ON or FLASHING t...

Страница 18: ... bent fins may affect unit operation SHARP OBJECT HAZARD Condenser coils have sharp edges Wear adequate body protection on body extremities e g gloves FAILURE TO FOLLOW THIS WARNING COULD RESULT IN BODILY INJURY WARNING Painted Surfaces For maximum protection of the unit s finish a good grade of automobile wax should be applied every year In geographical areas where water has a high concentration ...

Страница 19: ... the defrost cycle In case of extended power outage If the outdoor temperature is below 50 F and power to your outdoor unit has been interrupted for one hour or longer observe the following when restoring power to your heat pump system Set the room thermostat selector to the Emergency Heat setting to obtain temporary heat for a minimum of 6 hours This will allow system refrigerant pressures and te...

Страница 20: ...508270 01M Page 20 of 21 Issue 2225 Figure 7 Wiring Diagram 018 036 Models ...

Страница 21: ...Page 21 of 21 508270 01M Issue 2225 Figure 8 Wiring Diagram 042 060 Models ...

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