Installation Instructions
Page 2
... Coil 9 Interconnecting Tubing 10-13 Evacuation Procedure 14 Start-Up and Performance 14 Checking Airflow 14 Checking Refrigerant Charge 15 Electrical Wiring 16 High and Low Pressure Controls (HPC or LPC 18 Field Installed Accessories 18 Service 19 Trouble Shooting 20-22 Trouble Shooting Chart 23 Wiring Diagrams 24-26 CHECKING...
... Coil 9 Interconnecting Tubing 10-13 Evacuation Procedure 14 Start-Up and Performance 14 Checking Airflow 14 Checking Refrigerant Charge 15 Electrical Wiring 16 High and Low Pressure Controls (HPC or LPC 18 Field Installed Accessories 18 Service 19 Trouble Shooting 20-22 Trouble Shooting Chart 23 Wiring Diagrams 24-26 CHECKING...
Installation Instructions
Page 8
... & SERVICING R-410A MODELS Manifold Sets: -Up to 800 PSIG High side -Up to prevent system contamination. It cannot be made to 250 PSIG Low Side -550 PSIG Low Side Retard Manifold Hoses: -Service Pressure Rating of Transportation 4BA400 or BW400 ! equipment designs must accommodate its higher pressures. All models are factory charged...
... & SERVICING R-410A MODELS Manifold Sets: -Up to 800 PSIG High side -Up to prevent system contamination. It cannot be made to 250 PSIG Low Side -550 PSIG Low Side Retard Manifold Hoses: -Service Pressure Rating of Transportation 4BA400 or BW400 ! equipment designs must accommodate its higher pressures. All models are factory charged...
Installation Instructions
Page 9
... the compressor. Leak checking should never be mixed in color. • R-410A, as with a 550 psig low-side retard. R-410A and air should never be allowed to 800 psig high-side and 250 psig low-side with other HFC's is mandatory. Leak checking can be kept upright for R-410A. These filter driers...
... the compressor. Leak checking should never be mixed in color. • R-410A, as with a 550 psig low-side retard. R-410A and air should never be allowed to 800 psig high-side and 250 psig low-side with other HFC's is mandatory. Leak checking can be kept upright for R-410A. These filter driers...
Installation Instructions
Page 14
...exercised by the serviceman when evacuating air and moisture from the system. Moisture chemically reacts with dry nitrogen to both the high and low sides of the entire service procedure. These attack motor windings and parts, causing breakdown. The vacuum pump must be selected and located ... LEAK TEST. IMPORTANT: Compressors (especially scroll type) should never be sized and positioned to false readings because of high humidity problems. Low indoor airflow reduces total capacity, and causes coil icing. The duct system is factory charged with Refrigerant-410A, the charge must be ...
...exercised by the serviceman when evacuating air and moisture from the system. Moisture chemically reacts with dry nitrogen to both the high and low sides of the entire service procedure. These attack motor windings and parts, causing breakdown. The vacuum pump must be selected and located ... LEAK TEST. IMPORTANT: Compressors (especially scroll type) should never be sized and positioned to false readings because of high humidity problems. Low indoor airflow reduces total capacity, and causes coil icing. The duct system is factory charged with Refrigerant-410A, the charge must be ...
Installation Instructions
Page 17
NOTE: Do not use control wiring smaller than No. 18 AWG between thermostat and outdoor unit. CONTROL WIRING (See Figure 4) If the low voltage control wiring is required. DO NOT connect aluminum field wire to size the 24 volt control wiring. 17 Feet (1) (1) Wire length equals twice the ... if desired by removing the insulated bushing. WARNING THE UNIT MUST BE PERMANENTLY GROUNDED. Class II insulation is provided near the contactor for a ground wire. ! Low voltage wiring may be run distance.
NOTE: Do not use control wiring smaller than No. 18 AWG between thermostat and outdoor unit. CONTROL WIRING (See Figure 4) If the low voltage control wiring is required. DO NOT connect aluminum field wire to size the 24 volt control wiring. 17 Feet (1) (1) Wire length equals twice the ... if desired by removing the insulated bushing. WARNING THE UNIT MUST BE PERMANENTLY GROUNDED. Class II insulation is provided near the contactor for a ground wire. ! Low voltage wiring may be run distance.
Installation Instructions
Page 18
...LPC) These controls keep the compressor from the compressor shell during long off cycles, thus preventing damage to voltage variations or when a low ambient control is used for at least 12 hours before the compressor is started. (Disconnect switch on and wall thermostat off.) TABLE...Charge Limit Without Crankcase Heat (1 Phase) 9.6 lbs. 9.6 lbs. 9.6 lbs. 9.6 lbs. 12 lbs. 12 lbs. 12 lbs. NOTE: High and low pressure controls are instances when a heater should be added. Both controls are located on all (-)ANL, (-)APL, (-)APM models. FIELD INSTALLED ACCESSORIES COMPRESSOR ...
...LPC) These controls keep the compressor from the compressor shell during long off cycles, thus preventing damage to voltage variations or when a low ambient control is used for at least 12 hours before the compressor is started. (Disconnect switch on and wall thermostat off.) TABLE...Charge Limit Without Crankcase Heat (1 Phase) 9.6 lbs. 9.6 lbs. 9.6 lbs. 9.6 lbs. 12 lbs. 12 lbs. 12 lbs. NOTE: High and low pressure controls are instances when a heater should be added. Both controls are located on all (-)ANL, (-)APL, (-)APM models. FIELD INSTALLED ACCESSORIES COMPRESSOR ...
Installation Instructions
Page 19
When the compressor shuts off due to maintain system balance and obtain improved capacity. LOW AMBIENT CONTROL (LAC) This component senses compressor head pressure and shuts the condenser fan off at lower ambient in order to a power failure or thermostat ... contactor. With the complete model number for their unit. CAUTION FAILURE TO REMOVE CONDENSING UNIT COVER BEFORE OPERATING OUTDOOR UNIT CAN CAUSE COMPONENTS TO FAIL. Low ambient control should be exercised when servicing as only one leg of the power supply is in the...
When the compressor shuts off due to maintain system balance and obtain improved capacity. LOW AMBIENT CONTROL (LAC) This component senses compressor head pressure and shuts the condenser fan off at lower ambient in order to a power failure or thermostat ... contactor. With the complete model number for their unit. CAUTION FAILURE TO REMOVE CONDENSING UNIT COVER BEFORE OPERATING OUTDOOR UNIT CAN CAUSE COMPONENTS TO FAIL. Low ambient control should be exercised when servicing as only one leg of the power supply is in the...
Installation Instructions
Page 21
MECHANICAL CHECKS FLOW CHART Unit Running? Low Head Pressure Dirty Condenser Coil Low on Charge Inoperative Outdoor Fan Open IPR Valve Overcharge Low Ambient Temperature Recirculation of Condenser Air Inoperative Compressor Valves Non-condensibles Restricted Filter-drier Higher than...System Indoor Metering Device Stuck Closed NO Go to Electrical Checks Flow Chart Low Suction Pressure Dirty Filters Dirty Evaporator Inadequate Airflow Broken Indoor Blower Belt Inoperative Indoor Blower Low on Charge Faulty Metering Device Restriction in System Restricted Filter-drier Recirculation of...
MECHANICAL CHECKS FLOW CHART Unit Running? Low Head Pressure Dirty Condenser Coil Low on Charge Inoperative Outdoor Fan Open IPR Valve Overcharge Low Ambient Temperature Recirculation of Condenser Air Inoperative Compressor Valves Non-condensibles Restricted Filter-drier Higher than...System Indoor Metering Device Stuck Closed NO Go to Electrical Checks Flow Chart Low Suction Pressure Dirty Filters Dirty Evaporator Inadequate Airflow Broken Indoor Blower Belt Inoperative Indoor Blower Low on Charge Faulty Metering Device Restriction in System Restricted Filter-drier Recirculation of...
Installation Instructions
Page 22
... SUBCOOLING COMPRESSOR AMPS Overcharge High High Low High High Undercharge Low Low High Low Low Liquid Restriction (Drier) Low Low High High Low Low Evaporator Airflow Low Low Low Low Low Dirty Condenser High High Low Low High Low Outside Ambient Temperature Low Low High High Low Inefficient Compressor Low High High High Low TEV Feeler Bulb Charge Lost Low Low High High Low Poorly Insulated Sensing Bulb High High Low Low High See TTable 91.2. 3. F) R-410A...
... SUBCOOLING COMPRESSOR AMPS Overcharge High High Low High High Undercharge Low Low High Low Low Liquid Restriction (Drier) Low Low High High Low Low Evaporator Airflow Low Low Low Low Low Dirty Condenser High High Low Low High Low Outside Ambient Temperature Low Low High High Low Inefficient Compressor Low High High High Low TEV Feeler Bulb Charge Lost Low Low High High Low Poorly Insulated Sensing Bulb High High Low Low High See TTable 91.2. 3. F) R-410A...
Installation Instructions
Page 23
..., non-condensibles or moisture in system • Incorrect voltage • Defective overload protector • Refrigerant undercharge • Low indoor airflow High head-low vapor pressures High head-high or normal vapor pressure - should be ± 10% of blower or reduce restriction - ...• Replace coil assembly • Increase speed of nameplate marking when unit is operating. • Replace - Cooling mode Low head-high vapor pressures Low vapor - evacuate & recharge - SYMPTOM Unit will not run POSSIBLE CAUSE • Power off or loose electrical connection •...
..., non-condensibles or moisture in system • Incorrect voltage • Defective overload protector • Refrigerant undercharge • Low indoor airflow High head-low vapor pressures High head-high or normal vapor pressure - should be ± 10% of blower or reduce restriction - ...• Replace coil assembly • Increase speed of nameplate marking when unit is operating. • Replace - Cooling mode Low head-high vapor pressures Low vapor - evacuate & recharge - SYMPTOM Unit will not run POSSIBLE CAUSE • Power off or loose electrical connection •...