Outdoor Fan Motor
If unit utilizes a
Optional Equipment
Optional equipment requiring connection to the power or control circuits must be wired in strict accordance with current provisions of the NEC (ANSI/NFPA 70), with applicable local codes having jurisdiction, and the installation instructions provided with the equipment. Optional Equipment (low ambient control, hard start kits, etc.) should be installed in strict accordance with the manufacturer’s installation instructions
Transformer Upgrade Kit
If this
(904077). To upgrade the transformer:
•Remove the existing transformer and install the new 60 VA transformer.
•Remove the 3 amp fuse on the furnace control board and install the 5 amp fuse provided.
NOTE: The new transformer may be larger than the existing transformer that is mounted in the furnace. If this happens, mount the 60 VA transformer using one of the mounting holes in the furnace panel. On the other side either drill a 0.149 hole in the panel and use the existing fastener, or use a
STARTUP AND ADJUSTMENTS
The following check list should be observed prior to starting the unit.
√Is the unit level?
√Is the wiring correct according to the wiring diagram and electrical codes?
√Inspect wiring for evidence of open, shorted, and/or improperly wired circuits.
√Are all the wiring connections tight? Check the condenser fan to make sure it turns freely.
√Is the overcurrent protection properly sized?
√Is the thermostat wired correctly? Is it installed in a proper location?
√Verify air fi lters are clean and in place prior to operating the equipment.
√Verify the outdoor coil and top of the unit are free from obstructions and debris, and all equipment access/control panels are in place.
Thermostat
Set the thermostat’s system mode to OFF, the fan mode to AUTO, and adjust the temperature setpoint to its highest setting.
Outdoor Unit
Prior to applying electrical power to the outdoor unit, verify that the unit has been properly and securely grounded, and that power supply connections have been made at both the facility power interface and outdoor unit.
Verify the outdoor coil and top of the unit are free from obstructions and debris, and all equipment access/control panels are in place.
FUNCTIONAL CHECKOUTS
CAUTION:
These units have a crankcase heater factory installed. Wait 24 hours prior to performing a function checkout to allow forheatingofthecompressorcrankcase. Failure to comply may result in damage and could cause premature failure of the system.
Cooling
Gradually lower the thermostat temperature setpoint below the actual room temperature and observe that the outdoor unit and indoor blower energize. Feel the air being circulated by the indoor blower and verify that it is cooler than ambient temperature.Listen for any unusual noises. If unusual sounds occur, determine the source of the noise and correct as necessary.
Heating
If heating equipment (furnace, air handler) is provided with the system, lower the thermostat setpoint temperature to the lowest temperature setting and change the thermostat’s function mode to HEAT. The outdoor unit should stop running and the indoor blower will shut off after the preprogrammed delay.Increase the thermostat’s setpoint temperature to the maximum setting. Verify the heating equipment and the indoor blower energize after a short period of time. Feel the air being circulated by the indoor blower and verify that it is warmer than ambient temperature. Listen for any unusual noises. If unusual sounds occur, determine the source of the noise and correct as necessary.
NOTE: Other sources for heating (electric furnace, fossil fuel furnace, air handler with electric heat options, etc.) that interface with the heat pump should be functionally checked to
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