Manual
Circulating Air Blower
1.Be sure electric power is OFF.
2.Set thermostat Heat-Cool selector to OFF.
3.Set thermostat fan switch to AUTO.
4.Turn electric power ON. Nothing should start running.
5.Set thermostat fan switch to ON. The circulating air blower should
come ON after a 30 second delay.
6. Reset thermostat fan switch to AUTO. The circulating air blower
should go OFF after a 30 second delay. Nothing should be running.
Cooling
1. Be sure that electric power is OFF.
4.Set the thermostat temperature setting as high as it will go.
5.Turn electric power ON.
6.Operate unit AT LEAST 5 minutes, then check temperature rise.
NOTE: The maximum outlet air temperature for all models is 200°F
(93.350). Maximum temperature rise for electric heat is 60°F (33.350)
If temperature rise is excessive, verify proper airflow through the unit. If
temperature rise is inadequate, check for proper electrical supply to the
heater and verify correct airflow.
7.Set thermostat to normal temperature setting.
8.Turn electric power OFF.
9.Change blower speed tap if 60°F (33.3°0) TemperatureRise was exceeded
and repeat.
10.Be sure to seal all holes in ducts if any were created during this
process.
Defrost Control Time Interval Adjustment
2. Set thermostat Heat-Cool select to COOL.
3. Adjust thermostat setting to below room temperature.
4. Turn electric power ON. During power application check the follow-
ing:
a. Contactor - Contacts closing
b. Compressor - ON
c. Condenser fan motor - ON
d. Circulating air blower - ON (after delay)
5. Switch the thermostat to OFF, check the following:
a. Contactor contacts opening.
b. Compressor - OFF
c. Condenser fan motor - OFF
d. Circulating blower - OFF (after delay)
6.Turn electric power OFF
Auxiliary Heating
NOTE: Repeat circulating air blower procedure above if Auxiliary Electric
Heat is being installed after unit has been installed and checked out.
Temperature Rise Check
Temperature rise is the difference between the supply and return air tem-
peratures. The temperature rise should be -+2°F (1.1°C) of the tempera-
ture rise shown in FIGURE 11 .
NOTE: The temperature rise can be adjusted by changing the heating
speed tap at the unit's blower terminal block. Refer to the unit's Installation
Instructions for airflow information.
Atemperature rise greater than 60°F (33.3°C) is not recommended. (This
applies to electric heat only).
1.To check the temperature rise through the unit, place thermometers
in the supply and return air ducts as close to the unit as possible.
2. Open ALL registers and duct dampers.
3.Set thermostat Heat-Cool selector to HEAT.
Electrical shock hazard.
Turn OFF electric power supply at disconnect switch or ser-
vice panel before removing any access or service panel from
unit.
Failure to follow this warning can result in property damage,
personal injury, and/or death.
To adjust defrost interval:
1.Turn off all power to Heat Pump.
2. Remove control box cover.
3. Locate electronic defrost control board.
4.The Defrost Control Board has ajumper plug that can be set at 30, 60,
90 or TEST. Remove the plug and insert on the appropriate 2 pins
indicated by ) on the board.
13. Sequence of Operation
NOTE: If power to the unit has been interrupted, there will be a 3 minute
delay before the compressor starts.
Cooling Mode: Energized (R,G,Y, O) De-energized (N/A)
(a) When high and low voltage have been applied to unit
for more than 3 minutes:
(1)On a call for cooling ......... :
The compressor and condenser fan will energize. The evaporator
blower motor will have a delay on and will energize after 30 seconds.
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