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Part No. 30790F089
Supersedes 30790G082
Date, 6-1o89
Page 11 of 12
OPERATION INSTRUCTIONS
The following instructions are to be followed to obtain years of trouble free operation of your year-around
comfort system.
To start unit turn on main power (may have two disconnect switches). If the outdoor temperature is below
indoor temperature, the main power should be turned on 24 hours before starting unit in order to assure
no liquid refrigerant is in the compressor crankcase, and to prevent valve damage of compressor.
Operation of this unit is automatic and will provide heating or cooling depending on the setting of the
thermostat.
Heating Operation
1. Set thermostat system switch to "HEAT".
2. Set thermostat lever to desired temperature.
3. Set fan switch to "ON" for continuous indoor blower operation or to "AUTO" for indoor
blower to cycle corresponding with thermostat cycling.
Cooling Operation
1. Set thermostat system switch to "(_OOU'.
2. Set thermostat lever to desired temperature.
3. Set fan switch to "ON" for continuous indoor blower operation or to "AUTO" for indoor
blower to cycle corresponding with thermostat cycling.
System Shutdown
1. For temporary or short periods of shut-down, set thermostat system to 'OFF" and fan
switch to "AUTO".
2. For a prolonged period of shut-down, set thermostat system switch to "OFF" and fan
switch to "AUTO". Turn off electric power supply. (Two disconnect switches may supply
unit.)