4
WIRING - LINE VOLTAGE
Check main power voltage. Refer to unit wiring diagram and make changes (if required) to permit
the unit to operate on the available supply voltage. Connect power as per the unit-wiring diagram,
conforming to the local and national electrical code requirements
.
CONNECTION AND LOCATION OF THERMOSTAT
Wiring the thermostat to the unit should be done as per the wiring diagram (inside the panel of the
electrical box on the vertical units and on the inside of the service panel for horizontal units).
Thermostat must be absolutely level when installed and located to best sense the actual room
temperature. Avoid false heat or cold sources from sunlight, open doors or window drafts, supply
air outlets, fireplaces, ovens, etc.
NOTE: Electronic thermostat must be use to operate this unit.
HIGH & LOW PRESSURE PROTECTION
Your unit is protected against excessive high pressure by a pressure limiting control. If the pressure
rises above 550 psi (3792 kPa), the pressure switch will shut down the unit.
Also if the pressure in the system falls below 55 psig (379 kPa), (due to refrigerant loss) the
pressure switch will shut down the unit.
To restart, pressures within the refrigerant circuit must return to the range of the pressure switch
that tripped before the unit starts functioning. If not, call a technician to solve the problem.
Repeated resetting on unit without getting the fault corrected will cause compressor failure.
