25
6.
7. Turn the temperature setting to the highest position,
installed, use Test/Balance Menu to force the unit to
8.
return to normal operation.
1.
transformer to terminal XS. The control voltage is
to terminals ES and R.
2.
3. UNIT WITH ECONOMIZER OPTION: The compressor
circuit is interlocked through the economizer module.
If the outdoor air enthalpy (temperature and humidity)
4.
air to the space.
5. Compressor contactor closes its contacts to provide
condenser fan motor is energized through the
compressor contactor.
WARNING
BURN HAZARD!
DO NOT TOUCH! DISCHARGE LINE MAY BE HOT!
6. Check that the compressor is operating correctly. The
scroll compressors in these units MUST operate in the
proper rotation. To ensure the compressor is operating
in the correct direction, check the compressor
discharge line pressure or temperature after the
compressor is started.
The discharge pressure and discharge line temperature
should increase. If this does not occur and the compressor
is producing an exceptional amount of noise, perform the
1.
check for compressor and condenser fan motor
operation.
2.
continue cooling operation until the room temperature
Test/Balance Menu to force the unit to Vent Mode.
3. Increasing the room cooling setpoint to a value
installed, use Test/Balance Menu to force the unit to
operation.
4. After a time delay of approximately 3 minutes, the
temperatures. Values in Appendix B can slightly exceed
temperatures.
1. Check to see if all supply and return air grilles are
2.
3.
or sheet metal surfaces or edges. If so, correct the
4. Set the thermostat at the appropriate setting for
cooling and heating or automatic changeover for
normal use.
5.
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