When a zone thermostat fan-control switch is moved from Auto to On, what should happen?
a. All system dampers open and the blower starts.
b. The zone damper for each zone set to On opens and the blower starts.
c. The zone damper for that zone closes, all the others open, and the blower starts.
d. The zone damper remains open at all times, regardless of the system operating
conditions.
b. The zone damper for each zone set to On opens and the blower starts.
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The contactor controls:
A) The indoor fan. B) The compressor and the condenser fan. C) The compressor. D) The condenser fan.
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