How does the reversing valve switch a heat pump between heating and cooling modes?
a. It reverses refrigerant flow through the compressor.
b. It causes both check valves to allow refrigerant flow to the indoor coil.
c. It causes both metering devices to meter refrigerant.
d. It reverses refrigerant flow through the indoor and outdoor coils.
d
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Explain heat transfer by conduction.
What will be an ideal response?
When the liquid line is restricted, the supply of refrigerant to the metering device is reduced. What is the effect on suction pressure and superheat?
A) Suction is increased and superheat increased. B) Suction pressure goes down and superheat increases. C) No change in the suction pressure D) Suction is decreased and superheat decreased.
Define a pilot relay.
What will be an ideal response?