Heat is present in winter outdoor air until the outside air ambient temperature
reaches a low temperature of:
A: 0 degrees F
B: 32 degrees F
C: 273 degrees F
D: -459 degrees F - Answer: D: -459 degrees F
Technically this is true, but not practical. A heat pump is doing good to continue to
work below 10 deg F unless specifically designed for lower temperatures.
The heat pump utilizes:
A: Two filter-driers with check valves
B: One bi-flow filter-drier
C: A single mono-flow filter-drier in the liquid line
D: Some use the bi-flow filter-drier and others use two filter-driers with check
valves - Answer: D: Some use the bi-flow- filter-drier and others use two filter-
driers with check valves
The correct way to size a heat pump is to perform both heating and cooling load
calculations and select the heat pump size by:
A: Adding the heating load and cooling loads
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