HVAC NATE – Heat Pump Exam Verified A+ Questions and Answers (Latest Updated Version)

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HVAC NATE HEAT PUMP verified A+ questions and
answers.

Terms in this set (100)


With an R-410A condensing D. 8°F
pressure of 395 psig and a
liquid line temperature of
108°F what is the sub cooling
temperature?
When performing maintenance C. The fan runs freely without binding or vibrations
on a heat pump the technician
should check the
outdoor fan to be certain:
The continuity of a fuse in a A. With power off
disconnect
should be tested by checking
resistance:
Why does the outdoor fan on a C. Minimize defrost time
heat pump stopped during
defrost?
It technician measures the return B. 1323 SCFM
air
temperature of 100,000 BTU
output furnace to be 65°F and
the supply side air
temperature is 135°F. what is
the SCFM(standard CFM)?
The following measurements D. 29,177 btu/h
are recorded on an operating
heat pump system. The
heat pump is operating with the
compressor only with no
auxiliary heat.
-heat pump only supply air
temperature
92°F, heat pump only return air
temperature 70°F, outdoor
temperature 54°F, supply air

, temp./Auxiliary heat on 115°F,
return air
temp./Auxiliary heat on
70°F, CFM 1228 What is the
heating capacity of the unit in
BTU/H?