NATE Heat Pump Practice Test Exam
Questions And Correct Answers
Rated 100%
R-22 vapor line diameters and lengths are
typically specified for a... - ANSWER-Vapor
pressure drop that does not exceed a 6-7psi or
6 degrees F
,The primary purpose of using flux when
soldering copper or brass parts is... - ANSWER-
To prevent oxidation
The water that results from a defrost cycle of
an air to air heat pump(runoff) must... -
ANSWER-Drain off and away fro the outdoor
coil to prevent excessive ice build up on the
bottom of the coil and reduce capacity
The component used to reduce sound
transmission and prevent water leaks of a
packaged heat pump installed on a roof is... -
ANSWER-Curb Gasket
On some installations, a heat pump indoor coil
can be installed on an existing, operable, fossil
fuel furnace. When this type of installation is
done, you need to add a control so that... -
,ANSWER-The furnace and heat pump do not
operate at the same time in normal heating
When under a deep vacuum, a hermetic
refrigeration compressor's motor windings
could be... - ANSWER-Damaged if energized
In order for an evacuation to be considered
complete... - ANSWER-A heat pump
refrigeration circuit should be evacuated to a
vacuum pressure of 500 microns or below
A system is supplied from the factory with
charge for a 15 FOOT LINESET. The data plate
shows the required system charge to be 5
POUNDS 10 OUNCES. The lineset uses 3/8 inch
liquid line and is 25 FEET LONG. The
manufacturers instruction sheet specifies 0.6
ounces of refrigerant to be added for each
, added foot of refrigerant line length so... -
ANSWER-The total refrigerant charge for the
system would be 6 pounds
Drive slips are typically installed on the... -
ANSWER-Shorter sides of rectangular duct
To properly set a heat anticipator, it is
necessary to... - ANSWER-Check the heating
control circuit amperage draw.
A heat pump operating in normal ice free
conditions maintains a certain temperature
difference between the outdoor coil
temperature and the surrounding outdoor
ambient... - ANSWER-This temperature
difference is referred to as coil TD
Questions And Correct Answers
Rated 100%
R-22 vapor line diameters and lengths are
typically specified for a... - ANSWER-Vapor
pressure drop that does not exceed a 6-7psi or
6 degrees F
,The primary purpose of using flux when
soldering copper or brass parts is... - ANSWER-
To prevent oxidation
The water that results from a defrost cycle of
an air to air heat pump(runoff) must... -
ANSWER-Drain off and away fro the outdoor
coil to prevent excessive ice build up on the
bottom of the coil and reduce capacity
The component used to reduce sound
transmission and prevent water leaks of a
packaged heat pump installed on a roof is... -
ANSWER-Curb Gasket
On some installations, a heat pump indoor coil
can be installed on an existing, operable, fossil
fuel furnace. When this type of installation is
done, you need to add a control so that... -
,ANSWER-The furnace and heat pump do not
operate at the same time in normal heating
When under a deep vacuum, a hermetic
refrigeration compressor's motor windings
could be... - ANSWER-Damaged if energized
In order for an evacuation to be considered
complete... - ANSWER-A heat pump
refrigeration circuit should be evacuated to a
vacuum pressure of 500 microns or below
A system is supplied from the factory with
charge for a 15 FOOT LINESET. The data plate
shows the required system charge to be 5
POUNDS 10 OUNCES. The lineset uses 3/8 inch
liquid line and is 25 FEET LONG. The
manufacturers instruction sheet specifies 0.6
ounces of refrigerant to be added for each
, added foot of refrigerant line length so... -
ANSWER-The total refrigerant charge for the
system would be 6 pounds
Drive slips are typically installed on the... -
ANSWER-Shorter sides of rectangular duct
To properly set a heat anticipator, it is
necessary to... - ANSWER-Check the heating
control circuit amperage draw.
A heat pump operating in normal ice free
conditions maintains a certain temperature
difference between the outdoor coil
temperature and the surrounding outdoor
ambient... - ANSWER-This temperature
difference is referred to as coil TD
