Heat pump exam || All Questions Answered Correctly.
1. An air-to-air heat pump has many of the same components as an air conditioning system. The
major difference is that a heat pump also has a (an); correct answers C: reversing valve.
2. What is the difference between "demand defrost" and "timed defrost?" correct answers D:
Demand defrost happens only when needed and timed defrost is based on time whether it is
needed or not.
3. The thermostat that controls the auxiliary electric heat according to the outdoor temperature is
called the; correct answers C: outdoor ambient thermostat.
4. The outdoor temperature at which the heat pump provides the same amount of heat as the heat
loss of the conditioned space without auxiliary heat is known as the; correct answers A: initial
balance point.
5. At what temperature is an outdoor ambient thermostat normally set? correct answers B: At or
slightly above the initial balance point.
6. The outdoor coil is frozen solid on a "no heat" service call. The most likely reason is: correct
answers D: none of the above.
7. In order to determine a heat pumps' balance point, you must first calculate; correct answers A:
the building's heat load.
8. Heat pumps are sized to handle the; correct answers A: cooling load.
9. On a heat pump, which coil is considered the evaporar? correct answers D: Depends on the
mode of operation.
10. Room thermostats for heat pumps should be installed; correct answers B: as near to the main
return air grill as possible.
11. When the heat pump compressor has malfunetioned, the cus tomer has the option to switch
the system into; correct answers B: emergency heat mode.
12. Start-up with a night set back digital thermostat requires the technician to always; correct
answers B: teach the customer to program the thermostat.
13. The heat pump defrost board can be manipulated by the technician to; correct answers C:
simulate the defrost cycle.
The air-to-air heat pump outdoor unit is most efficient if located; correct answers C: in a
moderate climate zone.
, 15. Which of the following are are innovations that may be found on new high efficiency units?
correct answers A: Variable speed compressor and fan motors.
16. How may a lockout (impedance) relay be reset? correct answers C: Simply disconnect power
to the unit momentarily.
17. The temperature difference between the 1t and 2od bulbs for heating on a heat pump
thermostat is; correct answers C: approximately 2°F
18. What does the SEER rating determine? correct answers A: Heat produced divided by watts
consumed during a particular season.
19. What might happen if the indoor fan is operated at an excessive speed in the coolin mode?
correct answers A: It may not properly remove the humidity from the conditioned space.
20. The most preferred method of charging any system in the field is; correct answers C: by
weight.
21. What is the industry standard for deep vacuum? correct answers C: Maintain 500 microns for
15 minutes.
22. Good service practice for installation of a reversing valve includes; correct answers B: do not
overheat the new valve body C: use heat paste and wet rags while brazing in the new valve.
23. Describe the "trickle circuit" method of crankease heating. correct answers A: One leg of
supply voltage is directed through the start winding.
From this information you can conclude that; correct answers B : airflow in CFM is below
normal
25. What control operates the 1't stage of secondary heat? correct answers C: The second heating
stage of the indoor thermostat.
26. What is the industry standard for maximum duration for defrost? correct answers C: A
maximum of 10 minutes.
27. What is the recommended CFM across the evaporator coil of a heat pump? correct answers
B: 400 to 450 CFM.
28. If manufacturers specifications are not available, a good way to determine cubic feet per
minute through a coil is to: correct answers A: Utilize the temperature rise on emergency heat
method.
29. What type of defrost is employed on this heat pump? correct answers B: Time and
temperature initiation, time or temperature termination.
1. An air-to-air heat pump has many of the same components as an air conditioning system. The
major difference is that a heat pump also has a (an); correct answers C: reversing valve.
2. What is the difference between "demand defrost" and "timed defrost?" correct answers D:
Demand defrost happens only when needed and timed defrost is based on time whether it is
needed or not.
3. The thermostat that controls the auxiliary electric heat according to the outdoor temperature is
called the; correct answers C: outdoor ambient thermostat.
4. The outdoor temperature at which the heat pump provides the same amount of heat as the heat
loss of the conditioned space without auxiliary heat is known as the; correct answers A: initial
balance point.
5. At what temperature is an outdoor ambient thermostat normally set? correct answers B: At or
slightly above the initial balance point.
6. The outdoor coil is frozen solid on a "no heat" service call. The most likely reason is: correct
answers D: none of the above.
7. In order to determine a heat pumps' balance point, you must first calculate; correct answers A:
the building's heat load.
8. Heat pumps are sized to handle the; correct answers A: cooling load.
9. On a heat pump, which coil is considered the evaporar? correct answers D: Depends on the
mode of operation.
10. Room thermostats for heat pumps should be installed; correct answers B: as near to the main
return air grill as possible.
11. When the heat pump compressor has malfunetioned, the cus tomer has the option to switch
the system into; correct answers B: emergency heat mode.
12. Start-up with a night set back digital thermostat requires the technician to always; correct
answers B: teach the customer to program the thermostat.
13. The heat pump defrost board can be manipulated by the technician to; correct answers C:
simulate the defrost cycle.
The air-to-air heat pump outdoor unit is most efficient if located; correct answers C: in a
moderate climate zone.
, 15. Which of the following are are innovations that may be found on new high efficiency units?
correct answers A: Variable speed compressor and fan motors.
16. How may a lockout (impedance) relay be reset? correct answers C: Simply disconnect power
to the unit momentarily.
17. The temperature difference between the 1t and 2od bulbs for heating on a heat pump
thermostat is; correct answers C: approximately 2°F
18. What does the SEER rating determine? correct answers A: Heat produced divided by watts
consumed during a particular season.
19. What might happen if the indoor fan is operated at an excessive speed in the coolin mode?
correct answers A: It may not properly remove the humidity from the conditioned space.
20. The most preferred method of charging any system in the field is; correct answers C: by
weight.
21. What is the industry standard for deep vacuum? correct answers C: Maintain 500 microns for
15 minutes.
22. Good service practice for installation of a reversing valve includes; correct answers B: do not
overheat the new valve body C: use heat paste and wet rags while brazing in the new valve.
23. Describe the "trickle circuit" method of crankease heating. correct answers A: One leg of
supply voltage is directed through the start winding.
From this information you can conclude that; correct answers B : airflow in CFM is below
normal
25. What control operates the 1't stage of secondary heat? correct answers C: The second heating
stage of the indoor thermostat.
26. What is the industry standard for maximum duration for defrost? correct answers C: A
maximum of 10 minutes.
27. What is the recommended CFM across the evaporator coil of a heat pump? correct answers
B: 400 to 450 CFM.
28. If manufacturers specifications are not available, a good way to determine cubic feet per
minute through a coil is to: correct answers A: Utilize the temperature rise on emergency heat
method.
29. What type of defrost is employed on this heat pump? correct answers B: Time and
temperature initiation, time or temperature termination.
