Esco Heat pump exam Questions AND Correct Answers
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); - ✔✔C: reversing valve.
2. What is the difference between "demand defrost" and
"timed defrost?" - ✔✔D: demand defrost only happens when
needed, and time defrost is on timed temperature
3. The thermostat that controls the auxiliary electric heat
according to the outdoor temperature is called the; - ✔✔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; - ✔✔A: initial
balance point.
5. At what temperature is an outdoor ambient thermostat
normally set? - ✔✔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: - ✔✔D: outdoor fan is inoperative
7. In order to determine a heat pumps' balance point, you
must first calculate; - ✔✔A: the building's heat load.
8. Heat pumps are sized to handle the; - ✔✔A: cooling load.
9. a high efficiency heat pump system designed to function
from high or low ambient conditions below 10F may have; -
✔✔C: auxiliary heat exchanger injected with a ethylene glycol
solution.
10. Room thermostats for heat pumps should be installed; -
✔✔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; - ✔✔B:
emergency heat mode.
, 12. Start-up with a night set back digital thermostat requires
the technician to always; - ✔✔D: teach the customer to
program the thermostat.
13. The heat pump defrost board can be manipulated by the
technician to; - ✔✔C: simulate the defrost cycle.
14. The air-to-air heat pump outdoor unit is most efficient if
located; - ✔✔C: in a moderate climate zone.
15. Which of the following are innovations that may be found
on new high efficiency units? - ✔✔D. ECM motors
16. How may a lockout (impedance) relay be reset? - ✔✔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; - ✔✔C:
approximately 2°F
18. SEER calculated by: - ✔✔B. BTUs removed by the watts
consumed during the cooling season
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); - ✔✔C: reversing valve.
2. What is the difference between "demand defrost" and
"timed defrost?" - ✔✔D: demand defrost only happens when
needed, and time defrost is on timed temperature
3. The thermostat that controls the auxiliary electric heat
according to the outdoor temperature is called the; - ✔✔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; - ✔✔A: initial
balance point.
5. At what temperature is an outdoor ambient thermostat
normally set? - ✔✔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: - ✔✔D: outdoor fan is inoperative
7. In order to determine a heat pumps' balance point, you
must first calculate; - ✔✔A: the building's heat load.
8. Heat pumps are sized to handle the; - ✔✔A: cooling load.
9. a high efficiency heat pump system designed to function
from high or low ambient conditions below 10F may have; -
✔✔C: auxiliary heat exchanger injected with a ethylene glycol
solution.
10. Room thermostats for heat pumps should be installed; -
✔✔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; - ✔✔B:
emergency heat mode.
, 12. Start-up with a night set back digital thermostat requires
the technician to always; - ✔✔D: teach the customer to
program the thermostat.
13. The heat pump defrost board can be manipulated by the
technician to; - ✔✔C: simulate the defrost cycle.
14. The air-to-air heat pump outdoor unit is most efficient if
located; - ✔✔C: in a moderate climate zone.
15. Which of the following are innovations that may be found
on new high efficiency units? - ✔✔D. ECM motors
16. How may a lockout (impedance) relay be reset? - ✔✔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; - ✔✔C:
approximately 2°F
18. SEER calculated by: - ✔✔B. BTUs removed by the watts
consumed during the cooling season
