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ESCO Heat Pump Exam Questions And Answers A+ Grade.
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ESCO Heat Pump Exam Questions And Answers A+ Grade.
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ESCO HEAT PUMPESCO Heat Pump Exam Questions
And Answers A+ Grade.
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.
ESCO HEAT PUMP Page 1
, ESCO HEAT PUMP
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
ESCO HEAT PUMP Page 2
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