UNIT 65 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX
65-1) What type of heat pump is the most common and why?
65-2) What is the relationship between air-to-air heat pump heating capacity and outside
air temperature?
65-3) What is a dual fuel heat pump?
65-4) What is the HSPF of the most efficient air to air heat pumps?
65-5) What are the efficiency requirements for the Energy Star label to be awarded for an
air-to-air heat pump?
65-6) What are some advantages of the mini-split heat pump?
65-7) How should heat pump outdoor units be mounted in areas where snowfall
accumulates?
65-8) What does the Y terminal on most heat pump thermostats control and when is it
energized?
65-9) Why do air source heat pump thermostats have two stages of heat?
65-10) What is usually used for auxiliary heat?
65-11) What is the difference between auxiliary heat and emergency heat?
65-12) What is the purpose of the crankcase heater?
65-13) What two types of solar assisted heat pump systems are available?
65-14) What are the two main types of defrost controls used on heat pumps today?
65-15) Describe what happens during the defrost cycle?
65-16) When describing a defrost control, what do the terms initiation and termination
mean?
65-17) Why must a heat pump indoor coil be able to withstand higher pressures than a
regular air conditioning evaporator coil?
65-18) Where is the indoor coil in relation to the blower on a heat pump blower coil?
65-19) What is the system balance point?
65-20) What is the purpose of the outdoor air thermostat?
65-21) What determines which metering device is active?
65-22) Where in the airstream are electric strip heaters installed?
65-23) Describe the operation of a heat pump with electric strip heat operating below the
balance point.
An air to air heat pump will operate continuously when the outdoor temperature
65-24) Describe the operation of a dual fuel heat pump operating below the balance
point.
65-25) What is the difference between demand defrost control and time temperature
defrost control?
65-26) What are some of the advantages of an air to water heat pump system?
65-27) How does a heat pump hot water heater work?
65-28) What is the difference between a mini-split system and a traditional split system?
65-29) What controls the operation of the furnace and heat pump in a dual fuel system?