NATE HEAT PUMPS Part 1
Charging a heat pump with refrigerant is best accomplishes in the _____ mode. -
ANS-Cooling mode
Heat pumps can provide both heating in the winter and cooling in the summer. In which
mode is the heat pump more efficient? - ANS-Heating mode
Which of the following components is exclusive to the heat pump? - ANS-Reversing
valve
Which of the following airflow rates is the most reasonable for a heat pump system
operating in the heating cycle? - ANS-450 cfm per ton
During the heat pumps cooling cycle, the outdoor coil is utilized as a _____ while the
indoor coil is utilized as a _____. - ANS-Condenser, Evaporator
Heat is present in winter outdoor air until the outside air ambient temperature reaches a
low temperature of: - ANS--459 degrees F
The heat pump utilizes: - ANS-Some use of the bi-flow filter drier and others use two
filter driers with check valves
The correct way to size a heat pump is to perform both heating and cooling load
calculations and select the heat pump size by: - ANS-Using the cooling load to size the
system
Auxiliary electric heat is necessary because: - ANS--It provides heat for the home
during defrosts
-It provides heat for the home in the event of a heat pump failure
-It provides heat for the home if the heat pump is unable to meet the demand for heat
Reading a voltage across the contracts of the outdoor thermostat means: - ANS-The
thermostat contacts are open
What is not a type of heat pump? - ANS-Direct coupled
The coefficient of performance is determined by: - ANS-Dividing the input btuh by the
output btuh
Charging a heat pump with refrigerant is best accomplishes in the _____ mode. -
ANS-Cooling mode
Heat pumps can provide both heating in the winter and cooling in the summer. In which
mode is the heat pump more efficient? - ANS-Heating mode
Which of the following components is exclusive to the heat pump? - ANS-Reversing
valve
Which of the following airflow rates is the most reasonable for a heat pump system
operating in the heating cycle? - ANS-450 cfm per ton
During the heat pumps cooling cycle, the outdoor coil is utilized as a _____ while the
indoor coil is utilized as a _____. - ANS-Condenser, Evaporator
Heat is present in winter outdoor air until the outside air ambient temperature reaches a
low temperature of: - ANS--459 degrees F
The heat pump utilizes: - ANS-Some use of the bi-flow filter drier and others use two
filter driers with check valves
The correct way to size a heat pump is to perform both heating and cooling load
calculations and select the heat pump size by: - ANS-Using the cooling load to size the
system
Auxiliary electric heat is necessary because: - ANS--It provides heat for the home
during defrosts
-It provides heat for the home in the event of a heat pump failure
-It provides heat for the home if the heat pump is unable to meet the demand for heat
Reading a voltage across the contracts of the outdoor thermostat means: - ANS-The
thermostat contacts are open
What is not a type of heat pump? - ANS-Direct coupled
The coefficient of performance is determined by: - ANS-Dividing the input btuh by the
output btuh
