ESCO Heat Pump Questions with Correct Verified
Answers
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 an - ANS Reversing valve
What is the difference between "demand defrost" and "timed defrost"? - ANS Demand
defrost happens only when needed and timed defrost is based on time/temperature.
The thermostat that controls the auxiliary electric heat according to the outdoor
temperature is called the; - ANS Outdoor ambient thermostat
The outdoor temperature at which the heat pump provides the same amount of heat as
the heat loss of the conditioned space without an auxiliary heat is known as the; - ANS
Initial balance point
At what temperature is an outdoor ambient thermostat normally set? - ANS Slightly
above the initial balance point.
The outdoor coil is frozen solid on a "no heat" service call. The most likely reason is; -
ANS The outdoor fan is inoperative.
In order to determine a heat pumps' balance point, you must first calculate; - ANS The
building's heat load.
When a heat pump is used for heating and cooling, the system is sized by the; - ANS
Cooling load.
, A high efficiency heat pump system designed to function from high to low ambient
conditions below 10*F, may have? - ANS Two outdoor coils with each one incorporating
a dual stage compressor.
Room thermostats for heat pumps should be installed; - ANS As near to the main return
air grill as possible.
When the heat pump compressor has malfunctioned, the customer has the option to
switch the system into; - ANS Emergency heat mode.
Start up with a night set back digital thermostat requires the technician to always; - ANS
Teach the customer how to program the thermostat.
The heat pump defrost board can be manipulated by the technician to; - ANS Simulate
the defrost cycle.
The air-to-air heat pump outdoor unit is most efficient if located; - ANS In a moderate
climate zone.
Which of the following are innovations that may be found on new high efficiency units?
- ANS ECM fan motors.
How may a lockout (impedance) relay be reset? - ANS Simply disconnect power to the
unit momentarily.
The temperature difference between the 1st and 2nd bulbs for heating on a heat pump
thermostat is; - ANS Approximately 2*F
Answers
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 an - ANS Reversing valve
What is the difference between "demand defrost" and "timed defrost"? - ANS Demand
defrost happens only when needed and timed defrost is based on time/temperature.
The thermostat that controls the auxiliary electric heat according to the outdoor
temperature is called the; - ANS Outdoor ambient thermostat
The outdoor temperature at which the heat pump provides the same amount of heat as
the heat loss of the conditioned space without an auxiliary heat is known as the; - ANS
Initial balance point
At what temperature is an outdoor ambient thermostat normally set? - ANS Slightly
above the initial balance point.
The outdoor coil is frozen solid on a "no heat" service call. The most likely reason is; -
ANS The outdoor fan is inoperative.
In order to determine a heat pumps' balance point, you must first calculate; - ANS The
building's heat load.
When a heat pump is used for heating and cooling, the system is sized by the; - ANS
Cooling load.
, A high efficiency heat pump system designed to function from high to low ambient
conditions below 10*F, may have? - ANS Two outdoor coils with each one incorporating
a dual stage compressor.
Room thermostats for heat pumps should be installed; - ANS As near to the main return
air grill as possible.
When the heat pump compressor has malfunctioned, the customer has the option to
switch the system into; - ANS Emergency heat mode.
Start up with a night set back digital thermostat requires the technician to always; - ANS
Teach the customer how to program the thermostat.
The heat pump defrost board can be manipulated by the technician to; - ANS Simulate
the defrost cycle.
The air-to-air heat pump outdoor unit is most efficient if located; - ANS In a moderate
climate zone.
Which of the following are innovations that may be found on new high efficiency units?
- ANS ECM fan motors.
How may a lockout (impedance) relay be reset? - ANS Simply disconnect power to the
unit momentarily.
The temperature difference between the 1st and 2nd bulbs for heating on a heat pump
thermostat is; - ANS Approximately 2*F
