Heat Pump ESCO Exam With Complete Solution 2024-2025
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 - Answer Reversing valve
What is the difference between "demand defrost" and "timed defrost"? - Answer
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; - Answer 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; -
Answer Initial balance point
At what temperature is an outdoor ambient thermostat usually set? - Answer Slightly
above the initial balance point.
The outdoor coil is frozen solid on a "no heat" service call. The most likely reason is; -
Answer The outdoor fan is inoperative.
To calculate a heat pumps' balance point, you must first need to determine; - Answer
The building's heat load.
When a heat pump is being used for both heating and cooling, the system is sized based
up on the; - Answer Cooling load.
A high efficiency heat pump system that has been designed to operate from high to low
ambient conditions below 10*F, may have? - Answer Two outdoor coils with each one
incorporating a dual stage compressor.
, Room thermostats for heat pumps are to be installed; - Answer As close to the main
return air grill as possible.
If the heat pump compressor has failed, the customer can choose to put the system into;
- Answer Emergency heat mode.
Start up with a night set back digital thermostat requires the technician to always have
to; - Answer Teach the customer how to program the thermostat.
The technician can manipulate the defrost board of the heat pump to; - Answer Simulate
the defrost cycle.
The air-to-air heat pump outdoor unit is most efficient if located; - Answer In a moderate
climate zone.
Which of the following are innovations that may be found on new high efficiency units? -
Answer ECM fan motors.
How does a lockout (impedance) relay reset? -Answer Just momentarily disconnect
power to the unit.
The Delta T between the 1st and 2nd bulbs for heat on a heat pump thermostat is;
-Answer About 2*F
SEER is calculated by; -Answer Dividing the Btu's removed by the watts consumed
during the cooling season.
If the indoor fan is operated at an excessive speed in the cooling mode; - Answer The
system will not be able to remove the humidity from the conditioned space properly.
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 - Answer Reversing valve
What is the difference between "demand defrost" and "timed defrost"? - Answer
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; - Answer 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; -
Answer Initial balance point
At what temperature is an outdoor ambient thermostat usually set? - Answer Slightly
above the initial balance point.
The outdoor coil is frozen solid on a "no heat" service call. The most likely reason is; -
Answer The outdoor fan is inoperative.
To calculate a heat pumps' balance point, you must first need to determine; - Answer
The building's heat load.
When a heat pump is being used for both heating and cooling, the system is sized based
up on the; - Answer Cooling load.
A high efficiency heat pump system that has been designed to operate from high to low
ambient conditions below 10*F, may have? - Answer Two outdoor coils with each one
incorporating a dual stage compressor.
, Room thermostats for heat pumps are to be installed; - Answer As close to the main
return air grill as possible.
If the heat pump compressor has failed, the customer can choose to put the system into;
- Answer Emergency heat mode.
Start up with a night set back digital thermostat requires the technician to always have
to; - Answer Teach the customer how to program the thermostat.
The technician can manipulate the defrost board of the heat pump to; - Answer Simulate
the defrost cycle.
The air-to-air heat pump outdoor unit is most efficient if located; - Answer In a moderate
climate zone.
Which of the following are innovations that may be found on new high efficiency units? -
Answer ECM fan motors.
How does a lockout (impedance) relay reset? -Answer Just momentarily disconnect
power to the unit.
The Delta T between the 1st and 2nd bulbs for heat on a heat pump thermostat is;
-Answer About 2*F
SEER is calculated by; -Answer Dividing the Btu's removed by the watts consumed
during the cooling season.
If the indoor fan is operated at an excessive speed in the cooling mode; - Answer The
system will not be able to remove the humidity from the conditioned space properly.
