Question 1

The component used to switch the heat pump unit between the heating and cooling modes of operation is the ____.

Accepted Answer

A)   four-way valve
B)   bi-valve
C)   two-way valve
D)   switching valveE) A) and D)
F) None of the above

Question 2

When oil or gas auxiliary heat is used with a heat pump, the heat pump indoor coil must be located  ____________________ of the oil or gas heat exchanger.

Accepted Answer

The answer of When oil or gas auxiliary heat is...

Question 3

The coil of the air-to-air heat pump system that is the indoor unit is known as the ____________________ in the heating mode.

Accepted Answer

The answer of The coil of the air-to-air heat pump...

Question 4

Some heat pump systems when not capable of meeting the heating needs of the structure are equipped with second-stage heat, called ____________________.

Accepted Answer

The answer of Some heat pump systems when not capable...

Question 5

The larger line in an air-to-air split-system heat pump is known as the ____ line.

Accepted Answer

A)   vapor
B)   liquid
C)   transient
D)   gasE) C) and D)
F) A) and C)

Question 6

When a heat pump is added to an electric furnace, the indoor coil must be located after the ____________________ strips.

Accepted Answer

The answer of When a heat pump is added to...

Question 7

Most heat pump systems are designed to operate in the heating mode when the solenoid is not energized. This is referred to as "____________________ in the heating mode".

Accepted Answer

The answer of Most heat pump systems are designed to...

Question 8

An air-to-air heat pump ____ heat from the outside air and deposits it in the conditioned space.

Accepted Answer

A)   adds
B)   removes
C)   creates
D)   restrictsE) A) and B)
F) C) and D) B

Question 9

The coil of the air-to-air heat pump system that is the indoor unit is known as the ____________________ in the cooling mode.

Accepted Answer

The answer of The coil of the air-to-air heat pump...

Question 10

When a compressor is changed, the four-way valve also must be changed.

Accepted Answer

A) True 
 B)False  False

Question 11

In heat pump systems the sensing bulb is typically exposed to high temperatures and could rupture the valve diaphragm. For this reason, a(n) ____________________ TVX is usually used.

Accepted Answer

vapor-char...

Question 12

A(n) ____________________ thermostatic expansion valve has a check valve built into the body of the TXV.

Accepted Answer

bi-directi...

Question 13

In the emergency heat mode, the auxiliary heat source becomes the primary heat source because of heat pump failure.

Accepted Answer

A) True 
 B)False

Question 14

The term ____________________ indicates the source of heat while the system is operating in the heating mode and the medium that is ultimately being treated.

Accepted Answer

air-to-air...

Question 15

The smaller line in an air-to-air split-system heat pump is known as the ____ line.

Accepted Answer

A)   gas
B)   vapor
C)   solid
D)   liquidE) A) and B)
F) C) and D) D

Question 16

What prevents cold air from being circulated to the heated space during the defrost cycle?

Accepted Answer

A)   The auxiliary heater turns on to "temper" the air.
B)   All of the dampers close automatically.
C)   The indoor fan motor turns off.
D)   Both a and b are correct.E) C) and D)
F) A) and C)

Question 17

It is common for the outdoor unit to ice-up when the heat pump is operated in the cooling mode.

Accepted Answer

A) True 
 B)False

Question 18

The ____________________ is a four-port valve that has a slide mechanism in it.

Accepted Answer

four-way r...

Question 19

The lowest outside air temperature at which the heat pump system can satisfy the heating needs of the structure without requiring auxiliary heat is called the ____________________.

Accepted Answer

The answer of The lowest outside air temperature at which...

Question 20

What is it meant by the terminology "time or temperature terminated" defrost cycle?

Accepted Answer

It means that either...

Exam 43: Air Source Heat Pumps

The component used to switch the heat pump unit between the heating and cooling modes of operation is the ____.

Correct AnswerverifiedShow Answer

When oil or gas auxiliary heat is used with a heat pump, the heat pump indoor coil must be located ____________________ of the oil or gas heat exchanger.

Correct AnswerverifiedShow Answer

The coil of the air-to-air heat pump system that is the indoor unit is known as the ____________________ in the heating mode.

Correct AnswerverifiedShow Answer

Some heat pump systems when not capable of meeting the heating needs of the structure are equipped with second-stage heat, called ____________________.

Correct AnswerverifiedShow Answer

The larger line in an air-to-air split-system heat pump is known as the ____ line.

Correct AnswerverifiedShow Answer

When a heat pump is added to an electric furnace, the indoor coil must be located after the ____________________ strips.

Correct AnswerverifiedShow Answer

Most heat pump systems are designed to operate in the heating mode when the solenoid is not energized. This is referred to as "____________________ in the heating mode".

Correct AnswerverifiedShow Answer

An air-to-air heat pump ____ heat from the outside air and deposits it in the conditioned space.

Correct AnswerverifiedB

The coil of the air-to-air heat pump system that is the indoor unit is known as the ____________________ in the cooling mode.

Correct AnswerverifiedShow Answer

When a compressor is changed, the four-way valve also must be changed.

Correct AnswerverifiedFalse

In heat pump systems the sensing bulb is typically exposed to high temperatures and could rupture the valve diaphragm. For this reason, a(n) ____________________ TVX is usually used.

Correct Answerverifiedvapor-char...View AnswerShow Answer

A(n) ____________________ thermostatic expansion valve has a check valve built into the body of the TXV.

Correct Answerverifiedbi-directi...View AnswerShow Answer

In the emergency heat mode, the auxiliary heat source becomes the primary heat source because of heat pump failure.

Correct AnswerverifiedShow Answer

The term ____________________ indicates the source of heat while the system is operating in the heating mode and the medium that is ultimately being treated.

Correct Answerverifiedair-to-air...View AnswerShow Answer

The smaller line in an air-to-air split-system heat pump is known as the ____ line.

Correct AnswerverifiedD

What prevents cold air from being circulated to the heated space during the defrost cycle?

Correct AnswerverifiedShow Answer

It is common for the outdoor unit to ice-up when the heat pump is operated in the cooling mode.

Correct AnswerverifiedShow Answer

The ____________________ is a four-port valve that has a slide mechanism in it.

Correct Answerverifiedfour-way r...View AnswerShow Answer

The lowest outside air temperature at which the heat pump system can satisfy the heating needs of the structure without requiring auxiliary heat is called the ____________________.

Correct AnswerverifiedShow Answer

What is it meant by the terminology "time or temperature terminated" defrost cycle?

Correct AnswerverifiedIt means that either...View AnswerShow Answer

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B

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False

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vapor-char...
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bi-directi...
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air-to-air...
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D

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four-way r...
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It means that either...
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