Question 1

When servicing an R-410A window air conditioner, adjust the airflow across the condenser until the head pressure reaches ____.

Accepted Answer

A)   360 psig
B)   400 psig
C)   420 psig
D)   460 psigE) B) and D)
F) C) and D)

Question 2

Central air conditioning systems operate with a design evaporator saturation temperature of about ____________________ºF.

Accepted Answer

The answer of Central air conditioning systems operate with a...

Question 3

All 230-V power supplies use the same style plug.

Accepted Answer

A) True 
 B)False

Question 4

Heat exchange between the capillary tube and the suction line is typically found on window air conditioners.

Accepted Answer

A) True 
 B)False

Question 5

Why may the window unit installation be considered temporary and the through-the-wall unit considered permanent?

Accepted Answer

The window air conditioner may be removed and the window restored to its original use. The wall installation is permanent because a hole is cut in the wall and must be patched if the unit is removed.

Question 6

In a heat-pump room air conditioner in the cooling cycle, the indoor coil acts as the ____________________.

Accepted Answer

The answer of In a heat-pump room air conditioner in...

Question 7

Cooling-only room air conditioners are marketed in ____ Btu/h capacities.

Accepted Answer

A)   1,000 to 15,000
B)   3,000 to 20,000
C)   4,000 to 24,000
D)   5,000 to 30,000E) A) and C)
F) A) and D)

Question 8

To ensure correct direction of refrigerant flow in heat-pump-style room air conditioners, ____ are included in the unit.

Accepted Answer

A)   filter drivers
B)   globe valves
C)   quarter-turn valves
D)   check valvesE) A) and B)
F) All of the above

Question 9

How many air moving motors do cooling-only room air conditioners usually have?

Accepted Answer

The answer of How many air moving motors do cooling-only...

Question 10

What are the two advantages of draining the condensed moisture to the slinger system on the condenser?

Accepted Answer

1 Keeps the unit fro...

Question 11

Electrical service for a room unit may also involve the thermostat and the power cord.

Accepted Answer

A) True 
 B)False

Question 12

The condensate off the evaporator coil in a room air conditioner is generally disposed of by ____.

Accepted Answer

A)   draining to the outside soil
B)   piping to a storm drain
C)   draining to the slinger system of the fan
D)   draining to a holding tankE) B) and D)
F) None of the above

Question 13

Cooling-only window air conditioners range in size from about 4,000 Btu/h to 24,000 Btu/h.

Accepted Answer

A) True 
 B)False  True

Question 14

A heat-pump-style room air conditioner has all the major components of a cooling-only unit with the addition of a ____.

Accepted Answer

A)   3-way valve
B)   4-way valve
C)   quarter-turn valve
D)   line-tap valveE) A) and C)
F) A) and B)

Question 15

The evaporator typically operates _____ the dew point temperature of the room air.

Accepted Answer

A)   much lower than
B)   much higher than
C)   below
D)   aboveE) C) and D)
F) B) and D)

Question 16

If a window air conditioner is installed with an inward pitch, the condensate could leak into the room.

Accepted Answer

A) True 
 B)False

Question 17

Some cooling-only window air conditioners are equipped with energy-saver switches. What is their purpose?

Accepted Answer

The purpose of this switch is ...

Question 18

Why do room air conditioners ice up easier than central air-conditioning systems?

Accepted Answer

Room air conditioner...

Question 19

The metering device in a modern room air conditioner is a(n) ____________________.

Accepted Answer

capillary tube

Question 20

In a heat-pump-style room air conditioner in the heating cycle, the indoor coil acts as the ____________________.

Accepted Answer

The answer of In a heat-pump-style room air conditioner in...

Exam 46: Room Air Conditioners

When servicing an R-410A window air conditioner, adjust the airflow across the condenser until the head pressure reaches ____.

Correct AnswerverifiedShow Answer

Central air conditioning systems operate with a design evaporator saturation temperature of about ____________________ºF.

Correct AnswerverifiedShow Answer

All 230-V power supplies use the same style plug.

Correct AnswerverifiedShow Answer

Heat exchange between the capillary tube and the suction line is typically found on window air conditioners.

Correct AnswerverifiedShow Answer

Why may the window unit installation be considered temporary and the through-the-wall unit considered permanent?

Correct AnswerverifiedThe window air conditioner may be removed and the window restored to its original use. The wall installation is permanent because a hole is cut in the wall and must be patched if the unit is removed.

In a heat-pump room air conditioner in the cooling cycle, the indoor coil acts as the ____________________.

Correct AnswerverifiedShow Answer

Cooling-only room air conditioners are marketed in ____ Btu/h capacities.

Correct AnswerverifiedShow Answer

To ensure correct direction of refrigerant flow in heat-pump-style room air conditioners, ____ are included in the unit.

Correct AnswerverifiedShow Answer

How many air moving motors do cooling-only room air conditioners usually have?

Correct AnswerverifiedShow Answer

What are the two advantages of draining the condensed moisture to the slinger system on the condenser?

Correct Answerverified1 Keeps the unit fro...View AnswerShow Answer

Electrical service for a room unit may also involve the thermostat and the power cord.

Correct AnswerverifiedShow Answer

The condensate off the evaporator coil in a room air conditioner is generally disposed of by ____.

Correct AnswerverifiedShow Answer

Cooling-only window air conditioners range in size from about 4,000 Btu/h to 24,000 Btu/h.

Correct AnswerverifiedTrue

A heat-pump-style room air conditioner has all the major components of a cooling-only unit with the addition of a ____.

Correct AnswerverifiedShow Answer

The evaporator typically operates _____ the dew point temperature of the room air.

Correct AnswerverifiedShow Answer

If a window air conditioner is installed with an inward pitch, the condensate could leak into the room.

Correct AnswerverifiedShow Answer

Some cooling-only window air conditioners are equipped with energy-saver switches. What is their purpose?

Correct AnswerverifiedThe purpose of this switch is ...View AnswerShow Answer

Why do room air conditioners ice up easier than central air-conditioning systems?

Correct AnswerverifiedRoom air conditioner...View AnswerShow Answer

The metering device in a modern room air conditioner is a(n) ____________________.

Correct Answerverifiedcapillary tube

In a heat-pump-style room air conditioner in the heating cycle, the indoor coil acts as the ____________________.

Correct AnswerverifiedShow Answer

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The window air conditioner may be removed and the window restored to its original use. The wall installation is permanent because a hole is cut in the wall and must be patched if the unit is removed.

Correct Answer
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Correct Answer
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1 Keeps the unit fro...
View Answer

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True

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The purpose of this switch is ...
View Answer

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Room air conditioner...
View Answer

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capillary tube

Correct Answer
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