Question 1

Before a system is evacuated, all piping should be filled with nitrogen and a small amount of refrigerant, in order to be ___________________ checked.

Accepted Answer

The answer of Before a system is evacuated, all piping...

Question 2

The typical gauge wire that is used in low voltage control circuits is ____________________ gauge.

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The answer of The typical gauge wire that is used...

Question 3

Even though the cooling wire runs from the thermostat to the air handler, it actually just continues on to the condensing unit. Why isn't the cooling wire run directly from the thermostat to the condensing unit?

Accepted Answer

The answer of Even though the cooling wire runs from...

Question 4

What materials are normally used in air-conditioning duct systems?

Accepted Answer

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Question 5

Explain service accessibility.

Accepted Answer

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Question 6

Why is it necessary that the crankcase heater heats the compressor crankcase before starting the compressor?

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Question 7

How much does sunshine affect the operation of a condensing unit?

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Question 8

A split central air-conditioning system is installed with the control transformer located in the attic-hung air handler and the condensing unit located outside. The low voltage wire from the thermostat is run to the ____________________.

Accepted Answer

The answer of A split central air-conditioning system is installed...

Question 9

The line voltage for a system is normally installed by whom?

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Question 10

What does a technician do before altering a precharged line set?

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Question 11

A round to rectangular fitting is called a(n) ____________________.

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Question 12

If a duct system has large air leaks at the connections, what can be used to seal them up?

Accepted Answer

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Quiz 38: Installation