Exam 38: Installation

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

Once the power has been connected to the condensing unit of a package air conditioner, it is a good idea to start the compressor immediately to make certain it runs.

A good way to fasten acoustical lining to the inside of sheet metal duct is to use ____.

What two fasteners are used with sheet metal square and rectangular duct?

A fitting used to change the size of a square or rectangular duct is called a(n) ____________________.

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

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

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?

A boot in a duct system is a fitting used ____.

One purpose of a flexible duct connector in a duct system is to reduce the transmission of noise and vibration.

Explain service accessibility.

Power to the control transformer is controlled by the conditioned area thermostat.