Explain the term "free cooling."
What will be an ideal response?
If the outside air is colder than the indoor air and the system thermostat is calling for cooling, the economizer can bring outside air into the system instead of operating the compressor.
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Which of the following makes the best conductor?
a. Rubber b. Aluminum c. Glass d. Plastic
The latitude at the equator is 90°
Indicate whether the statement is true or false
All construction activity and debris should be kept within the property boundaries unless permission is first obtained from neighboring landowners.
Answer the following statement true (T) or false (F)
The AC compressor clutch is being checked to see if it is engaged. Technician A says that if the drive belt is moving,the compressor is working. Technician B says that the compressor will often "click" when it is energized and deenergized. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B