A heat pump defrost control must do three things: Turn on auxiliary heat, turn off the condensor fan motor, and:
A) Turn off the indoor blower fan B) Shift the reversing valve from heat to cool
C) Turn off the compressor D) Deactivate the thermostat
B
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Experts predict that the worlds population will exceed 10 billion people by 2025
Indicate whether the statement is true or false
How is a velometer used to determine the CFM at a supply register?
A) The average air velocity is multiplied by the free area of the register. B) The average air velocity is multiplied by 1.08. C) The average air velocity is multiplied by the face area of the register. D) The average air velocity is the same thing as CFM.
Which type of condenser uses a fan to push air across the condenser?
A) An induced-draft air-cooled condenser B) A packaged air-cooled condenser C) A natural-draft air-cooled condenser D) A forced-draft air-cooled condenser
Divide the following decimal fractions and round to two decimal places: 56" ÷ 0.23 =
Fill in the blank(s) with the appropriate word(s).