A heat pump outdoor unit is installed:
A) Directly on the ground.
B) On a concrete pad.
C) On a raised platform above the snow line.
D) In an excavation whose bottom is below the frost line.
[Ques. 2] A two-pipe system should be installed with the suction at the oil pump greater than what measure?
A) 6 in Hg B) 16 in Hg C) 12 in Hg D) 17 in Hg
[Ques. 3] What are the two main types of duct-cleaning equipment being used?
A) Ultraviolet units and ultrasonic particle precipitators
B) Units that use high-velocity air and units that use sprayed cleaning compounds
C) Units that use brushes and vacuum and units that use ultrasonic particle precipitation
D) Large truck-mounted units and small portable units
[Ques. 4] What are TAB contractors commissioned to do on HVACR systems?
A) Perform quality control checks on a system. B) Train technicians on how to operate systems.
C) Complete installation of the entire system. D) Calibrate test instruments.
[Ques. 5] Suction line filters are generally designed:
A) To be removed after the system is clean.
B) To be interchangeable with liquid line driers.
C) For biflow capability in heat pumps.
D) To stay in the system permanently once installed.
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