Air-source packaged heat pumps are commonly available in:
A) Top discharge, bottom discharge, and floor mount configurations.
B) Gas-fired, oil-fired, and electric units.
C) Side discharge, bottom discharge, or wall mount configurations.
C
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In the accompanying figure, how long is dimension x? All dimensions are in millimeters. Give your answer to two decimal places.
What will be an ideal response?
The move to cities led to what major and enduring change in American lifestyles?
A. delayed marriages B. fragmented family life C. more waste and the need for waste disposal D. an emphasis on thrift E. the relocation and transformation of the rural general store into a comparable urban general store in the cities
Where in the cycle does heat enter the refrigerant?
A) In the evaporator and compressor B) In the evaporator and condenser C) In the compressor and condenser D) Some heat is added in every component.
What is a low water cutout?
A) It is an operating control that energizes the water fill solenoid at the end of an automatic blow-down cycle. B) It is a safety device that shuts off the boiler if the water level is low. C) It is an operating control that shuts off the boiler at the end of every operating cycle when it senses that the boiler has used up its supply of water. D) It is a hand valve installed near the bottom of the boiler, which is used for filling and servicing the boiler.