On a dual-fuel heat pump, why does the heat pump outdoor unit normally shut off when the furnace comes on?

A) With both operating, the hot supply air causes customer complaints.
B) The hot air leaving the furnace would cause very high head pressures on the heat pump.
C) The air can only go across one appliance at a time.
D) The combined amp draw of the furnace and heat pump is too high.


B

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A. ?1/8" = 1'-0" B. 3/8" = 1'-0" C. 1/4" = 1'-0" D. ?1/2" = 1'-0"

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Sensors and nonlinear devices are accurate only within a specified range.

Answer the following statement true (T) or false (F)

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Because the drive shaft rotates at high speeds and at varying angles, what is required to reduce vibration?

What will be an ideal response?

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A) Schottky B) Shockley C) Belrus D) Brattain

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