Author Question: How should refrigerant be recovered from a chiller? A) Always begin the refrigerant recovery ... (Read 135 times)

sam.t96 · **on:** Jul 24, 2018

How should refrigerant be recovered from a chiller?

A) Always begin the refrigerant recovery using vapor recovery methods.
B) Always begin the refrigerant recovery using liquid recovery methods.
C) Refrigerant should be pushed out by pressurizing the chiller with 50 psig of nitrogen.
D) The chiller should be operated to build pressure before starting recovery.

Question 2

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

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