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Kaetlynrenae Kaetlynrenae
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6 years ago
Glycol solutions are added to water in secondary refrigerant loops
 
  A) To lubricate the circulating pump bearings B) To increase the system heat transfer
  C) To make leaks easier to locate D) To prevent freezing and inhibit corrosion

 Q. 2

When the thermostat calls for second stage heat on a dual fuel air source heat pump
 
  A) Both the heat pump and the furnace operate at the same time
  B) The furnace remains on and the heat pump is energized for additional heat
  C) The heat pump shuts down and the furnace comes on
  D) The furnace shuts off and the heat pump is energized in heating
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RANDAWOORANDAWOO
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6 years ago
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Kaetlynrenae Author
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#2
6 years ago
Good timing, thanks!
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