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lacerna92 lacerna92
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6 years ago
What type of antifreeze solutions may be used in ground loops?
 
  A) any antifreeze that will extend the freezing point down to -35F
  B) low toxicity
  C) preferably ethylene glycol
  D) a brightly colored antifreeze solution should be used to make it visible in ground water

 Q. 2

How can air be removed from a newly installed ground loop?
 
  A) by purging the loop with nitrogen before connecting it to the system
  B) by running water through the loop after connecting it to the system
  C) by adding low-toxicity antifreeze to the system
  D) by temporarily connecting the purge unit
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ogilusinogilusin
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6 years ago
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