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LM12345 LM12345
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6 years ago
When sheet metal straps are used to suspend fiberglass duct, what gauge and size of metal is required?
 
  a. 22-gauge metal; 1 wide minimum
  b. 28-gauge metal; 1 wide minimum
  c. 22-gauge metal; 1-1/2 wide minimum
  d. 28-gauge metal; 1-1/2 wide minimum

 Q. 2

A refrigeration system dataplate states that the low side test pressure is 150 psig. This means that:
 
  A) The low side pressure should be 150 psig when the system is running its self test.
  B) The low side pressure will be 150 psig when the system is operating at design conditions.
  C) The low side should operate with a pressure of 150 psig at all times.
  D) The low side should not be pressurized above 150 psig.

 Q. 3

If the low side test pressure is not know, the maximum pressure that should be used for leak testing an R-22 refrigeration system with hermetic compressor is:
 
  A) 150 psig. B) 300 psig. C) 200 psig. D) 250 psig.
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tobeddstobedds
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6 years ago
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LM12345 Author
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#2
6 years ago
Bravo! This is awesome
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#3
6 years ago
Glad my efforts were helpful
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