What causes soot buildup in the heat exchanger and vent?
A) Soot buildup is a normal consequence of any combustion process
B) Soot buildup is caused by incomplete combustion
C) Soot buildup is caused by using high carbon fuel oil
D) Soot buildup is caused by low indoor air flow
B
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A material that readily and actively absorbs water is considered _____.
a. hygroscopic b. anhydrous c. a hydrocarbon d. saturated
Explain how the reaction is controlled in the Rx-202 system.
What will be an ideal response?
Which of the following compressors is not considered a positive displacement compressor?
A) Screw B) Rotary C) Reciprocating D) Centrifugal
The ENERGY STAR® label is awarded to those packages air-to air units with EERs of ________ or greater, SEERs of ________ or greater and HSPFs of ________ or greater
A) EER 12, SEER 14.5 , HSPF 8.2 B) EER 11, SEER 14, HSPF 8 C) EER 10, SEER 13, HSPF 7.7 D) EER 16, SEER 22, HSPF 13