What occurs after the pilot flame is proven on a gas furnace or boiler that uses spark ignition to light the pilot?
a. Sparking ceases.
b. Burners light.
c. Inducer starts.
d. Flame is sensed.
a. Sparking ceases.
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The rotating plate is similar to which other type of humidifier?
A) atomizing B) rotating-drum C) steam D) vaporizing
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Since ____ is prone to expansion, T&G installations should be primed on all sides and ends, and all joints sealed upon installation to minimize movement.
A. PT lumber B. thermally treated lumber C. wood composite D. plastic decking
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Why should furnaces not rest directly on the ceiling joists?
What will be an ideal response?
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On a negative-logic pulse, the trailing edge is the ________
A) negative-going edge B) HIGH-to-LOW transition C) falling edge D) positive-going edge
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