What is the purpose of excess air in furnace combustion?

What will be an ideal response?


Excess air insures that all the gas is burned by making sure there is plenty of oxygen available.

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What is the difference between a primary product, a byproduct, and a coproduct?

What will be an ideal response?

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The dead band in a two-position controller causes the outputs to change when input error is at plus one-half of the dead band and at minus one-half of the dead band

Indicate whether the statement is true or false

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The electronic (halogen) leak detector is the most expensive and sensitive of all leak detection devices.

Answer the following statement true (T) or false (F)

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SRS are generally referred to as _____.

A. seat belts B. desiccants C. air conditioning systems D. air bag systems

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