List the four categories of gas fired furnaces based on flue gas temperature and pressure

What will be an ideal response?


Category I, Category II, Category III, and Category IV

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The ____ are normally more specific in regard to the material strength and tolerances than are those in the Project Manual.

A. mechanical site plans B. floor plans C. elevations D. structural notes

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The ____________________ at the ends of the countergear control the amount of end clearance.

Fill in the blank(s) with the appropriate word(s).

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A circuit with excessive current flow ________

A) May cause a fuse to blow B) May create excess heat in conductors C) Both A and B D) Neither A nor B

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Which air impact drive size is the most commonly used?

A) 3/4 inch B) 1/4 inch C) 3/8 inch D) 1/2 inch

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