What characteristic makes a grille into a register?

a. An adjustable damper installed behind the face.
b. The absence of an adjustable damper behind the face.
c. Widely spaced louvers on the face.
d. Being designed to fit into a 24 × 24 suspended ceiling grid.


a

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The term _____ is based on a scale rule that is multiples of the 4" grid called the module.

A. course counter B. modular C. oversize brick D. engineer

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_______________ and ____________ pipes should be pitched toward the tank opening to prevent the formation of oil traps.

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

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When blowing through the vacuum supply hose, if air passes through the check valve into the booster __________

A) Replace the vacuum pump B) Replace the booster C) Replace the check valve D) The check valve is functioning properly

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The system ________ can communicate with each other and adjust system operation to match the heat load and operating conditions

A) Computers B) Components C) Remotes D) Controls

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