How does a hot gas defrost system work?

A) Hot compressor discharge gas is routed to the evaporator.
B) Gas flames provide the heat to melt the ice.
C) A warm glycol solution is sprayed on the coil.
D) The superheated gas leaving the evaporator is used to melt the ice.


A

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A(n) ____________________ rod may be used in welding to add metal to strengthen the bond

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

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The final step when solving equations  involving combined operations is to apply the power and root principles of equality if necessary.

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

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Why would you use supply registers with curved louvers?

A) The occupants feel less of a draft. B) The system has higher airflow. C) The system operates more efficiently. D) The air disperses throughout the room.

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The polarity of a tachometer output signal indicates the direction the device it measures is turning.

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

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