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How are the normal condenser and the heat reclaim condenser used when in the heat reclaim mode in a series heat reclaim system ?

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When a series heat reclaim sys...

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The primary advantage of parallel compressor systems is their ____.


A) higher efficiencies
B) nearly exact load matching ability
C) smaller locked-rotor amperage
D) limited effect of a compressor malfunction

E) A) and B)
F) A) and C)

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In a kitchen, ____ condensing units may be easier to maintain.


A) self-contained
B) remote
C) local
D) hybrid

E) A) and D)
F) B) and D)

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The precharged tubing for refrigeration piping is ____________________ at both ends and has quick connect fittings .

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Often, parallel compressor systems employ a satellite or booster compressor .

A) True
B) False

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Distributed supermarket refrigeration modules that are located very close to the display cases they refrigerate are becoming increasingly popular .

A) True
B) False

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Match each term with the correct statement below.

Premises
When air is used for controls
Usually installed in the heat reclaim pump-out or bleed line to prevent migration of refrigerant to the coldest location
Tremendous forces that can cause refrigerant lines and values to rupture
Applies a false load on the evaporator when there is no load
Removes refrigerant from the heat reclaim coil when it is not being used
Responses
bleed ports
check valve
liquid hammer
pneumatic control
hot gas bypass valve

Correct Answer

When air is used for controls
Usually installed in the heat reclaim pump-out or bleed line to prevent migration of refrigerant to the coldest location
Tremendous forces that can cause refrigerant lines and values to rupture
Applies a false load on the evaporator when there is no load
Removes refrigerant from the heat reclaim coil when it is not being used

Refrigerated compressed air driers typically run ____% of the time .


A) 30
B) 50
C) 80
D) 100

E) A) and D)
F) B) and D)

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The heat reclaim valve is a three-way valve that is activated by a solenoid operated by a ____ .


A) pilot
B) reload
C) preload
D) pressure

E) C) and D)
F) A) and B)

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At its triple point, CO2 can exist as ____ .


A) vapor
B) liquid
C) solid
D) All of the above.

E) All of the above
F) B) and D)

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Explain what pilot operation means.

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Pilot operation means that the...

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CO2, ammonia, propane, butane, and isobutane are all natural refrigerants .

A) True
B) False

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Carbon dioxide (CO2) is one of the newest refrigerants .

A) True
B) False

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____________________ are basically refrigeration systems located in the air supply, after the storage tank.

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Refrigerat...

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Showing 21 - 34 of 34

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