ACR-202-Unit 26 - Applications of Refrigeration Systems

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

• self-contained

• remote

• local

• hybrid

The three-way heat reclaim valves in most heat reclaim systems are ____ operated.

• relay

• contact

• switch

• solenoid

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

• pilot

• reload

• preload

• pressure

When a parallel heat reclaim system is used, the heat reclaim condenser must be sized to handle ____% of the refrigeration system’s rejected heat when in the heat reclaim mode.

• 50

• 70

• 80

• 100

Heaters that are made with resistance-type wire run just under the surface of the cabinet are called ____ heaters.

• anticipation

• relief

• mullion

• reclamation

Knock-down walk-in coolers are constructed of interlocking panels from ____ thick.

• 1 in. to 4 in.

• 1 in. to 6 in.

• 2 in. to 4 in.

• 2 in. to 6 in.

In condensate removal, the drain lines should be sloped downward about ____ in. per foot for proper drainage.

• 1/8

• 1/6

• 1/4

• 1/2

The precharged tubing used for installing refrigeration piping is called a ____.

• line set

• gauge set

• log set

• completion set

One of the advantages of parallel compressor systems is ____.

• load matching

• flexibility

• less compressor cycling

• All of the above.

The most popular secondary fluid currently used in refrigeration systems is ____.

• HFE

• ethylene glycol

• HCFC

• propylene glycol