Unit 40

Most occupants will normally operate their system at about ____°F.

• 68

• 72

• 75

• 80

AHRI rates condensers with ____°F air passing over them.

• 70

• 75

• 85

• 95

At what conditions are air-conditioning systems rated?

• 95°F outdoors - 70°F DB - 50% indoors

• 95°F outdoors - 75°F DB - 50% indoors

• 95°F outdoors - 80°F DB - 50% indoors

• 100°F outdoors - 80°F DB - 60% indoors

At typical operating conditions, the standard air-conditioning system will operate with an evaporator boiling point of ____°F.

• 40

• 45

• 50

• 55

A normal evaporator superheat at the evaporator outlet in a standard efficiency air-conditioning system operating under design conditions will be ____°F.

• 10

• 15

• 20

• 25

At typical operating conditions, the high efficiency air-conditioning system will operate with an evaporator boiling point of ____°F.

• 40

• 45

• 50

• 55

A more accurate rating system for air-conditioning equipment that takes into consideration operation during the complete cycle is the ____ standard.

• ARI

• ACCA

• SEER

• EER

The ____ rating is a steady-state rating and does not account for the time the unit operates before reaching peak efficiency.

• ARI

• ACCA

• SEER

• EER

Ratings that are not completely accurate are known as ____.

• load ratings

• maximal ratings

• nominal ratings

• floor ratings

Since the evaporator absorbs both sensible and latent heat, humidity must be taken into account and considered part of the load on the evaporator.

• true

• false