How is the refrigerant charge normally checked on air-conditioning systems that use a fixed orifice expansion device?
A) Subcooling
B) Feel to see if the suction line is cold and the liquid line warm.
C) Adjust the charge to achieve a 40°F saturated evaporator temperature.
D) Superheat
D
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Compared to people in other countries, ____________________ pay a very small portion of their income for food
Fill in the blank(s) with correct word
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What types of lines can be used for shading?
What will be an ideal response?
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Which safety rule item is not for the job site?
A. Wear gloves B. whear shorts C. Wear Safety glasses D. Avoid horseplay
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The electrical disconnect box for a rooftop unit is:
A) Mounted on the unit. B) Mounted on a separate post next to the unit. C) Not required for rooftop installations. D) Located inside to protect it from the weather.
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