Explain the relationship between the static pressure drop across an evaporator coil and the airflow going over the coil
What will be an ideal response?
With a clean coil, a higher static pressure drop reading across the coil indicates increased airflow through the coil.
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Explain and discuss the factors involved with cost control.
What will be an ideal response?
A common method of starting defrost uses an air pressure switch that measures the difference in pressure ____.
A. between the fan compartment and the evaporator coil B. between the outdoor pressure and the fan discharge pressure C. of the air across the outdoor coil D. of the refrigerant in the condenser and the pressure in the coil
In platform framing, subfloors commonly have a tongue-and-groove pattern in the edge to _____.
A. reduce the need for insulation B. help minimize floor squeaking C. allow fewer joists to be used D. block the entry of mold-laden air into the duct system
A typical transaxle repair kit only consists of snap rings and gasket.
a. true b. false