Most heat pumps have two metering devices because
A) one metering device serves as a backup to the primary metering device
B) two metering devices allow for extra refrigerant flow at low outdoor temperatures
C) each coil must function as the evaporator during one of the cycles
D) two metering devices allow two stage operation
C
You might also like to view...
The exhaust stroke of a four?stroke cycle engine occurs when the piston reaches
the bottom and starts upward.
Indicate whether the statement is true or false.Per capita use of milk and dairy products in the United States annually is about:
a. 580 pounds c. 770 pounds b. 650 pounds d. 800 pounds
The soils report provides information about the subsurface conditions at the site obtained from bore holes or other investigations made by the topographic engineer.
Answer the following statement true (T) or false (F)
Hammers that have a ____________________ handle are used for framing and general carpentry
Fill in the blank(s) with correct word