HVAC NATE HEAT PUMP verified A+ questions and
answers.
R-22 vapor line diameters and 6-7 psi or 6 degress F
lengths are typically specified
for a vapor pressure
drop that does not exceed
The primary purpose of Oxidation
using flux when soldering
copper or brass parts is to
prevent
The water that results from a Excessive ice build up
defrost cycle of an air to air
heat pump (runoff) must
drain off and away from the
outdoor coil to prevent
The component used to reduce Curb gasket
sound
transmission and prevent water
leaks of a packaged heat pump
installed on a roof is the
When under a deep vacuum, a Damaged
hermetic refrigeration
compressor's motor windings
could be _ if energized
In order for an evacuation to be 500 microns or below
considered complete, a heat pump
refrigerant circuit should be
evacuated to a vacuum pressure
of
A system is supplied from the 6 lbs(25-15=10 10x0.6=6oz 6oz+5lbs 10oz= 5lbs 16oz the equilvalent of
factory with charge for a 15 6lbs)
foot line set. The data plate
shows the required system
charge to be 5 pounds 10
ounces. The line set uses a 3/8
inch liquid line and is 25 feet
, long. The manufacturer's
instruction sheet specifies
0.6 ounces of refrigerant to be
added for each added foot of
refrigerant line length so the
total refrigerant charge for
the system would be
Drive slips are typically installed Shorter
on the
_ __ sides of rectangular ducts
To properly set a heat heating control circuit amperage draw
anticipator it is necessary
to check the
A heat pump operating in Coil TD (temperature difference)
normal ice free conditions
maintains a certain temperature
difference between the
outdoor coil
temperature and the surrounding
outdoor ambient. This
temperature difference is
referred to as
The smallest refrigerant leak that 0.05 oz. per year
an
electronic leak detector should be
capable of sensing is
When checking the pressures in No effect
an
operating system with a
manifold gauge set, refrigerant
oil in a hose will have ___
_ _ on the gauge reading
answers.
R-22 vapor line diameters and 6-7 psi or 6 degress F
lengths are typically specified
for a vapor pressure
drop that does not exceed
The primary purpose of Oxidation
using flux when soldering
copper or brass parts is to
prevent
The water that results from a Excessive ice build up
defrost cycle of an air to air
heat pump (runoff) must
drain off and away from the
outdoor coil to prevent
The component used to reduce Curb gasket
sound
transmission and prevent water
leaks of a packaged heat pump
installed on a roof is the
When under a deep vacuum, a Damaged
hermetic refrigeration
compressor's motor windings
could be _ if energized
In order for an evacuation to be 500 microns or below
considered complete, a heat pump
refrigerant circuit should be
evacuated to a vacuum pressure
of
A system is supplied from the 6 lbs(25-15=10 10x0.6=6oz 6oz+5lbs 10oz= 5lbs 16oz the equilvalent of
factory with charge for a 15 6lbs)
foot line set. The data plate
shows the required system
charge to be 5 pounds 10
ounces. The line set uses a 3/8
inch liquid line and is 25 feet
, long. The manufacturer's
instruction sheet specifies
0.6 ounces of refrigerant to be
added for each added foot of
refrigerant line length so the
total refrigerant charge for
the system would be
Drive slips are typically installed Shorter
on the
_ __ sides of rectangular ducts
To properly set a heat heating control circuit amperage draw
anticipator it is necessary
to check the
A heat pump operating in Coil TD (temperature difference)
normal ice free conditions
maintains a certain temperature
difference between the
outdoor coil
temperature and the surrounding
outdoor ambient. This
temperature difference is
referred to as
The smallest refrigerant leak that 0.05 oz. per year
an
electronic leak detector should be
capable of sensing is
When checking the pressures in No effect
an
operating system with a
manifold gauge set, refrigerant
oil in a hose will have ___
_ _ on the gauge reading
