HVAC NATE HEAT PUMP verified A+ questions and
answers.
On an R-22 system, line 6-7PSI or 6F
diameters and lengths are
typically specified for a vapor
pressure drop that does not
exceed what?
What is the primary purpose Prevent Oxidation
of using flux when soldering
copper or brass parts?
The water that results from a Drain off and away from the outdoor coil.
defrost cycle of an air to air
heat pump(runoff) must?
Why must the runoff be drained Excessive ice can build up on the bottom of the coil and can reduce capacity.
off and away from the outdoor
coil?
What is the component that Curb Gasket
reduces sound transmission and
prevents water leaks of a
package heat pump installed
on a roof?
Why do you need to add a control So the heat pump and furnace do not operate at the same time in normal
for a heating.
heat pump indoor coil that is
installed on a fossil fuel
furnace?
What happens when you Motor windings could become damaged.
energize a hermetic
refrigeration compressor and
the system is in a deep
vacuum?
What needs to happen in order System should be evacuated to a vacuum of 500 Microns or below.
to consider an evacuation to be
complete?
, A system is supplied from the 6lbs
factory with charge for a 15
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.
How much refrigerant is needed
to completely charge the
system?
Where are drive slips typically On the shorter sides of rectangular duct.
installed?
What is a necessary check to Heating control circuit
properly set a heat anticipator? amperage draw.
A heat pump operating in Coil TD.
normal ice free conditions
maintains a certain temperature
difference between the
outdoor coil
temperature and the
surrounding outdoor ambient.
What is this temperature
referred to as?
What is the smallest refrigerant .o5oz per year.
leak that an electronic leak
detector should be capable of
sensing?
When checking the pressures in No
an
operating system with a manifold
gauge
set, will refrigerant oil in a hose
will have an effect on the
gauge?
answers.
On an R-22 system, line 6-7PSI or 6F
diameters and lengths are
typically specified for a vapor
pressure drop that does not
exceed what?
What is the primary purpose Prevent Oxidation
of using flux when soldering
copper or brass parts?
The water that results from a Drain off and away from the outdoor coil.
defrost cycle of an air to air
heat pump(runoff) must?
Why must the runoff be drained Excessive ice can build up on the bottom of the coil and can reduce capacity.
off and away from the outdoor
coil?
What is the component that Curb Gasket
reduces sound transmission and
prevents water leaks of a
package heat pump installed
on a roof?
Why do you need to add a control So the heat pump and furnace do not operate at the same time in normal
for a heating.
heat pump indoor coil that is
installed on a fossil fuel
furnace?
What happens when you Motor windings could become damaged.
energize a hermetic
refrigeration compressor and
the system is in a deep
vacuum?
What needs to happen in order System should be evacuated to a vacuum of 500 Microns or below.
to consider an evacuation to be
complete?
, A system is supplied from the 6lbs
factory with charge for a 15
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.
How much refrigerant is needed
to completely charge the
system?
Where are drive slips typically On the shorter sides of rectangular duct.
installed?
What is a necessary check to Heating control circuit
properly set a heat anticipator? amperage draw.
A heat pump operating in Coil TD.
normal ice free conditions
maintains a certain temperature
difference between the
outdoor coil
temperature and the
surrounding outdoor ambient.
What is this temperature
referred to as?
What is the smallest refrigerant .o5oz per year.
leak that an electronic leak
detector should be capable of
sensing?
When checking the pressures in No
an
operating system with a manifold
gauge
set, will refrigerant oil in a hose
will have an effect on the
gauge?
