HVAC Excellence - Heat Pump - Weeks 1
and 2 - COMBINED
A high efficiency warmness pump system, designed to function from high to low ambient
situations below 10*F, may additionally have _____________________. - ANS-an auxiliary
warmness exchanger injected with ethylene glycol solution.
An air-to-air warmness pump has a number of the identical components as an aircon machine.
The most important distinction is that a heat pump also has a/an - ANS-Reversing valve
An R-410A heat pump working in the cooling mode has a suction strain of 131 PSIG. Adding 2
PSIG for strain drop in the coil, the genuine outlet strain is 131 PSIG. The temperature of the
suction line at the outlet of the evaporator is 57° F. What is the superheat? - ANS-12 Degrees
An R410A warmth pump working inside the heating mode has a suction strain 50 PSIG and
head pressure of 285 PSIG has a compression ratio of __________________. - ANS-4.6:1
At what temperature is an out of doors ambient thermostat normally set? - ANS-Slightly above
the initial balance point.
Good carrier exercise for installation of a reversing valve consists of
___________________________________. - ANS-Use warmth paste and moist rags while
brazing in the new valve.
Heat pump mode performance is rated in ______________. - ANS-HSPF.
How is defrost terminated in this device? - ANS-Either the time or temperature termination
requirements has been satisfied.
How can also a lockout (impedance) relay be reset? - ANS-Simply disconnect electricity to the
unit momentarily.
If producer specs aren't to be had, a very good way to calculate cubic ft in keeping with minute
through a coil is to ________________. - ANS-Use temperature upward push on emergency
warmness mode.
If the indoor fan is operated at an excessive pace within the cooling mode,
_________________________. - ANS-The system will no longer well take away the humidity
from the conditioned area.
and 2 - COMBINED
A high efficiency warmness pump system, designed to function from high to low ambient
situations below 10*F, may additionally have _____________________. - ANS-an auxiliary
warmness exchanger injected with ethylene glycol solution.
An air-to-air warmness pump has a number of the identical components as an aircon machine.
The most important distinction is that a heat pump also has a/an - ANS-Reversing valve
An R-410A heat pump working in the cooling mode has a suction strain of 131 PSIG. Adding 2
PSIG for strain drop in the coil, the genuine outlet strain is 131 PSIG. The temperature of the
suction line at the outlet of the evaporator is 57° F. What is the superheat? - ANS-12 Degrees
An R410A warmth pump working inside the heating mode has a suction strain 50 PSIG and
head pressure of 285 PSIG has a compression ratio of __________________. - ANS-4.6:1
At what temperature is an out of doors ambient thermostat normally set? - ANS-Slightly above
the initial balance point.
Good carrier exercise for installation of a reversing valve consists of
___________________________________. - ANS-Use warmth paste and moist rags while
brazing in the new valve.
Heat pump mode performance is rated in ______________. - ANS-HSPF.
How is defrost terminated in this device? - ANS-Either the time or temperature termination
requirements has been satisfied.
How can also a lockout (impedance) relay be reset? - ANS-Simply disconnect electricity to the
unit momentarily.
If producer specs aren't to be had, a very good way to calculate cubic ft in keeping with minute
through a coil is to ________________. - ANS-Use temperature upward push on emergency
warmness mode.
If the indoor fan is operated at an excessive pace within the cooling mode,
_________________________. - ANS-The system will no longer well take away the humidity
from the conditioned area.
