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Class A
HEAT PUMP
–Optional
Your coach may be equipped with an air
source heat pump built into the air conditioning
system. Because the heat pump operates on
electricity, it provides economical heat inside
your coach and helps reduce the use of LP gas for
heating in cooler weather.
A heat pump can be thought of as an air
conditioner running in reverse. An air
conditioner absorbs heat from the air on the
inside of the coach and moves it to the outside.
The heat pump does exactly the opposite. Even
cold air contains some heat, so a heat pump will
extract heat from the outside air on a cold day and
carry it to the inside of the coach to maintain a
comfortable temperature.
The efficiency of a heat pump decreases as the
outdoor air temperature drops, so supplementary
heat is often needed when the outside
temperature nears freezing. This system is set to
automatically start the LP gas furnace to assist
the heat pump if room temperature cools to 5
degrees or more below the thermostat set
temperature. You may wish to manually switch
to furnace heat to maintain a higher temperature
when outside temperatures begin to reduce the
efficiency of the heat pump. The heat pump will
not operate when the outside temperature falls
below 36 degrees F.
To Operate the Heat Pump:
•
Slide the Thermostat switch to Electric heat
mode.
•
If the inside temperature is 5 degrees or more
below the thermostat set point, both the heat
pump and the furnace will run initially to
bring the interior temperature up to the set
point as quickly as possible. (If the inside
temperature is 4 degrees or less below the set
point, then only the heat pump will run
initially.)
•
When the thermostat is satisfied, the heat
pump and furnace will both shut off.
– Heating and Air Conditioning
•
When the thermostat calls for heat again, only
the heat pump will run. The heat pump will
remain the sole heat source unless it cannot
maintain the inside temperature. If the inside
temperature falls five degrees below the set
point, the furnace will assist the heat pump
until the set point is reached.
If the furnace must assist the heat pump three
times in a row, the thermostat will shut down the
heat pump for two hours and the furnace will take
over as the heat source. After two hours the heat
pump will become active again and try to be the
primary heat source.
Gas Heat = Gas Furnace
Electric Heat = Heat Pump
Cool = Roof Air Conditioner
Have You Checked Your Air Filter
Lately?
Closed or blocked vents and a dirty air filter
can hinder the efficiency of a heat pump.
•
Be sure ceiling vents are open to distribute
heat pump output air.
•
The washable foam filter should be checked
monthly for dirt build-up and cleaned or
replaced as needed. It is located in the ceiling
mounted return AC grille in the lounge area.
DUCTED ROOF AIR
CONDITIONING SYSTEM
The furnace thermostat also controls ducted
roof air conditioner operation when the
thermostat switch is placed in position.
SECTION 7
7-3
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