7-3
SECTION 7
HEATING & AIR CONDITIONING
7
- HEA
TING &
AIR C
O
NDITIONING
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 elec-
tricity, it provides economical heat inside your
coach and helps reduce the use of LP gas for heat-
ing in cooler weather.
A heat pump can be thought of as an air con-
ditioner 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 in-
side of the coach to maintain a comfortable tem-
perature.
The efficiency of a heat pump decreases as the
outdoor air temperature drops, so supplementary
heat is often needed when the outside tempera-
ture nears freezing. This system is set to automat-
ically 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 tem-
peratures 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 ini-
tially.)
•
When the thermostat is satisfied, the heat
pump and furnace will both shut off.
•
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.
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 grill in the lounge area.
DUCTED ROOF AIR
CONDITIONING SYSTEM
The furnace thermostat also controls ducted
roof air conditioner operation when the thermo-
stat switch is placed in ‘cool’ position.
Gas Heat = Gas Furnace
Electric Heat = Heat Pump
Cool = Roof Air Conditioner
