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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.
The furnace acts as a standby heat source if
the outside temperature drops below a point that
the heat pump can no longer extract heat from
the outside air to maintain the desired inside
temperature.
Thermostat Switch
Gas Heat = Furnace Only
Elec Heat = Heat Pump
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 filter should be checked monthly for dirt
build-up and replaced as needed.
•
The air filter is a foam type and can be
washed and reused. It is located in the return
air grille on the ceiling.
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.
HEATING & AIR CONDITIONING
NOTE: The thermostat is equipped with a re-
placeable 2 Amp fuse located on the back
of the thermostat body.
Refer to the manufacturer's information in
your Owner InfoCase for complete operating
instructions.
NOTE: The ducted roof air conditioning system
has ceiling registers that can be closed if
necessary to force more cool air toward
a specific area of the coach or to route
cool air away from a specific area. If too
many vents are closed, however, it can
cause the air conditioner unit to shut
down, particularly in high humidity con-
ditions.
All cooling functions controlling to setpoint
have a short cycle protection time delay of 3
minutes. There will be no delay if the cycle OFF
time exceeds 3 minutes.
SECTION 7
7-3
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