Heat Pump Operation; Air Conditioner Maintenance; Furnace - Holiday Rambler Imperial 2008 Owner's Manual

APPLIANCES — 4

Heat Pump Operation

Heat Pump mode offers heat
by using the air conditioner
as a heat source. The air
conditioning principle is
reversed, supplying heated air
to the ceiling registers instead
of refrigerated air. Ambient
temperature limitations occur
in Heat Pump mode.
NOTE:
The roof air conditioner will not operate
in Heat Pump mode with ambient
temperatures at or below 30º F.
Aux Heat Mode:
If the Heat Pump mode is selected at or below
30° F., or if operating in Heat Pump mode and
temperature drops to 30º F., the air conditioner
stops Heat Pump operation and Aux Heat will
be displayed. The furnace is then selected as the
auxiliary heat source and will begin operation.
The furnace remains the primary heat source until
ambient temperature rises above 42º F.
When ambient temperature is between 30 and
42º F., a defrost cycle is initiated approximately
every 40 minutes of compressor operation. The
blower motor will stop for fi ve minutes and
Defrost will be displayed. After the defrost cycle
heat pump operation resumes.
NOTE:
If equipped with an optional Aqua-
Hot, it must to be on for Aux Heat
to function. Turn on the Aqua-Hot
diesel burner or electric element. The
exchanger blowers automatically begin
operation in Auxiliary Heat mode.
100
Heat Pump Operation:
Turn ON interior house power.
Slide the ON/OFF switch to the ON
position.
Press the Zone button to select Zone.
HEAT
Press the MODE button repeatedly until
PUMP
Heat Pump is displayed.
Set desired fan speed by pressing the
FAN button.
Press the UP or DOWN buttons to set
050200b
desired heating temperature.

Air Conditioner Maintenance

Return Air Filters:
Frequently clean the return air fi lters. The fi lters
are located inside the A/C behind the intake
vent covers. Small, plastic covers hinge at the
rear with catches at the front. Grasp the leading
edge and pull down to open. The other fi lters are
accessed by lowering a decorative ceiling panel.
To lower the panel, use a ratchet and a 7/16"
socket with an extension. Remove bolts on the
road side and gently lower panel. The panel is
hinged on the curb side. The fi lters are secured in
place with screws. Operating the air conditioner
without the return air fi lters in place may plug the
evaporator core with dirt and substantially affect
the performance of the air conditioner.
NOTE:
Place a protective barrier, such as a
cotton towel, between the mirrored
surface and tool work area to prevent
scratching when accessing filters.
2 00 8 I MP E R I A L
To Clean the Return Air Filters:
Wash fi lters in warm soapy water. DO
NOT use solvents.
Rinse fi lters thoroughly with fresh water.
Allow them to dry.
Install fi lters and secure intake vent covers.
Ensure the A/C cover screws (location as
illustrated by arrows) are tight when the roof is
accessed.

FURNACE

The furnace and its related components are
12 Volt DC operated, using LP-Gas as the fuel
source. Electronic circuitry (automatic ignition)
is used to ignite the burner. The furnace uses
outside air for the burner combustion and
exhaust is expelled through the outside vent.
Inside air is drawn into the furnace and blown
across the internal heat exchanger. Heated air is
then discharged through ducted hoses which run
throughout the motorhome.
CAUTION:
Do not store any items/materials in
furnace area. Restricted air flow may
hamper furnace operation leading to
failure and/or fire hazard.
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