Holiday Rambler - Furnace; Operation

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ap p lI a nC e s - 4
To Lower Vent Covers:
Use a suitable driver or coin to unscrew
vent intake cover fastener.
Remove cover and lter.
To Clean the Return Air Filters:
Wash lters in warm soapy water. Do
not use solvents.
Rinse lters thoroughly with fresh
water. Allow them to dry.
Install lters and secure intake vent
covers.
Mounting Bolts:
The AC mounting bolts should be re-
torqued every six months. Four bolts are
located behind the return air lter. Torque the
mounting bolts to approximately 40 to 50 in.
lbs. The base gasket should be compressed to
approximately ½".
AC Cover Screws:
Use a screwdriver to ensure the AC cover
screws are tight whenever the roof is accessed.
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FURNAcE
The furnace and related components are
12 Volt DC operated and use propane as the
fuel source. Electronic circuitry (automatic
ignition) ignites the burner. The furnace uses
outside air for burner combustion. 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
that run throughout the motorhome.The wall
thermostat controls the furnace.
Operation
The furnace is controlled by either an analog
thermostat used with standard roof A/C or
electronic thermostat used with roof A/C
with heat pump. The air conditioner sends an
electrical signal to the furnace to begin ignition
cycle. There is a small time delay before the
blower motor begins.
Once the blower motor attains a
predetermined speed it will close the air prover
or sail switch. The sail switch, which is now
closed, sends the electrical signal through a
high temperature protection switch, then to
the automatic ignition circuit board. After the
thermostat is satised the propane valve closes
and extinguishes the burner. The blower motor
stops after a two or three minute cool down
period.
INFORMATION:
See the furnace OEM manual for
complete operation information.
WARNING:
IF A PROPANE SMELL exists,
extinguish all open flames and turn
off the main propane supply. Propane
is an extremely dangerous gas that
can ignite and explode, resulting in
property damage, injury or death.
Propane is heavy and can float on
the floor or hide in corners. Open all
windows and doors. DO NOT touch
electrical switches as they may spark.
Keep open flame, spark producing
devices and smoking material out of
the area. Contact a qualified service
center to have the problem correctly
diagnosed and repaired before
resuming operation.
CAUTION:
Do not store any items or materials in
the furnace area. Restricted air flow
may hamper furnace operation leading
to failure and/or fire hazard.
NOTE:
The automatic ignition circuit board
will attempt to light the burner three
times before the ignition board will
go into “lock-out.” If the burner does
not light the furnace blower motor
will continue to run and the hand held
remote will have to be cycled off.
NOTE:
When washing the recreational vehicle
exterior, avoid a direct stream of water
into the outside furnace vents. This can
damage the furnace.
031221
Ensure the A/C cover screws (location
as illustrated by arrows) are tight when
the roof is accessed.