Owner`s manual
89
2008 LAPALMA XL
APPLIANCES — 4
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.
WARNING:
IF YOU SMELL GAS extinguish all
open flames and turn off the LP-Gas
primary valve. Liquid propane is a
highly volatile, extremely dangerous
gas. It can explode or ignite, which
may result 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.
They may spark, which can ignite.
Keep all open flames, 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.
NOTE:
For detailed information and
operating instructions, refer to the
furnace OEM manual.
Operation
The furnace works in the following mannor:
The wall thermostat sends a signal to the
front roof air conditioner circuit board, which
closes a relay. Closing a relay sends an electrical
signal to the furnace to begin the 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 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 satised,
the gas valve closes and extinguishes the burner.
The blower motor stops approximately two or
three minutes after cool down.
The furnace will operate when the
following conditions have been met:
1. LP-Gas primary valve on the LP-Gas
tank is open and the LP-Gas valve at
furnace is on.
2. House batteries in the motorhome are
fully charged.
3. Battery cut-out switch is on.
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 wall
thermostat will have to be cycled off.
Using the Furnace
Slide the ON/OFF switch
to the ON position.
Press the ZONE button
to select Zone 1.
Select the Furnace mode
on the Comfort Control
using the MODE button.
Select the desired
temperature using the
UP and DOWN arrow
buttons.
Tips:
After storage, the furnace may produce
a musty smell during the rst couple of
cycles.
Operating the furnace at an altitude
above 5,000 feet reduces the BTU output
due to air/fuel ratio.
The furnace will periodically need
serviced by a qualied technician. If
the furnace exhibits unusual symptoms
or noises, or has an unusual odor when
operating, have the furnace checked or
serviced.
050200m