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Appliances
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I M P E R I A L
4 • 1 0 8
To Clean:
• Remove the vent covers and filters.
• Wash the filters and covers in warm soapy water. Do not use solvents.
• Rinse the filters and cover thoroughly with fresh water and allow them to dry.
• Reinstall the filters and covers.
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 can be run throughout the motorhome. A warm air discharge is
incorporated to heat the motorhome’s holding tanks.
The furnace operates in the following manner: The wall thermostat sends a sig-
nal 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 air prover or sail switch. The sail switch,
which is now closed, sends the electrical signal through a high temperature protec-
tion switch, then to the automatic ignition circuit board. After the thermostat is sat-
isfied, the gas valve closes and extinguishes the burner. The blower motor stops
about two or three minutes after cool down.
The furnace will operate when the following conditions have been met:
1. The LP-Gas valve on the LP tank is open and the LP-Gas valve at the
furnace is on.
2. The house batteries in the motorhome are charged.
WARNING: IF YOU SMELL GAS extinguish all open flames
and turn off the main gas supply. 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 pro-
ducing 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.
FURNACE
Operation
Содержание imperial 2001
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