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Furnace
Dometic DFSD 12111 Furnace
Introduction:
The following instructions are an extract from the Operation Manual published by the manufacturer Dometic
Corporation. These instructions are a guide to operation of the furnace only.
The manufacturers Operation Manual included with the product MUST be read in its entirety before operating
this appliance.
Should you require further information, contact Dometic https://www.dometic.com/en-us/outdoor/support
General Safety
The manufacturer states the following:
FIRE OR EXPLOSION HAZARD
Failure to obey the following warnings could result in
property damage, serious injury or death.
• Do NOT store gasoline, oil- or gasoline-soaked rags, or other flammable vapors and liquids inside storage
compartment(s)
• BEFORE refuelling or parking near a gasoline pump, make sure ALL liquid propane (LP) gas appliances
(vented to the outside of the RV) are shut OFF. Otherwise, fumes from gasoline pumps could come into
contact with an LP gas appliance burner flame and ignite.
• Turn OFF LP gas supply at the tank. • Keep the Furnace area free and clear of insulating material, as
insulating materials may be combustible. Examine the Furnace area after installation or when insulation is
added.
• Use only with the type of gas approved for the Furnace. Refer to the Furnace rating plate.
o All DFSA, DFS, DFM, and DFLD models: LP ONLY
• Do NOT overfill LP gas tanks. LP tanks must be filled by a qualified gas supplier only. Follow the tank
manufacturer’s operating instructions located on the tank.
• Immediately shut down the Furnace and call a service agency if the Furnace cycles erratically or delays on
ignition.
• Shut OFF the gas valve to the Furnace before shutting off the electrical supply if the gas supply fails to
shut off, or if overheating occurs.
CARBON MONOXIDE HAZARD
Failure to obey the following warnings could result in
property damage, serious injury, or death:
• This Furnace can produce carbon monoxide, which has no odor and can be life-threatening. The burner
and vent assembly system MUST be kept clean.
• Do NOT operate the Furnace if venting into a room enclosure with the privacy panels closed. At least one
panel MUST be open for ventilation when using the Furnace.
• Doors MUST be properly sealed, and the draft cap and assemblies MUST be adjusted and sealed correctly
to prevent carbon monoxide from entering the RV.
• Do NOT allow snow or any objects to block the exhaust system of the Furnace.
• Combustion products MUST be properly vented to the atmosphere, so that all combustion air supplied to
the burner is drawn from the outside atmosphere.
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