Desa CHD12B User manual

1
Portable
Infra-Red
Camp Heater
Owner’s Manual
Model CHD12B
Heater Size: 8,000 – 12,000 BTU/Hr
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WARNING
FOR YOUR SAFETY
If you smell gas:
1. Shut off gas to appliance.
2. Extinguish any open flame.
FOR YOUR SAFETY
Do not store or use gasoline or other
flammablevaporsandliquidsinthevicin-
ity of this or any other appliance.
WARNING CARBON MONOXIDE HAZARD
This appliance can produce carbon
monoxide which has no odor.
Using it in an enclosed space can kill you.
Never use this appliance in an enclosed
space such as a camper, tent, car, or home.

2
Safety Information
WARNINGS
Read and understand this manual before using this heater. Improper use of this heater can cause
serious injury. Do not allow anyone who has not read this manual to operate this heater. Keep this
manual for reference. It is your guide to safe and proper operation of this heater.
1. For outdoor use only. Do not use inside house, camper, tent, vehicle, or any type of unvented or
enclosed area.
2. Use heater in areas free from open flames, combustible vapors, and dust.
3. Never operate heater while sleeping or unattended.
4. Minimum heater clearances from combustibles: Top, Front, and Sides: 1 m (3 ft)
5. This heater consumes air. Provide a fresh air opening of at least 77 cm2(12 in2).
6. Use only propane gas set up for vapor withdrawal.
7. The LP gas cylinder must be constructed and marked in accordance with the specifications for
the LP gas cylinders of the US Department of Transportation (DOT) or Transport Canada.
8. Before each use, check heater for leaks. Never use an open flame to check for a leak. Apply a
mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at
once.
9. Locate propane tank on a stable and level surface. The heater burner must be at least 0.61 m
(24 in) above the floor. Always attach heater to propane tank in an upright position. Never
operate heater on its side or attach to propane tank in a horizontal position. This could lead to
dangerous flare-ups or fire.
10. Keep children and animals away from heater.
11. Do not use heater below ground level. Propane is heavier than air. If a leak occurs, propane gas
will sink to the lowest possible level. If you smell gas or suspect a leak, shut off the propane tank
valve at once and ventilate the area. Do not strike a match or create any flame or electric spark.
Find and correct the leak before attempting to light any appliance. If you cannot correct leak, do
not tamper with heater. Return heater to nearest authorized service center or to address on back
page of this manual, freight prepaid.
12. Do not move or handle a hot or operating heater. Do not attach or remove a hot or operating
heater from the propane tank. Severe burns may result.
13. Storage of heater is permissible only if the cylinder is disconnected and removed from heater.
14. Always remove heater from propane tank after each use. Always store propane tank outdoors in
a well ventilated space out of the reach of children. Never store propane tank in a building,
garage, or any other enclosed area. Never store propane tank near high heat, open flame, or
where temperatures exceed 38°C (100°F).
15. For use with 20 pound propane cylinders or larger.

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Connecting HeaterTo PropaneTank
Read and understand all safety information before connecting heater to propane tank.
1. WARNING: Make sure there is no open flame in the area. Make sure heater regulator knob is
in the “OFF” position.
2. Keep all connections and fittings clean. Make sure the propane tank valve outlet is clean. Check
the rubber “O” ring on the heater inlet fuel connector for damage before each use. Replace if
worn or damaged.
3. Wrench tighten the fuel connector nut into the propane tank valve (see Figure 1). Turn fuel
connector nut counterclockwise to tighten. Threads are left-handed. WARNING: Attach heater in
upright position as shown in Figure 1. Never attach heater in a horizontal position. This
could lead to dangerous flare-ups or fire.
4. Open propane tank valve on propane tank slowly.
5. Check all fittings for leaks. Apply a mixture of liquid soap and water to all joints. Bubbles forming
show a leak. Correct all leaks at once. WARNING: Never use an open flame to check for a
leak.
Figure 1
Heater
Regulator
Knob
Fuel Connector Nut
Propane
Tank Valve

4
Lighting Heater
Read and understand all safety information before operating heater.
1. WARNING: Make sure there is no open flame in the area. Make sure there are no flam-
mable vapors or liquids in the area during lighting. Fully open the propane tank valve.
2. Turn the heater regulator knob counterclockwise to the “HI” position.
3. WARNING: Stand to the side of the heater while lighting. Do not stand or have any part of
your body in front of heater while lighting. Locate ignition hole in underside of burner (see
Figure 3). Hold a lit match under ignition hole.
CAUTION: Do not insert match into air inlet holes in mixing tube. Push in the safety shutoff
valve plunger (see Figure 3). WARNING: Do not push in safety shutoff valve plunger before
inserting lit match. Burner should light. Mesh screen on burner glows red when lit. After burner
is lit, continue holding in safety shutoff valve plunger for 10 to 30 seconds until heater stays lit.
4. If the burner does not light within 30 seconds, turn the regulator knob to the “OFF” position. Wait
at least two minutes for the gas to dissipate before relighting.
5. If heater will not light after repeated trys, do not attempt to repair heater. Return heater to nearest
authorized service center or to address on back page of this manual, freight prepaid.
6. After heater stays lit, turn the heater regulator knob to the desired heat setting (LOW, MED, or HI).
Ignition Hole
Figure 3
Figure 2
Safety Shutoff
Valve Plunger
Air Inlet
Hole
ToTurn Off Heater
1. Tightly close propane tank valve by turning clockwise.
2. Turn the heater regulator knob to the “OFF” position. Wait at least 15 minutes for the heater to
cool before handling heater.
Heater
Regulator
Knob

5
MAINTENANCE
WARNING:
• Never attempt to service heater while it is connected to propane supply, operating, or hot.
Severe burns can occur.
• Keep heater clear and free from combustible materials, gasoline, and other flammable
vapors and liquids.
• Do not block the flow of combustion or ventilation air.
1. Keep heater clean. Clean heater annually or as needed to remove dust and debris. If heater is dirty
or dusty, clean heater with a damp cloth. Use household cleaners on difficult spots.
2. Inspect heater before each use. Check connections for leaks. Apply mixture of liquid soap and
water to connections. Bubbles forming show a leak. Correct all leaks at once.
3. Inspect hose/regulator assembly before each use. If hose is highly worn or cut, replace.
4. Have heater inspected yearly by a qualified service agency.
REPLACEMENT PARTS
Parts Under Warranty
Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA
Industries at 1-905-826-8010.
When calling DESA Industries, have ready:
• your name and address
• model and serial numbers of your heater
• how heater was malfunctioning
• purchase date
In most cases, we will ask you to return the defective part to the factory.
Parts Not Under Warranty
Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA
Industries’ Parts Department at 1-905-826-8010.
When calling DESA Industries, have ready:
• model and serial numbers of your heater
• the replacement part number
WARNING: Use only original replacement parts. This heater must use design-specific
parts. Do not substitute or use generic parts. Improper replacement parts could cause
serious or fatal injuries. This will also protect your warranty coverage for parts replaced
under warranty.