Mr. Heater MH12 User Manual
ASSEMBLY AND OPERATING INSTRUCTIONS FOR
Model No. MH12, INFRA-RED CAMP HEATERS
No. Description
1 Wire Guard
2 Mesh Screen
3 Thermo-Couple
4 Regulator Valve Knob
5 Regulator
6 Propane Gas Cylinder
7 Reflector Bowl Assembly
8 Mixing Tube
9 Orifice
10 Mixing Tube Lock Nut
11 Valve Button
12 Safety Shut-Off Valve
13 Plastic Stand
Model MH12
ENERCO / MR HEATER
4560 W. 160
TH
ST., CLEVELAND, OHIO 44135
TEL: 1-800-251-0001 FAX: 1-800-321-0552
1
GENERAL
A new feature of the series MH12 heaters is a 3-step regulator valve that has a high setting and a low setting. The Infra-Red series
MH12 camp heaters are tested and shipped from the factory assembled, except for the propane gas cylinder. The Camp Heaters
will operate approximately –
18 ½ hours on No. 2011 P.O.L. Cylinder – Refillable
37 hours on No. 2020 P.O.L. Cylinder – Refillable
Above figures are calculated on the assumption that the heater is turned “Full On” at all times. Because it will not be necessary in
many cases to have the heater turned “Full On” at all times, you can count on considerably longer burning times for each cylinder.
Cylinders are available in most sporting goods stores, camping centers and propane outlets.
1 ½ hours on a 14 oz. Cylinder - Disposable
ASSEMBLY INSTRUCTIONS FOR MODEL MH12
DIRECTLY CONNECTED TO CYLINDER
1. Make sure Hi-Med-Low-Off knob is turned fully clockwise to “Off.”
2. Inspect the condition of the flat rubber washer in the regulator for dirt or damage. (Do this each time the cylinder is attached.)
3. Carefully screw the heater onto the cylinder filled with propane. (Make sure no open flame is in the area.)
4. Check its connection by brushing on soapy water. If bubbles occur, tighten connections and again brush on soapy water.
CONNECTIONS MUST BE GAS TIGHT. SEE LIGHTING INSTRUCTIONS BEFORE LIGHTING.
CAUTION: THIS APPLIANCE CONSUMES AIR.
When used indoors (such as in tents, tent trailers, fishing huts, cabins, houses, house trailers) ALWAYS BE SURE TO
PROPERLY VENTILATE THESE ENCLOSURES in which the heater is being used, by providing a fresh air opening of at
least 12 square inches. When used indoors (such as in the enclosures listed above), mount the appliance on a horizontal
surface at least 24” above the floor and make sure the heater is NOT within 50 feet of flammable vapors and clear of all
combustible materials by the following measurements:
Top: 20 ½ “ 52.2 cm
Sides: 9” 22.9 cm
Front: 28” 71.2 cm
Rear: 8” 20.3 cm
DO NOT LEAVE YOUR APPLIANCE UNATTENDED.
DO NOT OPERATE YOUR APPLIANCE WHEN SLEEPING.
LIGHTING INSTRUCTIONS:
1. After complying with the Assembly Instructions, turn regulator valve knob anti-clockwise to “Low” position.
2. Apply lighted match to bottom of mesh screen.
3. Push in valve button to ignite, then slowly release after 20 seconds.
4. Repeat Step #2 and #3 if heater does not stay lit.
5. To turn heater “Off” –
Models MH12, MH12T – Turn regulator knob clockwise to “Off” position. Turn off gas supply at cylinder.
REGULATING:
Heater output can be adjusted by turning the valve knob to “Low”, “Med.” Or “Hi” position.
WARRANTY:
Camp Heaters No. MH12 series are covered by a one-year warranty against defective materials and workmanship, dating from the
original purchase. Replacements will be made on any part returned prepaid through the dealer and claimed within the warranty
period to be defective and found by the company upon examination to be so defective. Replacement shall be F.O.B.; Mr. Heater
Corp. shall not be liable for drayage or labor costs.
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