OPERATING INSTRUCTIONS
AND OWNER’S MANUAL
READ INSTRUCTIONS CAREFULLY: Read and follow all instructions. Place instructions in a safe
place for future reference. Do not allow anyone who has not read these instructions to assemble,
light, adjust or operate the heater.
Model #
MH12C
MH12CS
GAS-FIRED INFRA-RED
PORTABLE HEATER
CYLINDER NOT INCLUDED
MODEL
MH12C
WARNING:
— Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance.
— An LP cylinder not connected for use shall not be stored in the vicinity of this or any other appli-
ance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light appliance.
•
• Shut off gas to appliance.
— Service must be performed by a qualified service agency.
— DO NOT LEAVE HEATER UNATTENDED OR IN OPERATION WHILE SLEEPING
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
MODEL
MH12CS
Adequate combustion and ventilation air must be provided. Refer to page 3.
06/10 Revision Cmh #73304 MR. HEATER INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-881-5500
WARNING:
YOUR SAFETY IS IMPORTANT TO YOU AND TO OTHERS,
SO PLEASE READ THESE INSTRUCTIONS BEFORE YOU
OPERATE THIS HEATER.
GENERAL HAZARD WARNING:
FAILURE TO COMPLY WITH THE PRECAUTIONS AND
INSTRUCTIONS PROVIDED WITH THIS HEATER, CAN
RESULT IN DEATH, SERIOUS BODILY INJURY AND
PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE,
EXPLOSION, BURN, ASPHYXIATION, CARBON MONOXIDE POISONING, AND/OR ELECTRICAL SHOCK.
ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW
THE INSTRUCTIONS SHOULD USE OR SERVICE THIS
HEATER.
IF YOU NEED ASSISTANCE OR HEATER INFORMATION
SUCH AS AN INSTRUCTIONS MANUAL, LABELS, ETC.
CONTACT THE MANUFACTURER.
WARNING:
CARBON MONOXIDE CAN KILL YOU
USING A PORTABLE GAS CAMPING HEATER INSIDE A
TENT, RV, CAMPER, VEHICLE, SHELTER OR OTHER ENCLOSED AREAS CAN PRODUCE DEADLY CARBON MONOXIDE
WARNING:
NOT FOR HOME OR RECREATIONAL VEHICLE USE
WARNING:
FIRE, BURN, INHALATION, AND EXPLOSION HAZARD.
KEEP SOLID COMBUSTIBLES, SUCH AS BUILDING
MATERIALS, PAPER OR CARDBOARD, A SAFE DISTANCE
AWAY FROM THE HEATER AS RECOMMENDED BY THE
INSTRUCTIONS NEVER USE THE HEATER IN SPACES
WHICH DO OR MAY CONTAIN VOLATILE OR AIRBORNE
COMBUSTIBLES, OR PRODUCTS SUCH AS GASOLINE,
SOLVENTS, PAINT THINNER, DUST PARTICLES OR UNKNOWN CHEMICALS.
WARNING:
The State of California requires the following warning:
COMBUSTION BY-PRODUCTS PRODUCED WHEN US-
ING THIS PRODUCT CONTAIN CARBON MONOXIDE,
A CHEMICAL KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER AND BIRTH DEFECTS (OR OTHER
REPRODUCTIVE HARM).
CONTENTS
WARNINGS .................................................................................... 2
HOOKUP INFORMATION ................................................................ 3
ODOR FADE WARNING .................................................................. 4
GENERAL INFORMATION ............................................................... 4
FOR SAFE OPERATION ................................................................... 5
VENTILATION ................................................................................. 5
MINIMUM CLEARANCE FROM COMBUSTIBLE MATERIALS .............5
ASSEMBLY PROCEDURE ................................................................ 5
COOKING POSITIONS ................................................................... 6
LIGHTING INSTRUCTIONS ............................................................. 6
SHUTDOWN AND STORAGE INSTRUCTIONS .................................. 6
REPLACEMENT PARTS LIST ............................................................ 7
WARRANTY ................................................................................... 8
INSTRUCTIONS FOR ORDERING PARTS ...........................................8
Mr. Heater | Gas-Fired Infra-Red Portable Heater Operating Instructions and Owner’s Manual
2
HOOK-UP INFORMATION
1.1 Heater models MH12C and MH12CS are packaged completely
assembled except for metal stand. Propane cylinders are not
included with models MH12C and MH12CS.
1.2 Remove heater from carton.
1.3 Hold heater in one hand and with the other hand hold propane
cylinder vertically and carefully turn clockwise into heater valveregulator until snug. (Careful not to cross-thread) – Fig. 1 and
Fig. 2.
1.4 Use only LP-gas cylinders constructed for use with propane only
(HD-5) and marked in accordance with the specications for
LP-gas cylinders of the U. S. Department of Transportation (DOT
Spec. 39).
1.5 Use propane fuel cylinders of not more than 75 cubic inches
(2-1/2 pounds nominal water capacity) and connect to cylinder
valve outlet connection No. 600 as specified in the Compressed
Gas Associations Limited Standard Cylinder Valve Outlet
Connection for propane-small valve series.
VALVE/REGULATOR/#F273607
PUSH BUTTON
THERMOCOUPLE
SAFETY SHUTDOWN VALVE
KNURLED LOCK NUT
2.1 Grasp heater model by cylinder and hold wire stand with other
hand. Slide mounting clip on back of heater onto chrome plated
wire stand. Fig. 1 and 2.
2.2 Push igniter lead onto end of Sparklite Igniter on Model
MH12CS-Figure 2.
2.3 Make sure wire stand is on a at surface in the outdoors. See
paragraph 5 for additional assembly procedure.
2.4
WARNING
Never touch heater while in operation to avoid injury.
Move heater by grasping the propane cylinder carefully.
2.5 Read pages 3 and 4 before lighting heater.
FACE GAURD
HEATER
RELECTOR
MODEL MH12C
CYLINDER - NOT SUPPLIED
WIRE STAND
Figure 1
IGNITER LEAD
SPARKLITE IGNITER
MODEL MH12CS
Operating Instructions and Owner’s ManualMr. Heater | Gas-Fired Infra-Red Portable Heater
3
Figure 2
ODOR FADE WARNING
WARNING
Asphyxiation Hazard
• Do not use this heater for heating human living
quarters.
• Do not use in unventilated areas.
•
be obstructed.
• Proper ventilation air must be provided to support
the combustion air requirements of the heater
being used.
•
manual, heater dataplate, or contact the factory to
determine combustion air ventilation requirements
of the heater.
• Lack of proper ventilation air will lead to improper
combustion.
• Improper combustion can lead to carbon monoxide
poisoning leading to serious injury or death.
Symptom of carbon monoxide poisoning can
include headaches dizziness and difficulty in
breathing.
Always be
FUEL GAS ODOR
LP gas and natural gas have man-made odorants added
specifically for detection of fuel gas leaks.
If a gas leak occurs you should be able to smell the fuel
gas. Since Propane (LP) is heavier than air you should
smell for the gas odor low to the floor. ANY GAS ODOR
IS YOUR SIGNAL TO GO INTO IMMEDIATE ACTION!
• Do not take any action that could ignite the fuel gas. Do
not operate any electrical switches. Do not pull any power
supply or extension cords. Do not light matches or any
other source of flame. Do not use your telephone.
• Get everyone out of the building and away from the area
immediately.
• Close all propane (LP) gas tank or cylinder fuel supply
valves, or the main fuel supply valve located at the meter if
you use natural gas.
• Propane (LP) gas is heavier than air and may settle in low
areas. When you have reason to suspect a propane leak,
keep out of all low areas.
• Use your neighbor’s phone and call your f
area.
• Stay out of the building and away from the area until
declared safe by the firefighters and your fuel gas supplier.
•
check for escaped gas. Have them air out the building and
area before you return. Properly trained service people
must repair any leaks, check for further leakages, and then
relight the appliance for you.
uel gas supplier
-enter the building or
ODOR FADING - NO ODOR DETECTED
• Some people cannot smell well. Some people cannot smell
the odor of the man-made chemical added to propane (LP)
or natural gas. You must determine if you can smell the
odorant in these fuel gases.
• Learn to recognize the odor of propane (LP) gas and
natural gas. Local propane (LP) gas dealers will be more
than happy to give you a scratch and sniff pamphlet. Use it
to become familiar with the fuel gas odor.
• Smoking can decrease your ability to smell. Being around
an odor for a period of time can affect your sensitivity to
that particular odor. Odors present in animal con¯nement
buildings can mask fuel gas odor.
• The odorant in propane (LP) gas and natural gas is
colorless and the intensity of its odor can fade under
some circumstances.
• If there is an underground leak, the movement of gas
through the soil can filter the odorant.
• Propane (LP) gas odor may differ in intensity at different
levels. Since Propane (LP) gas is heavier than air, there may
be more odor at lower levels.
• sensitive to the slightest gas odor. If you
continue to detect any gas odor, no matter how small, treat
it as a serious leak. Immediately go into action as discussed
previously.
ATTENTION - CRITICAL POINTS TO
REMEMBER!
• Propane (LP) gas has a distinctive odor. Learn to recognize
these odors. (Reference Fuel Gas Odor and Odor Fading
sections above.
• Even If you are not property trained in the service and
repair of the heater, ALWAYS be consciously aw
odors of propane (LP) gas and natural gas.
• If you have not been properly trained in repair and service
of propane (LP) gas then do not attempt to light heater,
perform service or repairs, or make any adjustments to the
heater on the propane (LP) gas fuel system.
• A periodic sniff test around the heater or at the heater’s
joints; i.e. hose, connections, etc., is a good safety practice
under any conditions. If you smell even a small amount of
gas, CONTACT YOUR FUEL GAS SUPPLIER IMMEDIATELY.
DO NOT WAIT!
are of the
1. GENERAL INFORMATION
A. The Mr. Heater MH12C and the MH12CS are high pressure
propane appliances and are designed to be connected to a 14.1
or 16.4 ounce disposable propane cylinder. Every unit is tested
during manufacturing and shipped fully assembled except for the
wire stand.
B. These heaters are equipped with an automatic Safety Shutoff
Valve. The gas flow will automatically stop if the heater fails to
operate for any reason.
C. Maximum safety and convenience have been built into the Hi-
Med-Lo-Off Control Valve/Regulator. The following table lists the
approximate BTU’s consumed and the operating hours you can
reasonably expect from bulk propane cylinders.
D. Model MH12CS is equipped with an igniter for convenient heater
lite-off.
Mr. Heater | Gas-Fired Infra-Red Portable Heater Operating Instructions and Owner’s Manual
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Valve Position BTU Input Cylinder 14.1 oz. Cylinder 16.4 oz.
Hi 14,000 1.4 hours 1.6 hours
Med 12,000 1.6 hours 1.8 hours
Lo 8,000 2.3 hours 2.7 hours
Figure 3
should always be turned to “Off” when the heater is not in
use. Allow at least 15 minutes for cooling before handling and
storing. Detach propane cylinder from heater before storing. DO
NOT store propane cylinders near open flame or heat.
K. DO NOT TRANSPORT OR MOVE APPLIANCE WHILE IN
OPERATION OR WHILE HEATER IS ATTACHED. FOLLOW
SHUTDOWN AND STORAGE INSTR
OR MOVE THIS APPLIANCE.
UCTIONS TO TRANSPORT
2. FOR SAFE OPERATION
A. READ INSTRUC TIONS CAREFULLY: Read and adhere to
these instructions. Do not allow anyone who has not read the
instructions to assemble, light, adjust or operate the heater.
WARNING
KEEP THE HEATER OUT OF THE REACH OF CHILDREN
B. PROPANE IS VERY FLAMMABLE: In the event of a leak,
propane will accumulate and the possibility of a fire is present.
Propane gas is scented and its strong odor is readily detectable.
spark in an enclosure when you smell propane gas. Ventilate the
area thoroughly, move the heater outside, find and correct the
source of the leak before attempting to light any appliance. If
you are unsure of these instructions evacuate immediately and
call for help.
C. GAS LEAKAGE: If the leak cannot be corrected, do not tamper
with the heater, follow the shut down instructions and return
the heater to the dealer or address given on last page.
WARNING
DO NOT STORE PROPANE CYLINDERS NEAR AN OPEN
FLAME OR HEAT
D. LEAK DETEC TION: Before each use of the heater check all
fittings and connections with a soap solution to be sure there
are no leaks. NEVER, NEVER USE ANY FLAME FOR LEAK TEST.
E. CONNEC TING HEATER TO PROPANE CYLINDER: Always
connect the heater to the cylinder in the outdoors or in a well
ventilated area. NEVER connect this heater to a cylinder near an
open flame.
F. USE OF HEATER: Always operate the heater with the propane
cylinder in an upright position on a level noncombustible surface.
NEVER place the cylinder on its side when operating the heater.
In cooking position cylinder must be 30 degrees from horizontal.
G. ATTEND HEATER: Do not leave heater unattended while it is in
operation.
H. ALWAYS LIGHT HEATER WITH MATCH or “Sparklite” Igniter.
I. DO NOT TAMPER: Should the heater not perform properly,
such as little or no heat when operating in the “Hi” position, or
for any other reason, DO NOT ATTEMPT TO REPAIR OR TAMPER
with the heater. Any tampering could make the use of the heater
unsafe and dangerous. Return the heater to the dealer or the
address given on last page for repair or replacement.
J. FOR STORAGE: The heater Hi-Med-Lo-Off regulating valve
3. VENTILATION
A. WARNING: This heater is an unvented appliance and
MUST be used ONLY in a well ventilated area. NEVER
attempt to operate the heater inside any vehicle, camper or
enclosure.
B. FOR OUTDOOR USE ONLY. Any combustion process
requires and consumes oxygen, and will produce carbon
monoxide.
C. WARNING: provide ample ventilation. This heater con-
sumes air (oxygen). Do not use this heater in unventilated
structures to avoid endangering your life. Provide additional
ventilation for any additional fuel-burning appliances and
additional occupants.
4. MINIMUM CLEARANCE FROM
COMBUSTIBLE MATERIALS
A. When operating, the heater surfaces are extremely hot. Keep
sleeping bags, clothing, and all combustible materials clear of the
heater by at least the distances shown in figure 4.
B. WARNING: To avoid injury or property damage never allow
clothing, tents or other combustible materials within 30” of the
level when in use. Never operate the heater when sleeping.
C. WARNING: Never direct the heat output of this heater toward
any propane tank within 20 feet.
BTU/HR. RATING
MODEL
NO.
MH12C 14,000 Vertical 18" 30" 30" 30”
and & Horizontal
MH12CS 14,000 Vertical 18" 30" 30" 30"
& Horizontal
Figure 4
GAS
PROPANE
NORMAL
OPERATING
PROCEDURE
CLEARANCES TO COMBUSTIBLES
FROM C.L. OF
HTR. TO FLOOR
SIDES
REAR
CEILING
5. ASSEMBLY PROCEDURE
A. Make sure the regulator knob on the heater is “off” by turning
knob clockwise to the “OFF” position.
B. Carefully screw disposable cylinder hand tight into the inlet
tapping of regulator. Make sure gas cylinder is in upright
position.
C.
Figure 1 and 2).
D. Make sure knurled lock nut is tightened securely – Figure 1.
Operating Instructions and Owner’s ManualMr. Heater | Gas-Fired Infra-Red Portable Heater
5
COOKING POSITIONS
MODEL MH12C
MODEL MH12CS
6. LIGHTING INSTRUCTIONS
A.
connections with a soap solution NEVER USE A MATCH TO
CHECK FOR LEAKS. Should a gas leak occur, do not attempt
to repair or use heater. Return the heater to your dealer or the
address given on last page.
B. Fuel – this heater must be used with propane fuel cylinders as
stated in paragraph 1.4 and 1.5 on page 2.
WARNING
USE HD.5 PROPANE GAS ONLY. DO NOT USE ANY OTHER
TYPE FUEL. SEE YOUR PROPANE DEALER IF YOU HAVE
ANY QUESTIONS REGARDING FUEL.
C. Turn the heater’s “Hi-Med-Lo-Off” regulator knob to “Med”
(counterclockwise.)
D. To light MH12C, place a lit match across the mesh screen where
button on Safety Shutoff Valve. After the heater is lit, continue
to hold valve button in for 30 seconds, then release the button
slowly. CAUTION: DO NOT PUSH IN VALVE BUTTON BEFORE
INSERTING LIT MATCH.
E. To light MH12CS, press “Sparklite” igniter Safety Shutoff
Valve button at the same time. (See Fig. 5a) Prior to pressing
"Sparklite" igniter. After the heater is lit, continue to hold valve
button in for 30 seconds, then release the button slowly.
F. If burner does not light within 30 seconds, turn the heater’s
minutes for gas to dissipate before attempting to relight.
G. NOTE: Should the orifice become clogged as indicated by low
volume of gas when operating on “Hi” with a full cylinder, or
should the heater fail to operate properly for any reason, return
the heater to the dealer or the address given on last page
for repair or replacement. DO NOT ATTEMPT TO REPAIR OR
TAMPER WITH HEATER.
H. Adjust heat output by turning knob to desired position.
7. SHUTDOWN AND STORAGE
INSTRUCTIONS
A. The valve should ALWAYS be completely turned “OFF” when the
heater is not in use.
B. When shutting off the heater, turn the regulator knob on the
heater to “OFF” (clockwise). (See Figure 5 and 5a).
C. CAUTION: After turning unit off, heater will remain extremely
hot. Allow at least 15 minutes for cooling before handling
and storing. Detach heater from cylinder before handling and
storage.
D. HEATER STORAGE: Always remove the propane cylinder from
the heater when not in use. Always store propane cylinders in
a cool, well ventilated place away from any flame or heat and
in a location not used for habitation. DO NOT STORE PROPANE
CYLINDER WITHIN 60 FT. OF OPEN FLAME OR HEAT.
E. See Figure 6 for spare parts list.
Figure 5
MODEL MH12C
Figure 5a
MODEL MH12CS
Mr. Heater | Gas-Fired Infra-Red Portable Heater Operating Instructions and Owner’s Manual
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Mr. Heater • Gas-Fired Infra-Red Portable Heater • Model #MH12C and #MH12CS
NOTE:
WHEN LIGHTING BURNER
WITH A MATCH OR
TAPER, LIGHT AT SCREEN.
(NOT AT ORIFICE)
Figure 6
REPLACEMENT PARTS LIST FOR HEATER MODELS MH12C AND MH12CS
REF.# ITEM# DESCRIPTION
1 F273116
2 F273117 Thermocouple Lead – 12” Long
3 F273164 Screen Assembly
4 73320 Replacement Regulator Assembly Complete
5 73340P
6 F273607 Replacement Regulator Hi-Med-Lo-Off
7 75102 Wire Face Guard
8 75113 Knurled Lock Nut
9 -10 75318P Square Metal Stand (MH12C)
11 75318PS Square Metal Stand (MH12CS)
12 75784
13 73235 “Sparklite” Igniter Assembly (MH12CS)
14 73233 Electrode Assembly (MH12CS)
73340PS
Plenum/Reflector Assembly with Clip
Plenum/Reflector Assembly with Clip (Sparklite)
Figure 7
ALL WARRANTY CLAIMS REQUIRE PROOF OF PURCHASE
Operating Instructions and Owner’s ManualMr. Heater | Gas-Fired Infra-Red Portable Heater
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OPERATING INSTRUCTIONS
Model #
MH12C
AND OWNER’S MANUAL
MH12CS
WARNING:
USE ONLY MANUFACTURER’S REPLACEMENT PARTS. USE OF ANY OTHER PARTS
COULD CAUSE INJURY OR DEATH. REPLACEMENT PARTS ARE ONLY AVAILABLE
DIRECT FROM THE FACTORY AND MUST BE INSTALLED BY A QUALIFIED SERVICE
AGENCY.
PARTS ORDERING INFORMATION:
PURCHASING: Accessories may be purchased at any Mr. Heater local dealer or
direct from the factory
FOR INFORMATION REGARDING SERVICE
Please call Toll-Free 800-251-0001
www.mrheater.com
Please include the model number, date of purchase, and description of problem in
all communication.
LIMITED WARRANTY
Mr Heater, Inc. warrants its heaters and accessories to be free from defects in material and workmanship for a period of 1 year from date of purchase. Mr Heater, Inc.
will repair or replace this product free of charge if it has been proven to be defective
within the 1-year period, and is returned at customer expense with proof of purchase to Mr Heater, Inc. within the warranty period.
Mr. Heater Inc. reserves the right to make changes at any time, without notice or
obligation, in colors, specifications, accessories, materials and models.
ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000
Mr. Heater and Portable Buddy are registered trademarks of Enerco Group, Inc.
© 2008, Enerco/Mr. Heater. All rights reserved
Mr. Heater | Gas-Fired Infra-Red Portable Heater Operating Instructions and Owner’s Manual
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