Mr. Heater MH26TC Owner's Manual
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.
MH26TC
Model #
04/08 Rev. A 73675ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 800-251-0001
Gas-Fired Infra-Red
Portable Heater
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.
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
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light appliance.
• Extinguish any open ame.
• Shut off gas to appliance.
— Service must be performed by a qualified service agency.
— DO NOT LEAVE HEATER UNATTENDED OR IN OPERATION WHILE SLEEPING
This is an unvented gas-red portable heater. It uses air (oxygen) from the area in which it is used.
Adequate combustion and ventilation air must be provided. Refer to page 4.
CYLINDER NOT INCLUDED
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Mr. Heater | MH26TC Gas-Fired Infra-Red Portable Heater Operating Instructions and Owner’s Manual
CONTENTS
1. General Information ......................................................3
2. For Safe Operation ........................................................3
3. Ventilation ....................................................................4
4. Minimum Clearance From Combustible Materials .......... 4
5. Assembly Procedure ...................................................... 4
6. Lighting Instructions ..................................................... 5
7. Shutdown And Storage Instructions .............................. 6
8. Cleaning ....................................................................... 6
9. Exploded View Parts Diagram ....................................... 7
Warranty Information ........................................................ 8
Instructions for Ordering Parts .......................................... 8
WARNING:
YOUR SAFETY IS IMPORTANT TO YOU AND TO OTH-
ERS, 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 FOL-
LOW INSTRUCTIONS SHOULD USE OR SERVICE THIS
HEATER.
IF YOU NEED ASSISTANCE OR HEATER INFORMATION
SUCH AS AN INSTRUCTION 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.
The heater is designed and approved for use as a construction heater in accordance with Standard ANSI
Z83.7 CGA2.14. CHECK WITH YOUR LOCAL FIRE SAFETY
AUTHORITY IF YOU HAVE QUESTIONS ABOUT APPLICATIONS.
Other standards govern the use of fuel gases and heat
producing products in specific applications. Your local
authority can advise you about these.
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.
THE STATE OF CALIFORNIA REQUIRES THE
FOLLOWING WARNING:
WARNING:
Combustion by-products produced when using this product contain carbon monoxide, a chemical known to the
State of California to cause cancer and birth defects (or
other reproductive harm).
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Operating Instructions and Owner’s ManualMr. Heater | MH 26TC Gas-Fired Infra-Red Portable Heater
1. GENERAL INFORMATION
A. The Mr. Heater MH26TC is a high pressure propane
appliance and is designed to be connected to a bulk
propane cylinder. Every unit is tested during manufacturing and shipped fully assembled except as noted.
B. Intended use of this heater is primarily the temporary
heating of buildings under construction, alteration or
repair.
C. Installation of heater must conform with local codes
or in absence of local codes, with the Standard for the
Storage and Handling of Liquefied Petroleum Gases,
ANSI / NFPA 58 latest edition. Natural Gas and Propane
Installation Code, CSA B149.1;
D. This heater is equipped with two automatic Safety
Shutoff Valves. The gas flow will automatically stop to a
heater burner if the heater burner fails to operate.
E. Maximum safety and convenience have been built into
the Hi-Med-Lo Control Valve/Regulator. The following
table lists the approximate BTU’s consumed and the
operating hours you can reasonably expect from bulk
propane cylinders.
Burners Valve BTU Cylinder
Operating Position Input 20 lb.
1 Hi 13,000 32 hours
1 Med 11,500 37 hours
1 Lo 10,000 42 hours
2 Hi 26,000 16 hours
2 Med 23,000 18 hours
2 Lo 20,000 21 hours
FIGURE 1.
F. 12 P.S.I. minimum inlet gas supply pressure for the pur-
pose of input adjustment.
G. Maximum inlet supply pressure is 120 P.S.I.
H. Heater area to be kept clear and free from combustible
materials, gasoline, and other flammable vapors and
liquids.
I. Flow of combustion and ventilation air must not be
obstructed.
J. The heater should be inspected before each use and at
least annually by a qualified service person.
K. Hose assembly shall be visually inspected prior to each
use of heater. If it is evident there is excessive abrasion
or wear, or the hose is cut, it must be replaced prior to
the heater being put into operation. Replacement hose
assembly shall be Mr. Heater hose assembly as listed in
the parts list.
L. When heater is not in use, turn off the LP gas supply at
the LP gas cylinder.
M. See your local dealer or contact Mr. Heater Corp. for re-
placement parts or information pertaining to this heater.
Generic part replacement may also void your warranty.
N. The minimum ambient temperature rating for this heater
is 20°F.
2. FOR SAFE OPERATION
A. READ INSTRUCTIONS 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. Never strike a match or bring any ame or
create an electric spark in an enclosure when you smell pro-
pane gas. Ventilate the area thoroughly, move the heater
outside, nd and correct the source of the leak before at-
tempting 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
front page.
WARNING:
Do not use this heater on bulk tanks of greater capacity
than 20 pounds LPG (50 pounds water capacity).
D. LEAK DETECTION: Before each use of the heater check
all fittings and connections with a soap solution to be sure
there are no leaks. Be sure the POL tting is wrench (7/8”)
tightened into the on-off valve on the propane cylinder.
NEVER, NEVER USE ANY FLAME FOR LEAK TEST.
E. CONNECTING HEATER TO PROPANE CYLINDER: Always
connect the heater to the bulk cylinder in the outdoors
or in a well ventilated area. Use a 7/8” open end wrench.
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 non-com-
bustible surface. NEVER place the cylinder on its side when
operating the heater.
G. ATTEND HEATER: Do not leave heater unattended while it
is in operation.
H. ALWAYS USE A MATCH TO LIGHT HEATER: NEVER at-
tempt to light the heater with a spark lighter.
I. DO NOT TAMPER: Should the heater not perform prop-
erly, 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 front page
for repair or replacement.
J. FOR STORAGE: The heater Hi-Med-Lo-Off regulating valve
should always be turned to “off” when the heater is not in
use. Allow at least 15 minutes for cooling before handling
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Mr. Heater | MH26TC Gas-Fired Infra-Red Portable Heater Operating Instructions and Owner’s Manual
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 INSTRUCTIONS TO TRANSPORT OR MOVE THIS APPLIANCE.
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. Any combustion process requires and consumes oxygen,
and may produce carbon monoxide. THIS HEATER MUST
BE USED WITH ADEQUATE VENTILATION. Do not use
in a tightly enclosed area. Two openings directly to the
outdoors MUST be provided. One HIGH and one LOW,
preferably on opposite sides of the enclosure. EACH
OPENING SHALL HAVE A MINIMUM FREE AREA OF 36
SQUARE INCHES (6”x6”). Structures of tight construc-
tion or tents using fire retardant materials will require
larger openings. If any additional fuel burning appliances are operated, ALWAYS provide additional ventilation.
Increase the area of each opening by at least 2 square
inches for each 1,000 BTU’s per hour of additional input
rating.
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 following
distances (See Figure 2):
B. WARNING Provide ample ventilation. This heater
consumes air (oxygen). Do not use this heater in unven-
tilated structures to avoid endangering your life. Provide
additional ventilation to any additional fuel-burning ap-
pliances and additional occupants.
C. WARNING To avoid injury or property damage never
allow clothing, tents, or other combustible material
within 36” of the heater. This heater must be located at
least 32” about the oor level when in use. Never oper-
ate the heater when sleeping.
D. WARNING Never direct the heat output of this heater
toward any propane tank within 20 feet.
BTU /HR. Rating Normal Clearances to Combustibles
Model No. Gas Operating From Center Line of
Propane Procedure HTR. To Floor Sides Rear Ceiling
MH26TC 26,000 Vertical 32” 36” 36” 36”
FIGURE 2
5. ASSEMBLY PROCEDURE
A. Make sure the regulator knob on the heater is “off” by
turning knob clockwise to the “OFF” position.
B. See Hook-Up Information – Fig. 3.
HOOK-UP INFORMATION
FIGURE 3
A. Heater Model MH26TC is packaged completely assem-
bled except for collar mounting bracket and tankfoot;
propane cylinders (tanks) are not included with Model
MH26TC.
B. Remove heater collar mounting bracket and tank stabi-
lizer from carton.
C. Place the slots of the black collar mounting bracket into
assembly onto the collar of the bulk tank (see Fig. 3).
CAUTION: BE SURE THE LOCKING HANDLE ON THE
COLLAR MOUNTING BRACKET ASSEMBLY IS OUTSIDE
THE COLLAR OF THE BULK TANK. Tighten the locking
knob against collar of tank. Wrench tighten hex nut
against collar of tank.
D. Be sure heater is positioned away from tank (See Fig 3
and 4).
Heater Stock
NO. F273625
NOTE: Twenty pound (20 lb.) L P cylinder (not included) used with Mr.
Heater Model MH26TC must be equipped with Tank Stabilizer – Mr. Heater
Stock No. 73169 – to keep cylinder vertical and tip resistant.
Reflector
Hose Assembly
Tank Stabilizer
Tighten
Regulator Knob
Collar Mounting
Bracket Assembly
Locking Knob
Tank Valve
LP Cylinder
(Cylinder Not
Included)
P.O.L. Nut
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Operating Instructions and Owner’s ManualMr. Heater | MH 26TC Gas-Fired Infra-Red Portable Heater
E. Make sure tank valve is in “OFF” position (clockwise).
Grasp cylinder collar with two hands and push bottom
of cylinder into tank stabilizer. (See Fig. 5).
F. Use only LP gas cylinders constructed for use with
propane only (HD-5) and marked in accordance with the
specifications for LP gas cylinders of the U.S. Department of Transportation (DOT).
G. This heater must be used only with a vapor withdrawal
LP gas bulk tank equipped with a standard POL valve
– do not use this heater on bulk tanks greater than 20
pounds LPG capacity (50 pounds water capacity).
H. Make sure regulator knob is in “OFF” position by turning
knob clockwise to off.
I. Carefully screw POL nut directly in bulk tank valve nger
tight, turning counterclockwise; then with a 7/8” open
end wrench, tighten the POL fitting, hard.
J. Always connect the heater to bulk tank in the outdoors
or in a well ventilated area. NEVER connect heater to
bulk tank near an open ame.
WARNING
K. Never touch heater while in operation to avoid injury.
Move heater by grasping the propane cylinder carefully.
L. Read every page in this instruction manual before light-
ing heater.
WARNING:
STOP – LOOK – READ – UNDERSTAND these warn-
ing instructions to avoid serious injury, fire, asphyxiation, death or other life threatening conditions.
WARNING:
DO NOT LEAVE HEATER UNATTENDED OR IN OP-
ERATION WHILE SLEEPING
NOTE: DO NOT USE MATCHES FOR LEAK TESTING.
USE ONLY SOAP SOLUTION.
6. LIGHTING INSTRUCTIONS
A. Before attempting to light the heater, check all ttings
and 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 front page.
B. Fuel – This heater must be used only with a vapor with-
drawal LP gas bulk cylinder. THE BULK TANK MUST BE
EQUIPPED WITH A STANDARD POL VALVE.
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” (counter-clockwise).
D. To light heater, place a lit match across the mesh screen
where you see “light here” on reector (See Fig. 3 and
Fig. 4). THEN push in valve button on Safety Shutoff
Valve. After the heater is lit, continue to hold the valve
button in for 30 seconds, then release the button
slowly. CAUTION: DO NOT PUSH IN VALVE BUTTON BEFORE INSERTING LIT MATCH. NEVER use a spark lighter
to light heater. Repeat step “D” for each burner.
E. If burner does not light within 30 seconds, turn the
heater’s regulator knob to “off” (clockwise) and allow at
least five minutes for gas to dissipate before attempting
to relight.
F. NOTE: Should the orice 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, please call Mr. Heater technical services at
1-800-251-0001. DO NOT ATTEMPT TO REPAIR OR TAM-
PER WITH THE HEATER, PRIOR TO TALKING TO TECHNICAL SERVICES.
G. Adjust heat output by turning knob to desired position.
H. COOKING: DO NOT USE THIS HEATER FOR COOKING.
I. After heater shutdown, a five minute complete shutoff
period is required before heater is relighted.
FIGURE 4
7. SHUTDOWN AND STORAGE
INSTRUCTIONS
A. The bulk propane tank “On-Off” 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 Fig. 3)
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 bulk tank
before handling and storage. REMEMBER – POL tting
is a left-hand thread.
D. HEATER STORAGE: Always remove heater from the
propane cylinder when heater is to be stored indoors.
Carefully remove POL Nut from propane cylinder after
turning off LP gas supply at the LP gas cylinder. Loosen
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