Mr. Heater MH9B GR Operating Instruction
Operational Instructions Only - No Parts List
OPERATING INSTRUCTIONS
Model #
MH9B GR
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.
PORTABLE PROPANE HEATER FOR
RECREATIONAL AND COMMERCIAL USE
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.
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 3.
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.
04/08 73432TGR Rev. DENERCO GROUP INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000
WARNING:
Every time hose or tank is connected to unit, connection
must be checked for leaks in one or more ways: Apply
soapy water to connection, look for bubbles, listen for
hiss of escaping gas, feel for extreme cold, smell for rot-
ten egg odor. Do not use if leaking!
WARNING:
Any changes to this heater or its controls can be danger-
ous.
WARNING:
Early signs of carbon monoxide poisoning resemble the
flu, with headache, dizziness and/or nausea. If you have
these signs, heater may not be working properly. Get
fresh air at once! Have heater serviced.
WARNING:
If the recreational or commercial enclosure does not
have a window or roof vent, DO NOT USE THIS HEATER
INSIDE.
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).
CONTENTS
General Safety Instructions ............................................... 3
General Information .......................................................... 3
Operating with Disposable Propane Cylinders
Operating With Hose Connected to Remote Cylinder
Maintenance.....................................................................5
Troubleshooting ................................................................ 6
Parts List
Parts Ordering Information ............................................... 8
Service Information
........................................................................... 6
........................................................... 8
...................4
........ 4
SPECIFICATIONS
MODEL NO. .................................................MH9B GR
GAS TYPE ......................................................PROPANE
INPUT BTU/HR. .......................................4,000 / 9,000
CLEARANCE TO COMBUSTIBLES
TOP ....................................................................... 30”
FRONT ....................................................................24”
SIDES ...................................................................... 6”
REAR ....................................................................... 0”
Mr. Heater | Portable Buddy Operating Instructions and Owner’s Manual
2
GENERAL SAFETY INSTRUCTIONS
THIS IS A HEATING APPLIANCE. DO NOT OPERATE
THIS APPLIANCE WITHOUT THE FRONT WIRE GUARD
INSTALLED
• Due to high temperatures, the appliance should be
located out of traffic and away from combustible materials.
• Children and adults should be alerted to the hazard of
high surface temperatures and should stay away to avoid
burns or clothing ignition.
• Young children should be carefully supervised when they
are near the appliance.
• Do not place clothing or other flammable material on or
near the appliance.
• Do not operate heater in any moving vehicle.
• This heater can only be used in a recreational or com-
mercial enclosure with a window or roof vent. It may
also be used outdoors.
• This heater requires a vent area of 9 square inches (ex-
ample 3” x 3” opening) minimum for adequate ventila-
tion during operation. Do not use other fuel burning
appliances inside.
• GAS PRESSURE AT HEATER IS REGULATED AND FIXED
AT 11” W.C. WHEN USING A REMOTE HOSE CONNECTION DO NOT REGULATE OR REDUCE PROPANE TANK
SUPPLY PRESSURE TO HEATER!
• REGULATOR IN HEATER MUST ALWAYS BE IN PLACE
DURING OPERATION.
• Any safety screen or guard removed for servicing the ap-
pliance must be replaced prior to operating the heater.
• The appliance should be inspected before each use.
Frequent cleaning may be required. The control compartments, burner and circulating air passageways of
the appliance must be kept clean, see MAINTENANCE.
• DO NOT use this heater if any part has been under
water. Immediately call a qualified service technician to
inspect the heater and to replace any part of the control
system and any gas control, which has been under water.
• When used without adequate combustion and ventila-
tion air, this heater may give off excessive CARBON
MONOXIDE, an odorless, poisonous gas.
• Some people - pregnant women, persons with heart
or lung disease, anemia, those under the influence of
alcohol, those at high altitudes - are more affected by
carbon monoxide than others.
• When heater is placed on the ground, make sure the
ground is level and keep any objects at least 24 inches
from the front of the heater. THIS HEATER IS EQUIPPED
WITH A TIP OVER SWITCH THAT WILL SHUT THE HEATER OFF IF THE HEATER TIPS OVER HOWEVER, DO NOT
LEAVE HEATER UNATTENDED OR WHERE CHILDREN
MAY CAUSE THE HEATER TO TIP OVER. NEVER OPERATE
THE HEATER WHILE SLEEPING!
GENERAL INFORMATION:
• This heater is safe for indoor use in small recreational
enclosures, having means for providing combustion air
and ventilation, such as enclosed porches, cabins, fishing
huts, trailers, tent trailers, tents, truck caps and vans.
It may be used for emergency indoor heating when
connected to a disposable 1-lb. propane cylinder and
for indoor use in commercial enclosures, having means
for providing combustion air and ventilation, such as
construction trailers or temporary work enclosures.
Note: The heater can be used outdoors, but may experi-
ence nuisance shutoffs due to certain wind conditions.
• When the heater is cold or at room temperature, it will
take a few minutes for the burner tile to turn bright orange. This is normal and the heater is working properly.
If burner tile is visibly flaming, turn heater off and call a
qualified service technician.
• When the unit is lit, there should be about a quarter
inch (1/4”) border around the tile that will not turn
bright orange. This is normal.
• When operating the heater for the first time, the top
area of the reflector may discolor. This is also normal
and is no reason for concern.
• When operating the heater at altitudes over 7,000 FT.
above sea level, the unit may not burn as bright as in
lower altitudes. This is normal. At higher altitudes, the
heater may shut-off. If this happens, provide fresh air,
wait 5 minutes and re-light. Due to local atmospheric
conditions heater may not re-light.
• Operating time will vary depending on the heater set-
ting and the supply cylinder size. 3 to 6 hours on a 1 lb.
cylinder. 48 to 110 hours on a 20 lb. cylinder (based on
“HI” and “LO” settings).
• When moving heater when lit or bumping heater setting
it down, tip over switch may shut off heater. If this happens, re-light.
• Due to natural operation of small tanks, condensation
may build up on tank and drip on surface under heater.
Operating Instructions and Owner’s ManualMr. Heater | Portable Buddy
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