Model #
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.
MH75KT
MH125KT
MH175KT
KEROSENE
FORCED-AIR HEATER
WARNING:
— Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance.
— Service must be performed by a qualified service agency.
This is an unvented 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.
05/03 Revision L1 #70276MR. 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:
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
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
WARNINGS ................................................................................. 2
HEATER SPECIFICATIONS ............................................................ 3
OPERATING PRECAUTIONS ......................................................... 3
SAFETY PRECAUTIONS ................................................................ 3
OPERATING INSTRUCTIONS ........................................................ 4
MAINTENANCE, STORAGE AND SERVICE ................................... 5
WIRING DIAGRAM...................................................................... 6
PARTS LIST .................................................................................. 6
EXPLODED VIEW......................................................................... 7
WARRANTY ................................................................................ 8
INSTRUCTIONS FOR ORDERING PARTS ....................................... 8
Mr. Heater | Kerosene Forced Air Heater Operating Instructions and Owner’s Manual
2
SPECIFICATIONS
Type of Gas: .................................For use with Kerosene or #1 Fuel Oil ONLY on ALL models
Model: ........................................MH75KT ......................................... MH125KT .....................................MH175KT
BTU Rating: .................................. 75,000 BTU/hr ................................. 125,000 BTU/hr .............................175,000 BTU/hr
Electrical Input: ............................115V, 60HZ, 4a ................................ 115V, 60HZ, 5.5a ...........................115V, 60HZ, 5.5a
Min. Operating Voltage: .............. 110V ................................................ 110V .............................................. 110V
Ignition: .......................................Direct Spark, continuous ................. Direct Spark, continuous ............... Direct Spark, continuous
Spark Generator: .........................Ignitor 7000V. sec. 10ma ................. ignitor 7000V. ............................... ignitor 7000V 1.0ma
Primary Flame Safety: ..................Solid State Control .......................... Solid State Control ........................Solid State Control
Fuel Tank Capacity: ......................6 gallons ......................................... 14 gallons......................................14 gallons
Fuel Consumption: ....................... .56 gal/hr ........................................ .93 gal/hr ...................................... 1.3 gal/hr
Certification: ................................UL .................................................... UL .................................................UL
OPERATING PRECAUTIONS
This is a kerosene, direct-fired, forced air heater. It's intended use
is primarily temporary heating of buildings under construction,
alteration or repair.
Direct-Fired means that all of the combustion products enter the
heated space. Even though this heater operates very close to 100
percent combustion efficiency, it still produces small amounts of
carbon monoxide. Carbon monoxide (called CO) is toxic. We can
tolerate small amounts but not a lot. CO can build up in a heated
space and failure to provide adequate ventilation could result in
death. The symptoms of inadequate ventilation are:
• headache
• dizziness
• burning eyes and nose
• nausea
• dry mouth or sore throat
So, be sure to follow advice about ventilation in these operating
instructions.
Forced Air means that a blower or fan pushes the air through
the heater. Proper combustion depends upon this air flow;
therefore, the heater must not be revised, modified or operated
with parts removed or missing. Likewise, safety systems must not
be circumvented or modified in order to operate the heater.
When the heater is to be operated in the presence of other
people the user is responsible for properly acquainting those
present with the safety precautions and instructions, and of the
hazards involved.
SAFETY PRECAUTIONS
1. Check the heater thoroughly for damage. DO NOT operate a
damaged heater.
2. DO NOT modify the heater or operate a heater which has
been modified from its original condition.
3. Use only Kerosene or #1 fuel oil. Never use gasoline,
naphtha, paint thinner, alcohol or other fuels of any kind.
4. For indoor use only. Use only in well ventilated areas.
Provide at least 2 sq. ft. of opening near the floor and
2 sq.ft. of opening near the ceiling. (Also see "Operating
Precautions").
5. Install the heater such that it is not directly exposed to
water spray, rain and/or dripping water.
6. Maintain minimum clearance from normal combustible
material (like paper) at least 8 ft. from the heater outlet and
3 ft. from the top, sides and inlet. Locate 10 ft. from canvas
or plastic coverings and secure them to prevent flapping or
movement.
7. Due to the high surface and exhaust temperatures, adults
and children must observe clearances to avoid burns or
clothing ignition.
8. Never use in areas normally for habitation and/or where
children may be present.
9. Operate only on a stable, level surface.
10. Do not use with duct work. Do not restrict inlet or exit.
11. Use only the electrical power specified. The electrical
connection and grounding must comply with National
Electrical Code - ANSI/NFPA 70 (USA) and CSA C22.1
Canadian Electrical Code, Part 1 (Canada).
12. Use only a properly grounded 3-prong receptacle or
extension cord.
13. Do not move, handle or service while hot or burning.
14. Use only in accordance with local codes and federal
ordinances.
Operating Instructions and Owner’s ManualMr. Heater |Kerosene Forced Air Heater
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