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© 2017, Pinnacle Climate Technologies, Inc. 

Kerosene Radiant Heater User’s Manual 

NEVER LEAVE HEATER UNATTENDED WHILE BURNING 

OR WHILE CONNECTED TO A POWER SOURCE

1

MASSACHUSETTS RESIDENTS: 

Massachusetts state law prohibits the use of this heater 

in any building which is used in whole or in part for human habitation. Use of this heating 

device in Massachusetts requires local fire department permit (M.G.L.C. 148, Section 10A).

NEW YORK CITY RESIDENTS: 

The New York City Fire Code prohibits the storage, 

handling and use of kerosene fueled heaters for space heating. Any person violating that 

provision may be punished by a fine up to $10,000 and a term of imprisonment of up to 6 

months.

 

Look for this icon throughout the manual for helpful tips on how to assemble, use 

and clean your OFR heater.

THE INSTALLATION OF THIS HEATER SHALL COMPLY WITH THE REGULATIONS OF 

THE AUTHORITIES HAVING JURISDICTION.

  

CALIFORNIA RESIDENTS: 

This product contains chemicals, 

including lead, known to the State of California to cause birth 

defects or other reproductive harm. 

Wash hands after handling.

DO NOT START THE HEATER WHEN EXCESS OIL HAS 

ACCUMULATED.

DO NOT START THE HEATER WHEN THE CHAMBER IS HOT.

 

WARNING

WARNING

WARNING

The products described in this manual are 

kerosene direct-fired, forced air heaters. Kerosene 

forced air heaters are primarily intended for use for 

temporary heating of buildings under construction, 

alteration or repair. Direct-fired means that all of 

the combustion products of the heater enter the 

heated space. This appliance is rated at 98% 

combustion efficiency, but does produce small 

amounts of carbon monoxide.

Carbon monoxide is toxic. Humans can tolerate 

only small amounts of carbon monoxide and so 

precautions should be taken to provide proper 

ventilation. Failure to provide proper ventilation 

in accordance with the instructions in this manual 

can result in death.
People with breathing problems should consult a 

physician before using this heater. 
Early signs of carbon monoxide poisoning 

resemble the flu. Symptoms of improper 

ventilation / carbon monoxide poisoning are:

Headache • Dizziness • Nausea 

• 

Dry Mouth 

Sore Throat 

 Burning of Nose and Eyes

If you experience any of these symptoms: 

GET FRESH AIR AT ONCE! 

Have your heater 

serviced and check for proper ventilation. Some 

people are more affected by carbon monoxide 

than others. These include: pregnant women, 

those with heart or lung problems, anemia or 

those under the influence of alcohol or at high 

altitudes. 

FOR OUTDOOR USE. INDOOR USE 

PERMITTED ONLY FOR: The temporary 

heating of adequately ventilated buildings or 

structures under construction, alteration or 

repair! Provide at least a three square foot  

(2,800 sq cm) opening of outside air for every 

100,000 Btu/Hr (29 kW) heater rating. Refer to 

“Ventilation” on page 5 for further instructions.

RISK OF INDOOR 

AIR POLLUTION!

WARNING

CARBON 

MONOXIDE 

POISONING MAY 

LEAD TO DEATH!

DANGER

Summary of Contents for MASTER MH-125-OFR-A

Page 1: ...Safety Information FIRE BURN INHALATION AND EXPLOSION HAZARD Keep combustibles such as building materials paper or cardboard a safe distance away from the heater as recommended by these instruc tions...

Page 2: ...for temporary heating of buildings under construction alteration or repair Direct fired means that all of the combustion products of the heater enter the heated space This appliance is rated at 98 com...

Page 3: ...use with an external fuel tank Keep all combustible materials away from this heater Minimum Clearance From Combustibles 70 SS 125 OFR Top 4 ft 125 cm 6 ft 185 cm Sides 4 ft 125 cm 6 ft 185 cm Front 8...

Page 4: ...EAVE HEATER UNATTENDED WHILE BURNING OR WHILE CONNECTED TO A POWER SOURCE 3 Features FUEL PRESSURE GAUGE BEHIND REMOVABLE COVER 70 SS 125 OFR Top Safety Guard Radiant Cone Front Safety Guard Radiant V...

Page 5: ...iver Figure 1 Figure 2 Attach the handle while still in the box for easier unpacking see Figure 2 Carry Handle 1 Black Screws 2 Step 1 Remove existing screws from shell ring on either side of heater s...

Page 6: ...attach wheels washers and nuts see Figure 6 2 Place main structure on wheel frame and fasten with long screws provided see Figure 7 3 Attach safety guard to front of heater with screws provided see F...

Page 7: ...in direct sunlight or near a source of heat NEVER use Kerosene that has been stored from one season to the next Kerosene deteriorates over time OLD Kerosene WILL NOT BURN PROPERLY IN THIS HEATER NOTE...

Page 8: ...heater fails to ignite check this fuse first and replace if necessary Also check the power source to be sure the proper voltage is being provided to the heater 1 Complete steps 1 3 above 2 Push the p...

Page 9: ...ush with water use fresh Kerosene only SPARK PLUG Clean and re gap every 600 hours of operation or replace as needed After removing the Spark Plug clean the terminals with a wire brush Re gap the term...

Page 10: ...n clean Kerosene or diesel to help loosen any particles see Figure 14a and 14b PHOTOCELL The photocell should be cleaned at least once per heating season or more depending on conditions Use a cotton s...

Page 11: ...Spark Plug 3 Clean replace Fuel Filter 4 Clean replace Nozzle 5 Rinse out fuel tank with clean fresh Kerosene diesel 6 Inspect all electrical connections See Wiring Diagrams Page 11 7 Re attach Transf...

Page 12: ...imate Technologies Inc Kerosene Radiant Heater User s Manual NEVER LEAVE HEATER UNATTENDED WHILE BURNING OR WHILE CONNECTED TO A POWER SOURCE 125 OFR 11 Wiring Diagram AC 120V 60Hz AC 250V 3 15A ELECT...

Page 13: ...es Inc Kerosene Radiant Heater User s Manual NEVER LEAVE HEATER UNATTENDED WHILE BURNING OR WHILE CONNECTED TO A POWER SOURCE Exploded View 12 25 23 24 9 21 22 20 19 26 10 7 28 6 4 3 1 2 27 8 12 13 29...

Page 14: ...0 9 Ignitor 75 025 0120 10 Main PCB Assembly 75 025 0400 11 Tip Over Sensor 75 051 0200 12 Cooling Motor Assembly 75 047 0250 13 Cooling Fan 75 047 0200 14 Handle 75 001 0060 15 Temperature Limit Swit...

Page 15: ...Kerosene Radiant Heater User s Manual NEVER LEAVE HEATER UNATTENDED WHILE BURNING OR WHILE CONNECTED TO A POWER SOURCE 1 2 4 3 5 6 7 8 9 10 11 12 13 14 15 16 17 18 24 20 22 21 30 23 26 19 34 27 29 42...

Page 16: ...p 72 027 0100 11 Main PCB and Fuse 72 025 0450 12 Tip Over Sensor 75 051 0200 13 Power Cord 72 032 0150 14 Power Switch 72 012 0120 15 Back Cover 72 013 0110 16 Panel sub PCB 72 014 0100 17 Blower Mot...

Page 17: ...If Pinnacle Climate Technnologies Inc finds the item to be in normal operating condition or not defective the item will be returned freight collect This Limited Warranty is in lieu of all other expres...

Page 18: ...1 Industrial Blvd 101 Sauk Rapids MN 56379 USA Toll Free 800 779 3267 Fax 320 251 2922 Web www masterindustrialproducts com Email info pinnacleclimate com 2017 Pinnacle Climate Technologies Inc...

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