Starting Serial Number: SKu-09001001

OpERATING INSTRuCTIONS

AND OWNER’S MANuAl

Model #

MH50KR, MH75KTR,

MH125KTR, MH175KTR,

MH210KTR

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.

KEROSENE

FORCED-AIR HEATER

WARNING: 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.

— 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.

MR. HEATER, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000

UL-733, &CSA/CAN3-B140.9.3

03/09 70202 Rev. A

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 MONOX-

IDE 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 EN-

CLOSED AREAS CAN PRODUCE DEADLY CARBON MON-

OXIDE

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 UN-

KNOWN 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).

WARNING:

• DO NOT USE GASOLINE, NAPHTHA OR VOLATILE

FUELS.

• STOP HEATER BEFORE ADDING FUELS.

• ALWAYS FILL OUTDOORS AWAY FROM OPEN FLAME

• DO NOT USE EXTERNAL FUEL SOURCE.

• DO NOT OPERATE HEATER WHERE FLAMMABLE

LIQUIDS OR VAPORS MAY BE PRESENT.

• DO NOT START HEATER WHEN CHAMBER IS HOT

• DO NOT START HEATER WHEN EXCESS FUEL HAS

ACCUMULATED IN THE CHAMBER.

• DO NOT PLACE COOKING UTENSILS ON TOP OF

THE HEATER.

• PLUG ELECTRICAL CORD INTO A PROPERLY GROUN -

DED THREE-PRONG RECEPTACLE.

CONTENTS

WARNINGS ................................................................................. 2

HEATER SPECIFICATIONS ............................................................. 3

OPERATING PRECAUTIONS .......................................................... 3

SAFETY PRECAUTIONS ................................................................ 3

OPERATING INSTRUCTIONS ........................................................ 3

MAINTENANCE, STORAGE AND SERVICE ................................... 4

TROUBLE SHOOTING .................................................................. 6

WIRING DIAGRAM ...................................................................... 7

PARTS LIST .................................................................................. 8

EXPLODED VIEW ......................................................................... 9

WARRANTY ...............................................................................10

INSTRUCTIONS FOR ORDERING PARTS .......................................10

MH50KR & MH75KTR WARNING:

Not suitable for use on wood floors or other combustible materials. When used the heater should rest on a suitable insulating material at least 1 inch thick and extending 3 feet or more beyond the heater in all directions.

Mr. Heater, Inc. | Kerosene Forced Air Heater

2

Operating Instructions and Owner’s Manual

SPECIFICATIONS

CAuTION: CSA certified for use with only No. 1-K kerosene fuel.

Model

Burn Rate:

Fuel Rate:

50KR 75KTR

50,000 Btu/hr (14.7 kW) 75,000 Btu/hr (22 kW)

0.37 gal/hr (1.4 L/hr) 0.55 gal/hr (2.1 L/hr)

Electrical Input:

Line Protection:

115V, 60Hz, 3.5a

10 amps

Min. Operating Voltage: 110V

Pressure Setting: 3.5 psig (24 kPa)

Max. Outlet Temperature: 1450 o F (787 o C)

115V, 60Hz, 4a

10 amps

110V

4.2 psig (29 kPa)

1450 o F (787 o C)

125KTR 175KTR

125,000 Btu/hr (37 kW) 175,000 Btu/hr (51 kW)

0.96 gal./hr (3.5 L/hr)

115V, 60Hz, 5.5a

20 amps

110V

5.5 psig (38 kPa)

1450 o F (787 o C)

1.3 gal/hr (5.0 L/hr)

115V, 60Hz, 5.5a

20 amps

110V

5.8 psig (40 kPa)

1450 o F (787 o C)

210KTR

210,000 Btu/hr (61.5 kW)

1.6 gal/hr (6.0 L/hr)

115V, 60Hz, 5.5a

20 amps

110V

8.5 psig (58.6 kPa)

1450 o F (787 o C)

Fuel Tank Capacity:

Ignition:

4 gallons (15.1 L) 6 gallons (22.7 L) 8.45 gallons (32 L) 13.5 gallons (51 L) 13.5 gallons (51 L)

Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous

Spark Generator: Igniter 13 kV, 10ma

Primary Safety Control: Solid State Control

Certification:

Igniter 13 kV, 10ma

Solid State Control

Igniter 13 kV, 10ma

Solid State Control

Igniter 13 kV, 10ma

Solid State Control

Igniter 13 kV, 10ma

Solid State Control

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. 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

Be sure to follow advice about ventilation in the Safety Precautions section.

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. Recommended for use with No.1-K kerosene fuel. Factory tested for use with No.2-K kerosene, No.1 or No.2 Diesel,

No.1 or No.2 fuel oil or JP8 Jet A fuel and these fuels may be used as well. Never use gasoline, oil drained from crank cases, naphtha, paint thinners, alcohol or any other highly flammable fuels.

2. Check the heater thoroughly for damage. DO NOT operate a damaged heater.

3. DO NOT modify the heater or operate a heater which has been modified from its original condition.

4. For indoor use only. Not for use where exposed to weather.

5. Use in well ventilated areas, provide at least 2 sq. ft. (0.19 sq. m.) of opening near the floor and 2 sq. ft. (0.19 sq. m.) near the ceiling directly to outdoors. Increase air openings as marked for each additional heater.

Mr. Heater, Inc.| Kerosene Forced Air Heater

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6. Always keep combustibles, like paper and wood at least

8 ft. (2.4 m) from the heater outlet and 3 ft. (1.0 m) from the top, sides and inlet. Locate 10 ft. (3.0 m) from canvas or plastic coverings and secure them to prevent flapping movement.

7. Caution: Due to the high surface and exhaust temperatures, adults and children must observe clearances to avoid burns or clothing ignition. Do Not Touch. Keep children, clothing, and combustible away.

8. Install the heater such that it is not directly exposed to water spray, rain and / or water.

9. Never use in areas normally for habitation and /or where children may be present.

10. Operate only on a stable, level surface. (MH50KR &

MH75KTR – See wood floor warning).

11. Do not use with duct work. Do not restrict inlet or exit.

12. Use only with 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).

13. Use only a properly grounded 3-prong receptacle or extension cord.

14. Do not move, handle, or service while hot or in operation.

15. Use only in accordance with local, state (provincial) or national requirements, ordinances and codes.

OpERATING INSTRuCTIONS

UNPACKING

1. Remove heater from carton.

2. Remove all protective material which may have been applied to the heater for shipment.

3. Check the heater for possible shipping damage. If any damage is found immediately contact the manufacturer at

800-251-0001.

ASSEMBlY (For 125,000, 175,000 and 210,000 BTU/hr models only, see figure 1, page 8.)

Wheels and handles are found in the shipping carton along with mounting hardware. The wheels, axle and mounting hardware are in a package. Tools required are a 5/16” nut driver, 3/8” open or adjustable wrench and standard pliers.

1. Assemble the wheels onto the wheel support as shown.

2. Install one of the cotter pins into the hole on one end of axle.

Operating Instructions and Owner’s Manual

3. Slide the large washer, then wheel onto the axle next to the cotter pin.

4. Slide the spacer onto the axle next to the wheel.

5. Slide the partially assembled axle through the wheel support frame.

6. Slide the spacer onto the axle next to the wheel support.

7. Slide the wheel then large washer onto the axle and hold in place with the remaining cotter pin.

8. Install the caps over the larger washers to finish the wheel assembly.

PREPARING FOR OPERATION

1. Check the heater for possible shipping damage. If any is found, immediately contact the manufacturer at

800-251-0001.

2. Follow all of the “Precautions”.

3. Fill the fuel tank with clean kerosene. In extremely cold weather, condensation may develop in the tank and it is recommended that a tablespoon of de-icer be added for each gallon (4 liters) of fuel in the tank. When filling the heater, use at least 2 gallons (8 liters) of fuel. Be sure heater is level and do not overfill. Use a funnel or can with a long fill spout.

IMpORTANT: Before filling fuel tank the first time or after extended storage periods, drain the fuel tank of any moisture or condensation.

4. Locate heater at a safe distance from combustible materials.

Models MH50KR & MH75KTR are not suitable for use on wood floors or other combustible materials. When used, the heater should rest on suitable insulating material at least 1 inch thick and extending 3 ft. or more beyond the heater in all directions.

MH50KR - Unplug unit. Wait 5 minutes. Plug back in.

MH75KTR, MH125KTR, MH175KTR & MH210KTR - Toggle switch to

“OFF” position, wait 5 minutes. Restart.

MAINTENANCE AND STORAGE

WARNING.

To prevent personal injury, unplug the heater from the wall outlet before servicing.

For maximum efficiency and trouble-free service, make the following periodic maintenance, cleaning and inspections.

AdjUSTING PUMP PRESSURE

Due to varying fuel viscosities and normal component wear the pump pressure on this heater may need to be adjusted.

ADJUSTMENT PROCEDURE:

1.

2.

Fill fuel tank.

Start heater.

3.

4.

5.

Locate the fuel pressure adjustment screw (ref. #29) in the exploded parts drawing. The pressure adjustment screw is located at the rear of the heater, in the air filter housing cover (approx.2” from the left side and 1” from the top).

Remove and discard the rubber cap (ref. #4) to expose the screw.

Using a flat bladed screw driver, turn the pump pressure adjustment screw clockwise to increase pump pressure and/ or counter-clockwise to decrease pump pressure. Base pump pressures can be found in the specifications chart on page 3 of the “Operating Instructions and Owners’ Manual”.

For best results, the nose cone in the combustion chamber should be cherry red with no dark spots and the flame should not extend beyond the nose cone.

HEATER START up

1. MH50KR: Plug the heater into a grounded 115V, 60 Hz, 1 Ø outlet.

MH75KTR, MH125KTR, MH175KTR & MH210KTR: Turn thermostat to lowest setting, make sure “On/Off” switch is “Off”. Plug the heater into a grounded 115V, 60 Hz, 1 Ø outlet. Turn thermostat to highest setting. Start heater by pushing toggle switch to “On” position (light signifies switch is in “ON” position). Adjust thermostat to desired setting.

Heater will cycle on/off as heat is required.

EXTENSION CORD REQUIREMENTS: Up to 100’ (30.5m) use

16 awg. conductor. 101’ - 200’ (30.5 - 61.0m) use 14 awg. conductor.

For all models:

• In cold weather (below 10° F), starting may be improved by holding a finger over the vent hole of the pump adjustment screw cap until the heater starts.

• This unit is equipped with an interrupt circuit. The reset is integrated into the “On/Off” switch. If the unit does not start, toggle the switch to “Off”, wait 5 min. and toggle the switch to “On”.

HEATER SHuT DOWN

1. MH50KR: Unplug heater from power source.

MH75KTR, MH125KTR, MH175KTR & MH210KTR: Push

“On/Off” switch to “Off” position. For extended shutdown, unplug heater from power source.

RESTART AFTER SAFETY SHuTDOWN ( MH50KR, MH75KTR,

MH125KTR, MH175KTR & MH210KTR) See page 7

Mr. Heater, Inc. | Kerosene Forced Air Heater

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IMPROPER PRESSURE ADJUSTMENT problem: Heater does not have a strong consistent flame.

Heater smokes and spits raw fuel.

Nose cone does not get cherry red.

Adjustment: Pump pressure is too low.

Turn adjustment screw clockwise to increase pump pressure.

problem: Flame extends beyond the end of the heater.

Adjustment: Pump pressure is too high.

Turn adjustment screw counter clockwise to decrease pump pressure.

DAILY SCHEDULE

1. GENERAL. Make general visual inspection of heater for loose or damaged parts. Check nuts and bolts to insure against looseness caused by vibration or rough handling. Damaged parts should be repaired or replaced before using heater again. Check heater operation to be sure it is operating normally (See “Servicing” section for description of normal operation).

2. FILTERS. Dirty air or fuel filters will cause an imbalance in the air-fuel mixture. The best indication that this condition exists is an increase in odors or difficulty getting your heater to ignite. This heater should never be operated without the filters in place. If required, clean filters as described under

“500 Hours” and “Annual Schedules”.

Operating Instructions and Owner’s Manual

500 HOUR SCHEDULE

1. AIR INTAKE FILTER. Remove and wash the filter element with a mild detergent, dry thoroughly and replace. Do not oil the filter element. If your heater is used where there is considerable dust or dirt, clean as often as necessary

(approximately every 50 hrs.).

2. REMOVE DUST. Clean heater twice a season (more often under dusty conditions). Remove accumulated dust from the transformer, burner, motor and fan blades with compressed air. Wipe area clean with a clean dry cloth. Inspect area to insure all foreign materials are removed, especially around the burner and combustion area.

3. CAD CELL. Clean the glass portion of the cad cell with a soft dry cloth.

4. NOZZLE. Accumulation of dirt from fuel and carbon from the compressor vanes will eventually fill up the passages in the nozzle, resulting in reduction of fuel and air flow. Pressure will gradually increase giving improper fuel-air mixture and excess odor and smoke. If this occurs, replace the fuel nozzle.

5. FUEL TANK. Clean twice a season (during frequently used periods, clean twice a month). Drain and flush the fuel tank with clean fuel oil.

ANNUAL SCHEDULE

1. AIR OUTPUT FILTER. Remove the air output filter and tap the contaminated side gently on a solid object to remove contaminates. Compressed air or liquids should not be used to clean this filter. Reinstall cleaned filter in filter body in the same position as it was when removed. If the filter appears extremely dirty, replace it with a new filter of the same type.

When replacing the filter cover, be sure the gasket is firmly in place and the screws in the filter cover are tight to prevent air leaks.

2. FUEL FILTER. Remove the fuel filter from fuel line and direct compressed air through the filter in the opposite direction of fuel flow. Safety glasses should be worn when using compressed air.

3. AIR AND FUEL LINES. If the air or fuel lines are removed during cleaning, be sure all connections are tight before operating unit.

STORAGE

Store the heater in a dry location free from fumes or dust.

At the end of each heating season, clean the heater as described in the MAINTENANCE section. Drain and flush the fuel tank with clean fuel. The manufacturer recommends completely filling the tank with fuel for extended storage to minimize condensation inside the tank.

SERVICING

A hazardous condition may result if a heater is used that has been modified or is not functioning properly.

When the heater is working normally:

* The flame is contained within the heater.

* The flame is essentially yellow.

* There is no strong disagreeable odor, eye burning or other physical discomfort.

* There is no smoke or soot internal or external to the heater.

* There are no unplanned or unexplained shut downs of the heater.

Mr. Heater, Inc.| Kerosene Forced Air Heater

5

Operating Instructions and Owner’s Manual

DIAGNOSTIC SAFETY SHuTDOWN AND TROuBlE SHOOTING

Model MH125KTR, MH175KTR and MH210KTR heaters are equipped with a diagnostic control board and flashing LED error indicator. This flashing LED signals indicate unit operation status. See the following diagnostic guide for unit status and corrective action if necessary.

lED

Steady ON uNIT OpERATION TROuBlE SHOOTING

System Check System performing self test. No action required.

Steady OFF

2 Flashes

3 Flashes

4 Flashes

Power Light

Operation OK No action required.

No flame detected Heater fails to start during the first 30 sec. of operation.

1.

2.

Check wiring to motor (per wiring schematic in manual).

Make sure that the pressure gauge is in place and not damaged.

3.

4.

5.

6.

7.

8.

Adjust pressure for proper heater operation per manual.

With heater disconnected from AC source, rotate fan clockwise to verify motor is free.

Remove air filter housing from motor and inspect the pump rotor for damage. If damaged, replace rotor assembly.

If wiring is correct, pump rotor is okay, and motor is not rotating freely, replace motor or power-pack assembly.

If problem persists, replace oil flame control assembly.

Check for spark arching from the electrode assembly (ref. 50), to the combustion cylinder (ref. 39).

9. Check the cad cell (ref. 38) for continuity.

High limit switch failure

1. Make sure heater is cooled off, press reset switch and retry.

CAD Cell Failure

•

•

•

3.

4.

1.

2.

•

•

Check wiring to cad cell (per wiring schematic in manual).

Clean cad cell photo cell.

Slide cad cell out of cad cell holder.

Push the photo cell out of the black rubber cad cell housing by pushing on the 2 purple wires.

Clean the photo cell with a soft cloth and rubbing alcohol.

Pull the photo cell back into the cad cell housing and reinstall into holder.

Test heater.

If the heater still does not operate, replace cad cell.

Replace oil flame control assembly.

Power to control 1. Sensing power. No action required.

Model MH50KR and MH75KTR heaters are NOT equipped with a diagnostic control board or flashing LED error indicator. See the following troubleshooting guide for unit status and corrective action if necessary.

SYMpTOM

High limit switch Open Circuit

Sparks, calling for flame, but no or slow motor operation

TROuBlE SHOOTING

1) Make sure heater is cooled off, toggle switch to “OFF” position, wait 5 minutes and retry.

1) Check wiring to motor (per wiring schematic in manual).

2) Make sure that the pressure gauge is in place and not damaged.

3) Adjust pressure for proper heater operation per manual.

4) With heater disconnected from AC source, rotate fan clockwise to verify motor is free.

5) Remove air filter housing from motor and inspect the pump rotor for damage. If damaged, replace rotor assembly.

6) If wiring is correct, pump rotor is okay, and motor is not rotating freely, replace motor or power-pack assembly.

7) If problem persists, replace oil flame control assembly.

8) Check for spark arching from the electrode assembly, to the combustion cylinder.

9) Check the cad cell for continuity.

No Spark

Abnormal Motor Operation -

Motor overheats or Stops

Unable to Detect Flame

Flame Control Failure

1) Check length and gage of extension cord for proper amp. draw. (Check requirements on page 4.)

2) Check wiring to igniter (per wiring schematic in manual).

3) Check gap between electrode probes (2.3 - 3 mm).

4) Still no spark, replace igniter assembly.

5) Replace oil flame control assembly.

1) Motor speed too low (Motor should operate at 3450rpm) - Replace motor.

2) With heater disconnected from AC source, rotate fan clockwise to verify motor is free.

3) Remove air filter housing from motor and inspect the pump rotor for damage. If damaged, replace rotor assembly.

4) If wiring is correct, pump rotor is okay, and motor is not rotating freely, replace motor or power-pack assembly.

5) Replace oil flame control assembly.

1) Check wiring to cad cell (per wiring schematic in manual).

2) Clean cad cell photo cell.

a) Slide cad cell out of cad cell holder.

b) Push the photo cell out of the black rubber cad cell housing by pushing on the 2 purple wires.

c) Clean the photo cell with a soft cloth and rubbing alcohol.

d) Pull the photo cell back into the cad cell housing and reinstall into holder.

e) Test heater.

3) If the heater still does not operate, replace cad cell.

4) Replace oil flame control assembly.

1) Check wiring in heater (per wiring schematic in manual).

2) Replace oil flame control assembly.

Mr. Heater, Inc. | Kerosene Forced Air Heater

6

Operating Instructions and Owner’s Manual

WIRING dIAGRAM

18AWG GRN

18AWG BLK

18AWG WHT

CORD SET

1

ON/OFF SWITCH

2

3

18AWG YELL

18AWG YELL

HI-LIMIT

SWITCH

MH50KR/MH75KTR

18AWG BLUE

THERMOSTAT

75KT,125KT,175KT,210KT ONLY

18AWG GRN

AC OUTLET

125KT,175KT,

210KT ONLY

MOTOR

L

H1 H2

FLAME CONTROL SCHEMATIC

(connections may not be in same position on circuit board)

M1 M2 I1 I2

N

18AWG ORG

18AWG ORG

18AWG PINK

18AWG PINK MOTOR CAPACITOR

18AWG RED

18AWG RED

18AWG PURPLE

18AWG PURPLE

17AWG BLK

ELECTR0DE

18AWG GRN

IGNITION TRANSFORMER

CORD SET

18AWG GRN

18AWG BLK

18AWG WHT

MH125KTR/MH175KTR/MH210KTR

ON/OFF SWITCH

1

2

3

18AWG BLUE

18AWG BLUE THERMOSTAT

18AWG PURPLE

18AWG PURPLE CAD CELL

AC OUTLET

18AWG GRN

1 2

9 10

11 12

3 4 5

CIRCUIT BOARD

24AWG BLK

6

24AWG RED

7 8

HI-LIMIT

SWITCH

18AWG YELL

18AWG YELL

MOTOR

18AWG PINK

18AWG PINK

18AWG ORG

18AWG ORG

MOTOR CAPACITOR

18AWG RED

18AWG RED

RED LED

17AWG BLK

ELECTR0DE

IGNITION TRANSFORMER

18AWG GRN

The parts lists and wiring diagram show the heater as it was constructed. Do not use a heater which is different from that shown. Heater performance is effected by air pressure setting. If there is any uncertainty about the air pressure setting,

Mr. Heater, Inc.| Kerosene Forced Air Heater

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have it checked.

A heater which is not working right must be repaired, but only by a trained, experienced service person.

Operating Instructions and Owner’s Manual

PARTS LIST

Ref. Item # Item # Item # Item # Item # description

MH50KR MH75KTR MH125KTR MH175KTR MH210KTR

1 21036 21036 21036 21036 21036 Power Cord

2 21832 21833 21915 21834 21834 Fuel Tank Assembly

3 **** 21883 21884 21885 21886 RadiationShield Ass’y

4 21807 21808 21809 21809 21809 Power Pac Ass’y

5 21686 24343 24346 24346 24346 Fuel Tube

6 21835 21836 21837 21837 21837 Grille Assembly

7 24011 24011 24011 24011 24011 Oil cad cell Bracket

8 28779 28779 287 92 287 80 2878 0 Fuel Filter

9 23449 23449 23449 23449 23449 Motor Cord Sleeve

10 21839 21840 21841 21842 21843 Bottom Shell

11 21844 21846 21848 21850 21852 Top Shell, Burner

12 21854 21856 21858 21860 21862 Top Shell, Insp. Cover

13 21864 21864 21865 21865 21865 Motor Mounting Brkt

14 **** 28788 28735 28735 28735 Start Capacitor

15 23725 23725 24345 24345 24345 Air Tube

16 26225 26225 26225 26225 26225 Snap Bushing

17 21794 21794 26901 26902 22105 High Limit Control

18 F226831 F226831 F226831 F226831 F226831 Kit, Rotor

19 ****

20 ****

- Air Pump Rotor w/Vanes

- Nylon Air Pump Insert

26898 26898 26898 26898 Receptacle, 110V

22104 22104 22104 22104 AC Receptacle Cover

21 26833 26833 26833 26833 26833 Air Pump Cylinder

22 21810 21810 21810 21810 21810 Outlet Housing

23 21812 21812 21812 21812 21812 Inlet Housing

24 **** **** 22257 22257 22257 Burner Head Ass’y

25 F221887 F221887 F221887 F221887 F221887 Kit, Filter

26 21814 21814 21814 21814 21814 Outlet Filter

27 21815 21815 21815 21815 21815 Inlet Filter

28 F266842 F266842 F266842 F266842 F266842 Kit, Pump Adjustment

- Nylon Pipe Plug

- Pump Adj. Screw Cap

- Ball,. Pressure adj.

- Spring, Pressure adj.

PARTS LIST

Ref.

10

11

*

8

9

6

7

4

5

3

*

1

2

*

Item # Item # Item # description

MH125KTR MH175KTR MH210KTR

22179

28749

28750

28751

28754

21897

28787

22169

22172

22173

22174

22176

22177

22178

22169

22172

22173

22174

22176

22177

22178

22179

28749

28750

28751

28754

21897

28787

22169 Wheel Assembly, 10”

22172 Upper Handle w/Spring Clips

22173 Lower Handle, Right

22174 Lower Handle, Left

22176 Leg Support, Right

22177 Leg Support, Left

22178 Support Leg

22179 Front Handle w/Axle

28749 Large Retainer Washer

28750 Cotter Pin

28751 Hub Cap

28754 Extension Cord Caddy

21897 Wheel Spacer

28787 Hardware Package

Ref. Item # Item # Item # Item # Item # description

MH50KR MH75KTR MH125KTR MH175KTR MH210KTR

29 21866 21866 21867 21867 21867 Flame Control Ass’y

30 21816 21816 21816 21816 21816 Flame Control Bracket

31 269 54 2 4 9 55 269 54 269 54 2 6 954 Cad Cell Flame Sensor

32 21882 21868 21869 21870 21871 Comb.Chamber Cyl.Ass’y

33 26909 26909 26909 26909 26909 Fuel Cap

34 26910 26910 26910 26910 26910 Fuel Cap Gasket

35 27339 21817 21818 21818 21818 Motor

36 27790 27790 28739 28739 28739 Nozzle Adapter

37 27421 28740 26885 26866 22108 Fan

38 22142 22142 22142 22142 22142 Igniter Assembly

39 27416 28741 28742 28743 22109 Fuel Air Aspir. Nozzle

40 26223 26223 26223 26223 26223 Strain Relief Bushing

41 21819 21819 21819 21819 21819 Electrode Assembly

42 21820 21820 21820 21820 21820 Electrode Insulated Cover

43 21821 21821 21821 21821 21821 Hose Barb Adapter

44 ****

45 ****

21822 21822 21822 21822 Thermostat Knob

21734 21734 21734 21734 Thermostat Assembly

46 28785 28785 28785 28785 28785 ON/OFF Switch

47 **** 28791 28778 28778 28778 Fuel Gauge

48 21830 21888 21826 21826 21826 Control Panel

49 21892 21892 21893 21893 21893 Control Panel Back

50 28786 28786 28786 28786 28786 Pressure Gauge, Round

51 27094 27094 ****

52 27095 27095 ****

53 21813 21813 21813 21813 21813 Gasket, Outlet Filter

* 24171 24171 ****

*

* 27429 27429 27429 27429 27429 Nozzle Ext. Retaining Ring

*

*

26227 26227 26227

28745 28745 ****

****

* ****

****

****

****

****

****

****

****

****

Clip Handle Mtg.

Handle

Nozzle mtg. plate

Snap Bushing

Fuel Line Bushing

22146 22146 22146 22146 Bracket Thermostat Mtg.

26070 26070 26070 26070 Clamp Loop

* Not shown in the drawing

Handle and wheel assembly for MH125KTR,

MH175KTR & MH210KTR only.

2

10

6

3

1

11

4

7

9

5

8

* Not shown in drawing

Figure 1.

Mr. Heater, Inc. | Kerosene Forced Air Heater

8

Operating Instructions and Owner’s Manual

11

Kerosene Forced Air Heater • Model MH50KR, MH75KTR, MH125KTR, MH175KTR, MH210KTR

27

22

50

28

23

35

9

25

53

26

12

43

21

18

52

51

Filter Kit

44

45

3

10

33

34

29

47

40

7

32

41

17

39

36

42

24

31

5

15

19

20

30

13

37

4

38

6

49

8 16

1

14

2

48

46

Mr. Heater, Inc.| Kerosene Forced Air Heater

9

Operating Instructions and Owner’s Manual

OpERATING INSTRuCTIONS

AND OWNER’S MANuAl

Model #

MH50KR, MH75KTR,

MH125KTR, MH175KTR,

MH210KTR

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

Our office hours are 8:30 AM – 5:00 PM, EST, Monday through Friday.

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.

MR. HEATER, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 800-251-0001

Mr. Heater is a registered trademarks of

Enerco Technical Products, Inc.

© 2009, Enerco/Mr. Heater. All rights reserved

UL-733, &CSA/CAN3-B140.9.3

Mr. Heater, Inc. | Kerosene Forced Air Heater

10

Operating Instructions and Owner’s Manual