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Mr. Heater | Portable Big Buddy Radiant Heater

Operating Instructions and Owner’s Manual

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!

FUEL GAS ODOR

Propane (LP) gas and natural gas 
have man-made odorants added 
specifically for detection of fuel gas 
leaks.
If a gas leak occurs you should be 
able to smell the fuel gas. Since 
propane (LP) gas is heavier than 
air you should smell for the gas 
odor low to the floor. ANY GAS 
ODOR IS YOUR SIGNAL TO GO INTO 
IMMEDIATE ACTION!

• 

Do not take any action that could 
ignite the fuel gas. Do not operate 
any electrical switches. Do not pull any 
power supply or extension cords. Do 
not light matches or any other source 
of flame. Do not use your telephone.

• 

Get everyone out of the building and 
away from the area immediately.

• 

Close all propane (LP) gas tank or 
cylinder fuel supply valves, or the main 
fuel supply valve located at the meter if 
you use natural gas.

• 

Propane (LP) gas is heavier than air 
and may settle in low areas. When you 
have reason to suspect a propane (LP) 
gas leak, keep out of all low areas.

•  Use your neighbor’s phone and call 

your fuel gas supplier and your fire 
department. Do not re-enter the 
building or area.

• 

Stay out of the building and away 
from the area until declared safe by 
the firefighters and your fuel gas 
supplier.

• 

FINALLY, let the fuel gas service person 
and the firefighters check for escaped 
gas. Have them air out the building 
and area before you return. Properly 
trained service people must repair any 
leaks, check for further leakages, and 
then relight the appliance for you.

ODOR FADING - NO ODOR 

DETECTED

• 

Some people cannot smell well. Some 
people cannot smell the odor of the 
man-made chemical added to propane 
(LP) gas. You must determine if you 
can smell the odorant in these fuel 
gases.

• 

Learn to recognize the odor of 
propane (LP) gas. Local propane (LP) 
gas dealers will be more than happy to 
give you a scratch and sniff pamphlet. 
Use it to become familiar with the fuel 
gas odor.

• 

Smoking can decrease your ability 
to smell. Being around an odor for 
a period of time can affect your 
sensitivity to that particular odor. 
Odors present in animal confinement 
buildings can mask fuel gas odor.

• 

The odorant in propane (LP) gas 
is colorless and the intensity of 
its odor can fade under some 
circumstances.

• 

If there is an underground leak, the 
movement of gas through the soil can 
filter the odorant.

• 

Propane (LP) gas odor may differ 
in intensity at different levels. Since 
propane (LP) gas is heavier than air, 
there may be more odor at lower 
levels.

• 

Always be sensitive to the slightest 
gas odor. 

If you continue to detect 

any gas odor, no matter how small, 
treat it as a serious leak. Immediately 
go into action as discussed previously.

ATTENTION - CRITICAL 

POINTS TO REMEMBER! 

• 

Propane (LP) gas has a distinctive 
odor. Learn to recognize these odors. 
(Reference Fuel Gas Odor and Odor 
Fading sections above.

• 

Even If you are not property trained in 
the service and repair of the heater, 
ALWAYS be consciously aware of the 
odors of propane (LP) gas.

• 

If you have not been properly trained 
in repair and service of propane (LP) 
gas then do not attempt to light 
heater, perform service or repairs, or 
make any adjustments to the heater 
on the propane (LP) gas fuel system. 

SAFETY INSTR

UCTIONS

• 

A periodic sniff test around the heater 

or at the heater’s joints; i.e. hose, 

connections, etc., is a good safety 
practice under any conditions. If you 
smell even a small amount of gas, 
CONTACT YOUR FUEL GAS SUPPLIER 
IMMEDIATELY. DO NOT WAIT!

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.

• 

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 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 relight.

• 

Operating time will vary based on the 
temperature of the surroundings and 
if running the heater on low, medium, 
or high setting. Rough guidelines are 
as follows: Single 1lb cylinder (1.5 to 

6hrs); 2 x 1lb cylinders (3 to 12 hrs); 
20lb cylinder (24 to 108hrs); 2 x 20lb 

cylinders (48 to 216hrs). Heater may be 
operated from quick disconnect, one 
or both regulated inlets. Due to the 
properties of LP gas, runtimes can be 
significantly reduced when operating 
continuously at temperatures 

below 20ºF. Use of a 20 lb. tank is 

recommended in these conditions. 

Summary of Contents for MH18B

Page 1: ...ter branded accessories See page 10 for WARNING information WARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or...

Page 2: ...other reproductive harm for more information go to www P65Warnings ca gov WARNING If the recreational enclosure does not have a window or roof vent DO NOT USE THIS HEATER inside NOTICE Not for use in...

Page 3: ...ith the proper fuel type approved for the appliance can be used This heater can be used in a recreational enclosure only if the enclosure has a window or roof vent This heater requires a vent area of...

Page 4: ...odor may differ in intensity at different levels Since propane LP gas is heavier than air there may be more odor at lower levels Always be sensitive to the slightest gas odor If you continue to detec...

Page 5: ...nt is not left unattended d This heater requires a vent area of 18 square inches example 4 25 x 4 25 opening minimum for adequate ventilation during operation Do not use other fuel burning appliances...

Page 6: ...GAS CYLINDERS MUST BE DISCONNECTED FROM HEATER WHEN NOT IN USE LIGHTING OPERATING INSTRUCTIONS FOR USE WITH HOSE CONNECTED TO A REMOTE CYLINDER MAXIMUM SIZE 20 LBS This Heater may be used with a remo...

Page 7: ...E TO CHECK FOR LEAKS DO NOT OVERTIGHTEN SEE WARNING ON PLASTIC DOORS 6 Depress and turn Control Knob counterclockwise to PILOT position and hold down for 1 5 seconds See Figure 4 This may take longer...

Page 8: ...m Release from 2 top clips Set aside 5 Remove 3 screws attaching lower baffle to expose burner air openings 6 Inspect interior of casing assembly for accumulation of dust lint or spider webs If necess...

Page 9: ...from bumping heater 3 Re light REMEDY SYMPTOM Spark electrode produces spark but pilot does not light CAUSE 1 No gas to heater 1 Install disposable cylinder or connect hose and filter where required a...

Page 10: ...n used in a manner inconsistent with the warnings and instructions contained in the owner s manual including but not limited to using a heater for the cooking or warming of foods or c has been used wi...

Page 11: ...ombusti n Ver p gina 2 LEA CUIDADOSAMENTE LAS INSTRUCCIONES Lea y siga todas las instrucciones Conserve estas instrucciones en un lugar seguro para futura referencia No permita que nadie que no haya l...

Page 12: ...casa de vivienda en California Este calefactor est equipado con un SISTEMA DE SEGURIDAD dise ado para apagar el calefactor si no cuenta con suficiente aire fresco ADVERTENCIA NO ALTERE EL SISTEMA DE...

Page 13: ...be ser sustituido antes del funcionamiento del calentador El artefacto deber ser inspeccionado antes de cada uso Es posible que una limpieza frecuente sea necesaria El control de los compartimientos e...

Page 14: ...olor puede descolorarse en algunas circunstancias Si hay un agujero subterr neo el movimiento de gas por el suelo puede filtrar el odorant El propano LP olor de gas puede diferenciarse en la intensida...

Page 15: ...n combusti n e El calentador port til utilizado deber descontinuarse y retirarse del edificio en el momento en que los electrodom sticos instalados permanentemente vuelvan a funcionar INSTRUCCIONES DE...

Page 16: ...ede ser usado en un recinto recreacional o recinto de trabajo de construcci n temporal con un cilindro de propano refillable remoto S LO cuando el cilindro es localizado al aire libre y el Calentador...

Page 17: ...rio repita esta presionada la perilla de control hacia adentro en la posici n de Piloto por 30 60 segundos 8 Despu s de encender el piloto suelte la perilla La perilla debe quedar extendida por comple...

Page 18: ...Reservado 5 Retire los tres 3 tornillos que fijan la parte inferior de la campana extractora para dejar expuestas las aberturas de aire de los quemadores 6 Inspeccione el interior del ensamble de la c...

Page 19: ...rlo S NTOMA El electrodo de encendido produce chispa pero el piloto no se enciende CAUSA SOLUCI N 1 No llega gas al calefactor 1 Instale un cilindro descartable o conecte la manguera y encien da la v...

Page 20: ...DESCARGO DE RESPONSABILIDAD Esta garant a no cubre ning n producto que a haya estado sujeto a mal uso o negligencia b se haya utilizado de manera inconsistente con las advertencias e instrucciones con...

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