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Mr. Heater MH12B Operating instructions

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MR HEATER, INC., 4560W.160th ST., CLEVELAND, OHIO 44135 800-251-0001
OPERATING INSTRUCTIONS

 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
FOR US SALE EXCEPT MASSACHUSETTS
MH12B
Model #
03/13 Rev13A 32094
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.
— 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flame.
• Shutoffgastoappliance.
— Servicemustbeperformedbyaqualifiedserviceagency.
Thisisanunventedgas-fired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2.
Serial numbers on back cover.
LANGUAGES
ENGLISH
Pages E1 — E8
SPANISH
Pages S1 — S8
2
Mr. Heater | Portable Propane Heater OperatingInstructionsandOwner’sManual
E-
SPECIFICATIONS
MODEL NO. .....................................................MH12B
GASTYPE ......................................................PROPANE
INPUT BTU/HR. .....................................6,000 / 12,000
CLEARANCE TO COMBUSTIBLES
TOP ....................................................................... 30”
FRONT ....................................................................24”
SIDES ...................................................................... 6”
REAR ....................................................................... 0”
CONTENTS
GeneralSafetyInstructions ............................................... 2
OdorFadeWarning ..........................................................3
GeneralInformation ..........................................................4
Operating with Disposable Propane Cylinders ...................4
OperatingWithHoseConnectedtoRemoteCylinder ........ 5
Maintenance..................................................................... 5
Troubleshooting ................................................................ 6
Parts List ........................................................................... 7
Parts Ordering Information ...............................................8
Service Information ...........................................................8
• Due to high temperatures, the appliance should be
located out of traffic and away from combustible materi-
als.(SeeSpecificationsonpage2.)
• Do not use this heater with non-approved accessories
• 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12squareinches
(example3”x4”opening)minimumforadequateven-
tilation 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CONNEC-
TIONDONOTREGULATEORREDUCEPROPANETANK
SUPPLYPRESSURETOHEATER!
• REGULATORINHEATERMUSTALWAYSBEINPLACE
DURINGOPERATION.
• If the wire guard is removed for servicing, it must be
replaced prior to operating the heater.
• The appliance should be inspected before each use.
Frequentcleaningmayberequired.Thecontrolcom-




 Some carpets or linoleum surfaces may discolor if
heater is placed directly on these floor coverings.

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!

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).

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.
This product contains chemicals known to the State of California to cause cancer and birth defects or
other reproductive harm.

Any changes to this heater or its controls can be
dangerous.

If the recreational or commercial enclosure does not
have a window or roof vent, DO NOT USE THIS HEATER
INSIDE.
Notforuseina“dwellinghome”inCalifornia.
3
OperatingInstructionsandOwner’sManualMr. Heater | Portable Propane Heater
E-
ODOR FADE WARNING
WARNING
Asphyxiation Hazard
•Donotuseinunventilatedareas.
•Theflowofcombustionandventilationairmust
not be obstructed.
•Properventilationairmustbeprovidedto
supportthecombustionairrequirementsofthe
heater being used.
•Refertothespecificationsectionoftheheater’s
manual, heater dataplate, or contact the factory
to determine combustion air ventilation
requirementsoftheheater.
•Lackofproperventilationairwillleadto
improper combustion.
•Impropercombustioncanleadtocarbon
monoxidepoisoningleadingtoseriousinjuryor
death.Symptomsofcarbonmonoxidepoisoning
can include headaches, dizziness and difficulty
in breathing.


added specifically for detection of fuel gas leaks.
If a gas leak occurs you should be able to smell the



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.
partments, 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 wa-
ter.
• 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HEAT-
ER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!
•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
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.

•Somepeoplecannotsmellwell.Somepeoplecannot
smell the odor of the man-made chemical added to
propane(LP)ornaturalgas.Youmustdetermineifyou
can smell the odorant in these fuel gases.
•Learntorecognizetheodorofpropane(LP)gasand
natural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.
•
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.
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.


•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properlytrainedintheserviceand
repairoftheheater,ALWAYSbeconsciouslyawareof
theodorsofpropane(LP)gasandnatural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.
4
Mr. Heater | Portable Propane Heater OperatingInstructionsandOwner’sManual
E-
damaged, punctured or deteriorated.
ALWAYSATTACHORDETACHCYLINDEROUTDOORS
AWAYFROMFLAMES,OTHERIGNITIONSOURCES,AND
ONLYWHENHEATERISCOOLTOTOUCH.NEVERSMOKE
WHENATTACHINGORREMOVINGPROPANECYLINDER
ORMAKINGREMOTE
CONNECTIONS!
• Use only LP-gas
cylinders marked in
accordance with the
U.S. Dept. of Trans-
portation(DOT).
• Use only 16.4 oz.
(1lb.)disposable
cylinders that mate
with No. 600 valve
connection.
• Heater and attached
cylinder must be in
an upright position
during operation.
• Make sure four-posi-
tionControlKnobis
in“OFF”position;see
Figure 1.
• Openrighthand
access door, swivel
regulator outward for
easy tank installation.
Screw 1 lb. disposable
LP-gas supply cylin-
der clockwise (from
bottom)intoportable
heateruntilhand-tight;
see Figure 2.
• Check cylinder con-
nection for leaks with
soapy water at the
threaded connection
under the domed
plastic cover where
the cylinder screws
into the regulator. SEE
WARNING!ONPLAS-
TIC ACCESS DOOR.
Close Access Door.
• TurnControlKnob
counterclockwise to
“PILOT”positionanddepresstolight;seeFigure3.
• Ifheaterdoesnotlight,holddownforapproximately30
seconds;releaseanddepressagain.Repeatuntilpilot
lights.
• After pilot lights, hold down for 30 -60 seconds and
thenreleaseknob.Knobshouldreturntofullyextended
position;seeFigure4.Tooperateheaterslightlydepress
knobandgentlyturntolockinthe“HI”positiontolight
• 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!

• 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.
Theheatercanbeusedoutdoors,butmayexperence
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 or-
ange. 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 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.
• Theprotectivegrillonthefrontofthisheateriscoated
withaspecialhigh-temperatureresistantpaint.When
the heater is used for the first time, the grill may give
off noticeable smoke or fumes. This is normal and will
notoccurduringsubsequentuses.Thefumesarenot
harmful.
• 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. Up to 3 to 6 hours
on a 1 lb. cylinder. Up to 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, the 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.



Always inspect propane cylinder and heater
propane connections for damage, dirt, and debris before
attaching propane cylinder. Do not use if head of cylinder is
Figure 3: Ignition
¥
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Figure 2: Attach fuel tank
Figure 1: “Off” position.
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OperatingInstructionsandOwner’sManualMr. Heater | Portable Propane Heater
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burner tile. Leave
on“HI”position
until burner tile turns
bright orange.
• After burner tile
has turned bright
orange, adjust heat
output by turning
ControlKnobtode-
siredposition(“LO”
or“HI”setting)

DONOTOPERATEHEATERUNLESSCONTROLKNOBIS
LOCKEDINAPOSITIONMARKED“HI”,“LO”or“PILOT”.
NEVERSETCONTROLKNOBBETWEENLOCKEDPOSI-
TIONS.POORCOMBUSTIONANDHIGHERLEVELSOF
CARBONMONOXIDEMAYRESULT.
• To shut off heater, slightly push down and turn Control
Knobclockwiseto“OFF”position.
 After turning heater off, wire guard will
remain hot. Allow to thoroughly cool before storing.
• Do not operate, store or remove cylinder near flam-
mable items or ignition sources.
• LP-GASCYLINDERSMUSTBEDISCONNECTEDFROM
HEATERWHENNOTINUSE!



•
This Heater may be used in a recreational enclosure or
temporary construction work enclosure with a remote
refillablepropanecylinderONLYwhenthecylinderis
located outdoors and the Heater is used with Mr. Heater
Hose No. F273701, F273702 or F272702 and fuel filter
F273699. Fuel filter must be replaced annually. Or use
F273704Buddyserieshose.Fuelfilternotrequired.
 NEVERbringarefillablepropanecylinder
indoors.Afireorexplosioncanoccurcausingproperty
damage,seriousinjuryordeath!
• Inspect the hose before each use of the heater. If there
isexcessiveabrasionorwear,orthehoseiscut,replace
prior to using the heater with one of the Mr. Heater
HoseNo’s.shownabove.
• The propane cylinder must include a listed overfilling
protection device as well as a collar to protect the cylin-
der valve.
• Heater must be in an upright position during operation.
• Makesurefour-positionControlKnobisin“OFF”posi-
tion;seeFigure1,atleft.
• Swivel regulator outward for easy hose installation.
Then screw hose connector into regulator on heater and
screw connector on other end of hose into LP-gas sup-
ply cylinder valve. Tighten all hose connections.
• Mr.Heaterstronglyrecommendsusingdisposablefuel
filter F273699 to trap any oil substances when connect-
ed to a remote cylinder that can make heater inoper-
able.
• Open valve at LP-gas supply cylinder.
• Check all hose connections for leaks with soapy water at
the threaded connection under the domed plastic cover
where the hose connector screws into the regulator and
atLP-gassupplycylinder.SEEWARNING!ONPLASTIC
DOMEDCOVER.
• TurnControlKnobcounterclockwiseto“PILOT”position
anddepresstolight;seeFigure3.
• Ifheaterdoesnotlight,holddownforapproximately30
seconds;releaseanddepressagain.Repeatuntilpilot
lights.
• After pilot lights, hold down for 30 -60 seconds and
thenreleaseknob.Knobshouldreturntofullyextended
position;seeFigure4.Tooperateheaterslightlydepress
knobandgentlyturntolockinthe“HI”positiontolight
burnertile.Leaveon“HI”positionuntilburnertileturns
bright orange.
• After burner tile has turned bright orange, adjust heat
outputbyturningControlKnobtodesiredposition
(“LO”or“HI”setting)
 Do not try to adjust heating levels by using
the propane tank shut off valve.

DONOTOPERATEHEATERUNLESSCONTROLKNOBIS
LOCKEDINAPOSITIONMARKED“HI”,“LO”or“PILOT”.
NEVERSETCONTROLKNOBBETWEENLOCKEDPOSI-
TIONS.POORCOMBUSTIONANDHIGHERLEVELSOF
CARBONMONOXIDEMAYRESULT.
 To shut off heater, shut off propane at supply tank,
allow heater to use up propane in supply line un
til heater shuts off, then slightly push down and
      
  After turning heater off, wire guard will
remain hot. Allow to thoroughly cool before storing.
• Whennotinuse,thegasmustbeturnedoffatthe
LP-gas supply cylinder. As stated before allow heater
to use up propane in supply line until heater shuts off.
WhentheLP-gassupplycylinderisnotdisconnected
from the heater, the heater and the cylinder must be
stored outdoors, in a well ventilated space, out of reach
of children, and must not be stored in a building, garage
or any other enclosed area.
• Indoor storage of the heater is permissible only if the
cylinder is disconnected and removed from the heater.
Cylinders must be stored outdoors out of the reach of
children and must not be stored in a building, garage or
any other enclosed area.
¥
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Figure 4: “Release knob.
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Mr. Heater | Portable Propane Heater OperatingInstructionsandOwner’sManual
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Figure 8
Figure 6
Control Knob
Fan Switch
• For added heat circulation turn red fan switch to on. The
fan switch is located just left of control knob side handle
support. See Figure 6.
• Installationof4D-cellbatteries(notincluded)isrequired
forfanoperation.Batteryboxislocatedonlowerback
panel of heater. Follow instructions on battery cover for
correct battery installation.
• Heater can also be powered by electrical adapter
F276127.Requiredadaptertobe6voltDCupto800
milliamp current with positive tip polarity. The adapter
receptical is located in the center of the battery cover
1/2”belowthewtopofthecover.
Storage Compartment
The MH12B has two storage compartments, with
access doors, on the left side of the heater. The forward
compartment(Ref.A)canbeusedtostorethe6Vpower
adapterand/orsparefuelfilter(neitherincluded).
Figure 7
A
B

Always keep the heater area clear and free from combus-
tible materials, gasoline and other flammable vapors and
liquids.
Keeptheventareas
(slots in the bottom
and the top at the
frontofheater)
clear at all times.
Visuallyinspectthe
pilot flame and
burner periodically
during use. The
pilot flame should
be blue in color
(notyellow)andwill
extendbeyondthethermocouple.Theflamewillsurround
the thermocouple just below the tip, see Figure 8.
A slight yellow flame may occur where the pilot flame
and main burner flame meet. The burner should be bright
orange (with a slight blue color around the border, a red-
orangehazethatisvisibleontheceramictileisacceptable)
and without a noticeable flame. A blue flame that rolls out
at the top of the ceramic tile indicates an accumulation of
dust, lint or spider webs inside the casing assembly and
main burner assembly. If the pilot is yellow or the burner
hasanoticeableflame,cleaningmayberequired.Usethe
following procedure to inspect the casing assembly and
main burner assembly.
It is necessary to periodically check the burner orifice and
burner venturi tube to make sure they are clear of insects/
nests or spider webs that may accumulate over time. A
clogged tube can lead to a fire.
1 Allow heater to thoroughly cool before performing any
maintenance.
2 Remove disposable 1 lb. cylinder from heater or turn
OFF gas supply at remote cylinder valve, and disconnect
hose from heater.
3 Remove(4)fourscrewsthatsecuretherearcovertothe
Heater.
4 Pivot cover outward from bottom. Release from 2 top
clips. Set aside.
5 Remove(4)fourburnerretainingscrewsandfuelline
from burner assembly. Remove burner assembly from
back of housing.
6 Inspect interior of casing assembly for accumulation
of dust, lint or spider webs. If necessary, clean interior
of casing assembly with a vacuum cleaner or apply air
pressure. Do not damage any components within casing
assembly when you are cleaning.
7 Inspect and clean main burner orifice (threaded into
orificeholder).Orificeholderisattachedtotheburner
assemblyventuriwith(2)twoscrews.
8 Inspectandcleanpilot(mountedtobracket)byusinga
The rear compartment (Ref B) can be used to store a spare 1# pro-
pane tank (not included)

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OperatingInstructionsandOwner’sManualMr. Heater | Portable Propane Heater
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vacuum or apply air pressure through the holes in the
pilot indicated by the arrows in Figure 5.
 Never use needles, wires, or similar cylin-
drical objects to clean the pilot to avoid damaging the
calibrated orifice that controls the gas flow.
9 Applyairpressure(max.30psi.)intoceramictileof
burnerassemblyandtheventuritube(ref.item#16)to
remove dust, lint or spider webs.
10 Reassemble main burner orifice holder onto the burner
assembly.
11 Reinstall burner assembly into the heater housing
12 Reinstall fuel line and check for leaks.
13 Install heater back cover.
14StoreinBuddyBag#32102(included)tohelpprevent
dust, insects and other contaminants from clogging the
pilot.

If Spark electrode does not produce spark.
CHECK
•Sparkelectrodebroken–replaceODS(OxygenDepletion
Sensor).
•Igniterwiremaynotbeattachedtosparkelectrode,
ground wire may not be attached to frame - attach.
•Igniterwiredamaged–replace.
•Piezoigniterdefective--replacecontrolvalve
If Spark electrode produces spark but pilot does not light.
CHECK
•Nogastoheater–installdisposablecylinderorconnect
hose and turn on valve at remote cylinder.
•“PILOT”positionnotproperlyaligned–turngascontrol
knobto“PILOT”positionanddepress.
•Pilotisblockedfromspiderwebordirt–cleanpilot,see
MAINTENANCE.
If Pilot flame does not stay lit when knob is released.
CHECK
•Controlknobin“PILOT”positionnotcompletely
depressed or held in long enough to purge air from lines.
•Pilotflamenotsurroundingthermocouple–cleanpilot,
see MAINTENANCE.
•PilotAssemblydefective–replace.
•Tipswitchwiresdisconnected–connect.
If Main burner does not ignite.
CHECK
•Mainburnerorificeisblocked–cleanburner,see
MAINTENANCE.
If Heater keeps shutting “OFF” during normal operation.
CHECK
•Pilotisblocked–cleanpilot,seeMAINTENANCE.
•Provideminimumfreshairopeningof9squareinches
(example3”x3”opening).
•Tipoverswitchactivatedfrombumpingheater.Re-light
•Regulatordefective-Replaceregulator.
•Internalcontamination-Replacecontrolvalveand
regulator.
•CallTechnicalServicesforadditionalinformation.
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Mr. Heater | Portable Propane Heater OperatingInstructionsandOwner’sManual
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

1. 32098 Handle(back)
2. 32099 Handle(front)
3. 32101 Back Panel Assy
4. 32103 Left Door
5. 32104 Accessory/Tool Door
6. 32105 Left Side Housing
7. 32106 Accessory Compartment Base
8. 78436 Leg Pad
9. 32134 Spare Bottle Brkt.
10. 32128 Bottom Panel
11. 32135 Regulator Brkt
12. 32034 Regulator Assy
13. 32108 Handle Base
14.32136 Knob,Red
15. 32109 Right Side Housing
16. 32110 Right Door
17. 32403 Tip Over Switch
18.32054 ControlValveAssy
19. 78422 Pilot Assy
20. 32052 Orifice Adapter
21. 32141 Orifice Assy.
22. 32111 Heat Shield Assy
23.32114 CeramicTileClip(2)
24. 32113 Burner Assy
25. 32112 Ceramic Tile
26. 32115 Reflector
27. 32137 ODS Bracket
28.32116 WireGuard
29. 32117 Front Panel
30.32146 TileGasket*
31.32102 MH12BBuddyBag*
32.737215ft.Hose*
*PartNotShown
  

 DESCRIPTION
F273701 5ft.PROPANEHOSEASSEMBLY
(Swivel1”-20MaleThrowaway
Cyl.Thd.XP.O.L.w/Handwheel)
(Recommended use with fuel
filter.)
F273702 12ft.PROPANEHOSEASSEMBLY
(Swivel1”-20MaleThrowaway
Cyl.Thd.XP.O.L.w/Handwheel)
F272702 12ft.PROPANEHOSEASSEMBLY
(Swivel1”-20MaleThrowaway
Cyl.Thd.XP.O.L.w/Handwheel)
(Recommended use with fuel
filter.)
F273699 FuelFilter(ReplaceAnnually)
F27370 4
10ft.BUDDY-SERIESHOSE
ASSEMBLY(Fuelfilternotrequired)
  
  
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OperatingInstructionsandOwner’sManualMr. Heater | Portable Propane Heater
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Mr. Heater, Inc. reserves the right to make changes at any time, without notice or
obligation, in colors, specifications, accessories, materials and models.
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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.MR.HEATERHOSESF273701,F273702ANDF272702ARESPECIFICALLY
DESIGNEDFORUSEWITHTHISHEATERALONGWITHF273699DISPOSABLEFUEL
FILTER(REPLACEANNUALLY).USEOFOTHERHOSESMAYCAUSETHEHEATERTO
BECOME INOPERABLE.

Accessories may be purchased at any Mr. Heater local dealer or
direct from the factory

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.
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OPERATING INSTRUCTIONS

MH12B
Model #
CSA 4.98
U.S.
MR.HEATER,INC.,4560W.160THST.,CLEVELAND,OHIO44135•800-251-0001
Mr.HeaterandPortableBuddyareregisteredtrademarksofEnercoGroup,Inc.
© 2009, Enerco/Mr. Heater. All rights reserved
 
MH12B EC-32055-13001001
PRODUCTREGISTRATION:Thankyouforyourpurchase.
Please log in to http://www.egiregistration.com to register your product.
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Mr. Heater | Portable Propane Heater OperatingInstructionsandOwner’sManual
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