MH85QFAV User Manual

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Operating Instructions and Owner’s ManualMr. Heater, Inc.| Forced Air Propane Construction Heater

ODOR FADE WARNING

WARNING

Asphyxiation Hazard

 •Donotusethisheaterforheatinghumanliving

 quarters.

 •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 data plate, 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.Symptomofcarbonmonoxidepoisoning

 canincludeheadaches,dizzinessanddifficulty

in breathing.

FUEL GAS ODOR

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) 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 disconnect

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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)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.

•The odorant in propane (LP) gas and natural 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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.

 •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!

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User Manual - Page 5