MH70KFR OPERATING INSTRUCTIONS AND OWNER’S MANUAL

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Mr. Heater, Inc. | Kerosene Fired Radiant Heater Operating Instructions and Owner’s Manual

integrated3minutecoolingcycledesignedtoprolongthelife

ofinternalcomponentsandtoreducesurfacetemperatures

thattendtoincreaseshortlyaftershutdown.Pleaseallowthis

cycletocompletebeforeremovingpowerfromtheheater.

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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

filterinplace.ContactMr.Heaterforreplacementparts

500 HOUR SCHEDULE

1. REMOVEDUST.Cleanheatertwiceaseason(moreoften

underdustyconditions).Removeaccumulateddustfromthe

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.

2. CADCELL.Cleantheglassportionofthecadcellwithasoft

drycloth.

3. NOZZLE.Accumulationofdirtandcarbonfromthe

combustionprocesscaneventuallyfillupthepassagesin

thenozzle,resultinginreductionoffuelandairflow.Ifthis

occurs,replacethefuelnozzle.ContactMr.Heaterforservice

parts

4. 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. 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.

2. FUELLINES.Ifthefuellinesareremovedduringcleaning,be

sureallconnectionsaretightbeforeoperatingunit.Ifanydry

rottingorcrackinginthelinesisobservedreplacewith1/4”

idfuellineorcontactMr.Heaterforserviceparts.

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.

* 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.

3. Nextinstalltheheatshields.Theseareattachedcenteredat

the12o’clockand6o’clockpositions.Thelargeronewillbe

installedatthebottom.Thesearefastenedintoplaceusing

thescrewsholdingtheradiantheatingsurfaceplateinplace.

Simplyloosenonlythenecessaryscrewsattachtheshields

andtightenthescrewsbackintoplace.

MH70KTFR

1. FirstLocatethehardwarepackage.Youwillfindfourlong

screwsforthebasetubing,alongwith4nutsandwashers.

Placetheheateronthebasetubingasshownonthefrontof

thismanualorinthepartsdiagram.Usethelongscrewsand

matchingfastenerstoattachthebasetothefueltank.

2. Inthehardwarepackageyouwillalsofindtwoshorter

washerheadedscrewsforattachingthehandletothetopof

theheater.UsingaPhillipsheadedscrewdriver,attachthe

handletothetopoftheheaterasshownonthefrontofthis

manualorinthepartsdiagram.

3. Finallyinstallthelowerheatshield.Theincludedheatshield

willbelocatedcenteredatthe6o’clockposition.Onlytwo

screwsareusedtoholdtheshieldinplace.Themiddlehole

isonlyforthelocatingpinthatreceivesnofastener.Simply

removethescrewsthatlineupwiththeholesontheheat

shieldwhenonthecenteringpin.Puttheheatshieldinto

placeandre-attachthescrews.

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.

Refertothespecificationstableinthismanualfordistances.

HEATER START UP

1. Locatethepowerplugnearthecontrolsoftheheater.Using

aproperlysizedandgroundedextensioncordpluginthe

unit.

2. WhenpowerreachestheheatertheRedlightonthebackof

theheaterwillilluminate.

3. TurnthepowerswitchtotheONposition.TheLEDreadout

willshowtheapproximateroomtemperature.Whenyouturn

thethermostatknobclockwisetheLEDreadoutwillchange

toshowthesettemperature.Whenthatnumberishigher

thantheroomtemperaturetheheaterwillbeginissequence

ofoperation.

4. Oncetheheaterbeginstorunitwillcycleonandoffbased

onthethermostatsetting.Ifforanyreasonyourheaterdoes

notrunproperlyrefertotheDiagnosticandtroubleshooting

sectioninthismanualorcontactthemanufacturerwithone

ofthemethodslistedonthebackpageofthismanual.

HEATER SHUT DOWN

1. Toturnoffeitherturnthethermostatknobtoatemperature

lowerthantheroomtemperatureormovethepowerswitch

totheoffposition.Theseheatersareengineeredwithan

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OPERATING INSTRUCTIONS AND OWNER’S MANUAL - Page 4