MH175KTR User Manual

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Mr. Heater, Inc. | Kerosene Forced Air Heater Operating Instructions and Owner’s Manual

RESTART AFTER SAFETY SHUTDOWN(MH50KR, MH75KTR,

MH125KTR, MH175KTR & MH210KTR) See page 7

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.

PressureAdjustmentScrew(locatedattherearoftheheater)

ADJUSTMENTPROCEDURE:

1. Fillfueltank.

2. Startheater.

3. 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.

4. 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”.

5. 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.

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.

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 ex-

tended 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.

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.

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User Manual - Page 4