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Mr. Heater, Inc.| Kerosene Forced Air Heater Operating Instructions and Owner’s Manual
3
Model 50KR 75KTR 125KTR 175KTR 210KTR
Burn Rate: 50,000 Btu/hr (14.7 kW) 75,000 Btu/hr (22 kW) 125,000 Btu/hr (37 kW) 175,000 Btu/hr (51 kW) 210,000 Btu/hr (61.5 kW)
Fuel Rate: 0.37 gal/hr (1.4 L/hr) 0.55 gal/hr (2.1 L/hr) 0.96 gal./hr (3.5 L/hr) 1.3 gal/hr (5.0 L/hr) 1.6 gal/hr (6.0 L/hr)
Electrical Input: 115V, 60Hz, 3.5a 115V, 60Hz, 4a 115V, 60Hz, 5.5a 115V, 60Hz, 5.5a 115V, 60Hz, 5.5a
Line Protection: 10 amps 10 amps 20 amps 20 amps 20 amps
Min. Operating Voltage: 110V 110V 110V 110V 110V
Pressure Setting: 3.5 psig (24 kPa) 4.2 psig (29 kPa) 5.1 psig (38 kPa) 6.8 psig (40 kPa) 8.2 psig (58.6 kPa)
Max. Outlet Temperature: 1450
o
F (787
o
C) 1450
o
F (787
o
C) 1450
o
F (787
o
C) 1450
o
F (787
o
C) 1450
o
F (787
o
C)
Fuel Tank Capacity: 4 gallons (15.1 L) 6 gallons (22.7 L) 8.45 gallons (32 L) 13.5 gallons (51 L) 13.5 gallons (51 L)
Ignition: Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous Direct Spark, Continuous
Spark Generator: Igniter 13 kV, 10ma Igniter 13 kV, 10ma Igniter 13 kV, 10ma Igniter 13 kV, 10ma Igniter 13 kV, 10ma
Primary Safety Control: Solid State Control Solid State Control Solid State Control Solid State Control Solid State Control
Certication:
SPECIFICATIONS
OPERATING PRECAUTIONS
Thisisakerosene,direct-fired,forcedairheater.It’sintendeduse
isprimarilytemporaryheatingofbuildingsunderconstruction,
alterationorrepair.
Direct-Firedmeansthatallofthecombustionproductsenterthe
heatedspace.Eventhoughthisheateroperatesverycloseto100
percentcombustionefficiency,itstillproducessmallamounts
ofcarbonmonoxide.Carbonmonoxide(calledCO)istoxic.CO
canbuildupinaheatedspaceandfailuretoprovideadequate
ventilationcouldresultindeath.Thesymptomsofinadequate
ventilationare:
• headache
• dizziness
• burningeyesandnose
• nausea
• drymouthorsorethroat
BesuretofollowadviceaboutventilationintheSafetyPrecau-
tionssection.
ForcedAirmeansthatablowerorfanpushestheairthroughthe
heater.Propercombustiondependsuponthisairflow;therefore,
theheatermustnotberevised,modifiedoroperatedwithparts
removedormissing.Likewise,safetysystemsmustnotbecircum-
ventedormodifiedinordertooperatetheheater.
Whentheheateristobeoperatedinthepresenceofother
peopletheuserisresponsibleforproperlyacquaintingthose
presentwiththesafetyprecautionsandinstructions,andofthe
hazardsinvolved.
SAFETY PRECAUTIONS
1. RecommendedforusewithNo.1-Kkerosenefuel.Factorytested
forusewithNo.2-Kkerosene,No.1orNo.2Diesel,No.1orNo.2
fueloilorJP8JetAfuelandthesefuelsmaybeusedaswell.Never
usegasoline,biodiesel,oildrainedfromcrankcases,naphtha,
paintthinners,alcoholoranyotherhighlyflammablefuels.
2. Checktheheaterthoroughlyfordamage.DONOToperatea
damagedheater.
3. DONOTmodifytheheateroroperateaheaterwhichhasbeen
modifiedfromitsoriginalcondition.
4. Forindooruseonly.Neveruseinareasnormallyforhabitation.
Notforusewhereexposedtoweather.
5. Useinwellventilatedareas,provideatleast2sq.ft.(0.19
sq.m.)ofopeningnearthefloorand2sq.ft.(0.19sq.m.)
neartheceilingdirectlytooutdoors.Increaseairopeningsas
markedforeachadditionalheater.
6. Alwayskeepcombustibles,likepaperandwoodatleast8
ft.(2.4m)fromtheheateroutletand3ft.(1.0m)from
thetop,sidesandinlet.Locate10ft.(3.0m)fromcanvas
orplasticcoveringsandsecurethemtopreventflapping
movement.
7. Caution:Duetothehighsurfaceandexhausttemperatures,
adultsandchildrenmustobserveclearancestoavoidburns
orclothingignition.DoNotTouch.Keepchildren,clothing,
andcombustibleaway.
8. Installtheheatersuchthatitisnotdirectlyexposedtowater
spray,rainand/orwater.
9. Neveruseinareasnormallyforhabitationand/orwhere
childrenmaybepresent.
10. Operateonlyonastable,levelsurface.(MH50KR&
MH75KTR–Seewoodfloorwarning).
11. Donotusewithductwork.Donotrestrictinletorexit.
12. Useonlywithelectricalpowerspecified.Theelectrical
connectionandgroundingmustcomplywithNational
ElectricalCode–ANSI/NFPA70(USA)andCSAC22.1
CanadianElectricalCode,Part1(Canada).
13. Useonlyaproperlygrounded3-prongreceptacleor
extensioncord.
14. Donotmove,handle,orservicewhilehotorinoperation.
15. Useonlyinaccordancewithlocal,state(provincial)or
nationalrequirements,ordinancesandcodes.
OPERATING INSTRUCTIONS
UNPACKING
1. Removeheaterfromcarton.
2. Removeallprotectivematerialwhichmayhavebeenapplied
totheheaterforshipment.
3. Checktheheaterforpossibleshippingdamage.Ifany
damageisfoundimmediatelycontactthemanufacturerat
800-251-0001.
ASSEMBLY
(For125,000,175,000and210,000BTU/hrmodels
only,seefigure1,page8.)
Wheelsandhandlesarefoundintheshippingcartonalongwith
mountinghardware.Thewheels,axleandmountinghardware
areinapackage.Toolsrequiredarea5/16”nutdriver,3/8”open
oradjustablewrenchandstandardpliers.
1. Assemblethewheelsontothewheelsupportasshown.
2. Installoneofthecotterpinsintotheholeononeendof
axle.
CAUTION: CSA certified for use with only No. 1-K kerosene fuel.
Factory Tested: Kerosene, Diesel #1 and #2, Fuel Oil #1 and #2, JP8 (Jet A Fuel)
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