MH85QFAV User Manual

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

SPECIFICATIONS

Model: MH60QFAV MH85QFAV MH125QFAV

Rating:BTU 30,000-60,000Btu/Hr 50,000-85,000Btu/Hr 75,000-125,000Btu/Hr

Kilowatts (8.8-17.5kW) (14.6–25.0kW) (21.9--36.6kW)

FuelConsumption: 1.4-2.8lbs/hr 2.3–3.9lbs/hr 3.5--5.8lbs/hr

(0.64-1.27kg/hr) (1.04–1.77kg/hr) (1.56--2.63kg/hr)

GasSupplyPressure

(toregulator):

Max.BottlePressure

Min.20psi(137.kPa

Max.BottlePressure

Min.20psi(137.kPa

Max.BottlePressure

Min.20psi(137.kPa

GasSupplyPressure

(Regulatorout):

20psi(137.9kPa) 20psi(137.9kPa) 20psi(137.9kPa)

ElectricalInput

115V,60Hz,1Ø,2A

Min.OperatingVoltage:100V

115V,60Hz,1Ø,2A

Min.OperatingVoltage:100V

115V,60Hz,1Ø,2A

Min.OperatingVoltage:100V

230Watts(W) 230Watts(W) 230Watts(W)

HighTemperatureControl: 240°F(116°C) 240°F(116°C) 240°F(116°C)

Ignition AutoSpark/ManualValve AutoSpark/ManualValve AutoSpark/ManualValve

**Eachheaterispackagedwitha10'longhosewithregulator**

OPERATING PRECAUTIONS

Thisisapropane,direct-fired,forcedairheater.It'sintendeduse

is primarily temporary heating of buildings under construction,

alteration or repair.

Propaneisheavierthanair.Ifpropaneleaksfromaconnectionor

fitting,itsinkstothefloor,collectingtherewiththesurrounding

air,formingapotentiallyexplosivemixture.Obviously,propane

leaksshouldbeavoided,sosetupthepropanesupplywith

utmostcare.ReadenclosedOdorFadeandPropaneSheetfor

additionalinformationaboutdetectingpropaneleaks.Leakcheck

new connections or reconnections with a soap and water solution

andfollowallconnectioninstructionsherein.Also,askyour

propanedealerforadviceonthepropaneapplicationandsupply

installationandaskhimtocheckitifthereareanyquestions.

Thisheaterwasdesignedandcertifiedforuseasaconstruction

heaterinaccordancewithANSIZ83.7/CGA2.14.Checkwith

yourlocalfiresafetyauthorityifyouhaveanyquestionsabout

yourapplications.Otherstandardsgoverntheuseoffuelgases

andheatproducingproductsinspecificapplications.Yourlocal

authoritycanadviseyouaboutthese.

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.Wecan

toleratesmallamountsbutnotalot.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

So,besuretofollowadviceaboutventilationintheseoperating

instructions.

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

circumvented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.

CAUTION: For use with Propane Only

NOT FOR USE WITH DUCT WORK

Model: Length(in) Width(in) Height(in) Weight(LBS)

MH60QFAV 19.75 11. 5 0 14.25 19.00

MH85QFAV 18.50 11. 5 0 14.00 19.00

MH125QFAV 21. 25 11. 7 5 16.00 22.15

DIMENSIONS

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User Manual - Page 3