SPECIFICATIONS
Model:
Rating:BTU
Kilowatts
FuelConsumption:
GasSupplyPressure
(toregulator):
GasSupplyPressure
(Regulatorout):
ElectricalInput
HighTemperatureControl:
Ignition
**Eachheaterispackagedwitha10'longhosewithregulator**
DIMENSIONS
Model:
Length(in)
MH60QFAV
19.75
MH85QFAV
18.50
MH125QFAV
21.25
OPERATING PRECAUTIONS
Thisisapropane,direct-fired,forcedairheater.Itsintendeduse
is primarily temporary heating of buildings under construction,
alteration, or repair.
Propaneisheavierthanair.Ifpropaneleaksfromaconnectionor
fitting,itsinkstothefloor,collectingtherewiththesurrounding
air,formingapotentiallyexplosivemixture.Obviously,propane
leaksshouldbeavoided,sosetupthepropanesupplywith
utmostcare.ReadenclosedOdorFadeandPropaneSheetfor
additionalinformationaboutdetectingpropaneleaks.Leakcheck
new connections or reconnections with a soap and water solution
andfollowallconnectioninstructionsherein.Also,askyour
propanedealerforadviceonthepropaneapplicationandsupply
installationandaskhimtocheckitifthereareanyquestions.
Thisheaterwasdesignedandcertifiedforuseasaconstruction
heaterinaccordancewithANSIZ83.7/CGA2.14.Checkwith
yourlocalfiresafetyauthorityifyouhaveanyquestionsabout
yourapplications.Otherstandardsgoverntheuseoffuelgases
andheatproducingproductsinspecificapplications.Yourlocal
authoritycanadviseyouaboutthese.
Direct-Firedmeansthatallofthecombustionproductsenterthe
heatedspace.Eventhoughthisheateroperatesverycloseto100
percent combustion efficiency, it still produces small amounts of
carbonmonoxide.Carbonmonoxide(calledCO)istoxic.Wecan
toleratesmallamountsbutnotalot.COcanbuildupinaheated
spaceandfailuretoprovideadequateventilationcouldresultin
death.
Mr. Heater, Inc.| Forced Air Propane Construction Heater
MH60QFAV
30,000-60,000Btu/Hr
(8.8-17.5kW)
1.4-2.8lbs/hr
(0.64-1.27kg/hr)
Max.BottlePressure
Min.20psi(137.kPa
20psi(137.9kPa)
1 1 5V,60Hz,1Ø,2A
Min.OperatingVoltage:100V
230Watts(W)
240°F(1 16°C)
AutoSpark/ManualValve
Width(in)
1 1.50
1 1.50
1 1.75
CAUTION: For use with Propane Only
NOT FOR USE WITH DUCT WORK
MH85QFAV
50,000-85,000Btu/Hr
(14.6–25.0kW)
2.3–3.9lbs/hr
(1.04–1.77kg/hr)
Max.BottlePressure
Min.20psi(137.kPa
20psi(137.9kPa)
1 1 5V,60Hz,1Ø,2A
Min.OperatingVoltage:100V
230Watts(W)
240°F(1 16°C)
AutoSpark/ManualValve
Height(in)
14.25
14.00
16.00
Thesymptomsofinadequateventilationare:
• headache
• dizziness
• burningeyesandnose
• nausea
• drymouthorsorethroat
So,besuretofollowadviceaboutventilationintheseoperating
instructions.
ForcedAirmeansthatablowerorfanpushestheairthroughthe
heater. Proper combustion depends upon this air flow;
therefore, theheatermustnotberevised,modified,or
operatedwithpartsremovedormissing.Likewise,safety
systemsmustnotbecircumventedormodifiedinorderto
operatetheheater.
Whentheheateristobeoperatedinthepresenceofother
people, theuserisresponsibleforproperlyacquaintingthose
presentwiththesafetyprecautions,instructions,andofthe
hazardsinvolved.
3
Operating Instructions and Owner's Manual
MH125QFAV
75,000-125,000Btu/Hr
(21.9--36.6kW)
3.5--5.8lbs/hr
(1.56--2.63kg/hr)
Max.BottlePressure
Min.20psi(137.kPa
20psi(137.9kPa)
1 1 5V,60Hz,1Ø,2A
Min.OperatingVoltage:100V
230Watts(W)
240°F(1 16°C)
AutoSpark/ManualValve
Weight(LBS)
19.00
19.00
22.15