MH125QFAV User Manual

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

MAINTENANCE AND STORAGE

1. Theheatershouldbeinspectedbeforeeachuse,andatleast

annuallybyaqualifiedperson.

2. Beforeeachuse,checkthesoft"O"ringsealatthebullnose

ofthePOLfitting.Ifthe"O"ringiscut,scuffed,orotherwise

damaged,replaceitwithpartnumber73786.

3. TurnoffthegasattheLP-gassupplycylinder(s)whenthe

heater is not in use.

4. Whentheheateristobestoredindoors,theconnection

betweentheLP-gassupplycylinder(s)andtheheatermust

bedisconnectedandthecylinder(s)removedfromtheheater

andstoredoutofdoorsandinaccordancewithChapter5of

thestandardforStorageandHandlingofLiquefiedPetroleum

GasesANSI/NFPA58andCSAB149.1,NaturalGasand

PropaneInstallationCode.

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

properly:

• Theflameiscontainedwithintheheater.

• Theflameisessentiallybluewithperhapssomeyellowtipping.

•

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.

Thepartslistsandwiringdiagramshowtheheaterasitwas

constructed. Do not use a heater which is different from that

shown.Inthisregard,useonlythehose,regulatorandcylinder

connectionfitting(calledaPOLfitting)suppliedwiththeheater.

IMPORTANTMatchthecolorstripeonthehangtagattachedto

the hose assembly with the color on the label located near the

propaneinletfittingontheheater.Donotusealternates.Forthis

heater,theregulatormustbesetasshownin"specifications".

Ifthereisanyuncertaintyabouttheregulatorsetting,haveit

checked.

Aheaterwhichisnotworkingrightmustberepaired,butonlybya

trained,experiencedserviceperson.

In-warrantyproductswillberepairedwithnochargeforeitherparts

or labor. Please include a brief statement indicating date, place of

purchase, the nature of the problem and proof of purchase.



Out-of-warrantyproductswillberepairedwithachargeforparts

and labor.

OPERATING INSTRUCTIONS

PREPARING FOR OPERATION

1. Checktheheaterforpossibleshippingdamage.Ifanyis

found, immediately notify the factory.

2. Followallofthe"Precautions".

3. ConnectthePOLfittingofhoseandregulatorassemblytothe

propanecylinderbyrotatingthePOLnutcounterclockwiseinto

thepropanecylinder'svalveoutletandsecurelytightenwitha

wrench.

4. Connectthehosetotheheaterbyrotatingthehosefitting

clockwise.

5. Securelytightenallgasconnections.

6. Openthecylinder'sgasvalveandcheckallgasconnections

withasoapandwatersolution.DONOTUSEAFLAME.

7. Connectpowercordtowell-grounded115V,60Hz,1Øsource

of power.

8. Whenusinganextensioncord,makecertainthatitisa3-wire

(grounded)cordofproperwiresize.

START

1. Beforeheaterignition,alwaysallowheaterfan(blower)torun

for20secondstopurgefuel.

2. Slowlyopenthemainvalveatpropanecylinder.

3. Depressthefuelvalvebuttontolighttheheater.

4. 

Aftertheheaterlights,keepthegasvalvebuttondepressed

for15seconds,

thenrelease,andtheheaterwillcontinue

tooperate.

5. Adjustburnratebysettingcontrolknobtodesiredlevel.

6. Nothermostatusablewiththeseunits.

STOP

1. Securelyclosevalveonthepropanecylinder.

2. Continuetooperateheateruntilallfuelinthehosehas

burned.

3. Unplugthepowercord.

RESTART AFTER SAFETY SHUTDOWN

1. Securelyclosevalveatpropanecylinder.Unplugheater.

2. Wait5minutes.

3. Restartfollowing"Start"procedure.

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User Manual - Page 6