Use and Care Manual
3
Installation Instructions and Owner’s Manual
Gas Fired Infrared Space Heater
1. GENERAL INFORMATION
a. Yourheatercomesfullyassembledandistestedatthefactory
forpropergasandinputasstatedonthenameplate.
b. Beforeproceedingwiththeinstallation,besuretoinspectfor
damages.Freightcompanymustbenotifiedofanydamages
andrequestthattheinspectionbemade.MR.HEATERwill
sendreplacementpartsfordamagedpartsonlyafterreceiving
asignedinspectionreporttoprovetheliabilityofthefreight
company.
c. Donotattempttooperateheaterwithanyothergasthanthat
indicatedontheheaternameplate.
d. Theinstallationofheatermustconformwithlocalbuilding
codes,orinabsenceoflocalcodes,withtheNationalFuelGas
Code,ANSIZ223.1a/NFPA54,andStandardforStorageand
HandlingofLiquefiedPetroleumGases,ANSI/NFPA58.
e. CanadianinstallationsmustcomplywithCAN/CGA-B149.1.2
GasCodewhichcanbepurchasedfromtheCSA(Canadian
StandardsAssociation)website@http://www.csa.caorby
calling1-800-463-6727.
f. Plugged1/8”N.P.T.TestGageConnectionislocatedonthe
HeaterGasValveora¼1/4”N.P.T.Connectionislocatedonthe
outsideoftheCastVenturi.
g. Forindoorinstallationonly.Notforuseinresidentialdwellings.
NOTE:Aresidentialdwellingisadomicileintendedforuseby
oneormorepersonsandthatincludesoneormoreareas,
suchasthoseusedforcooking,eating,living,sleeping,ora
sanitaryfacility.Aresidentialdwellingdoesnotincludeanat-
tachedanddetachedgarage,workshop,oroutdoors.
For additional information, contact;
MR.HEATERCORPORATION
CUSTOMERSERVICEDEPT.
CLEVELAND,OHIO
1-800-251-0001
*ThefollowingextraNFPAmanualsarehelpfulwheninstalling
MR.HEATERinalocationnotanticipatedinthismanual:
Number Related Subject
NFPA88 ClearancestoCombustibleSurfaces
NFPA409 ClearancestoCombustibleSurfaces
DONOTEXCEED½PSIINLETPRESSURETOHEATER
2. CLEARANCES
Minimumclearancestocombustibles(RefertoTable3)..Also
betweencontrolendofheaterforservicingandminimumontop
andsidesforventilationandcombustionairsupply.
Aminimumclearanceof8’abovefloorforpublicgaragesin
accordancewithANSI/NFPANo.409mostrecentedition,orTable
3;thelargerdimensionofANSI/NFPANo.409orTable3istobe
used.
*WhenselectinginstallationlocationsforMR.HEATERensurethat
theopeningofanyexteriororinteriordoorsorwindowswillnot
violateclearancesorcontactanyheatercomponents.
Table 1. BTU Ratings and Supply Pressures
MODEL BTU/HR. RATING GAS SUPPLY PRESSURE (W.C.) ORIFICE
NO. GAS MIN. MAX. MANIFOLD SIZE
NATURAL PROPANE NAT. L.P. NAT. L.P. NAT. L.P. NAT. L.P.
MH/HS40NG 40,000 — 6.8” W.C. — 14” W.C. — 5.8” — 37 —
MH/HS40LP — 40,000 — 11” W.C. — 14” W.C. — 10” — 50
Table 2. Heater Dimensions and Orice Sizes
MODEL OPERATING ORIFICE SIZE INPUT SIZE
NO. PRESSURE BURNER PILOT BTU/H WIDTH LENGTH HEIGHT WEIGHT
MH/HS40NG 6.8”w.c. 37 .012 40.000 19-1/4” 30-1/4” 12” 25 lbs.
MH/HS40LP 10”w.c. 50 .009 40,000 19-1/4” 30-1/4” 12” 25 lbs.
Table 3. Installation, Ventilation and Mounting Information
BTU/HR. RATING NORMAL
MODEL GAS MOUNTING CLEARANCES TO COMBUSTIBLE SURFACES
NO. NAT. L.P. POSITION TOP SIDES BACK BELOW
MH/HS40NG 40,000 — HORIZ-30˚ 34” 30” 30” 68”
MH/HS40LP — 40,000 HORIZ-30˚ 34” 30” 30” 68”