111604-01BFor more information, visit www.desatech.comFor more information, visit www.desatech.com2525SPECIFICATIONSLMFP33NR LMFP33PRBtu (Variable) 23,000/33,000 23,000/33,000Type Gas Natural Gas Only Propane/LP OnlyIgnition Piezo PiezoPressure Manifold 3.5" W.C. 7.9" W.C.Inlet Gas Pressure (in. of water)Maximum 10.5" 14"Minimum* 5.5" 11"Shipping Weight 122 lbs. 122 lbs.* For input adjustmentWIRING DIAGRAMBlackRedWhiteRedREPLACEMENT PARTSNote: Use only original replacement parts. This will protect yourwarranty coverage for parts replaced under warranty.PARTS UNDER WARRANTYContact authorized dealers of this product. If they can’t supplyoriginal replacement part(s), call DESA Heating Products’ Techni-cal Service Department at 1-866-672-6040. When calling DESAHeating Products, have ready• your name and address• model and serial numbers of your fireplace• how fireplace was malfunctioning• type of gas used (propane/LP or natural gas)• purchase dateUsually, we will ask you to return the part to the factory.PARTS NOT UNDER WARRANTYContact authorized dealers of this product. If they can’t supply originalreplacement part(s), call DESA Heating Products at 1-866-672-6040 forreferral information. When calling DESA Heating Products, have ready• model number of your fireplace• the replacement part numberSERVICE HINTSWhen Gas Pressure Is Too Low• pilot will not stay lit• burner will have delayed ignition• fireplace will not produce specified heat• for propane/LP unit, propane/LP gas supply may be lowYou may feel your gas pressure is too low. If so, contact your localgas supplier.TECHNICAL SERVICEYou may have further questions about installation, operation, ortroubleshooting. If so, contact DESA Heating Products’ TechnicalService Department at 1-866-672-6040. When calling, please haveyour model and serial numbers of your heater ready.You can also visit DESA Heating Products’ technical services website at www.desatech.com.WIRING DIAGRAMSPECIFICATIONSTECHNICAL SERVICESERVICE HINTSREPLACEMENT PARTS