www.desatech.com113195-01C 9SpEciFicATiONSvI33NRB• Rating: 22,000/30,000 Btu• Gas Type: Natural Gas• Ignition: Piezo• Pressure Manifold: 3.5" w.c.• Inlet Gas Pressure (inches of water):Max. - 10.5", Minimum* - 5"VI33PRB• Rating: 22,000/30,000 Btu• Gas Type: Propane/LP Gas• Ignition: Piezo• Pressure Manifold: 8.0" w.c.• Inlet Gas Pressure (inches of water):Max. - 14", Minimum* - 11"* For input adjustmentREplAcEMENT pARTSNote: Use only original replacement parts. Thiswill protect your warranty coverage for partsreplaced under warranty.PARTS UNDER WARRANTYContact authorized dealers of this product. Ifthey can’t supply original replacement part(s),call DESA Heating Products’ Technical ServiceDepartment at 1-866-672-6040. When callingDESA Heating Products, have ready• your name and address• model and serial numbers of your heater• how heater was malfunctioning• type of gas used (propane/LP or natural gas)• purchase dateUsually, we will ask you to return the part to thefactory.PARTS NOT UNDER WARRANTYContact authorized dealers of this product. If theycan’t supply original replacement part(s), callDESA Heating Products at 1-866-672-6040 forreferral information. When calling DESA HeatingProducts, have ready• model number of your heater• the replacement part numberTEchNicAl SERVicEYou may have further questions about installation,operation or troubleshooting. If so, contact DESAHeating Products’ Technical Service Departmentat 1-866-672-6040. When calling please have yourmodel and serial numbers of your heater ready.You can also visit DESA Heating Products’ techni-cal services web site at www.desatech.com.SERVicE hiNTSWhen Gas Pressure Is Too Low• pilot will not stay lit• burners will have delayed ignition• heater will not produce specified heat• propane/LP gas supply may be lowYou may feel your gas pressure is low. If so,contact your local natural or propane/LP gassupplier.