www.desatech.com 122136-01C24SPECIFICATIONSModels HL18P, VSB18P• Rating (Variable): 16,000/23,000 Btu/Hr• Gas Type: Propane/LP• Ignition: Piezo• Manifold Pressure: 8.0" W.C.• Inlet Gas Pressure (in. of water):Maximum 14" W.C., Minimum 11"* W.C.• Shipping Weight: 27 lbs.Models HL18N, VSB18N• Rating (Variable): 17,000/24,000 Btu/Hr• Gas Type: Natural• Ignition: Piezo• Manifold Pressure: 3.0" W.C.• Inlet Gas Pressure (in. of water):Maximum 10.5" W.C., Minimum 5"* W.C.• Shipping Weight: 27 lbs.*For the purpose of input adjustment.Models HL24P, VSB24P• Rating (Variable): 16,000/26,000 Btu/Hr• Gas Type: Propane/LP• Ignition: Piezo• Manifold Pressure: 8.0" W.C.• Inlet Gas Pressure (in. of water):Maximum 14" W.C., Minimum 11"* W.C.• Shipping Weight: 27 lbs.Models HL24N, VSB24N• Rating (Variable): 17,000/26,000 Btu/Hr• Gas Type: Natural• Ignition: Piezo• Manifold Pressure: 3.0" W.C.• Inlet Gas Pressure (in. of water):Maximum 10.5" W.C., Minimum 5"* W.C.• Shipping Weight: 27 lbs.*For the purpose of input adjustment.REPLACEMENT PARTSNote: Use only original replacement parts.This will protect your warranty coverage forparts replaced under warranty.pARTS UNDER WARRANTYContact authorized dealers of this product. Ifthey can’t supply original replacement part(s),call DESA Heating, LLC at 1-866-672-6040.When calling DESA Heating, LLC, haveready• your name• your address• model and serial numbers of your heater• how heater was malfunctioning• type of gas used (propane/LP or naturalgas)• purchase dateUsually, we will ask you to return the part tothe factory.pARTS NOT UNDER WARRANTYContact authorized dealers of this product. Ifthey can’t supply original replacement part(s),either contact your nearest Parts Central(see page 29) or call DESA Heating, LLC at1-866-672-6040 for referral information. A listof authorized dealers can be found by visitingwww.desatech.com.When calling DESA Heating, LLC, haveready• model number of your heater• the replacement part numberTECHNICAL SERVICEYou may have further questions about instal-lation, operation or troubleshooting. If so, con-tact DESA Heating, LLC at 1-866-672-6040.When calling please have your model andserial numbers of your heater ready.You can also visit DESA Heating, LLC’s website 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 too low. Ifso, contact your local natural or propane/LPgas supplier.