www.desatech.com 25113183-01BSPECIFICATIONSCDR3924PT CDR3924NTBtu (Variable) 11,000/39,000 11,000/39,000Type Gas Propane/LP NaturalIgnition Electronic ElectronicManifold Pressure 8.0" W.C. 3.6" W.C.Inlet Gas Pressure (in. of water)Maximum 14" 10.5"Minimum* 11" 5"Shipping Weight 30 lbs. 30 lbs.* For purpose of 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 canʼt supply original replacement part(s),call DESA Heating Products' Technical ServiceDepartment at 1-866-672-6040.When calling DESA Heating Products, have ready• your name• your 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 theycanʼt supply original replacement part(s), callDESA Heating Products at 1-866-672-6040 forreferral information.When calling DESA Heating Products, have ready• model number of your heater• the replacement part numberSERVICE 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/LP gassupplier.ACCESSORIESNOTICE: All accessories maynot be available for all fireplacemodels.Purchase these heater accessories from your localdealer. If they can not supply these accessories,call DESA Heating Products at 1-866-672-6040for referral information. You can also write to theaddress listed on the back page of this manual.EQUIPMENT SHUTOFF VALVEGA5010For all models. Equipment shutoff valve with1/8" NPT tap. Fits 1/2" NPT pipe.FIREPLACE HOODBlack - GA6050Brass - GA6052Antique Brass - GA6053For all models. Helps deflect heat away frommantel or wall above fireplace. Fits openings 28"to 48" wide.CLEANING KIT - CCK/GCK(Not Shown)For all models. Your vent-free gas appliance re-quires regular cleaning and maintenance to preventperformance problems. This kit gives you the toolsand instructions to make it easy to clean all criticalareas of your appliance.INFORMATION VIDEO - 108917-01(Not Shown)For all models. A care and maintenance video isavailable by calling 1-866-672-6040. You may alsoemail your request toproductsupport@desaint.com.LAVA ROCK - GA6060 (Not Shown)For all models. Order when additional rock isdesired. (3 lb. bag)