Desa LDL3924NR Owner's Operation And Installation Manual

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Desa LDL3924NR Owner's Operation And Installation Manual Manual pdf 10 page image

111515-01AFor more information, visit www.desatech.comFor more information, visit www.desatech.com10Figure 11 - Attaching Flexible Gas Hose to HeaterFlexible GasHose (if allowedby local codes)FittingINSTALLING DAMPER CLAMP ACCESSORYFOR VENTED OPERATIONNote: When used as a vented heater, appliance must be installedonly in a solid-fuel burning fireplace with a working flue andconstructed of noncombustible material.You may use this heater as a vented product. There are three reasonsfor operating your heater in the vented mode.1. The fireplace does not meet the clearance to combustibles re-quirements for vent-free operation.2. State or local codes do not permit vent-free operation.3. You prefer vented operation.If reasons number 1 or 2 above apply to you, you must permanentlyopen chimney flue damper. You must install the damper clampaccessory (to order, see Accessories, page 27). This will insure ventedoperation (see Figure 10). The damper clamp will keep damper open.Installation instructions are included with clamp accessory.See chart below for minimum permanent flue opening you mustprovide. Attach damper clamp so the minimum permanent flueopening will be maintained at all times.Area of Various StandardRound FluesDiameter (ins.) Area (sq. ins.)5" 20 sq. inches6" 29 sq. inches7" 39 sq. inches8" 51 sq. inchesChimney Minimum PermanentHeight (ft.) Flue Opening (sq. ins.)6' to 15' 39 sq. inches15' to 30' 29 sq. inchesINSTALLATIONContinuedINSTALLING HEATER BASE ASSEMBLYWARNING: You must secure this heater to fire-place floor. If not, heater will move when you adjustcontrols. Moving heater may cause a gas leak or logmisplacement.WARNING: If installing in a sunken fireplace, spe-cial care is needed. You must raise the fireplace floor toallow access to heater control panel. This will insureadequate air flow and guard against sooting and con-trols being damaged. Raise fireplace floor with noncom-bustible material. Make sure material is secure.CAUTION: Do not pick up heater base assembly byburners. This could damage heater. Only handle baseassembly by grates.IMPORTANT: Make sure the heater burners are level. If heater isnot level, heater will not work properly.Installation Items Needed• hardware package (provided with heater)• approved flexible gas hose and fittings (not provided) (if allowedby local codes)• sealant (resistant to propane/LP gas, not provided)• electric drill with 3/16" drill bit (metal or masonry as applicable)• flathead screwdriver• pipe wrench1. Apply pipe joint sealant lightly to male threads of gas fitting(not provided). Connect approved flexible gas hose to gas con-trol fitting in heater (see Figure 11).IMPORTANT: Hold gasfitting with wrench when connecting flexible gas hose.2. Locate two masonry screws in hardware package.3. Place heater base in fireplace.4. Place logs in their proper position on heater base (see InstallingLogs, page 14).Figure 10 - Attaching Damper ClampDamperDamper ClampDamperManufactured FireplaceMasonry FireplaceDamper ClampDamperINSTALLATIONInstalling Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly