Desa HRB3624 Owner's Operation And Installation Manual

Desa HRB3624 Owner's Operation And Installation Manual Manual pdf 10 page image

www.desatech.com 119426-01A10INSTALLATIONContinuedNOTICE: Manual control heatersmay be used as a vented product.If so, you must always run heaterwith chimney flue damper open.If running heater with damperopen, noncombustible materialabove fireplace opening is notneeded. Go to Installing DamperClamp Accessory for VentedOperation, page 12.Minimum Noncombustible MaterialClearancesIf Not Using MantelNote: If using a mantel proceed to If Using Mantel.If not using a mantel, follow the information onthis page.You must have noncombustible material(s) abovethe fireplace opening. Noncombustible materials(such as slate, marble, tile, etc.) must be at least1/2" thick. With sheet metal, you must have non-combustible material behind it. Noncombustiblematerial must extend at least 8" up (for all models).If noncombustible material is less than 12", youmust install the fireplace hood accessory (24" and30" Models Only). See Figure 5 for minimumclearances.If Using MantelYou must have noncombustible material(s) abovethe fireplace opening. Noncombustible materials(such as slate, marble, tile, etc.) must be at least1/2" thick. With sheet metal, you must have non-combustible material behind it. Noncombustiblematerial must extend at least 8" up (for all models).If noncombustible material is less than 12", youmust install the fireplace hood accessory (24"and 30" Models Only). Even if noncombustiblematerial is more than 12", you may need the hoodaccessory to deflect heat away from your mantelshelf. See Figure 5 and Figures 6 and 7, page 9,for minimum clearances.IMPORTANT: If you cannot meet these minimumclearances, you must operate heater with chimneyflue damper open. Go to Installing Damper ClampAccessory for Vented Operation, page 12.Heat ResistantMaterial(A)Figure 5 - Heat Resistant Material (Slate,Marble, Tile, etc.) Above FireplaceNoncombustibleMaterial Requirements forDistance (A) Safe Installation12" or more Noncombustible mate-rial OK.Between 8" and 12" 24" or 30" Models:Install fireplace hoodaccessory (GA6050,GA6052 or GA6053 seeAccessories, page 42).18" Model: Noncombus-tible material OK.Less than 8" Noncombustible mate-rial must be extended toat least 8". See Between8" and 12", above. If youcannot extend material,you must operate heaterwith flue damper open.MANTEL CLEARANCESIn addition to meeting noncombustible materialclearances, you must also meet required clearancesbetween fireplace opening and mantel shelf. Ifyou do not meet the clearances listed below, youwill need a hood.Determining Minimum Mantel ClearanceIf you meet minimum clearance between mantelshelf and top of fireplace opening, a hood is notrequired (see Figure 6, page 11).Determining Minimum Mantel ClearanceWhen Using a HoodIf minimum clearances in Figure 6, page 11, arenot met, you must have a hood. When using a hoodthere are still certain minimum mantel clearancesrequired. Follow minimum clearances shown inFigure 7, page 11, when using hood.