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If so, you must always run heater with chimney flue damper open. If running heater with damper open, noncombustible material above fireplace opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation,page 10. Minimum Noncombustible Material Clearances If Not Using Mantel Note:If using a mantel, proceed to If Using Mantel. If not using a mantel, follow the information below. You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have noncombustible material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" models only). See Figure 6 for minimum clearances. IMPORTANT:If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 10. If Using Mantel You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have noncombustible material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" models only). Even if noncombustible material is more than 12", you may need the hood accessory to deflect heat away from your mantel shelf. See Figure 6 and Figures 7 and 8 on page 9 for minimum clearances. IMPORTANT:If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 10. Less than 8" Noncombustible material must be extended to at least 8". See Between 8" and 12", above. If you cannot extend material, you must operate heater with flue damper open. Heat Resistant Material (A) Figure 6 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace For more information, visit more information, visit 111160-01B INSTALLATION Mantel Clearances Floor Clearances 9 INSTALLATION Continued MANTEL CLEARANCES In addition to meeting noncombustible material clearances, you must also meet required clearances between fireplace opening and mantel shelf. If you do not meet the clearances in Figure 7, you will need a hood. Determining Minimum Mantel Clearance If you meet minimum clearance between mantel shelf and top of fireplace opening, a hood is not required (see Figure 7). Determining Minimum Mantel Clearance When Using a Hood If minimum clearances in Figure 7 are not met, you must have a hood. When using a hood there are still certain minimum mantel clearances required. Follow minimum clearances shown in Figure 8 when using hood. Figure 7 - Minimum Mantel Clearances Without Using Hood Minimum Non- Combustible Material Minimum Non- Combustible Material Height Distances to Underside of Mantel Top of Fireplace Opening Underside of Mantel Shelf Mantel Shelf 12" 8" (A) 18" 8" 20" 14" 22" 17" 24" 20" All minimum distances are in inches Log Set 24"/30" Models 18" Model 2 1/2" 6" 8" 10" Mantel Shelf Figure 8 - Minimum Mantel Clearances When Using Hood Minimum Non- Combustible Material 8" Min. 12" 15" 18" All minimum distances are in inches Log Set 20" 2 1/2" 6" 8" 10" 12" Distances to Underside of Mantel Hood Top of Fireplace Opening Underside of Mantel Shelf (GA6050, GA6052, and GA6053) All Models FLOOR CLEARANCES A. If installing appliance on the floor level, you must maintain the minimum distance of 14" to combustibles (see Figure 9). B. If combustible materials are less than 14" to the fireplace, you must install appliance at least 5" above the combustible flooring (see Figure 10). Combustible Material 14" Min. Noncombustible Material Figure 9 - Minimum Fireplace Clearances if Installed at Floor Level Hearth Combustible Material 5" Min. Figure 10 - Minimum Fireplace Clearances Above Combustible Flooring NOTICE: Surface temperatures of adjacent walls and mantels become hot during operation. Walls and mantels above the firebox may become hot to the touch. If installed properly, these temperatures meet the requirement of the national product standard. Follow all minimum clearances shown in this manual. NOTICE: If your installation does not meet the minimum clearances shown, you must do one of the following: • operate the logs only with the flue damper open • raise the mantel to an acceptable height • remove the mantel For more information, visit more information, visit 111160-01B 10 10 INSTALLATION Installing Damper Clamp Accessory for Vented Operation Installing Heater Base Assembly INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION Note:When used as a vented heater, appliance m...

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