INSTALLATION
Continued
Minimum Non-combustible Material Clearances
If Not Using Mantel
You must have non-combustible material(s) above the fireplace opening. Non-combus- tible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have non-combus- tible material behind it. Non-combustible material must extend at least 8" up (for all models). If non-combustible material is less than 12", you must install the fireplace hood accessory (24", 30", and 36” models only). See Figure 4 on page 7 and Figure 5 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 non-combustible material(s) above the fireplace opening. Non-combus- tible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have non-combus- tible material behind it. Non-combustible material must extend at least 8 inches up (for all models). If non-combustible material is less than 12", you must install the fireplace hood accessory (24", 30”, and 36" models only). Even if non-combustible material is more than 12", you may need the hood accessory to deflect heat away from your mantel shelf. See Figure 5 and Figures 6 and 7, 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.
Non-Combustible | Requirements for |
Material Distance (A) | Safe Installation |
| |
12" or more | Non-combustible material OK. |
Between 8" and 12" | 24", 30", or 36” Models: Install fireplace hood accessory |
| (GA6050, GA6052, or GA6053 see Accessories, page 30). |
| 18" Model: Non-combustible material OK. |
Less than 8" | Non-combustible 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 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
