INSTALLATION
Continued
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 informa- tion 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 noncombus- tible material is less than 12", you must install the fireplace hood accessory (24" and 30" models only). See 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 12.
Noncombustible |
| Requirements | ||
Material |
| for Safe | ||
Distance (A) |
| Installation | ||
|
|
| ||
12" or more |
| Noncombustible | ||
|
| material okay. | ||
Between 8" and 12" |
| Install fireplace hood | ||
|
| accessory (GA6050, | ||
|
| GA6052, or GA6053, | ||
|
| see Accessories, | ||
|
| page 26). | ||
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 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
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 inches 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 5 and Figures 6 and 7 on page 11 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 12.
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 listed below, you will need a hood.
Determining Minimum Mantel Clearances If you meet minimum clearance between mantel shelf and top of fireplace opening, a hood is not required (see Figure 6, page 11).
Determining Minimum Mantel Clearances When Using a Hood
If minimum clearances in Figure 6, page 11 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 7, page 11 when using hood.
NOTICE: Surface temperatures ofadjacentwallsandmantelsbe- comehotduringoperation.Walls and mantels above the firebox may become hot to the touch. If installed properly, these tem- peratures meet the requirements of the national product standard. Follow all minimum clearances shown in this manual.
10 | www.desatech.com |
