INSTALLATION
Continued
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" thick. With sheet metal, you must have non- combustible material behind it. Noncombustible material must extend at least 8" up (for all models). 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 6 and Figure 7 on page 11 for minimum
Noncombustible | Requirements for | |||
Material | Safe Installation | |||
Distance (A) |
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12" or more | Noncombustible material | |||
| okay. | |||
Between 8" | Noncombustible material | |||
and 12" | okay. | |||
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. | |||
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Heat Resistant |
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Material |
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Marble, Tile, etc.) Above Fireplace
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 11.
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 6 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 6).
Determining Minimum Mantel Clearance
When Using a Hood
If minimum clearances in Figure 6 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 requirement of the national product standard. Follow all minimum clearances shown in this manual.
| 10" |
| Mantel Shelf |
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| 8" |
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| Underside of |
| 6" |
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| Mantel Shelf |
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| 2 1/2" |
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Minimum |
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| All minimum |
Noncombustible |
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Material | (A) |
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| in inches |
| 8" | 8" | 14" | 17" | 20" |
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| Top of |
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| Fireplace |
| Minimum |
| Distances to | Opening | |
| Noncombustible | Underside of |
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| Material Height | Mantel |
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Figure 6 - Minimum Mantel Clearances
Without Using Hood
10 | www.desatech.com |
