INSTALLATION

Continued

Example

*

*Minimum 16 inches from Side Wall

Figure 4 - Minimum Clearance for

Combustible to Wall

NOTICE: Non thermostat con- trolled heaters may be used as a vented product. If so, you must always run heater with chimney flue damper open and damper clamp installed. If running heater with damper open, noncombus- tible material above the fireplace opening is not needed. Go to Installing Damper Clamp Ac- cessory for Vented Operation, page 12.

Minimum Noncombustible Material Clearances

If Not Using Mantel

Note: If using a mantel proceed to If Using Man- tel. If not using mantel, follow the information on this page.

You must have noncombustible material(s) above the fireplace opening. Noncombustible materi- als (such as slate, marble, tile, etc..) Must be at least 1/2" thick. With sheet metal, you must have noncombustible material behind it. Noncombus- tible 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" Models Only). See Figure 5 for minimum clearances.

Noncombustible

 

Requirements for

Material Distance (A)

 

Safe Installation

12" or more

 

Noncombustible

 

 

material OK.

Between 8" and 12"

 

24" Models:

 

 

Install fireplace hood

 

 

accessory (GA6050,

 

 

GA6052, GA6053, see

 

 

Accessories, page 27).

 

 

18" Model: Noncom-

 

 

bustible material OK.

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 and damper

 

 

clamp installed.

 

 

 

 

 

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" thick. With sheet metal, you must have non- combustible 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" Models Only). Even if noncombustible material is more than 12", you may need the hood acces- sory to deflect heat away from your mantel shelf. See Figure 5 and Figures 6 and 7, 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.

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Desa SBJ24VPA, SMA18VNA, SMA24VPA, SBJ18VNA installation manual Installation, Minimum Noncombustible Material Clearances