Desa Tech CGD3924PT Installing, Continued, Accessory for Vented Operation, page, Less than

INSTALLING

Continued

NOTICE

You may use this heater as a vented product. If so, you must always run heater with chimney flue damper open. If running

heater with damper open, non-combustible material above fire- place opening is not needed. Go to Installing Damper Clamp

Accessory for Vented Operation, page 13.

Minimum Non-Combustible Material Clearances

If Not Using Mantel

Note: If using a mantel, go to page 11. If not using a mantel, follow the informa- tion on this page.

You must have non-combustible material(s) above the fireplace opening. Non- combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch

thick. With sheet metal, you must have non-combustible material behind it. Non-

combustible material must extend at least 8" up (for all models). If non-combus- tible material is less than 12", you must install the fireplace hood accessory (24" and 30" models only). See chart below 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 13.

Non-Combustible Material Distance (A) 12" or more Between 8" and 12"

Less than 8"

Requirements for

Safe Installation

Non-combustible material okay.

24" or 30" Models: Install fireplace hood accessory (GA6050 or GA6052, see Accessories, page 33). 18" Model: Non-combustible matedal okay.

Non-combustible matedal 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.

ml

Heat Resistant -_

Material

I

Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace

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