Desa CGD3924NR ユーザーズマニュアル

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103343

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 inches up (for all models). If non
combustible material is less than 12", you must install the fireplace hood acces-
sory (24" and 30" 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 chart below and Figures 6 and 7 for minimum clearances.

IMPORTANT:

 If you cannot meet these minimum clearances, you must operate

heater with chimney flue damper open.

Minimum Non-
Combustible 
Material 

Minimum Non-
Combustible 
Material Height 

Distances to 
Underside of
Mantel 

Top of Fireplace
Opening

Underside of
Mantel Shelf

Mantel Shelf

12"

20"

24

1/2

"

27

1/2

"

30"

All minimum 
distances are
in inches

Log Set
24"/30" Models

8"

14"

16

3/4

"

18

1/2

"

20"

18" Model

2 

1

/2

"

6"

8"

10"

If above minimum clearances are not met, you must have a hood. Follow
minimum clearances shown in Figure 7 when using hood.

12" or more

Non combustible material okay.

Between 8" and 12"

Install fireplace hood accessory (GA6050 or
GA6052, see 

Accessories, page 29).

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.

If you meet minimum clearance between mantel shelf and top of fireplace open-
ing, a hood is not required (see Figure 6).