8

INSTALLATION

Installation And Clearances (Vent-Free Operation Only)

INSTALLATION

Continued

Minimum Clearances For Side Combustible Material, Side Wall, and Ceiling

A.Clearances from the side of the fireplace cabinet to any com- bustible material and wall should follow diagram in Figure 5.

Example: The face of a mantel, bookshelf, etc. is made of combustible material and protrudes 3 1/2" from the wall. This combustible material must be 4" from the side of the fireplace opening (see Figure 5).

Note: When installing your gas logs into a manufactured fire- box, follow firebox manufacturer’s instructions for minimum clearances to combustible materials.

B.Clearances from the top of the fireplace opening to the ceiling should not be less than 42 inches.

Example

*

*Minimum 16 inches from Side Wall

Figure 5 - Minimum Clearance for Combustible to Wall

NOTICE: Manual control heaters may be used as a vented product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, noncombustible material above fire- place opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation, page 10.

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 6 and Figures 7 and 8 on page 9 for minimum clearances.

IMPORTANT: If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Install- ing Damper Clamp Accessory for Vented Operation, page 10.

Noncombustible

Requirements for

Material Distance (A)

Safe Installation

 

 

12" or more

Noncombustible material okay.

Between 8" and 12"

24" or 30" Models: Install

 

fireplace hood accessory

 

(GA6050, GA6052, or GA6053

 

see Accessories, page 36).

 

18" Model: Noncombustible

 

material 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.

 

 

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 information 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 noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" models only). See Figure 6 for minimum clearances.

IMPORTANT: If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Install- ing Damper Clamp Accessory for Vented Operation, page 10.

Heat Resistant

Material

(A)

Figure 6 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace

For..com

107123-01E

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Desa CRL2718N, CRL3124N, CCL3018NT, CGD3924NT, CGD3018NT Minimum Noncombustible Material Clearances, If Not Using Mantel