E. Combustible Mantel

Refer to the shaded areas of Figure 12.11 for the location and dimensions of a combustible mantel.

A combustible mantel may be positioned no lower than 22 in. (508 mm) above the top of the fireplace opening. A combustible mantel may have a maximum depth of 12 in. (305 mm).

Combustible trim and materials cannot be placed within 6 in. (152mm) of the fireplace opening (top or sides). Combustible materials projecting more than 1 1/2 in. (38 mm) shall not be placed within 12 in. (305 mm) from the top of the fireplace opening.

Combustible trim must not cover the metal surfaces of the fireplace. Mantel clearance is in accordance with Section 7-3.3.3of ANSI/NFPA211.

Combustible Wall

Combustible

7 ft (2134 mm)

 

Decorative Facing

 

 

minimum

 

 

base of fireplace

 

 

to ceiling

2 x 4 stud wall

 

 

 

Grid represents

 

 

1 in. squares

 

Standoffs

12 in./305 mm

 

 

Mantel

 

 

22 in./559 mm

 

 

minimum

 

 

12 in./305 mm

 

Non-combustible

minimum

 

 

 

Decorative Facing

 

 

such as:

 

 

Steel, iron, brick,

6 in./152 mm

 

tile, concrete, slate,

minimum

 

glass, plasters.

1 1/2 in./

 

 

38 mm

 

 

maximum

 

Seal joint with

Measured from top of fireplace opening

 

 

 

non-combustible

 

 

sealant

 

 

Figure 12.11 Clearances to Mantels or other Combustibles above Fireplace

Heatilator • Birmingham BIR42 • 4059-308 Rev J • 1/11

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Heatiator BIR42 owner manual Combustible Mantel, Standoffs

BIR42 specifications

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