Desa FBPS installation manual Mantel Clearances for Projected Built-In Installation, Screen

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UNVENTED (VENT-FREE) LOGMATE® FIREBOX

INSTALLATION

Continued

Mantel Clearances for Projected Built-In Installation

Wall board or facing material (above firebox) may be of combustible material, including decorative mantel ornaments or other similar projections off of the facing material.

If placing custom mantel above built-in firebox, you must meet the minimum allow- able clearance between mantel shelf and top of firebox hood shown in Figure 7. These are the minimum allowable mantel clear- ances for a safe installation. Use larger clear- ances wherever possible to minimize the heating of objects and materials placed on the mantel.

CAUTION: Do not allow the vent-free gas log heater to touch or extend beyond the firebox

Note: Fireplace

shown as cross- 7" Min. section for clarity. Mantel material

Top Frame (Combustible Material)

Firebox Top

Mantel Shelf

9 1/4"

6"
3"
Combustible
Material 1 1/2"	12"	15"	18"
Max Thickness

screen.

If your installation does not meet the mini- mum clearances shown in Figure 7, you must:

•raise the mantel to an acceptable height,

OR

•remove the mantel.

BUILT-IN OR INTERNAL WALL FIREBOX INSTALLATION

may not be less than 7" from top of hood. Do not cover louver openings.

	Note: All vertical
Wire-mesh	measurements are
Screen	minimum distances
Supplied Firebox	from top of fireplace
Hoods Must Be	hood to bottom of mantel
Used at All Times	shelf. These minimum
	clearances replace any
	other recommended
	clearances supplied with
	your ANS Z21.11.2
	approved gas logs.

Built-in installation of this firebox involves installing firebox into a framed-in enclo- sure. This makes the front of firebox flush with wall. If installing a mantel above the firebox, you must follow the clearances shown in Figure 7. Follow the instructions below to install the firebox in this manner.

1.Frame in rough opening. The firebox framing should be constructed of 2 x 4 lumber or heavier. Construct framing using dimensions shown in Figure 8 and Figure 9, page 9. It is recommended that the framing be constructed first and the unit be placed in position. After sliding the unit into place, the flanges may be nailed to the framing before applying the wallboard to the exterior framing.

2.If the vent-free firebox is to be installed directly on carpeting, tile (other than ceramic), or any combustible material other than wood flooring; the vent-free firebox must be installed upon a metal or wood panel extending the full width and depth of the vent-free firebox.

Figure 7 - Minimum Mantel Clearances for Projected or Built-In Installation

22 3/4" Min.

Wallboard

Gas Line

Facing	4" Min.
Wall

40 1/4" Min.

36" Min. to

Board

Facing Wall

Base

Facing Wall	43 3/4" Min.
(Base line)

Figure 8 - Framing for Built-In or Internal Wall Firebox Installation

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