Installation Clearances

INSTALLATION

Continued

IMPORTANT: Vent-free gas log heaters add moisture to the air. Although this is beneﬁcial, installing firebox in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air for Combustion and Ventilation, page 6.

IMPORTANT: Make sure the ﬁrebox is level. If firebox is not level, log set will not work properly.

Note: Your Vanguard ﬁrebox is designed to be used in zero clearance installations. Wall or fram- ing material can be placed directly against any exterior surface on the rear, sides, or top of your ﬁrebox, except where standoff spacers are inte- grally attached. If standoff spacers are attached to your ﬁrebox, these spacers can be placed directly against wall or framing materials.

Use the dimensions shown for rough openings to create the easiest installation (see Built-In Firebox Installation, page 14).

Example

*Minimum 16 inches from Side Wall

Figure 6 - Minimum Clearance for

Combustible to Wall

Mantel Clearances for Built-In

Installation

If placing custom mantel above built-in ﬁrebox, you must meet the minimum allowable clearance between mantel shelf and top of ﬁrebox opening shown in Figure 8. These are the minimum allowable mantel clearances for a safe installation. Use larger clearances wherever possible to minimize the heating of objects and materials placed on the mantel.

WARNING: Maintain the minimum clearances. If you can, provide greater clearances from ﬂoor, ceiling, and adjoining wall.

Carefully follow the instructions below. This will ensure safe installation.

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

CAUTION: Close screens before operation of vent-free gas log heater. Do not allow the heater to touch or extend beyond the ﬁreplace screen.

If your installation does not meet the minimum clearances in Figure 8, you must:

•raise the mantel to an acceptable height, OR • remove the mantel.

A.Clearances from the side of the fireplace cabinet to any combustible material and wall should follow diagram in Figure 6.

Example: The face of a mantel, bookshelf, etc. is made of combustible material and protrudes 3 1/2" from the wall. This combus- tible material must be 4" from the side of the ﬁreplace opening (see Figure 6).

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

MINIMUM CLEARANCE TO

COMBUSTIBLE MATERIALS

Top	Left and	Bottom
	Right Sides	and Rear

42"	16"	0"

Note: All vertical measurements are from top of ﬁreplace opening to bottom of mantel shelf. All measurements are in inches.

Facing material					Mantel Shelf
Facing material		10"
(above ﬁrebox)		10"
(above ﬁrebox)		8"
may be of		8"
may be of
combustible		6"
material, including		2 1/2"
decorative mantel
ornaments.
					19"	20"	21"	22"
Firebox					13"	16"	19"	21"
Wire	-mesh


Screen				Supplied
				Firebox Hood
				Firebox Hood
				Must Be Used
				Must Be Used
			at All Times

For FB32NCA and NLFB32NC Series noncirculating, smooth face models

For FB32CA and NLFB32C Series circulating, louvered models only

Figure 7 - Minimum Mantel Clearances

for Built-In Installation

105604-01H

www.desatech.com

NLFB32NC, NLFB32C, FB32CA, FB32NCA specifications

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