Owner`s manual

10
MINIMUM CLEARANCE TO COMBUSTIBLES
HOW TO CORRECTLY SIZE AND INSTALL MANTELS AND FIREPLACE HOODS
A. ABOVE THE FIREPLACE:
To install the unvented gas log set, there must ALWAYS be noncombustible or heat-resistant material immediately
above the fi replace opening. Heat-resistant materials (i.e., marble or slate) must be at least
5
/
8
" thick. Sheet metal
should not be installed onto combustible materials. If you DO NOT install a fi replace hood, there MUST be at least
12" of noncombustible or heat-resistant material immediately above the fi replace opening (see X in Fig. 10-2
below). If you DO install a fi replace hood, there MUST be at least 10" of noncombustible or heat-resistant material
immediately above the fi replace opening (see Y in Fig. 10-3 below). If there is a wooden mantel, shelf, or other
combustible projection above the fi replace, follow the information in Fig. 10-2 or Fig. 10-3 below.
EXAMPLE: If the fi replace has a combustible projection (mantel or shelf) 20" above the top of the fi rebox, the
maximum horizontal projection out from the face of the fi replace will be:
1. If a fi replace hood is not installed - 2.5
" (see Fig. 10-2).
2. If a fi replace hood is installed - 10
" (see Fig. 10-3).
IF YOU CANNOT MEET THESE MINIMUM CLEARANCES, YOU MUST OPERATE THE UNVENTED GAS
LOG SET WITH THE CHIMNEY FLUE DAMPER OPEN.
Note: Clearances to combustible construction are
those distances required to ensure that fi replace
mantels, facings, walls, ceilings, and fl oorings will
not catch fi re.
In most cases, these clearances should also be adequate to
prevent any discoloration or warping due to heat. However,
every gas log installation presents a different and unique
set of circumstances involving many variables beyond the
control of the gas log manufacturer. These include paint or
fi nish composition, previous exposure to heat, methods and
quality of construction, airfl ow patterns, glass doors, fans,
or blowers, etc. Because of these variables, we cannot
guarantee that heat warping or discoloration will never
occur. The potential for heat warping or discoloration may
exist no matter what item(s) you are burning in the fi replace,
including wood.
The dimensions shown in Fig. 10-1 are MINIMUM
CLEARANCES to maintain when you install this gas log set.
BOTH SIDES of the fi replace opening MUST BE AT LEAST
6" from any combustible side walls. The ceiling MUST BE
at least 42" from the top of the fi replace opening.
Clearances to Combustible Construction:
Side walls: 6" from side of fi replace opening (Fig. 10-1)
Ceiling: 42" from top of fi replace opening (Fig. 10-1)
Mantel: (see Figs. 10-2, 10-3, and paragraph A below)
Flooring: (see paragraph B below)
If the unvented gas log set is installed in a factory-built
fi replace, follow the manufacturer’s guidelines for minimum
clearances to combustibles. In the absence of such
guidelines, follow the instructions below:
x
HORIZONTAL
PROJECTION
FROM FACE OF
FIREPLACE
NON-COMBUSTIBLE
OR HEAT RESISTANT
MATERIAL
TOP OF
FIREBOX
10"
8"
6"
2.5
.75"
30"+
28" 25"
20"
12"
FIREBOX
VERTICAL DISTANCES
TO UNDERSIDE OF
MANTEL
x
HEIGHT ABOVE
OPENING
0"-12"
12"-20"
20"-25"
25'-28"
28"-30"
30" PLUS
PROJECTION OUT
FROM FACE
0"
3/4"
2 1/2"
6"
8"
10"
HORIZONTAL
PROJECTION
FROM FACE OF
FIREPLACE
NON-COMBUSTIBLE
OR HEAT RESISTANT
MATERIAL
TOP OF
FIREBOX
10"
8"
6"
2.5"
15"
20"+
12
"
10"
17"
FIREBOX
VERTICAL DISTANCES
TO UNDERSIDE OF
MANTEL
Y
HEIGHT ABOVE
OPENING
0"-10"
10"-12"
12"-15"
15'-17"
17"-20"
20" PLUS
PROJECTION OUT
FROM FACE
0"
1 1/2"
2 1/2"
6"
8"
10"
* Standard Fireplace Hood with a minimum 4 inch horizontal projection
MANTEL CLEARANCE WITH HOOD *
MANTEL CLEARANCE WITHOUT HOOD
1.5"
FIREPLACE HOOD WITH
MINIMUM 4" HORIZONTAL
PROJECTION
Fig. 10-2
Fig. 10-3
Horizontal
projection
from face of
fi replace
Horizontal
projection
from face of
fi replace
Noncombustible
or heat-resistant
material
Noncombustible
or heat-resistant
material
*Standard fi replace hood with a minimum 4" horizontal projection.
Mantel clearance without hood
Mantel clearance with hood*
Firebox
Firebox
To p o f
fi rebox
To p o f
fi rebox
Vertical distances
to underside of
mantel
Vertical distances
to underside of
mantel
Fireplace hood
with minimum 4"
horizontal projection
Height above
opening
Height above
opening
Projection out
from face
Projection out
from face
Plus
Plus
B. IN FRONT OF THE
FIREPLACE:
Be certain that
combustible flooring
material (i.e., carpet,
tile, etc.) is not too close
to the unvented gas
log set. If the unvented
gas log set is at fl oor
level or less than 6
"
above the floor, there
MUST be at least 12
" (1
foot) of noncombustible
material between the
front of the fireplace
and any combustible
fl ooring.
42"
6"
Minimum clearances to
sidewalls and ceiling
Fig. 10-1
Minimum clearances
to side walls and ceiling