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FV34 DECOR
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Clearance from Appliance Side Walls
Clearances to Combustible Side Walls
The minimum distance required from the side edge of the visible glass to a combustible side wall is 16
”
. Combustible side walls,
mantel corbels, mantel legs and other combustible walls and decorative objects must fall behind a 45-degree line extending
outward from the side edges of the visible glass unless such objects are more than 16
” away from the visible side edges of the
glass. See
Figure 2-19 Side Wall Clearances.
If the required clearance cannot be m et to a pre-existing combustible side wall, an NFPA approved clearance
reduction shield, metal or ceramic board, must be added to the side wall.
Horizontal Clearance Reduction by 66%
NPFA 211 Approved
: Install 20-gauge or heavier steel
s
hield that provides at least a 1”
active airspace, on the
combustible wall surface. To provide for active airflow,
install at least 1” metal or ceramic standoffs or spacers
between the metal shield and the combustible surface
being protected. The bottom and top edges of the cavity
between the metal shield and the combustible surface
must be left open. The steel shield must be a minimum of
12”
larger in each direction than the surface area of the
source of heat; or if the surface being protected is smaller
than surface area of the source of heat, this shield must
be larger than the combustible surface in each direction.
By using this method of protection, if the required
horizontal clearance was 16
”
, the resulting clearance will
be reduced by 66% to 5-3/8
” between the heat source
and the metal shield.
Horizontal Clearance Reduction by 50%
NPFA 211 Approved
: Install an R-1 rated ceramic board or R-1 rated mineral board on the wall you are attempting to protect.
by using this method of protection, if the required horizontal clearance was 16
”
, the resulting clearance will be reduced by 50%
to 8
” between the heat source and the
R-1 Rated wall board.
14-
5
8
"
ROUGH FRAMING
DEPTH
40-
5
8
"
ROUGH FRAMING
WIDTH
16"
MINIMUM
TO SIDE
WALL
135°
ANY PROTRUSIONS IN
HATCHED AREA ARE
EXEMPTED AND ALLOWED.
16"
363 4"
ROUGH FRAMING
HEIGHT
3912 STICK FRAMING WIDTH
40-
5
8
" SOLID WALL FRAMING WIDTH
2X4
STUDS
HATCHED AREAS ARE NON-COMBUSTIBLE
ZONES. RECOMMENDED R-1 rated 1/2"
RIGID BOARD AS BASE MATERIAL.
72" MINIMUM
UNIT BASE TO CEILING
363 4
UNIT BASE
TO 8" DEEP
MANTEL
243 4
8
497 8"
UNIT BASE
TO VENT
CENTER LINE
95 8" UNIT
FACE TO
VENT
CENTERLINE
18" MINIMUM TO SOFFIT.
24" TO VINYL SOFFITS.
18"
HEARTH PAD
112" THICK
MAXIMUM
R-1 MINIMUM RATING REQUIRED. USE
OF 1/2" THICK R-1 BOard AS BASE
LAYER RECOMMENDED
MINIMUM REQUIRED DIMENSIONS
Column 1
Column 2
ROUGH FRAMING WIDTH
39-1/2" STICK FRAMING or 40-5/8"
SOLID WALL FRAMING
ROUGH FRAMING HEIGHT
36-3/4"
ROUGH FRAMING DEPTH
14-5/8"
MINIMUM FINISHING MATERIALS TOTAL THICKNESS
1"
UNIT BASE TO ROOM CEILING MINIMUM DISTANCE
72"
MINIMUM DISTANCE TO 8" MANTEL ABOVE UNIT BASE
36-3/4"
18" MIN.
1
1
Figure 3-18 Side Wall Clearances
Figure 3-17 CLEARANCES TO COMBUSTIBLES
1/2" CLEARANCE
FROM BACK
1/2" CLEARANCE
FROM SIDES
0" CLEARANCE FROM
TOP STANDOFFS
