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Clearance to Combustibles
Appliance
Top Standoffs ............................................ 0" (0mm)
Bottom ...................................................... 0" (0mm)
Side Standoffs .......................................... 0" (0mm)
Back Standoffs .......................................... 0" (0mm)
Venting
Horizontal Termination through-a-side wall:
Vertical Sections:
Sides ............................................. 2¹⁄₂" (64mm)
Horizontal Sections:
Top ................................................. 3¹⁄₂" (89mm)
Bottom ........................................... 1¹⁄₂" (38mm)
Sides ............................................. 2¹⁄₂" (64mm)
Vertical Vent Application:
Sides ............................................. 1¹⁄₂" (38mm)
Mantels
The height that a combustible mantel is fitted above
the fireplace is dependent on the depth of the mantel.
This also applies to the distance between the mantel
leg (if fitted) and the fireplace.
For the correct mounting height and widths refer to
Figs. 3a and 3b, the following Mantel Charts.
Noncombustible mantels and legs may be installed
at any height and width around the appliance.
When using paint or lacquer to finish the mantel,
such paint or lacquer must be heat resistant to
prevent discoloration.
W
A
B
C
D
E
Noncombustible Finish Material
(Such as Dura Rock)
CFM146c
Fireplace Front
Mantel Chart
Mantel Shelf
Ref.
or Breast Plate Ref. of Comb. Chamber
Depth
V
10" (254mm)
W
9" (229mm)
X
8" (203mm)
Y
7" (178mm)
Z
6" (152mm)
Fig. 3a Combustible mantel minimum installation.
20007172
Combustible
Framing and
Finish Wall Above
Standoffs
V
May use
combustible
facing material
in this area
X
Standoff
Y
Z
Top of Sheet
Metal
Mantel from Top
A
10" (254mm)
B
9" (229mm)
C
8" (203mm)
D
7" (178mm)
E
6" (152mm)
Chateau
Decorative Gas Appliance
™
Mantel Leg
CFM164b
Side of Fireplace
Noncombustible
Finish Material
Mantel
Ref.
Leg Depth
F
12" (305mm)
G
9" (229mm)
H
6" (152mm)
I
4" (102mm)
J
3" (76mm)
Fig. 3b Combustible mantel leg minimum installation.
Hearth
A hearth is not mandatory but is recommended for
aesthetic purposes. We recommend a noncombustible
hearth which projects out 12" (305mm) or more from
the front of the fireplace. The hearth cannot exceed
1¹⁄₂" (38mm) in height from bottom of fireplace for ease
of door accessibility. (Fig. 4)
Cold climate installation recommendation:
When installing this unit against a non-
insulated exterior wall or chase, it is
mandatory the outer walls be insulated
to conform to applicable insulation
codes.
J
I
H
G
F
K
L
M
N
O
CFM170a
Mantel Leg from Side
Ref.
of Comb. Opening
K
12" (305mm)
L
9" (229mm)
M
6" (152mm)
N
4" (102mm)
O
3" (76mm)
5
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