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NVC Series B-Vent
20000194
Clearance to Combustibles
Appliances
Top ........................................................... 0” (0mm)
Bottom ..................................................... 0” (0mm)
Side ......................................................... 0” (0mm)
Back......................................................... 0” (0mm)
Perpendicular Sidewall ............................ 0” (0mm)
Top of unit to ceiling ........................... 36” (914mm)
Front of unit to combustibles ............. 36” (914mm)
Venting
B-Vent .................................................... 1” (25mm)
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
Figures 2a and 2b and the Mantel Chart below.
The distances and reference points are not affected by
the fitting of a bay window front trim kit.
Noncombustible mantels and legs may be installed at
any height and width around the appliance.
When using a paint or lacquer to finish the mantel, such
paint or lacquer must be heat resistant to prevent
discoloration.
ABCDE
V
W
X
Y
Z
Fireplace
Ref. Mantel Ref. Mantel From Top
Shelf Depth of Comb. Chamber
V 10" (254mm) A 19¹⁄₂" (495mm)
W 8" (203mm) B 17¹⁄₂" (444mm)
X 6" (152mm) C 15¹⁄₂" (394mm)
Y 4" (101mm) D 13¹⁄₂" (343mm)
Z 2" ( 51mm) E 11¹⁄₂" (292mm)
Fig. 2a Mantel clearances.
Side View
CFM146
Top of
Combustion Chamber
Bottom of Door Trim
Top Louvre Assembly
J
F
G
H
I
Mantel
Leg
Ref. Mantel Ref. Mantel Leg From Side
Leg Depth of Comb. Opening
F 10" (254mm) K 12" (305mm)
G 8" (203mm) L 10" (254mm)
H 6" (152mm) M 8" (203mm)
I 4" (101mm) N 6" (152mm)
J 2" ( 51mm) O 4" (101mm)
O
N
M
L
K
CFM164
CFM170
Fig. 2b Combustible mantel leg minimum installation.
Side of
Combustion Chamber
Black
Surround
Face
Hearth
A hearth is not mandatory but is recommended for
aesthetic purposes. We recommend a noncombustible
hearth.
Cold climate installation recommendation: When
installing this unit against a noninsulated
exterior wall or chase, it is mandatory
that the outer walls be insulated to
conform to applicable insulation codes.