General Information Assembling Vent Pipes - Majestic 33BDVR Installation Instructions And Homeowner's Manual

Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
Inside Corner
A =
Combustible
A
6"(152mm)
Noncombustible
2"(50mm)
V
Balcony -
with no side wall
G
V
G =
Combustible &
Noncombustible
12"(305mm)
Fig. 10 Termination clearances.
Canadian Installations:
Venting system must be installed in accordance with
the current CSA-B149.1 installation code.
USA Installations:
The venting system must conform with local codes and/
or the current National Fuel Gas code ANSI Z223.1/
NFPA 54.
Only venting components manufactured by CFM
Corporation can be used in Direct Vent systems.
Twist Lock Pipes
When using CFM Corporation twist-lock pipe it is not
necessary to use sealant on the joints. The only areas
of the venting system that need to be sealed with high
temperature silicone sealant are the collars on the
fireplace and termination, and the sliding joint of any
telescopic vent section used in the system.
10003357
Outside Corner
V
B
Balcony -
with perpendicular side wall
H
V
Combustible &
Noncombustible
H = 24"(610mm)
J = 20"(508mm)

General Information Assembling Vent Pipes

BDVR Series Direct Vent Gas Fireplace
Recessed Location
B =
Combustible
6"(152mm)
Noncombustible
2"(50mm)
C = Maximum depth of 48"
D = Minimum width for back wall
J
E = Clearance from corner in
To join the twist lock pipes together, simply align the
beads of the male end with the grooves of the female
end, then while bringing the pipe together, twist the
pipe until the flange on the female end contacts the
external flange on the male end. It is recommended
that you secure the joints with three (3) sheet metal
screws, however this is not mandatory with twist lock
pipe.
To make it easier to assemble the joints we suggest
putting a lubricant (Vaseline or similar) on the male end
of the twist lock pipe prior to assembly.
Male End
Screw Holes
Fig. 11 Twist-lock pipe joints.
D
C
C
E
V
(1219mm) for recessed
location.
of a recessed location.
Combustible 38"(965mm)
Noncombustible 24"(610mm)
recessed location.
Combustible 6"(152mm)
Noncombustible 2"(50mm)
Female End
584-15
TWL100
11