General Information Assembling Vent Pipes; Twist Lock Pipes - Majestic fireplaces DVHVAC36 Homeowner's Installation And Operating Manual

Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
Inside Corner
G =
Combustible
G
6" (152 mm)
Noncombustible
V
2" (51 mm)
Balcony -
with no side wall
M
V
M =
Combustible &
Noncombustible
12" (305 mm)
*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions
specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3' (914 mm) minimum between termination caps. 2. All
mechanical air intakes within 10' (1 m) of a termination cap must be a minimum of 3' (914 mm) below the termination cap. 3. All
gravity air intakes within 3' (914 mm) of a termination cap must be a minimum of 1' (305 mm) below the termination cap.
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 Corpo-
ration 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.
10001195
Outside Corner
V
F
Balcony -
with perpendicular side wall
M
V
Combustible &
Noncombustible
M = 24" (610 mm)
P = 20" (508 mm)

General Information Assembling Vent Pipes

Alcove Applications*
F =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
No.
of Caps
1
P
2
3
4
D = # of Termination caps x 3
Min.
C = (2 / # termination caps) x D
Max.
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. (Fig.
11)
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.
DVHVAC36
D
C
C
V
E
O
E
= Min. 6" (152 mm) for
non-vinyl sidewalls
Min. 12" (305 mm) for
vinyl sidewalls
O
= 8' (2.4 m) Min.
D C
Min. Max.
3' (.9 mm) 2 x D
Actual
6' (1.8 m) 1 x D
Actual
9' (2.7 m) 2/3 x D
12' (3.7 m) 1/2 x D
Actual
Female End
TWL100
Twist Lock Pipe
3/12/99 djt
Actual
Actual
584-15
TWL100
11