General Information For Connecting Vent Pipes; Crimped End Pipes/ Twist Lock Pipes - Vermont Castings DVR33 Homeowner's Installation And Operating 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. 12 Termination clearances.

General Information for Connecting Vent Pipes

Crimped End Pipes
Before joining elbows and pipes, apply a bead of high
temperature sealant to the crimped end of the elbow or
pipe.
Join the pipes using a 2" (50 mm) overlap and secure
the joints with three sheet metal screws (Fig. 13). Wipe
off excess sealant.
Canadian Installations:
The venting system must be installed in accordance
with the current CSA-B149.1 installation code.
USA Installations:
The venting system must conform to local codes and/
or the current National Fuel Code ANSI Z223.1.
Only venting components manufactured by Vermont
Castings, Majestic Products may be used in Direct
Vent systems.
10004920
Vermont Castings, Majestic Products: DVR33
Outside Corner
B =
Combustible
6"(152mm)
Noncombustible
V
2"(50mm)
B
Balcony -
with perpendicular side wall
H
V
J
Combustible &
NonCombustible
H = 24"(610mm)
J = 20"(508mm)
Recessed Location
C = Maximum depth of 48"
(1219mm) for recessed
location.
D = Minimum width for back wall
of a recessed location.
Combustible 38"(965mm)
Noncombustible 24"(610mm)
E = Clearance from corner in
recessed location.
Combustible 6"(152mm)
Noncombustible 2"(50mm)
CFM175
Fig. 13 Apply a bead of high temperature sealant.
D
C
C
E
V
CFM115
1" (25 mm) from
crimped end of pipe
Screw
11