General Information Assembling Vent Pipes; Flex Vent Pipes - Vermont Castings DVRT41 Homeowner's Installation And Operating Manual

DVRT41 Direct Vent Gas Fireplace
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. 15 Termination clearances.

General Information Assembling Vent Pipes

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/NFPA 54.
Only venting components manufactured by CFM
Corporation may be used in Direct Vent systems.

Flex Vent Pipes

Before joining the flex vent pipe to the unit, apply a
bead of high temperature sealant* (provided) to the 4"
pipe exiting the fireplace. Secure flex vent piep in place
with a hose clamp (provided).
*Be sure the flex pipe overlaps at least 1" (25mm) onto
the collars of the fireplace and termination. If the
termination has an internal bead, be sure to overlap
and secure 1" (25mm) past the bead.
12
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
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)
* Be sure the venint is actually crushed before pro-
ceeding. Apply a tug to be sure the vent will not slip off
the collars.
Repeat process with 7" flex vent pipe. The same
procedure must be performed on the vent side.
Fig. 16 Apply high temperature sealant to 4" and 7" pipes.
D
C
E
V
584-15
Apply High Tempera-
ture Sealant
Hose Clamp
FP1471
10006740