12
CDVZ Series Direct Vent Gas Fireplace
20014621
General Information Assembling Vent Pipes
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 or approved
by Vermont Castings Group can be used in Direct Vent
Vermont Castings Group can be used in Direct Vent
can 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 pipe in place with a hose
clamp (provided).
*Be sure the flex pipe overlaps at least 1” (25 mm) onto the
collars of the fireplace and termination. If the termination
has an internal bead, be sure to overlap and secure 1” (25
mm) past the bead.
Fig. 11
Termination clearances.
* Be sure the vent is actually crushed before proceeding.
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.
FP1471
flex vent
Hose Clamp
Apply High Tempera-
ture Sealant
FP1471a
Fig. 12
Apply high temperature sealant to 4” and 7” pipes.
Outside Corner
Inside Corner
Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
G =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
F =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
G
Balcony -
with no side wall
M =
Combustible &
Noncombustible
12" (305 mm)
M
Balcony -
with perpendicular side wall
M =
12" (305 mm)
P =
6” (152 mm)
M
F
Alcove Applications*
C
D
C
E
V
V
Combustible &
Noncombustible
E
= Min. 2” (51 mm) for
non-vinyl sidewalls
Min. 12” (305 mm) for
vinyl sidewalls
O
= 8’ (2.4 m) Min.
O
P
V
V
V
584-15
No.
of Caps
D
Min.
C
Max.
1
3’ (914 mm) 2 x D
Actual
2
6’ (1.8 m)
1 x D
Actual
3
9’ (2.7 m)
2/3 x D
Actual
4
12’ (3.7 m) 1/2 x D
Actual
D
Min.
= # of Termination caps x 3
C
Max.
= (2 / # termination caps) x D
Actual
*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.