18
CDVZ Series Direct Vent Gas Fireplace
20014621
tom, sides and top.
Twist Lock Vent Starter Kit 7TCRVT, plus Elbow 7TCDV90
must be used in Vertical Sidewall installations.
Canadian & USA Installations:
The venting system must conform with local codes,
or in the absence of local codes, with National
Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest edition, or
CSA B149.1 Installation Code.
Only Vermont Castings Group venting components spe-
cifically approved and labelled for this fireplace may be
used
.
Vertical Sidewall Installation
STEP 1
Locate vent opening on the wall. It may be necessary to first
position the fireplace and measure to obtain hole location.
Depending on whether the wall is combustible or noncom-
bustible, cut opening to size. (Page 14, Fig. 17)
For combustible walls first frame in opening.
Combustible Walls
(Fig. 17): Cut a 9
³⁄₈
”H x 9
³⁄₈
” W (240
x 240 mm) hole through the exterior wall and frame. For
7TCRVT1320 cut a 10
³⁄₈
”H x 9
³⁄₈
” W (264 x 240 mm)
hole.
Noncombustible Walls
(Fig. 17): Hole opening must be
7.5” (190 mm) in diameter.
STEP 2
Slide venting component on collar of fireplace. Secure
component to fireplace by running a screw (self-tapping)
through tab & into outer casing. (Fig. 30)
8
CFM143
2/2/01 sta
Ensure Pipes are
Concentric
CFM143a
Fig. 30
Always start vertical run with 7TCDV90 on 36CDVR
unts.
7TCDV90
STEP 3
Measure the horizontal length requirement including a 2”
(51 mm) overlap, i.e. from the elbow to the outside wall
finish plus 2”, or the distance required if installing a second
90° elbow. (Fig. 31)
CFM136
Rear Vent horizontal length
2/26/01 sta
X
Always install hori-
zontal venting on a
level plane.
CFM136
Fig. 31
Measure horizontal length including 2” overlap.
STEP 4
Use appropriate length of pipe section - telescopic or fixed
- and install the horizontal vent sections. A starter section
of pipe which goes through the wall is packaged with the
7TCRVT kit, and can be cut to suit if necessary. (Fig. 32)
Sealing between the vent pipe and firestop with
high temperature sealant will restrict cold air
being drawn in around fireplace.
STEP 5
Guide the vent termination’s 4” and 7” collars into their
respective vent pipes. Double check that the vent pipes
overlap the collars by 2” (51 mm). Secure the termination
to the wall with screws provided and caulk around the wall
plate to weatherproof. (Fig. 33)
1
2
3
4
1 + 2 + 3 + 4 = 270
o
CFM132
Insert Rear Vent Sidewall
2/26/01 sta
CFM132
Fig. 29
Maximum number of elbows.
Example:
Elbow 1 = 90°
Elbow 2 = 45°
Elbow 3 = 45°
Elbow 4 = 90°
Total angular variation = 270°
