DuraVent Multi-fuel venting system UL 641 - Manual (Page 6)

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push together and twist to lock.
C. Continue to assemble pipe as described in
Step 2.
4. If the flue exit is on the back of stove, and
an exterior vertical installation is desired
Figure 4):
A. Place the appliance according to
manufacturer’s instructions.
B. Cut a square opening in the wall in
accordance with the dimensions in Table
1. The black portion of the Wall Thimble is
to be attached to the interior wall, and the
galvanized portion is to be attached to the
exterior wall. The Wall Thimble adjusts to fit
walls from 3”-8” thick (Figure 5).
C. Connect a Pipe Adapter to back of stove;
attach pipe to penetrate wall so vertical
section from Tee will be 3” from the exterior
of the wall. Attach a Single Tee or a Double
Tee with Clean-Out Adapter, and proceed up
the wall. Attach a Tee Support/Wall Strap just
above the tee. A Tee Support/ Wall Strap must
be placed every 4-feet along the vertical run.
Assemble pipe in the same manner described
in Step 2 of the general instructions. If
an Adjustable Length is required in the
horizontal run, and the Adjustable Length
must enter the Wall Thimble, the diameter
of the center hole in the Wall Thimble must
be enlarged by 1/8” to accommodate the
Adjustable Length.
D. Seal the exterior section of the Wall
Thimble to the wall with non-hardening
waterproof sealant. As an option, you may
also seal the gap between the pipe and Wall
Thimble with sealant.
5. If the flue exit is on back of the stove, and
a horizontal through-the-wall installation is
Table 1
Vent Component Framing Dimensions
3” Ceiling Support/
Firestop Spacer
9-3/4” x 9-3/4”
4” Ceiling Support/
Firestop Spacer
.
10-3/4” x 10-3/4”
3” & 4” Cathedral
Ceiling Support Box
10-3/4” x 10-3/4”
3” & 4” Wall Thimble
7-1/2” x 7-1/2”
Figure 1
VERTICAL CAP
STORM COLLAR
FLASHING
ATTIC
INSULATION
PIPE ADAPTER
CEILING SUPPORT
FIRESTOP SPACER
SEE TABLE 1
FOR FRAMING
REQUIREMENTS
3 INCH MINIMUM
ATTIC
INSULATION SHIELD
PELLET
VENT PIPE
STOVE