Desa CTDV36NRA - Manual (Page 8)

111250-01A
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8
VENTING INSTALLATION
INSTRUCTIONS
Continued
2. Direct vent pipe sections and components are designed with
special twist-lock connections.
Twist-Lock Procedure: The female ends of the pipes have
locking lugs (indentations). These lugs will slide straight into
matching slots on the male ends of adjacent pipes. Push pipe
sections together and twist one section clockwise approximately
one-quarter turn until the sections are fully locked (see Figure
8).
Note: Horizontal runs of vent must be supported every three
feet. Use wall straps for this purpose.
3. Use a 45
°
elbow to connect venting system to fireplace flue col-
lar. The elbow is designed to be twist-locked onto the flue collar
as described in step 2.
IMPORTANT: Do not attempt to alter the
configuration of the elbow by cutting, twisting, bending, etc.
4. Assemble the desired combination of pipe and elbows to the
fireplace. If there are long portions of venting run, pre-as-
sembled pipe sections may be installed as subassemblies for
convenience.
5. Carefully determine the location where the vent pipe assembly
will penetrate the outside wall. The center of the hole should line
up with the center-line of the horizontal vent pipe. Mark the wall
for a 10" x 10" square hole. Cut and frame the square hole in the
exterior wall where the vent will be terminated. If the wall being
penetrated is constructed of noncombustible material, such as
masonry block or concrete, a 7
3 /
4
" hole with zero clearance is
acceptable (see Figure 9).
WARNING: Do not recess vent termination into
any wall. This will cause a fire hazard.
6. Noncombustible Exterior Wall: Position the horizontal vent
cap in the center of the 7 3 /
4
" round hole and attach to the exte-
rior wall with four wood screws provided. Before attaching
the vent cap to exterior wall, run a bead of non-hardening mastic
(pliable sealant) around the outside edges to make a seal be-
tween it and the outside wall.
Note: The four wood screws
provided should be replaced with appropriate fasteners for
stucco, brick, concrete, or other types of sidings.
VENTING INSTALLATION INSTRUCTIONS
Installation Planning
Figure 8 - Vent Pipe Connections
Female
Locking
Lugs
Male
Slots
(Framing
Detail)
10"
(254mm)
10" Inside Framing
(254mm)
10"
(254mm)
7 3 / 4 "
(197mm)
Vent Opening
Combustible Wall
Vent Opening
Noncombustible Wall
Figure 9 - Vent Opening Requirements
Center
of Hole