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Initial Installation
QUALIFIED INSTALLERS ONLY
HORIZONTAL INSTALLATION:
STEP 1. Set the appliance in the desired location. Check to determine if wall studs or roof rafters are
in the way when the venting system is attached. If this is the case, you may want to adjust the
location of the appliance.
STEP 2. Direct vent pipe and ttings are designed with special twist-lock connections. Assemble the
desired combination of black pipe and elbows to the appliance adapter with pipe seams oriented
towards the wall or oor, as much out of view as possible.
Place a bead of Mil-Pac on the
outer edge of the inner exhaust
pipe (non-ared end). Place a bead
of high temperature silicone on the
male edge of the outer pipe. Push the
pipe sections completely together,
then twist-lock one section clockwise
approximately turn, until the two
sections are fully locked. The female
locking lugs will not be visible from
the outside, on black pipe. They may
be located by examining the inside of
the female ends as shown in Figure
12.
Notes:
(1) Twist-lock procedure: four (4) indentations, located on the female end of the pipes and ttings, are
designed to slide straight onto the male ends of adjacent pipes and ttings, by orienting the four pipe
indentations so they match and slide into the four entry slots on the male end.
(2) Horizontal runs of vent pipe must be supported every three feet. Wall straps are available for this
purpose, also when running horizontal pipe minimum clearances to combustibles must be maintained; 2
inches (5.1 cm) at top, 1 inches (3.8 cm) at sides, 1 inches (3.8 cm) at bottom.
Sealant
Female
Locking
Lugs
Male
Locking
Lugs
Figure 12: Twist-Lock Connection
Woodscrews
Wall Thimble
Strap
Sheet metal
screws
Fold strap
here
1
1
/4"
(3.2cm)
Figure 14: Installing Decorative Wall Thimble.
10"
(254mm)
10"
(254mm)
Figure 13: Wall Framing Hole for
Horizontal Installation.
14