17
B.
For Heat-Fab Saf-T-Vent Stainless Steel Vent
Pipe
use a high temperature red silicone sealant
rated for 500
°
F The outside of the male end and
inside of the female end of the pipe must be
cleaned before applying the silicone bead.
For 3” vent pipe runs, the male end of the vent
pipe which goes over the outlet of the boiler’s
induced draft blower must be crimped. The vent
pipe should be crimped as minimal as possible
to provide a tight fit over the outlet. After
crimping is completed follow the instructions
for applying silicone sealant.
For 4” vent pipe runs, begin with a Saf-T-Vent
3” to 4” increaser fitting (#7374GC) over the
boiler’s induced draft blower outlet, to which an
even bead of high temperature silicone sealant
should be applied. Then continue the 4” Saf-T-
Vent pipe run by connecting the 4” male end of
the Saf-T-Vent to the increaser. (A locking band
may be used around this joint for additional
support.) The vent flow must be in the direction
indicated on the vent pipe.
When using the Tjernlund VH-1 vent hood, the
female end (flared end) of the vent pipe will
be connected to the termination hood. Apply
high temperature silicone in an even ¼” bead
approximately ¼” to
⅜
” from the end of the vent
hood’s connecting vent pipe. Also, run a similar
size bead of silicone sealant down the seam
weld of the vent pipe. Then push the female end
over the vent hood’s connecting vent pipe.
1. Apply the high temperature silicone around
the male end of the pipe (without the tabs)
in an even ¼” bead. Silicone bead should
be approximately ¼” to
⅜
” from the end of
hoRIZoNtAl VeNtING INStRuCtIoNS
5. Horizontal venting shall have a slope not
less than ¼
” (6.4mm) every 12 inches
(305mm) downward away from the boiler to
prevent collection of condensate throughout
the assembly.
6. Allow the sealant to cure for 24 hours before
operating the appliance.
the male end. Also, run a similar size bead
of silicone sealant down the seam weld at
the end of each joint.
2. Pipes can now be pushed together as far
as they will go. The seams on the vent pipe
should be aligned and oriented upward in
all horizontal appliances. With a moistened
finger or flat tool, spread any sealant that
squeezes out around the circumference of
the joint.
3. Attach the sections together with the
locking rings and tabs (except at the blower
outlet where no
locking ring exists.)
Inspect the joint to ensure that flue gases
will not leak. If necessary apply additional
sealant around the joint.
4. Horizontal venting shall have a slope not
less than ¼” (6.4mm) every 12 inches
(305mm) downward away from the boiler to
prevent collection of condensate throughout
the assembly.
5. Allow the sealant to cure for 24 hours before
operating the appliance.
C.
For Flex-L StaR-34 Stainless Steel Vent Pipe
use a high temperature red silicone sealant
rated for 500°F. Before applying silicone, the
outside of the male end and inside of the female
end of the pipe must be cleaned using a cleaner,
such as methyl ethyl ketone (MEK) or
Naptha.
For 3” vent pipe runs, begin with the male end
of the vent pipe over the boiler’s induced draft
blower outlet. For 4” vent pipe runs begin with
a StaR-34 3” to 4” increaser fitting (#SR10304)
over the boiler’s induced draft blower outlet. For
both 3” and 4” vent pipe runs, apply a bead of
silicone sealant around the blower outlet and
around the inside of the male end of vent pipe
going over the blower’s outlet.
When using the Tjernlund VH-1 vent hood,
the female end (flared end) of the vent pipe
will be connected to the termination hood.
Summary of Contents for XEB-2
Page 36: ...85 Middle Rd Dunkirk NY 14048 ...
