Operating instructions

B,
For 3" vent pipe runs begin with the male end of the vent
pipe over the boilers induced draft blower outlet. For 4"
vent pipe runs begin with a 6" length of 3"Z-Vent over the
boiler's induced draft bloweroutlet, to which an evenbead
of high temperature silicone sealant shouldbe applied.
Thenconnect the 3" Z-Vent to a Z-Vent 3"to 4" reducer.
Thencontinue the 4"Z-Vent pipe run by connecting the
4" male end of the Z-Vent to the reducer. (A locking band
may be used around this joint for additional support.) Then
followingthe sealinginstructions, push the 4" male end of
the Z-Vent over the 4" increaserfitting. When using the
Tjernlund VH-1 vent hood, the female end (flaredend) of
the vent pipe will be connected to the termination hood.
Themale end of the vent hood must be crimped before
pushing the Z-Vent over the vent hood's connecting pipe.
Beforethe pipes are joined, apply a ¼"bead of siliconeone
inch from the end of the male end. Then push the pipes
together as far as they will go making sure any seams are
aligned and oriented upward. Now apply another bead of
silicone around this joint and smooth out. Then use aZ-
Flexlockingband around the centerof the joint.
1. Apply the high temperature silicone approximatelyone
inch from the end, around the male end of the pipe in
an even ¼"bead.
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5.
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Pipescan now be pushed together asfar as they will
go. Theseams on pipe should be aligned and oriented
upward in allhorizontal appliances. Applyanother bead
of siliconearound this joint and smooth out.
Slidelockingband over centerof joint and tighten gear
clamps.Makesure locking band is centered on joint.
Checkalljoints and seams for gas tightness.
Horizontal venting shall have a slope not less than ¼"
(6.4mm) every 12inches (305mm) downward away
from the boiler to prevent collection of condensate
throughout the assembly.
Allowthe sealant to cure for 24hours before operating
the appliance.
For Heat-Fab Saf-T-Ventstainlesssteelvent pipe use
a high temperature silicone sealantrated for 550°F
Theoutside of the male end and inside of the female
end of the pipe must be cleaned before applyingthe
siliconebead. For 3" vent pipe runs, the male end of
the vent pipe which goes overthe outlet of the boiler's
induced draft blower must be crimped. Thevent pipe
should be crimped as minimal aspossible to provide
a tight fit overthe outlet. After crimping is completed
followthe instructions forapplying silicone sealant.
For 4"vent pipe runs, begin with a Saf-T-Vent3" to 4" in-
creaser fittingoverthe boiler'sinduced draft bloweroutlet,
C,
to whichan even bead of high temperature siliconesealant
shouldbe applied. Thencontinue the 4" Saf-T-Ventpipe
run by connecting the 4" male end of the Saf-T-Ventto the
increaser.(A lockingband may be used around this joint
for additional support.) Thevent flowmust be in the direc-
tion indicated on the vent pipe. When using the Tjernlund
VH-1 vent hood, the female end (flaredend) ofthe vent
pipe willbe connected to the termination hood. Applyhigh
temperature silicone in an even ¼" bead approximately¼"
to 3/8"from the end of the vent hood's connecting vent pipe.
Also, run a similar sizebead of silicone sealantdown the
seamweld of the vent pipe. Thenpush the female end over
the vent hood'sconnecting vent pipe.
1. Apply the high temperature siliconearound the male
end of the pipe (without the tabs) in an even ¼"bead.
Siliconebead should be approximately ¼"to 3/8"from
the end of the male end. Also,run a similarsizebead of
silicone sealantdown the seamweld at the end of each
joint.
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Pipes can now be pushed together as far as they will
go. Theseams on the vent pipe should be aligned and
oriented upward in allhorizontal appliances.With a
moistened fingeror fiat tool, spread anysealant that
squeezesout around the circumference of the joint.
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Attach the sections together with the locking rings and
tabs (except at the bloweroutlet where no locking ring
exists.) Inspect the joint to ensure that flue gaseswill
not leak.If necessaryapply additional sealant around
the joint.
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Horizontal venting shallhave a slopenot lessthan ¼"
(6.4mm) every 12inches (305mm) downward away
from the boiler to prevent collection of condensate
throughout the assembly.
5. Allowthe sealantto cure for 24 hours before operating
the appliance.
For Flex-LStaR-34stainless steelvent pipe use a high
temperature siliconesealant rated for 550°F.Beforeapply-
ing 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 bloweroutlet. For 4" vent
pipe runs begin with a StaR-343"to 4" increaser fitting
over the boiler's induced draft bloweroutlet. For both
3" and 4"vent pipe runs, apply a bead of silicone seal-
ant around the blower outlet and around the inside of
the male end of vent pipe going overthe blower's outlet.
When usingthe Tjernlund VH-1 vent hood,the
female end (flared end) ofthe vent pipe
willbe connected to the termination hood.