Install Instructions

12
a. Clean the male end of each joint using an
alcohol pad to remove any dirt and grease.
b. Apply a continuous ¼ inch bead of sealant
around male end of joint no more than 1/8
inch from end.
c. Align weld seams in pipes and use a slight
twisting motion to FULLY insert male end
into female end of joint. Ensure bead in male
3. Provide and maintain minimum clearances to
combustible materials. Use single wall thimble
(Part No. 8116116) when penetrating combustible
wall. Other wall thimble manufacturers are
American Metal Products, Hart & Cooley, and
Metal Fab.
4. Once a vent pipe manufacturer and system is chosen
never mix and match vent systems.
5. If a non-standard length pipe is required, the use of
the adjustable length pipe (P/N 8116319U) is
recommended to complete a non-standard pipe
length. This pipe requires a minimum installed
length of 12¾ inch and can adjust across a 7 inch
gap up to a maximum of 19¾ inch long. (Note for
the adjustable pipe the installed length should be
measured from the centerline of the bead on the
maleendoftherstpipetotheendofthefemale
pipe excluding the locking band of the second pipe
with a single gasket.)
WARNING
Never exceed maximum installed length of 19¾
inches for adjustable length pipe.
Risk of ue gas leakage is possible.
Only in the event the adjustable length pipe is not
sufcientastandardlengthpipemaybecutusing
the following procedure.
Carefully cut pipe to length using a hacksaw with
minimum 32 teeth per inch or circular saw with
metal abrasive wheel. Remove male (bead) end
only–female(bell)endacceptsnextttingorpipe.
NOTICE
Cut must be square with pipe and led or
sanded smooth before joining. Carefully ensure
roundness of cut pipe by hand with gloves
before installing. Seal joint with RTV specied
in this manual.
6. Seal all U.S. Boiler Company Gasket-Less vent, U.
S. Boiler Company mixed vent (Gasket-Less and
Gasketed)andeldcutjointsusingDowCorning
Silastic 732 RTV, Dow Corning Silastic 736 RTV,
GE RTV106, Polybac #500 RTV, Sil-bond RTV
4500 (Acetoxy) and Sil-bond RTV 6500. Do not
use other adhesives or sealants.
E. Install Vent Pipe, U.S. Boiler Company Gasketed
Vent System.
1. Procedure for Joining U.S. Boiler Company
Gasketed Vent Pipe and Fittings. See Figure 8A.
a. Wipe the male end of each joint using an alcohol
pad to remove any dirt and grease.
b. Align weld seams in pipes and use a slight
twisting motion to FULLY insert male end into
female end of joint. Ensure bead in male end of
pipe is below locking band and rest against the
end of the female pipe. Verify the factory-
installed gasket is not dislodged or cut.
c. Tighten locking band by HAND with a 5/16" nut
driver until snug plus ¼ turn. DO NOT
SECURE JOINTS WITH SHEET METAL
SCREWS OR POP RIVETS. DO NOT
PUNCTURE THE VENT SYSTEM!
d. Once the installation is complete, operate boiler
andinspectalljointstoensurethatuegases
and/or liquid condensate will not escape.
F. Install Vent Pipe, U.S. Boiler Company Gasket-Less
& Gasketed Vent System.
1. Procedure for joining the male end of U.S. Boiler
Company Gasket-Less Vent with the female end of
U.S. Boiler Company Gasketed Vent. See Figure
8B.
Figure 8B: U.S. Boiler Company Gasket-Less Male and
Gasketed Female Vent Joint Detail
V. Venting (continued)
Figure 8A: U.S. Boiler Company Gasketed Vent Joint Detail