U.S. Boiler Company ESC, Installation, Operating And Service Instructions

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Special Instructions for Stainless Steel Direct Vent
USE STAINLESS STEEL VENTING
only with boilers approved for use
with stainless steel venting as noted in the
Specifications
Section of this manual.
AL 29-4C
®
stainless steel vent systems resist
the corrosive effects of high temperature acidic
flue gas condensate and are leak-tight. Alternate
stainless steel venting systems require special
adaptors to connect to the parts supplied with the
boiler. Obtain the adaptors from the supplier of the
alternate manufacturer’s venting system. Approved
alternate brands are:
(1)
Heat-fab Inc
–
Saf-T- Vent
800-772-0739
(2) Flex –L International Inc . – Star 34
800- 561-1980
(3) Z-Flex U.S. Inc. – Z-Vent
800-654-5600
(4)
Protech Systems, Inc.
–
FasNSeal
800-766-3473
Installing Stainless Steel Vent
1.
Follow all general warnings and instructions
for Direct Vent systems described in the
opening section of Appendix B2 Direct
Venting
. Start at the vent connector on the
boiler and work towards the vent terminal.
2.
Select stainless steel vent components from
Table B-1.
3.
Verify that the vent and air intake
components do not exceed the boiler’s
maximum allowable equivalent venting
length, and do not fall below the boiler’s
minimum equivalent venting length, using
the worksheet on the following page.
4.
If a non-standard length is required, there
are two options:
(1) Select adjustable length pipe from Table
B-1. The pipe adjusts 7” from 12 ¾” to
19 ¾”. Or,
(2) Cut the non-gasketed end of a standard
straight length. Make a square cut and
file the end smooth.
Table B-1: Vent System and Air Intake
System Components
Vent System Component Part Number
3” Dia. Pipe x 1 Ft 8116296U
4” Dia. Pipe x 1 Ft 100176-01
3” Dia. Pipe x 3 Ft 8116298U
4” Dia. Pipe x 3 Ft 100177-01
3” Dia. Pipe x 5 Ft 8116300U
4” Dia. Pipe x 5 Ft 100178-01
3” Dia. Pipe x Adjustable 8116319U
4” Dia. Pipe x Adjustable 100179-01
3” Dia. 90° Elbow 8116294U
4” Dia. 90° Elbow 100180-01
3” Dia. 45° Elbow 8116292U
4” Dia. 45° Elbow 100181-01
3” Dia. Horizontal Drain Tee 8116302U
4” Dia. Horizontal Drain Tee 100182-01
3” Dia. Vertical Drain Tee 8116304U
4” Dia. Vertical Drain Tee 100183-01
3” Single Wall Thimble 8116116
4” Single Wall Thimble 100184-01
3” Double Wall Thimble 103877-01
4” Double Wall Thimble 100185-01
APPENDIX B2 – Direct Venting (continued)
5.
Remove dirt and grease from the male end
of the joint using an alcohol pad.
6.
Align weld seams in pipes and use a slight
twisting motion to fully insert the male end
into the female end of the joint.
DO NOT DISLODGE, SCRATCH,
OR CUT THE FACTORY GASKET.
7
. Tighten locking band by hand with a 5/16”
nut driver, plus ¼” turn past snug, ensuring
that the locking band fully captures the bead
in the pipe.
horizontal Stainless Steel Vent Installations
1.
Install vent and intake piping per Figure B-3.
2.
Where the vent pipe penetrates any
combustible wall (Figure B-4):