P/N 42-9540 11/12 Copyright 2012 Hydrotherm
Page 17
KN INSTALLATION INSTRUCTIONS FOR VENT AND AIR PIPING
Vent piped through a side wall
(combustion air from the boiler room)
(cont.)
4
Figure 11
Termination minimum clearances
5 — Sidewall termination
(see Figure 11)
❑
See Table 4 for part numbers of the sidewall termination components required for
EZ-Seal vent pipe installations. Th e vent termination must be constructed using
the stainless steel vent materials listed in Table 4 to ensure the confi guration is
correct. DO NOT terminate the air piping with any other method.
A.
Wall thimble
— Use only the thimble listed in Table 4. Th e hole in the
thimble will prevent the pipe length (
B
) from being pushed inward. Th e
raised portion of the pipe female end is too large to pass through the hole in
the thimble. Follow the vent pipe manufacturer’s instructions supplied with
the thimble. If the wall thimble isn’t long enough for the application, follow the
vent manufacturer’s instructions to add an extension.
Noncombustible walls
— For noncombustible walls ONLY, you can omit
the thimble. For this option,
attach a storm collar on both the inside and
outside walls at the penetration
. Before att aching the collars, seal around
the vent pipe thoroughly with silicone RTV to prevent air leakage or insect
access. Th e storm collar tightens around the vent pipe with a gear clamp. Th is
prevents movement of the fi nished assembly. You will still need to use the
length of vent pipe and the termination elbow described below.
B. Length of vent pipe
— Use a 1-foot length of vent pipe as listed in Table 4
unless the wall penetration quires a longer length. If a longer length is required,
use a length of EZ-Seal long enough for the application.
Insert the pipe from OUTSIDE, male end fi rst. Th e pipe will stop at the raised
section of the female end.
C. Gear
clamp
— Use a hose clamp or a gear clamp manufactured by the vent
manufacturer (see Table 4).
Slide the clamp over the male end of the pipe aft er the pipe has been inserted
from outside.
From the inside, pull the pipe so it is fi rmly against the outside plate.
Push the gear clamp against the inside plate and tighten securely. Th is will
prevent the termination assembly from being pushed outward.
D. Termination
elbow
— Use only the termination elbow listed in Table 4. Th e
elbow must be pointed downward.
Before inserting the male end of the elbow into the pipe, apply a bead of
silicone RTV and spread around the end.
Insert the termination elbow and secure using the vent pipe manufacturer’s
joint assembly procedure.
Termination location — Install the vent pipe termination where it meets the
minimum clearances shown in Figure 12.
Exiting below grade or snow line
— See Figure 13. When the vent pipe
must exit the building grade or below the minimum height for the termination
elbow, install vertical piping as necessary for the termination elbow to be high
enough to meet the minimum clearances of Figure 12. Make sure to support
the piping using wall brackets available from the vent pipe manufacturer.
If the pipe extends more than 3 feet, insulate the external portion of the pipe
and fi tt ings with at least 1/2-inch closed-cell foam polyolefi n pipe insulation.
Combustion air openings
❑
Combustion air must be supplied from the boiler room as
shown in Figure 1. Make sure the installation provides air
openings as required by applicable codes and the Boiler
manual.
Multiple boiler installations
❑
Install multiple vents through the side wall following all
guidelines for single-vent installations.
❑
Install the vents so they are no closer than 12 inches
(305 mm)
on centers.
