Intertek FT Series - Existing Stainless Steel Venting

The FT Series Floor Standing, Heating Only Boiler
Page 27
changed, 45° o󰀨set ttings will be required to bring the
centerline of the FT vent forward to align with the
existing vent assembly.
Venting Assembly Process:
NOTE:
Follow the detailed instructions supplied with
the Heat-Fab SC series venting components during
the assembly process.
1)
Start the vent assembly process by installing the
Dual pipe to concentric adaptor, kit FT3006. (See
previous page). Ensure that the ttings are clean,
moisten and insert the Dual pipe to concentric adaptor
into the FT boiler sockets until they bottom out.
Tighten the clamps on the boiler vent connectors.
2)
To create the o󰀨set, if necessary, moisten the
internal gasket and insert the plain end of a SCO3E45
tting into the socket end of another. Take care that
the orientation is such that the o󰀨set is as indicated
and the inserted end bottoms out in the other socket
tting. Install the self-tapping screws into the predrilled
holes.
3)
If the o󰀨set is required, clean mating surfaces with
alcohol swap provided and moisten the socket gasket
on the SCO3E45 assembly, and install the assembly
onto the Dual pipe to concentric adaptor and secure
with self-tapping screws. Clean with the swap and
moisten with water. Moisten the seals on all the other
seals throughout the Venting System assembly, as
you move on.
4)
The transition between the Dual pipe to concentric
Adapter and the existing vent system will be made
with P/N SCO3AJ telescoping adjustable concentric
straight length to adjust to the di󰀨erence between the
location of the top of the Dual pipe to concentric
Adapter and the bottom of the existing vent system.
This adjustable length pipe is required regardless if
the o󰀨set ttings are required or not. Install the
SCO3AJ and adjust the length to connect to the
remaining parts of the existing vent system and secure
by installing the self-tapping screws in the pre-drilled
openings.
5)
After adjusting the slope, install a SCO3E90
elbow and a SCO3AJ telescoping adjustable
concentric straight length to adjust to the existing
horizontal venting. Adjust the SCO3AJ to connect to
the existing vent system and secure by installing the
self-tapping screws in the pre-drilled openings.
(Refer to Table 6, page 25, for component
descriptions).
5)
After completion of the venting system, review all
joints of the venting installation and make sure that all
locking screws of the adjoining vent sections are all
properly installed.
4.10.3 Stainless-Steel Concentric Venting Utilizing
Existing Stainless Steel Venting.
There might be existing boiler installations that have a
Heat Fab SC 3" x 5" concentric venting system. It
might be possible to re-use portions of that venting
system.
Carefully inspect the original system before deciding
to use it. The near boiler portions of the venting
system will need to be replaced in order to connect to
the new FT boiler.
Determine the routing of the venting system and
measure the required lengths of horizontal and vertical
runs. Keep in mind that telescoping pieces may be
required as most piping sections can not be trimmed
to length.
NOTE:
If the existing vent system is horizontal and
terminated by a “Vent Terminal Extension” on the
outside wall of the building, that “Vent Terminal
Extension” including a downward exhaust termination
is not appropriate for a condensing boiler like the FT
Boiler and the entire system will need to be replaced.
Refer to Section 4.10.2 for detailed instructions for
installing a completely new concentric stainless steel
venting system. (See Section 4.10.4 for installing a
completely new concentric Duravent PP concentric
venting system).
If the existing venting system is a horizontal run, the
slope of that system will need to be changed. As
installed, that system required a downward slope of
¼” per foot toward the outside wall. The venting
system for FT boiler requires a slope of 3/8” per foot
back toward the boiler so that condensate will drain
back to the boiler and be eliminated. To change the
slope, the vent pipe hangers will need to be adjusted
or replaced.
The centerline of the ue on the FT boiler is 3.9” (99
mm) from the back of the boiler cabinet. The centerline
of the ue on the existing boiler is 9” (229 mm) from
the back of the boiler cabinet. If the FT boiler can be
installed so that its cabinet back is 5” (127 mm) further
forward from the back wall than the existing boiler,
then the FT boiler vent and the venting system will be
in alignment. If, however, the boiler location for the FT
boiler, with respect to the back wall, cannot be