Optional Horizontal Venting Instruction - ECR International PENNCO FSB 3 Series Installation, Operation & Maintenance Manual

9. Support Spacing:
Do not restrict thermal expansion movement of the
vent. Vent pipe must expand and contract freely with
temperature change. Each run of vent piping shall be
supported as follows:
A. Z-Flex stainless steel vent piping requires a loose
fitting metal strap or similar support at each joint
at a maximum of 4 feet between supports.
B. Heat-Fab stainless steel vent piping requires a
support for every 6 feet of horizontal piping run.
The support must be secured using at least #10
fasteners to a solid material (solid masonry or
wood framing or blocking.) Do not fasten to drywall
sheathing using hollow wall anchors. Each support
will be 1½ inch lower than the previous support
when spaced 6 feet apart.
C. Flex-L stainless steel vent piping requires a loose
fitting metal strap or similar support at each joint
at a maximum of 4 feet between supports.
D. ProTech stainless steel vent piping requires one
loose fitting FasNSeal support strap for every 6' of
horizontal vent.
9�1 Optional Horizontal Venting
Horizontal venting with a power venter is an alternate
method of sidewall venting. This boiler is CSA listed for
sidewall venting with standard single wall galvanized or
Type B vent pipe when using the following power venter
kits, which were specifically sized for these boilers:
Table 4 - Field Controls
Number Of
Boiler Sections
2, 3, 4, 5
6
* SWG-5 requires purchase of CK-43F control kit.
Reasons for the use of a power venter for sidewall venting:
1.
Preferred by some local codes.
2.
Installation requires a vent piping run more than 30'
(9.1 m) (less than 50' (15.2 m)).
3.
Boiler installation site experiences gusting or high
winds. Power venter can prevent boiler from short
cycling due to gusting or high winds, by providing vent
exhaust pressures greater than boiler's induced draft
blower alone.
4.
Installers or homeowners prefer negative pressure vent
system instead of positive pressure vent system.
5.
May be more cost effective than stainless steel venting,
particularly at longer vent length. Field control SWG-
4 Power Vent Kit includes: SWG-4HD Power venter,
MG-1 4" barometer draft controller and CR-43F controls
kit. Purchase SWG-5 field controls power venter with
purchase of CR-43F control kit.
8 - HORIZONTAL VENTING INSTRUCTIONS

9 - OPTIONAL HORIZONTAL VENTING INSTRUCTION

Field Controls
Power Venter
SWG-4
*SWG-5
10. If horizontal vent must go through a crawl space or
other unheated space, cool temperatures will cause
flue gases to continuously condense inside the vent
pipe. Do not insulate the vent pipe. It must be visible
for monthly inspection. Insure that the vent pipe is
properly pitched away from the boiler, with no low
spots, so that condensate in the vent will drain away
from the boiler. An insulated enclosure or chase, with
access for inspection and servicing of the vent, may
be required to prevent freezing of liquid condensate.
Consult the vent pipe manufacturer's instructions for
specific guidelines.
11.
At beginning of each heating season and monthly
during the heating season, check all vent pipes and
vent terminal to make sure there are no obstructions.
Periodically clean the screen in the vent terminal.
• Confirm installation of a power venter is allowed by local
codes.
• Follow power venter manufacturer installation
instructions supplied with power venter kits.
• Although power venter is equipped with a fan, the fan on
boiler remains and unaltered when using a power venter.
• When sidewall venting, flue gases shall be vented to
point in relation to the prevailing wind to disperse flue
gas into the air without being blown back at the building
causing discoloration, or into the building through doors
or windows causing odors.
• Under certain conditions flue gases will condense forming
moisture. Take steps to prevent building materials at the
vent terminal from being damaged by exhausted flue gas.
• When installing single wall galvanized vent pipe for power
venting follow manufacturer's power venter installation
instructions for layout, and location of barometric draft
control and termination connections.
• When joining and sealing single wall galvanized or Type
B vent piping, use RTV silicone sealant with minimum
temperature rating of 400°F.
A. 3" vent pipe runs, start with female end of the vent
pipe over boiler's induced draft blower outlet.
B. 4" vent pipe runs start with supplied galvanized 3"
to 4" increaser fitting over the induced draft blower
outlet. Place female end of 4" vent pipe over the
increaser fitting.
• When joining pieces of single wall galvanized vent pipe,
use a large bead of silicone at the joint to ensure leak
proof connection.
21
PN 240013101 Rev. A [08/15/2020]