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Modulex Light Commericial Series
CHAPTER 4: Installation Instructions
The flue venting pipe is affixed to the adapter using high temperature RTV and then clamped
with a worm-driven Hose Clamp.
When using non-metallic (plastic) venting materials, use Schedule 40 or thicker Single-wall,
uninsulated pipes. When using non-metallic (plastic) vent systems for Canadian installations,
per CSA B149.1, use vent systems that are certified to the standard for Type BH Gas Venting
Systems, ULC-S636.
The plastic components, primers and glues of the certified vent system must be from a single
system manufacturer and not mixed with other manufacturer's vent system parts.
The Inspection Port should be plugged with an appropriate plug (not included).
4.23 COMBUSTION AIR AND VENTILATION OPENINGS
Provisions for combustion and ventiiation air must be made in accordance with section 5.3, Air
for Combustion and Ventilation, of the National Flue Gas Code, ANSI Z223.1/NFPA 54., or
Sections 7.2, 7.3 or 7.4 of CAN/CSA-B149.1-05, installation codes, or appilcable provisions of
the local building codes.
Insufficient Ventilations and Combustion Air
BOILER DAMAGE AND OPERATIONAL FAILURES may occur due to insufficient or improper
openings for combustion air and/or ventilation of the boiler room.
Provisions for combustion air and ventilation are always required, regardless of whether the
combustion air is taken from the outside (sealed combustion) or inside (room air used as
combustion air).
Insufficient ventilation of the boiler room can lead to high air temperatures. This can result in
boiler damage. Note the following:
• Make sure that intake and exhaust openings are sufficiently sized and no reduction or
closure of any openings takes place.
• When a combustion air or ventilation problem is not resolved, do not operate the boiler.
• Please note these restrictions and its dangers to the operator of the boiler.
OMM-0087_J • GF-143 • 11/17/2020
FLUE VENT PIPE
INSTAL FLUE PIPING
TO ADAPTER WITH
RTV LIQUID
SILICONE AND
WORM-DRIVEN
HOSE CLAMP.
ADAPTER ASSEMBLY
EUROPEAN TO AMERICAN
STANDARD FLUE
ADAPTER
Figure 4-26: Installed Flue Exhaust
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
Test Nipple
should be
installed
within first
3 feet of
flue start.
See Figure
4-24.
Page 52 of 150
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