Lennox GCWB95W-150 Installation Instructions

15
240012994 Rev. B [08/31/2020]
5.4 Approved Venting Materials
5 - COMBUSTION AIR AND VENT PIPING
5.5 Vent Termination
• Terminate combustion air and vent pipes with ttings or
coaxial vent kit.
Use horizontal pipe for vent and 90° elbow for
combustion air termination when using ttings.
• Separate vent terminal from air inlet terminal to prevent
ue gas recirculation. If T-Terminal is used on ue pipe
at sidewall, air inlet terminal shall be at least 36" or more
away from vent terminal.
• Locate combustion air termination as far as possible from
swimming pool, swimming pool pump house, and other
sources of airborne chlorine and other airborne chemicals
or pollutants.
• Locate combustion air and vent terminals as required by
authority having jurisdiction.
Vent Material Options
150 205
1 4" / 2" [100 mm / 60 mm] polypropylene coaxial. 1 5"/3" [125 mm/80 mm] polypropylene coaxial.
2
3" [80 mm] polypropylene twin pipe.
Shall be polypropylene on BOTH intake and
exhaust.
2
3" [80 mm] polypropylene twin pipe.
Shall be polypropylene on BOTH intake and
exhaust.
3
2" [60 mm] polypropylene twin pipe.
Shall be polypropylene on BOTH intake and
exhaust.
3
2" [60 mm] polypropylene twin pipe.
Shall be polypropylene on BOTH intake and
exhaust.
4
3" [80 mm] exible polypropylene for chimney
exhaust vent, shall have rigid 3" [80 mm]
polypropylene on air intake.
4
3" [80 mm] exible polypropylene for chimney
exhaust vent, shall have rigid 3" [80 mm]
polypropylene on air intake.
5
3" [80 mm] Twin pipe CPVC.
PVC optional on intake ONLY.
5
3" [80 mm] Twin pipe CPVC.
PVC optional on intake ONLY.
* Note: Adapters and ttings used with all vent systems shall be from same manufacturer and compatible with the vent
pipe. See list for approved Manufacturers.
Installation shall conform to requirements of authority having
jurisdiction or in absence of such requirements:
• USA - National Fuel Gas Code, ANSI Z223.1/NFPA 54.
• Canada - Natural Gas and Propane Installation Code,
CAN/CSA B149.1
WARNING
Manufacturer recommends this condensing boiler be
vented with approved polypropylene venting material.
Use only materials listed below for vent pipe, intake
air pipe, and ttings. Failure to comply could result in
death or serious injury.
!
WARNING
Do not use cellular core pipe. Only specied sized
pipes are to be used. When using venting material
other than boiler manufacturer's venting, note the
correct installation procedure. Failure to follow these
instructions could result in death, or serious injury.
!
WARNING
• Covering non-metallic vent pipe and ttings with
thermal insulation shall be prohibited.
• Use of cellular core PVC for venting ue gas could
result in death, or serious injury.
• Coaxial venting shall be fastened with screws. Dual
ue venting is NOT fastened with screws.
!
1. Venting shall be properly supported.
2. Boiler shall not support any type of vent system.
3. All piping, glue, solvents, cleaners, ttings and
components must conform to ASTM and ANSI standards.
In Canada ULC S636 and in the USA UL 1738 schedule 40
CPVC are the only approved vent system to be used as an
alternative to polypropylene venting for the exhaust pipe.
4. Manufacturer requires use of a mechanical fastener at
every push-t gasket connection when using a single wall
polypropylene vent system.
Approved Polypropylene Manufacturers
* Natalini
* DuraVent
®
*Centrotherm
* Z-Flex
®
Note: Maximum equivalent length may vary between
manufacturers.

Lennox GCWB95W-150 Specifications

General

Brand	Lennox
Model	GCWB95W-150
Category	Boiler
Language	English