Approved Venting Materials - Dunkirk DMG-240 Installation, Operation & Maintenance Manual

!
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 fittings. Failure to comply
could result in death or serious injury.
!
WARNING
ABS/PVC venting shall not to be used this product.
Use of DWV plumbing pipes to vent this boiler shall
be prohibited.
Use of cellular core PVC (ASTM F891), cellular core
CPVC, or Radel® (polyphenolsulfone) in venting
systems shall be prohibited.
Covering non-metallic vent pipe and fittings with
thermal insulation shall be prohibited.
Failure to follow these instructions could result in
death or serious injury.

6.4 Approved Venting Materials

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.
A. Vent Material Options:
1.
80 mm/125 mm Polypropylene concentric (5 inch / 3 inch)
or
Follow venting manufacturer's equivalent lengths
Note
for specialty fittings.
80 mm polypropylene twin pipe (MUST be polypropylene on
BOTH intake and exhaust) ("3 inch")- conversion kit required.
or
3" Twin pipe CPVC (PVC optional on intake ONLY).
B. Approved Polypropylene Manufacturers:
Must comply with UL 1738 or ULC S636. The following
manufacturers have been evaluated:
CONCENTRIC VENT SCREW PLACEMENT
6 - COMBUSTION AIR AND VENT PIPING
• Natalini
• DuraVent
®
• Centrotherm
• Z-Flex
®
Note: Maximum equivalent length may vary between
manufacturers.
C. Vent Termination
• Do not include termination for equivalent length
calculations.
• Terminate combustion air and vent pipes with fittings or
concentric vent kit.
Use horizontal pipe for vent and 90° elbow for
combustion air termination when using fittings.
• Separate vent terminal from air inlet terminal to prevent
flue gas recirculation. If T-Terminal is used on flue 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.
• Locate combustion air intake and vent terminals as
required by authority having jurisdiction.
• Use black ultra violet stabilized polypropylene when
exposed to sunlight, wind, or prone to freeze ups.
D. Concentric Vent Screw Placement
Fasten two (2) screws through the outer intake pipe behind
the gaskets at equal distances approximately 180º apart.
Use zinc coated sheet metal screws in accordance with vent
pipe manufacturer's instructions.
1.
Before securing the screws, verify pipe is inserted in
accordance with pipe manufacturer's instructions.
2.
When connecting vent pipes, follow vent pipe
manufacturer's instructions regarding lubrication.
21
P/N 240011656, Rev. E [07/30/2018]