Approved Venting Materials; Coaxial - UTICA BOILERS UCS 380 Installation, Operation And 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
• Canada - Natural Gas and Propane Installation Code,
CAN/CSA B149.1
Follow venting manufacturer's equivalent lengths
Note
for specialty fittings.
A. Vent Material Options:
1.
110 /160 mm Polypropylene coaxial (4 inch / 6 inch)
or
2.
110 mm polypropylene twin pipe (MUST be polypropylene
on BOTH intake and exhaust) (4 inch) - conversion kit
required.
or
3.
4 inch CPVC (PVC optional intake only).
FIGURE 6-1 Coaxial Vent Screw Placement
6 - COMBUSTION AIR AND VENT PIPING
B. Approved Polypropylene Manufacturers:
Must comply with UL 1738 or ULC S636. The following
manufacturers have been evaluated:
• Natalini
• DuraVent
®
• Centrotherm
• Z-Flex
®
Note: Maximum equivalent length may vary between manufacturers.
C. Vent Termination
• Do not include terminations 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 intake termination as far as possible
from swimming pool, swimming pool pump house, and
other sources of airborne chlorine.
• Locate combustion air 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.
WARNING
!
Asphyxiation hazard. Before securing the screws
ensure the pipe has been pushed in a minimum of
1-3/4" (45 mm) into the gasketed end of the other
pipe. Failure to follow these instructions could result
in death or serious injury.

6.5 Coaxial

A. Coaxial 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
PN 240011662 Rev. K [01/31/2020]