Weil-McLain Evergreen EVG 70 Manual page 24

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Venting & air — general
Figure 23 Vent and air piping materials — Use only the materials listed below, ensuring that all materials meet
local codes (see Figure 110, page 127 for part/kit numbers)
Item
Plastic piping materials
Vent or air pipe
&
fi ttings
PVC & ABS pipe
cement & primer
Simpson-Duravent — Obtain all materials from M&G
Polypropylene
Simpson-Duravent
vent pipe, fi ttings,
Centrotherm Eco Systems InnoFlue
terminations and
Obtain all materials from Centrotherm
cement
Note: See page 127 for correct appliance adapters to be used.
Vent pipe
AL29-4C
stainless
steel
Weil-McLain stainless steel bird screens, 2" or 3" (purchase separately) — see Figure 110, page 127 for part numbers
Note 1: Weil-McLain concentric vent kits are made from PVC pipe
and fi ttings.
Note 2: System 636 PVC concentric terminations utilize PVC
pipe/fi ttings certifi ed to ULC S636.
If ULC S636 compliance is required, use only System 636
pipe, fi ttings and cement.
DO NOT mix piping from diff erent pipe manufacturers
unless using adapters specifi cally designed for the purpose
by the manufacturer.
Every joint on polypropylene vent piping must
a locking collar.
DO NOT use cellular core PVC (ASTM F891), cellular core
CPVC, or Radel ®
DO NOT cover non-metallic vent pipe and fi ttings with
thermal insulation.
24
as-fired water boiler —
Material
PVC schedule 40
PVC-DWV schedule 40 (Note 1)
CPVC schedule 40 (Note 1)
PVC
CPVC (Note 1)
®
AL29-4C stainless steel piping materials
Heat Fab, Inc. — Saf-T-Vent
Z-Flex, Inc. — Z-Vent II
Dura-Vent — FasNSeal™
Metal-Fab, Inc. — CORR/GUARD
Centrotherm Eco Systems — InnoFlue
(polyphenolsulfone) in venting systems.
USE SWEEP ELBOWS FOR ALL VENT AND AIR PIPING — DO NOT use short
radius elbows for vent or air piping. Boiler performance could be aff ected.
ALL vent and air pipes require a
the bird screens. Purchase bird screens separately from Weil-McLain or vent kit supplier if
not included. [Note — bird screening is integral to the 3" PVC Weil-McLain sidewall vent
cap, available for purchase from Weil-McLain.
70/110/155
(continued)
United States
Vent or air piping
ANSI/ASTM D1785
ANSI/ASTM D2665
ANSI/ASTM F441
ANSI/ASTM D2564/F656
ANSI/ASTM F493
See manufacturer's literature for
detailed information
Single-wall —
MUST USE LOCKING
COLLAR ON EVERY JOINT
®
Certifi ed for Category IV and
direct vent appliance venting
®
ADAPTERS — AL29-4C piping — Install a PVC-to-stainless
adapter supplied by the AL29-4C stainless pipe
manufacturer at the 3" PVC boiler vent connection
and at the termination (if using Weil-McLain plate or
concentric PVC termination).
ADAPTERS — Polypropylene piping — Provide adapters
from polypropylene pipe to the 3" PVC connections at
the boiler and at terminations, if required (Weil-McLain
include
sidewall plate, for example).
ADAPTERS — If using 2" piping, where approved for
the application, provide adapters for the 3" PVC boiler
connections and at the terminations, if required (Weil-
McLain sidewall plate, for example)
BIRD SCREEN at each termination
Boiler Manual
Standards for installations in:
Canada
Vent
piping
ULC S636
NA
ULC S636
ULC S636
ULC S636
ULC S636
Certifi ed for Category IV and direct
vent appliance venting
. Most kits do not include
No additional screening is required.]
Part number 550-100-191/0917
(Note 2)
Air
piping
PVC, PVC-DWV,
CPVC or
polypropylene
Use only cement
and primer
suitable for piping
material used
PVC, PVC-DWV,
CPVC or
polypropylene