Weil-McLain ECO 70 Manual page 20

TM -
G
AS FIRED WATER BOILER
Venting & air — general
Vent and air piping materials — Use only the materials listed below, ensuring that all materials meet
local codes (see Figure 109, page 107 for part/kit numbers)
Simpson-Duravent
Obtain all materials from Centrotherm
stainless
steel
Note 1: Weil-McLain concentric vent kits are made from PVC pipe
and fittings.
Note 2: System 636 PVC concentric terminations utilize PVC
pipe/fittings certified to ULC S636.
If ULC S636 compliance is required, use only System
636 pipe, fittings and cement.
DO NOT mix piping from different pipe manufacturers
unless using adapters specifically designed for the pur-
pose by the manufacturer.
polypropylene vent piping must
Every joint on
clude a locking collar.
DO NOT use cellular core PVC (ASTM F891), cellular
core CPVC, or Radel
systems.
DO NOT cover non-metallic vent pipe and fittings with
thermal insulation.
20
Material
PVC schedule 40
PVC-DWV schedule 40 (Note 1)
CPVC schedule 40 (Note 1)
PVC
CPVC (Note 1)
Obtain all materials from M&G
®
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
USE SWEEP ELBOWS FOR ALL VENT AND AIR PIPING — DO NOT use short
radius elbows for vent or air piping. Boiler performance could be affected.
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.
— Boiler Manual
(cont.)
ANSI/ASTM D1785
ANSI/ASTM D2665
ANSI/ASTM F441
ANSI/ASTM D2564/F656
ANSI/ASTM F493
See manufacturer's literature for
detailed information
MUST USE LOCKING
COLLAR ON EVERY JOINT
Certified for Category IV and
direct vent appliance venting
(purchase separately) — see Figure 109, page 107 for part numbers
ADAPTERS — AL29-4C piping — Install a PVC-to-stainless
adapter supplied by the AL29-4C stainless pipe manu-
facturer 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
in-
sidewall plate, for example).
ADAPTERS — If using 2" piping, where approved for the
application, provide adapters for the 3" PVC boiler con-
nections and at the terminations, if required (Weil-McLain
sidewall plate, for example)
BIRD SCREEN at each termination
(Note 2)
ULC S636
PVC, PVC-DWV,
NA
ULC S636
Use only cement
ULC S636
and primer
suitable for piping
ULC S636
material used
ULC S636
Certified for Category IV and direct vent
appliance venting
. Most kits do not include
No additional screening is required.]
Part number 550-142-122/0513
CPVC or
polypropylene
PVC, PVC-DWV,
CPVC or
polypropylene