Installation | 45
6 720 643 068 (2011/06)Copyright (optional information)
Vent should terminate at least 3 feet (915 mm) away from
adjacent walls, inside corners and 5 feet (1525 mm) below
roof overhang (Æ fig. 26 [X
2
], [X
4
], page 46).
It is not recommended to terminate vent above any door
or window, condensate can freeze causing ice formations.
Do not use chimney as a raceway if another boiler or
fireplace is vented into or through chimney.
All non-steel vent pipes must be glued, except for the flue
gas adapter-pipe connection.
All non-steel combustion air and vent pipe materials and
fittings must comply with the following and must be UL
approved venting material:
The exhaust pipe must be properly
supported and pitched a minimum of ¼ inch
(6.35 mm) per foot back to the boiler. This
allows the condensate to properly drain.
NOTICE: Damage of 2 inch PVC pipes.
B For ZBR42-3A and ZWB42-3A use 2 inch
CPVC-pipes or 3 inch pipes.
Material Item United states Canada
ZBR16-3A
ZBR28-3A
ZBR35-3A
ZBR42-3A
ZWB28-3A
ZWB42-3A
PVC schedule 40, 80
2" (50 mm) Vent
or air pipe and
fitting
ANSI/ASTM D1785
BH Gas venting
systems,
ULC S636
1)
1) Components of the certified vent systems must not be interchanged with other vent systems or unlisted pipe fittings. Plastic
components, and specified primers and glues of the certified vent system must be from a single system manufacturer and not
intermixed with other system manufacturer's vent system parts.
XXX X
PVC-DWV ANSI/ASTM D2665 XXX X
CPVC schedule 40, 80 ANSI/ASTM F441 XXXXXX
PVC schedule 40, 80
3" (76 mm) Vent
or air pipe and
fitting
ANSI/ASTM D1785 XXXXXX
PVC-DWV ANSI/ASTM D2665 XXXXXX
CPVC schedule 40, 80 ANSI/ASTM F441 XXXXXX
PVC
Pipe cement/
primer
ANSI/ASTM D2564 XXXXXX
CPVC ANSI/ASTM F493 XXXXXX
Tab. 18 Materials for pipe
Roof terminals Material Supplier Part number
Ø 3" / Ø 6" (Ø 76/150 mm) concentric PVC IPEX 196016
Tab. 19 Roof terminals
Wall terminals Flue System / Materials Supplier Part number
Ø 3" (Ø 76 mm) parallel stainless steel Flex-L 46546901
90°-elbow with
inlet screen
PVC (elbow)
stainless steel (screen)
IPEX (elbow)
Langly Wire (screen)
UL-S636 approval (elbow)
L2594 (screen)
Tab. 20 Wall terminals
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