Vent And Air Intake Pipe Starter Adaptors - Pp(S) - Viessmann Vitocrossal 300 CU3A Installation Instructions Manual

CU3A Venting Systems Installation

Vent and Air Intake Pipe Starter Adaptors - PP(s)

Direct Venting (Two-pipe System)
Boiler vent terminals
CU3A 26, 35 3 in. (80 mm)
CU3A 45, 57 4 in. (110 mm)
Single PP(s) pipe sizes by manufacturers
M&G 3 in.
Duravent (80 mm)
PolyFlue 3 in.
(80 mm)
Z-Flex 3 in.
(80 mm)
Centrotherm 3 in.
(80 mm)
ECCO Mfg 3 in.
(80 mm)
Note: Vitocrossal 300 CU3A flue gas terminations are
predesigned for PP(s) vent pipes. See vent
manufacturers sizes.
Note: When using PP(s) material for combustion air
supply, CPVC adaptors are not required.
Flue gas Combustion air
3 in. (80 mm)
3 in. (80 mm)
Transition adaptor
110 to 100 required
4 in.

(100 mm)
4 in.

(100 mm)
4 in.
--
(110 mm)
4 in.
--
(110 mm)
4 in.
--
(110 mm)
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