Installation guide

Direct Venting (Two-pipe System)
54
Vent Pipe Starter Adaptors
Parallel vent pipe starter adaptors
for WB2B 17-45, 17-60
Legend
Air intake, max. insertion 2½” /
64mm (use sheet metal screws to
hold in place)
Viessmann parallel adaptor
CPVC slip joint starter adaptor
a 3” / 76mm
b 2¾” / 70mm
c 7” / 178mm
d approx. 9
3
/
8
” / 237mm
e 4¾” / 120mm
Parallel vent pipe starter adaptors
for WB2B 30-80, 30-105
Legend
Air intake, max. insertion 2½” /
64mm (use sheet metal screws to
hold in place)
Viessmann parallel adaptor
CPVC slip joint starter adaptor
a 4” / 100mm
b5
1
/
8
” / 130mm
c9
3
/
8
” / 237mm
d approx.12” / 305mm
e 5½” / 140mm
5368 815 v2.0 b
Fig. 44
AirFlue
a
a
e
b
c
d
Fig. 45
Air
Flue
a
a
e
b
c
d