Direct Venting (Two-pipe System)
45
Vent Requirements
(continued)
Additional requirements for stainless steel vent pipe material
(continued)
Table 31. Parallel adaptor for two-pipe system
Supplier
Boiler Model
Parallel pipe adaptor,
Part Number
Ø inches/mm
Qty.
Viessmann
H
WB1A 8-24, 8-30
7186032
(see Fig. 30)
3 / 76
1
H
WB2 6-24C, 6-24, 8-32
7189822
(see Fig. 31)
3 / 76
1
H
WB2 11-44, 15-60
7189823
(see Fig. 32)
4 / 102
1
Parallel vent pipe starter adaptors
for WB1A 8-24, 8-30
Legend
Air intake, max. insertion 2½” /
64mm (use sheet metal screws to
hold in place)
Viessmann parallel adaptor
Stainless steel slip joint vent
starter adaptor
a
3” / 76mm
b
3¼” / 83mm
c
7” / 178mm
d
approx. 10¾” / 271mm
e
4¾” / 120mm
Parallel vent pipe starter adaptors
for WB2 6-24C, 6-24, 8-32
Legend
Air intake, max. insertion 2½” /
64mm (use sheet metal screws to
hold in place)
Viessmann parallel adaptor
Stainless steel slip joint vent
starter adaptor
a
3” / 76mm
b
2¾” / 70mm
c
7” / 178mm
d
approx. 10¾” / 271mm
e
4¾” / 120mm
Parallel vent pipe starter adaptors
for WB2 11-44, 15-60
Legend
Air intake, max. insertion 2½” /
64mm (use sheet metal screws to
hold in place)
Viessmann parallel adaptor
Stainless steel slip joint vent
starter adaptor
a
4” / 100mm
b
5
1
/
8
” / 130mm
c
9
3
/
8
” / 237mm
d
12
7
/
8
” / 327mm
e
5½” / 140mm
5
2
8
5
2
6
8
v
3
.8
Fig. 30
a
b
c
d
Flue Air
a
e
Fig. 31
a
c
d
b
Flue Air
a
e
Fig. 32
Flue
Air
b
c
d
a
a
e
Summary of Contents for Vitodens 100-W WB1A-24
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