Bosch WBN 6000-24 CR - Selecting the Fan Stage; B22 Horizontal Flue Gas Routing; B22 Vertical Flue Gas Routing

Flue gas routing
Gaz 6000 W – 6720866247 (2019/07)
12
4.3 Selecting the fan stage
The devices are matched to the flue length by setting the fan stages.
▶ Select the fan stage according to the type of flue gas routing,
appliance type and flue length ( tab. 7 to 12).
▶ Set the fan stage with the service function 2.bd ( chapter 11,
page 26).
4.3.1 B
22
horizontal flue gas routing
NOTICE:
Poor combustion if restrictor is not installed.
▶If B
22
flue gas routing is used and appliance output < 35 kW, install
restrictor (accessory 7 736 995 123).
▶If B
22
vertical flue gas routing is used and appliance output = 35 kW,
install restrictor (accessory 7 736 900 818).
Fig. 4 B
22
horizontal flue gas routing
The 90° elbow on the device is taken into account in the maximum
lengths.
• Each additional 90° elbow is equivalent to 2 m.
• Each additional 45° elbow is equivalent to 1 m.
Table 7 B
22
horizontal flue gas routing
4.3.2 B
22
vertical flue gas routing
Fig. 5 B
22
vertical flue gas routing
NOTICE:
Poor combustion if restrictor is not installed.
▶If B
22
flue gas routing is used and appliance output < 35 kW, install
restrictor (accessory 7 736 995 123).
▶If B
22
vertical flue gas routing is used and appliance output = 35 kW,
install restrictor (accessory 7 736 900 818).
• Each additional 90° elbow is equivalent to 2 m.
• Each additional 45° elbow is equivalent to 1 m.
Table 8 B
22
vertical flue gas routing
L [m] Fan stage
WBN 6000-24 ≤2 14
2– 5 16
5– 9 18
9 – 12 19
12 – 15 20
WBN 6000-28 ≤2 3
2– 5 16
5– 9 17
9 – 15 20
L
0 010 005 934-001
WBN 6000-35 ≤2 5
2– 5 6
5– 9 7
9 – 12 8
L [m] Fan stage
WBN 6000-24 ≤2 16
2– 5 18
5– 9 19
9 – 15 20
WBN 6000-28 ≤2 4
2– 5 14
5– 9 17
9 – 15 20
WBN 6000-35 ≤2 8
2– 5 12
5– 9 14
9 – 12 18
L [m] Fan stage
L
0 010 005 933-001