Bosch Worcester 15SBi Installation And Servicing Instructions page 15

Fig.20. Mid-position diverter valve
(Optional)
IMPORTANT
DO NOT REMOVE
THIS CLIP!
1. Flow manifold assembly
2. Clips (Removable)
3. Diverter valve connector plug
4. Earth connection
5. Mid-position diverter valve
6. Valve status indicator
7. Manual operating switch
If L>725mm then extension duct kit/s will be required - each kit
extends the flue by 750mm up to a maximum of 4m. See table
below.
EXTENSION
1
2
3
4
5
11.8 Measure and Cut the Ducts.
General: Cut the ducts as necessary, ensuring that the ducts are
square and free from burrs. Always check the dimensions before
cutting.
Measure the distance L. Refer to Fig.24 and 25.
The standard flue can be telescopically adjusted to any length
Fig.21. Flue turret fixing and automatic
air vent.
1. Flue spigot fixing screws
2. Flue spigot
3. Restrictor ring
4. Flue spigot fixing holes
5. Combustion sensing
point
6. Automatic air
vent
6
24SBi - 75mm horizontal and vertical flue up to 1m
15SBi - 74mm horizontal flue up to 1m
15SBi - 79mm vertical flue up to 1m
1
2
MAXIMUM FLUE LENGTH mm
1475
2225
2975
3725
4000
5
Restrictor Ring Sizes
4
6
3
7
between 425mm and 725mm.
Fix the flue assembly together using the self-tapping screws
provided. Refer to Fig.22.
It will only be necessary to cut the standard assembly if
L<425mm. Cut the flue turret assembly and the terminal
assembly by the same amount i.e L=350 - remove 75mm from
each assembly.
Minimum side flue length = 335mm
10mm Service clearance and a 100mm wall)
Minimum rear flue length = 296mm
100mm wall)
If L is between
not necessary to cut the ducts.
Fig.22 . Standard flue assembly.
1
2
3
Turret
assembly
4
Appliance casing
15
5
(accommodating a
(accommodating a
1175 - 1475mm (1 extension)
1925 - 2225mm (2 extension)
2675 - 2975mm (3 extension)
3425 - 3725mm (4 extension) it is
L
Fixing screw
Telescopic
adjustment
Terminal
assembly