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INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH
20
FLUE INSTALLATION
8-716-106-252a (03.05)
The flue can exit the boiler from outlets A, B, C or
D allowing vertical (RS) and horizontal (RS low or
high level) flues to be fitted. (CF position 'A' only).
Refer to the separate flue installation instructions
supplied with the flue kits available for this boiler:
RS FLUE KITS & COMPONENTS 80/125mmØ
(not supplied):
Horizontal flue kit: Part No. 7-716-190-031
Vertical flue kit: Part No. 7-716-190-032
Extension kit (1 metre) x1: Part No. 7-716-190-033
Inline elbow 90° x1: Part No. 7-716-190-034
Inline elbow 45° x2: Part No. 7-716-190-035
Horizontal terminal guard: Part No. 7-716-190-050
CF FLUE KITS 80/100 & 103mmØ (not
supplied):
CF Vertical flue kit: Part No. 7-716-190-036
FLUE TERMINAL GUARD (not supplied):
Terminal Guard: Part No. 7-716-190-050
INSTALLATION NOTES:
Ensure all flue seals are in good condition and
seated properly.
To ease assembly of flue components, grease
seals lightly with the solvent-free grease supplied.
Use flue clamps to support the flue system.
IMPORTANT: The boiler is not designed to
take the weight of the flue system, this must
be supported externally to the boiler.
All horizontal flue sections must rise by at least
52mm for each metre away from the boiler to
ensure that condensate flows back into the boiler
for safe discharge via the condensate waste
pipe.
* To use the flue outlet 'B' the expansion vessel
must be removed and the connection from the
boiler capped off. The expansion vessel must be
fitted outside the boiler and connected to one of
the right hand side 1" BSP tappings (T).
FLUE INSTALLATION
1m
2m
52mm
104mm
E
H
K
E
F
G
H
G
A
C
D
B
600mm
E - Boiler outer casing
F - Outer flue tube
G - Outlet/elbow connection
H - Outside wall/roof
K - CF adaptor
L
120mm
T
