Worcester 24i RSF Installation And Servicing Instructions page 12

Fig. 12. Appliance casing and control
equipment fixings.
Inner casing
cover
screws (4)
Bottom facia
panel fixing
screws (3)
11.8 Air and Flue Duct Preparation
The method of installation of the flue system may be varied to
suit the actual site conditions. The instructions for connecting
and fixing the ducts must, however, be strictly followed.
Remove all packing material from the flue components.
Fig. 13. Appliance pipework connections.
(A)
(B)
(C)
(D)
(E)
(F)
A Safety Relief
B CH Flow
C DHW Out
D Gas Inlet
E Mains Cold Water In = 290mm
F CH Return
Supplied By www.heating spares.co Tel. 0161 620 6677
Side casing
fixing
screws (4)
Facia panel
fixing
screws (2)
36.5mm
100mm
= 50mm
= 95mm
= 160mm
= 225mm
= 355mm
12
The standard telescopic flue assembly is suitable for flues
from425mm (without cutting) up to 725mm measured from the
centre-line of the boiler flue outlet to the outer face of the wall.
Refer to Fig. 14.
If L is greater than 725mm then flue extension kits will be
required - each kit extends the flue by 750mm up to a maximum
of 2500mm. See table below.
EXTENSION
1
2
3
11.9 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. 16 and 17 .
The standard flue can be telescopically adjusted to any length
between 425mm and 725mm.
Fix the flue assembly together using the self-tapping screw
provided. Refer to Fig. 14.
It will only be necessary to cut the standard assembly if L is less
than 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 = 322mm
100mm wall)
If L is between 1175 - 1475mm
1925 - 2225mm
it is not necessary to cut the ducts.
Fig.14 . Standard flue assembly.
Turret
Fixing screw
assembly
Appliance casing
MAXIMUM FLUE LENGTH mm
1475
2225
2500
(accommodating a
(accommodating a
(1 extension)
(2 extension)
L
Terminal
assembly
Telescopic
adjustment