Worcester 28i RSF, Инструкции по установке и обслуживанию, Страница: 14 / 40

12.8 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.
Horizontal Flues up to 725mm Length
Fit the flue restrictor ring by unscrewing the flue spigot from the
boiler. Refer to Fig. 17.
The standard telescopic flue assembly is suitable for flues from
425mm (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. 18.
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 2-5m. See table below.
EXTENSION MAXIMUM FLUE LENGTH mm
1 1475
2 2225
3 2500
12.9 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. 20 and 21 .
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. 18.
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 (accommodating a
10mm Service clearance and a 100mm wall)
Minimum rear flue length = 322mm (accommodating a
100mm wall)
If L is between 1175 - 1475mm (1 extension)
1925 - 2225mm (2 extension)
it is not necessary to cut the ducts.
14
Fig.16. Appliance casing and control
equipment fixings.
Inner casing
cover screws
(4)
Side casing
fixing screws
(4)
Facia panel
fixing screws
(2)
Connections
cover fixing
screws (3)
Fig.17. Flue turret fixing and automatic
air vent.
1
2
3
4
5
6
1. Flue spigot fixing screws
2. Flue spigot
3. Restrictor ring
4. Flue spigot fixing holes
5. Reset button
6. Flue gas test point
Restrictor Ring Size
75mm horizontal flue up to 725mm.
Fig.18 . Standard flue assembly.
Appliance casing
Fixing screw
Turret
assembly
Terminal
assembly
L
Telescopic
adjustment