Worcester 24ijunior Installation And Servicing Instructions page 16

Fig. 21. Extension duct
Flue
turret
assembly
Appliance
Fig. 22. Flue duct length - side
Flue
turret
assembly
Fig. 23. Flue duct length - rear
Flue
turret
assembly
11.9 Measure and Cut the Ducts.
General: Cut the ducts as necessary, ensuring that the cuts are
square and free from burrs. Always check the dimensions before
cutting.
Measure the distance L. Refer to Fig. 20, 21, 22 and 23.
The standard flue can be telescopically adjusted to any length
between 425mm and 725mm measured from the centre of the
turret without the need to cut the ducts.
Fix the flue assembly together using the self-tapping screws
provided. Refer to Fig. 20.
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 eg. if L=350 – remove 75mm
(425 — 350) from each assembly.
Fixing screw
casing
Terminal
L
assembly
L
Fixing screw
Ducts of equal length
L
It is not necessary to cut the ducts
If L is between
It will be necessary to cut the ducts
If L is between
It is necessary to shorten the assembly by cutting the first
extension duct assembly eg. L = 1000mm — remove 175mm
from the air and flue ducts (1175 – 1000 = 175mm).
NOTE: Extension duct measurements do not include the
socketed end. Unless specifically instructed the socketed end
must not be removed.
Fix the flue ducts together before fixing the surrounding air duct.
The cut ducts fit into the terminal assembly.
11.10 Fitting the Flue Assembly with Access to the Terminal.
Prepare the flue duct assembly as described in Section 11.8.
Apply the plastic tape to the air duct to be in contact with the
external brickwork.
From inside push the assembly through the wall. Align the flue
turret and push fully onto the spigot on the appliance. Tighten
the clamping ring. Refer to Fig. 24.
Make good the internal wall face and the external brickwork or
rendering.
16
Terminal
assembly
Terminal
assembly
1175 - 1475mm (1 extension)
1925 - 2225mm (2 extension)
2675 - 2975mm (3 extension)
725 - 1175mm (1 extension)
1475 - 1925mm (2 extension)
2225 - 2675mm (3 extension)