If L is between:
725 - 1175mm
(1 extension)
1475 - 1925mm
(2 extension)
2225 - 2500mm
(3 extension)
it is necessary to shorten the assembly by cutting the first
extension duct assembly i.e. L = 1000mm - remove 175mm
from the air and flue ducts.
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 flue assembly.
12.10 Fitting the Flue Assembly with Access to the Terminal
Prepare the flue duct assembly as described in Section 12.9.
Apply the plastic tape to the air duct 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 and fix with the screw provided. Refer to Fig.
22.
Make good the internal wall face and the external brickwork or
rendering.
Replace the inner casing.
12.11 Fitting of the Flue Assembly without access to the Terminal
A rubber gasket kit is available from Worcester Heat Systems.
NOTE: A larger diameter opening in the wall is required. Refer to
Table 2.
Prepare the flue assembly as described in Section 12.9.
Fit the rubber sealing gasket centrally onto the terminal
assembly and tighten the clamp. Refer to Fig. 23.
Apply the plastic tape to the air duct in contact with the external
brickwork.
From inside push the assembly through the wall so that the
gasket flange is against the outer face. Refer to Fig. 23.
It may be necessary to adjust the legs of the flue centering ring.
Align the flue turret and push fully onto the socket on the
appliance. Tighten the clamping ring and fix with the screw
provided. Refer to Fig 22.
Seal the gap around the duct at the inner wall face with the
flexible seal provided and make good.
Replace the inner casing.
15
Fig. 19. Extension Duct.
L
Appliance casing
Fixing screws
Fixing screw
Turret
assembly
Terminal
assembly
Ducts of equal length
Shorten first extension fitted
to the turret assembly if more
than one extension is fitted
Fig. 20. Flue duct length (side flue).
L
Flue
Turret
assembly
Terminal
assembly
Fig. 21 . Rear flue.
Rear face of appliance
and face of mounting
wall
External
wall face
L
Indents
in line
with wall
face
Terminal
assembly
