Worcester 26CDi XTRA Installation And Servicing Instructions page 15

Fig. 16. Marking the Flue Positions for all Flue Options
and Fixing the Wall Mounting Plate
Top fixing
screws (2)
Pre-Plumbing
Manifold
Plumbing Manifold
fixing screws (4)
Fig. 17. Minimum Core Drill Size for
Flue Duct Hole.
*
NOTE:
1
2 / ¡ is equivalent to
2
44mm per metre length
75
313
Appliance
Wall Thickness. mm.
75 Single Brick
313 Standard Cavity Wall
700 Composite Wall
Internal Flue Fixing Kit
Rear and Side Installation
Drill or cut the flue duct hole horizontally through the wall. Refer
to fig.17 for the minimum core drill size for various wall
thickness.
Note: The diameter of the hole takes into account the 2
incline of the flue system.
Drill the six fixing holes 6.0mm deep for No. 12 size wall plugs.
Fix the wall plate to the wall, ensure it is horizontal before
tightening the six screws.
Remove the plastic cover protecting the valve and 'O' rings.
Discard the cover.
Ensure the 'O' rings are fitted and they are clean and
lubricated.
Connect the gas, water, condensate and pressure relief valve
connections to the manifold.
211mm
425mm
Incline
700
Flue Hole Diameter. mm.
120
140
170
150
Rear flue installation.
This is the rear flue
centre point position
2
Incline
Side flue installation.
Draw a line inclining
towards the appliance
by 2 1 / ¡ in the
2
appropriate direction.
Mark horizontal line
along here.
The primary system and mains supply must be thoroughly
flushed and treated in accordance with the recommendations of
BS 7593:1992.
Before assembling the appliance to the pre-plumbed manifold
*
check that the inlet water filter is fitted.
2 1 / ¡
2
The filter is fitted (push fit) into the cold water inlet on the
diverter valve. See fig. 18.
Fig. 18. Fit Water Inlet Filter
IMPORTANT:
After flushing out all
pipework and before
mounting the appliance
check that the water inlet
filter is fitted.
1 / °
2
15
Side flue installation.
This is the side flue
centre point position
1 / ¡
2
*
Corner
*
NOTE: 2 1 / ¡ is equivalent
2
to 44mm per metre length.
Inlet water
filter (push
fit)
Cold water
inlet on
diverter valve