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4.6 FIT THE FLUE - Figs. 4.5 and 4.6
The following procedure applies to fitting an Alpha CD Easy-Flue to both rear or side exit flue - horizontally only.
1. The CD Easy-Flues are suitable for use in the flue length ranges shown in the tables below.
Note: Where the length is less than the minimum or more than the maximum, refer to Section 4.7.
Alpha InTec² 26E, 30CE and 35CE - Installation
3. Adjust the telescopic section of the flue to the distance ‘L’, ensuring that the two labels marked ‘TOP’ are aligned, then
seal and secure the joint between the ducts with the sealing tape supplied.
Note: Always ensure that there is a minimum overlap of 25 mm when fully extending the telescopic section.
4. Pass the flue assembly through the wall (from inside or outside).
Note: Internal fitting - If there is no access to make good the outside wall, locate the outside (black) flue sealing collar
onto the outer duct of the flue immediately before the terminal grille onto the location provided. Push the flue assembly
through the 130 mm flue hole, so that the collar completely passes through the wall. Then pull the flue assembly back into
the correct position. Visually check that the collar is sealing the outside wall and that it is not restricting any of the openings
of the flue terminal.
Fig. 4.7
Fig. 4.5 Fig. 4.6
CD Easy-Flue
500 mm
1000 mm
B (mm)
Max
530
975
Min
305
765
CD Easy-Flue
500 mm
1000 mm
Max
440
885
Min
215
675
B + C (mm)
Note: Add 45 mm to
dimension B if the wall jig is
used.
(B)
Rear Flue
(B + C)
Side Flue
Seal Joint with Tape
L
2. Determine the overall length (L) of flue required, (see Fig. 4.7) as follows:-
Rear flue L = wall thickness (B) + 60 mm (105 mm if the wall jig is used)
Side flue L = wall thickness (B) + distance between boiler and wall (C) + 145 mm
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