14
4.6 FIT THE FLUE - Figs. 14, 15
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 CD13R, 18R, 24R - Installation
Fig. 14
Fig. 15
2. Determine the overall length (L) of flue required, (see Fig. 16) as follows:-
Rear flue L = wall thickness (B) + 90 mm for CD13/18R or 60 mm for CD24R
Side flue L = wall thickness (B) + distance between boiler and wall (C) + 120 mm
Fig. 16
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.
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 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. 17 - Fitting the flue from inside
5. Position the seal and clamp (two screws) supplied, over the bend. Fit the bend to the boiler and rotate to the correct position.
Secure in position using the seal and clamp, ensuring the seal is located centrally over both the bend and boiler adaptor.
6. Fit the inside flue sealing collar over the Easy-Flue. Fit the outside flue sealing collar onto the flue immediately before the
terminal grille onto the location provided.
CD Easy-Flue
500 mm
1000 mm
Max
475
920
Min
285
710
B + C (mm)CD Easy-Flue
500 mm
1000 mm
B (mm)
13R/18R
515
960
13R/18R
325
750
24R
545
990
24R
355
780
Max Min
Rear Flue
(B)
SideFlue
(B+C)
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