Technical data
17
23
20
Heating drain
point
Cyclone drain
point
Wall jig
Condensate
trap
Heating return
valves
Heating flow
valve
B D
C
A
65 457058202
Condensate
discharge pipe
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.
2. Determine the overall length (L) of flue required, (see Fig. 16) 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
Alpha InTec S - Installation
Fig. 13b - With wall jig
A - Heating flow (22 mm)
B - Gas inlet (15 mm - 12S, 18S)
(22 mm - 28S)
C - Heating return (22 mm)
D - Pressure relief valve (15 mm)
Note: Disconnect the filling loop after
filling the central heating system.
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 the two sections overlap by at least 25 mm when extending to the maximum length.
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. 14 Fig. 15
CD Easy-Flue
500 mm
1000 mm
B (mm)
Max
525
970
Min
300
760
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
Fig. 16
Seal Joint with Tape
L