3
2.
INSTALL THE BOILER
a.
Fit the boiler in accordance with the installation instructions supplied with the Alpha condensing boiler - Sections 4.1 to 4.5.
b.
Use the template (supplied with the boiler) to mark the flue position and cut a 110 mm diameter flue hole (or use a
107 mm core drill).
Notes: i.
Ensure the hole is cut horizontally.
ii.
If the Easy-Flue is being fitted internally, cut a 130 mm diameter flue hole (or use a 127 mm core drill).
Refer to Section 3, paragraph (c) or Section 4.
3.
FIT THE FLUE
The following procedure applies to fitting an Alpha CD Easy-Flue to both rear or side exit flue - horizontally only.
Note:
If extending the Easy-Flue refer to Section 4.
a.
Determine the overall length (L) of flue required, (see Fig. 3) as follows:-
Rear flue
L = wall thickness (B) +
*
60 mm (CD C/X/S) or 85 mm (CD13/18R) or 55 mm (CD24R) or 160 mm (CD50)
or 90 mm (HE)
*
Add 45 mm when Premier Pack is used
Side flue
L = wall thickness (B) + distance between boiler and wall (C) + 145 mm (CD C/X/S) or 120 mm (CDR) or
150 mm (HE)
Side flue (CD50) L = wall thickness (B) + distance between boiler and wall (C) + X
(L/H side X = 105 mm, R/H side X = 345 mm)
b.
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.
c.
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 - Fitting the flue from inside
Fig. 2 - Side Flue
Check collar is sealing
the wall and it is not
restricting any openings
of the flue terminal
130 mm
CD C/X/S Boiler
CD Easy-Flue
500 mm
1000 mm
Max
440
885
Min
215
675
B + C (mm)
CD50 Boiler
CD Easy-Flue
500 mm L/H flue
500 mm R/H flue
1000 mm L/H flue
1000 mm R/H flue
Max
480
240
925
685
Min
255
15
715
475
B + C (mm)
HE Boiler
CD Easy-Flue
500 mm
1000 mm
Max
435
880
Min
210
670
B + C (mm)
CDR Boiler
CD Easy-Flue
500 mm
1000 mm
Max
465
910
Min
240
700
B + C (mm)
Fig. 3
(B + C)
Side Flue
Seal Joint with Tape
L
