4
d.
Position the clamp (two screws) supplied, over the bend. Fit the bend to the boiler and rotate to the correct position.
Secure in position using the clamp. Ensure the clamp is located centrally over both the bend and boiler adaptor.
e.
Fit the inside (white) flue sealing collar over the Easy-Flue. If it was not previously fitted, fit the outside (black) flue
sealing collar onto the flue immediately before the terminal grille onto the location provided.
f.
Slide the clamp (three screws) over the outer duct and pull the flue assembly towards the bend, locating the inner
duct into the seal joint on the bend. Ensure the labels marked 'TOP' are positioned at the top before securing the flue
assembly to the bend with the clamp (three screws) located centrally over the joint.
Note:
Check the flue terminal protrudes 120 mm out of the wall and the inner duct of the terminal is positioned
correctly (see Fig. 5).
g.
Make good the inside wall by pushing the inside flue sealing collar up to the wall.
4b. EXTENDING THE FLUE - Fig. 7
Note:
The flue assembly length must not exceed the maximum length stated, including the equivalent lengths of any
extensions, bends etc, used for plume management components.
CD boilers must not exceed the maximumum of an
equivalent horizontal flue length of 12 m and HE boilers must not exceed 3 m
.
a.
When the flue length required is more than the maximum stated in Section 1, paragraph (g), refer to the table below
and Figs 1 and 2.
Fig. 5 - Rear flue
4a. REDUCING THE FLUE - Fig. 6
When the flue length required is less than the minimum stated in Section 1, paragraph (g), refer to Fig. 6 below.
Discard the first telescopic section (
not
the section with the terminal) of the Easy-Flue 1000 mm or 500 mm and cut to the
required length.
Note:
Ensure that all cuts are square and free from burrs.
Once assembled with the components pushed home, the flue is fully sealed.
120
Outer duct clamp
Inner duct
Elbow seal joint
90° bend
Clamp and
seal
Terminal
Flue sealing collar
Note:
Ensure the outer flue duct is horizontal
Side of boiler
CD Easy-Flue
Ensure the inner duct within
the terminal is at the top.
The inner duct must
be positioned to slope towards
the boiler
Note:
HE
CD13R/18R
CD24R
CD50
CD C/X/S
165 mm
160 mm
130 mm
235 mm
140 mm
*
Note: *
Add 45 mm when Premier Pack is used
20
65
HE
CD13R/18R
CD24R
CD50
CD C/X/S
70 mm
65 mm
35 mm
140 mm
40 mm
*
Inner duct seal
Allow 20 mm
30 mm
Do not cut past this point
Fig. 6
Model
CD C/S/X
CD13R/18R
CD24R
CD50
HE
Rear Flue length (B)
Up to maximum:-
11.885 m
11.873 m
11.9 m
11.795 m
2.865 m
Side Flue length (B + C)
Up to maximum:-
11.805 m
11.83 m
11.83 m
LHS 11.845 m
RHS 11.605 m
2.8 m
Comments
Alpha CD 750 mm flue extension (Part No. 6.2000750)
or 1000 mm extension (Part No. 6.2001050)
is required to extend the range of telescopic flue.
Refer to Section 4b for instructions on how to extend
the flue.
Note:
A 130 mm flue hole (127 mm core drill) may be
required in the wall. This is when the extended flue is
passed through the wall.
*
Subtract 45 mm if
Premier Pack is used
*
Additional support brackets are required when extending the flue. These are available from Alpha, Part no. 6.1000355.
