3
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 90 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. 6
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.
90
Outer duct clamp
Inner duct seal joint
Inner duct seal joint
90° bend
Clamp and
tape
Terminal
Flue sealing collar
Note:
Ensure the outer flue duct is horizontal
Boiler side
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
70 mm
65 mm
35 mm
140 mm
40 mm
*
HE
CD13R/18R
CD24R
CD50
CD C/X/S
165 mm
160 mm
130 mm
235 mm
140 mm
*
Note: *
Add 40 mm when Premier Pack is used
20
Model
CD C/S/X
CD13R/18R
CD24R
CD50
HE
All models
All models
Rear Flue length (B)
Up to maximum:-
11.935 m
11.915 m
11.945 m
11.84 m
2.91 m
Refer to Fig. 1
Refer to Fig. 1
Side Flue length (B + C)
Up to maximum:-
11.85 m
11.875 m
11.875 m
LHS 11.895 m
RHS 11.655 m
2.845 m
Refer to Fig. 2
Refer to Fig. 2
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 4 for instructions
on how to extend the flue.
Note:
A 130 mm flue hole (127 mm core drill) is
required in the wall.
Within the standard Easy-Flue 1000 mm
(Part No. 6.20001010) telescopic range.
Within standard Easy-Flue 500 mm
(Part No. 6.2000510) telescopic range.
*
Subtract 40 mm if
Premier Pack is used
*
Fig. 5 - Rear flue
4a. REDUCING THE FLUE
When the flue length required is less than the minimum stated in Section 1, paragraph (g), refer to the table below and
Figs. 1 and 2.
Model
CD C/S/X
HE
CD13R/18R
CD24R
CD50
CD C/S/X
HE
CD13R/18R
CD24R
CD50
Less than above
Rear Flue length (B)
Between:-
510 mm & 700 mm
490 mm & 680 mm
95 mm & 685 mm
125 mm & 715 mm
20 mm & 610 mm
Between:-
110 mm & 260 mm
90 mm & 240 mm
95 mm & 245 mm
125 mm & 275 mm
20 mm & 170 mm
Side Flue length (B + C)
Between:-
30 mm & 620 mm
25 mm & 615 mm
55 mm & 645 mm
55 mm & 645 mm
LHS 70mm & 660mm
RHS 20mm & 420mm
Between:-
30 mm & 180 mm
25 mm & 175 mm
55 mm & 205 mm
55 mm & 205 mm
LHS 70mm & 220mm
RHS N/A
Comments
Discard first telescopic section of Easy-Flue 1000 mm
(i.e. not with terminal) and cut to required length.
Discard first telescopic section of Easy-Flue 500 mm
(i.e. not with terminal) and cut to required length.
Terminal may protrude somewhat from the outside wall.
