Extend The Flue - Alpha InTec 50CS Installation, User And Servicing Instructions

1.8 EXTENdING THE FLUE - FIG. 1-11
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.
InTec boilers must not exceed the maximum of
an equivalent horizontal flue length of 12 m.
- When the flue length required is more than the
maximum stated in Section 1.6, paragraph 1,
refer to the table below and Fig. 1-6.
Rear Flue length (B + C) Side Flue length (B + C)
Up to maximum:- Up to maximum:-
11.885 m
11.805 m
Additional support brackets are required when extending the flue. These are available from Alpha, Part No. 6.1000355.
- Use the template (supplied with the boiler) to
mark the required flue position, ensure the
slope towards the boiler is correct.
- Determine the overall flue length as described
in Section 1.6, paragraph 2 to determine the
number of Alpha CD 750 or 1000 mm flue
extensions required.
- Assemble the flue extensions together by
locating the inner duct into the seal joint
and secure each extension together with the
extension clamps supplied (three screws).
Ensure that the clamps are positioned centrally
over the joints.
Note: If it is required to cut an extension,
dO NOT cut the end of the inner duct that
incorporates the seal joint. Ensure the inner
duct end without the seal joint is cut so that it
is 20 mm longer than the outer duct.
Ensure that all cuts are square and free from
burrs.
Once assembled with the components pushed
home, the flue is fully sealed.
Ensure the inner duct within the terminal
is at the top.
Note: The inner duct must be positioned
to slope towards the boiler
120
20
Terminal
Flue sealing
collar
Alpha Intec 50CS
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 1.8 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.
- Adjust the telescopic section of the Easy-Flue
to the required length and secure the Easy-Flue
with the sealing tape supplied. Fit the Easy-Flue
to the extensions by locating the inner duct into
the seal joint and secure with the clamp (three
screws), ensuring it is located centrally over the
joint.
- Mark the end of the flue assembly 'TOP' where
it is connected to the boiler, so that the 'TOP'
of the flue terminal is aligned with the 'TOP'
at the boiler end of the flue assembly.
- Pass the complete flue assembly through the
wall.
- Position the smaller Easy-Flue 40 mm clamp
(with seal) supplied, over the bend. Fit the bend
to the boiler and rotate to the correct position
and secure in position. Ensure the seal is
located centrally over both the bend and boiler
adaptor. If the inside sealing collar (white) is
being used to make good the inside wall, then
it will need to be fitted before assembling the
flue.
Ensure outer flue duct of Easy-Flue is horizontal
Extension clamp
CD Easy-Flue
Inner seal joint
CD Flue extension
Flue length (L)
8
- Slide the larger Easy-Flue 45 mm clamp (two
screws) over the outer duct and pull the flue
assembly towards the bend, locating the inner
duct into the seal joint on the bend.
- Secure the flue assembly to the bend with the
clamp ensuring it is positioned centrally over
the joint, ensuring the 'TOP' marked on the
outer duct is positioned at the top.
Note: Check the flue terminal protrudes 120
mm out of the wall and that the inner duct
of the terminal is positioned correctly, i.e. the
inner duct within the terminal is at the top. See
Fig. 1-11 or 1.12.
- Make good the outside wall by fitting the
outside sealing collar (black) onto the location
provided immediately behind the flue terminal
grille. Make good the inside wall using the
inside sealing collar (white) if required.
Ensure the flue extension slopes
downwards towards the boiler by a
minimum of 25 - 30 mm per metre
Inner seal joint
End of extension
422
517
Easy-Flue 45 mm clamp
90° bend
Easy-Flue
40 mm clamp
and seal
Seal joint
Front of boiler
Fig. 1-11 - Left side flue