Ø 80 mm
The components marked * in FIG 2.9 are present or absent
depending on the type of flue system used by the installer.
In addition, it is also possible to use a split (twin pipe)
system by fitting a special adaptor to the flue connector
and using the aperture for the air vent intake located on
the top part of the combustion chamber.
To utilise the air intake it is necessary to:
1. Remove the bottom of the air intake by cutting it with a
suitable knife (see
FIG.2.8);
2. Insert the elbow into the air intake until it reaches the
lower end. (There is no need to use gaskets or sealing
componds).
10
IMPORTANT!
For all flue systems, a restrictor
must always be inserted into the
boiler’s flue connector; the
restrictor must be ¯ 41 or ¯ 47 in
diameter depending on the length
of piping indicated in T
ABLE 2.1.
The diagrams illustrate some of the
various designs for coaxial or twin
pipe flue systems.
For further information on
discharge/ventilation accessories,
see the
FLUE PIPE ACCESSORIES
MANUAL.
COAXIAL SYSTEMS
FIG. 2.8
F
IG. 2.9
F
IG. 2.10
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