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Ø 80 mm
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 F
IG
. 2.7);
2. Insert the elbow into the air intake until it reaches the lower
end. (There is no need to use gaskets or sealing compounds).
9
IMPORTANT!
For all flue systems, a restrictor must
always be inserted into the boiler’s
flue connector; the restrictor must be
Ø 41 in diameter depending on the
length of piping indicated in T
ABLE
2.1.
FIG 2.9 and FIG 2.10 illustrate some of
the various designs for coaxial or twin
pipe flue systems.
For further information on
discharge/ventilation accessories, see
the F
LUE PIPE ACCESSORIES MANUAL
.
COAXIAL SYSTEMS
F
IG. 2.7
F
IG. 2.8
F
IG. 2.9