19
Installation info
fig. 13
fig. 14
Diaphragm
Ø 42 mm
Fitting of the diaphragm Ø 42
2.2.8 - SMOKE EVACUATION Ø 80
WITH AIR SUCTION
FLANGE - Type B22
(see par. 2.2.6)
Note: For evacuation system with 80 mm dia.
and a lenght between 0.5 m and 4 m, it
is necessary to introduce a diaphragm
of 42 mm dia. supplied with the boiler in
the plastic bag, into the fan outlet adap-
tor (see fig. 13).
The maximum allowed length for a smo-
ke pipe of 80 mm dia. is 20 m, included
a wide radium curve and one smoke ter-
minal.
For this type of installation the chim-
ney has to serve just one boiler, i.e. the
boiler must have its indipendent smo-
ke duct.
WARNING:
For the installation where there
is a freezing risk it is suggested
to insulate the smoke duct 80
mm dia. on all its length, both in
case it discharges from a verti-
cal wall or in a chimney.
WARNING: For the smoke ou-
tlet configuration (see fig. 13-
14) it is necessary to close the
holes of air entry ''1-2'' with
the provided for closing co-
vers and the gaskets delive-
red with the boiler.
Closing cover with
gasket in
neoprene
Closing cover with
gasket in
neoprene
Closing cover with
gasket in
neoprene
Closing cover with
gasket in
neoprene
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