Unical DUA plus - Smoke Discharge System Forced Draught Boilers

15
Installation info
®
plus DUA
fig. 12
178
100
80
863
361
450
DIMENSIONS FOR CONNECTION
OF THE COAXIAL DUCTS
Type C12
The maximum autorised length for the
horizontal coaxial pipes is 3 meters; for each
supplementary bend the maximum length will
be reduced by 1 meter; furthermore the pipe
shal have a downward inclination of 1% on
the outlet direction in order to avoid the rain
enter the pipe.
For installations with horizontal coaxial pipe
with length between 0.5 and 1 m, it is
necessary to place, inside the fan outlet, the
diaphragm supplied with the boiler (see fig.
11).
Type C32
The maximum allowed length of the coaxial
vertical pipes is 5 meters, included the roof
terminal; for each supplementary bend the
maximum allowed length will be reduced by
1 meter.
For installations with coaxial ducts having a
length between 1.2 and 2.5 m, it is necessary
to place, inside the fan outlet, the diaphragm
supplied with the boiler (see fig. 11).
2.2.6 - SMOKE DISCHARGE SYSTEM
FORCED DRAUGHT BOILERS
C12: between 0.5 and 1 m
with
diaphragm Ø 40 L m
ax = 3 m
fig. 11
Neoprene
Diaphragm
C12: between 1.2 and 2.5 m with diaphragm Ø 40 L max = 3
Diaphragm
gasket