Instructions for the installer
29
3.6.2 Forced draught boiler
When positioning the boiler exhaust terminals onto the wall, comply with the distances specified in the applicable standards and re-
gulations in force in the Country of installation, which are herein considered as entirely transcribed.
3.6.3
Possible configuration of air intake and flue gas venting ducts
Type B22
• Boiler intended for connection to a chimney pipe or a device
for flue gas venting external to the boiler room.
• Combustion air is taken directly from the boiler room itself whi
-
le flue gas is conveyed to the outside.
•
The boiler is not to be fitted with anti-wind gust device; it has
to be equipped with a fan mounted downstream of the combu
-
stion chamber/heat exchanger.
Type C12
• Boiler intended for connection to horizontal outlet and intake
ducts connected to the outside by means of coaxial or split
ducts.
• The minimum distance between the air intake duct and the
flue gas venting duct must be at least 250 mm (see figure
opposite), whereas both terminals must be contained within a
square measuring 500 x 500mm.
Type C32
• Boiler intended for connection to vertical outlet and intake
ducts connected to the outside by means of coaxial or split
ducts.
• The minimum distance between the air intake duct and the
flue gas venting duct must be at least 250 mm (see figure
opposite), whereas both terminals must be contained within a
square measuring 500 x 500mm.
