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2.6 Fume ducts
THE BOILERS MUST BE INSTALLED IN ROOMS THAT MEET THE FUNDA-
B
MENTAL VENTILATION REQUIREMENTS. OTHERWISE THERE IS A DAN-
GER OF ASPHYXIA OR POISONING.
READ THE INSTALLATION AND MAINTENANCE INSTRUCTIONS BEFORE
INSTALLING THE UNIT.
ALSO RESPECT THE DESIGN INSTRUCTIONS.
IN CASE OF PRESSURES EXCEEDING 200 Pa INSIDE THE FUME EXHAUST
PIPES, THE USE OF CLASS "H1" FLUES IS MANDATORY.
Important
The unit is a B23-type with combustion air drawn from the place of installation, and fume exhaust by means of a fan
(operation with flue pressurised), and must be connected to one of the discharge systems indicated below. Before pro-
ceeding with installation, check and carefully comply with the local regulations and provisions. Also, comply with the
provisions on the positioning of wall and/or roof terminals and the minimum distances from windows, walls, ventilation
openings, etc.
Manifold, ducts and flue must be suitably sized, designed and made in compliance with the current regulations. They
must be made of suitable materials, i.e. resistant to heat and corrosion, smooth on the inside and tight. In particular,
joints must be condensate proof. Also, provide for adequate condensate drainage points, connected to a trap to prevent
the condensate formed in the flues from running into the generators.
Fume pipes connection
Before installation, make sure the maximum permissi-
ble head has not been exceeded, by means of a sim-
ple calculation:
1. Completely define the layout of the flue system.
2. Consult the table 4 and identify the losses of each
component.
3. Check that the sum total of losses is less than or
equal to the maximum permissible head in table 4.
226
fig. 54- Connection examples (
cod. 3541Q764 - Rev. 00 - 05/2021
FORCE W
=Air /
=Fumes)
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