Installation manual

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or 1 m. extensions as necessary for a total of 18 linear meters. Pay particular attention to
the catches as they must guarantee the complete sealing of air and flues.
Each piece, either horizontal or vertical, must be suitably fixed to a wall or ceiling with
proper supports or brackets.
The path and the length of the ducts should consider that the total approved loss of
capacity is 11 mm c.a. = a ~ 110 Pa.
• For each meter of either air inlet or flue outlet ø 80 mm tubing, the average loss of
charge is 0.25 mm c.a. = ~ 2.5 Pa.
• For each ø 80 mm 90° bend as previously mentioned, the average loss of capacity is
0,5 mm c.a. = ~ 5 Pa
Examples: 12 m duct ø 80 x 0.25 = 3.0
2 bends ø 80 mm 90° x 0.5 = 1.0
4.0 mm total loss of capacity
12 m duct ø 80 x 0.25 = 3.0
3 bends ø 80 x 0.5 = 1.5
4.5 mm total loss of capacity
2.24 Chimney flue outet or tubing outlet duct type C53 – C83
• The roof flue outlet systems can be made as follow:
• chimney flue outlet operating by means of positive pressure in comparison to the boiler
installation room, external and not adjacent to the building,
• tubing outlet duct operating by positive pressure in comparison with the installation
room which is located in an internal position or in a close part of the building.
These flue outlet systems are to be suitable for wet locations:
• they must be provided with a condensate drainage system which prevents the flues
from entering the room or the sewer. Stagnation must be avoided in the flue outlet
systems except for the water head in the water trap.
• frosting must be avoided: along the whole length of the chimney and of the tubing
outlet duct the temperature must not decrease under 0°C; given a design external
temperature, the flue outlet systems are supposed to be resistant to the corrosive
action of condensate in every operation condition.
The flue outlet systems must be made of material resistant to the flue maximum\
temperature.
The boiler and the chimney or the boiler and the tubing outlet duct (called flue duct) will be
fitted by using only the accessories we provide. They are to be installed following the
instructions of the previous paragraph. The flue duct is supposed:
• to have a section which is not smaller than that of the boiler flue duct connection
throughout its length
• to be located at sight, easily detachable
• to be installed so as to allow its standard thermal expansions
• to have its terminal perpendicular to the chimney without projecting inside the chimney
itself to have no interception devices.