Baxi LINA 3 COMFORT HT Instruction Manual page 61

Precautions for the following installation types:
C , C The terminals for separate flues must be fitted inside a 50 cm square.
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Detailed instructions are provided with the individual accessories
C Do not fit the flue and air duct terminals on opposite walls of the buil-
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ding.
C The pressure drop of the ducts must not exceed 100 Pa. The ducts
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must be certified for this specific use and for a temperature in excess
of 100°C. The flue terminal must be certified EN 14471.
C , C The flue terminal or flue duct must be suitable for the purpose.
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CAUTION
To optimise operating safety, make sure the flue ducts are firmly fixed to
the wall with suitable brackets.
... COAXIAL FLUE-AIR DUCT (CONCENTRIC)
This type of duct is used to discharge exhaust fumes and draw combustion
air both outside the building and if a LAS flue is fitted.
The 90° coaxial bend allows the boiler to be connected to a flue-air duct
in any direction as it can be rotated by 360°. It can also be used as a
supplementary bend combined with a coaxial duct or a 45° bend.
If fumes are discharged outside the building, the flue-air duct must
protrude at least 18mm from the wall to allow an aluminium weathering
surround to be fitted and sealed to avoid water infiltrations.
Make sure there is a minimum downward slope of 5 cm per metre of duct
towards the boiler.
A 90° bend reduces total duct length by 1 metre.
A 45° bend reduces total duct length by 0.5 metre
15.1 Ø 60/100 HORIZONTAL FLUE TERMINAL INSTALLATION OPTIONS
INSTRUCTIONS FOR FITTERS
L max = 10 m Ø 60/100 mm
L max = 25 m Ø 80/125 mm
L max = 9 m Ø 60/100 mm
L max = 24 m Ø 80/125 mm
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C
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C
13
C
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Figure 8
Concentric adaptor
C
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C
13
C C
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926.420.3 - EN