Caution
The use of any and all other components is prohibited.
Note
Only original components are authorised for connection to the
boiler and for the terminal.
The clear section must comply with the standard.
The chimney must be swept before installing the discharge flue.
Caution
Ensure that the flue gas discharge pipes are securely attached to
the wall with suitable retaining flanges to prevent any damage and
guarantee the tightness of every gasket in the circuit.
Refer to the prevailing British standard BS5440 - part 1 on flue re
taining systems.
Caution
The minimum gradient of the condensates discharge pipe from the
boiler to the waste water discharge must be 1 cm per linear metre.
6.5.2 Coaxial pipes
Fig.43 Specifications of the coaxial pipes for Sirius two FS 50 and Sirius two FS 70
MW-3000123-01
225
450
505 377
140
225
226
Fig.44 Specifications of the coaxial pipes for Sirius two FS 90 and Sirius two FS 110
MW-3000124-02
450
584
approx
285
354,5
112
245,5
This type of pipe is used to discharge exhaust gases and draw in combus
tion air, whether outside the building or in the flue gas pipes. The 90° co
axial elbow is used to connect the boiler to the discharge/intake pipes in
every direction due to the 360° rotation option. It can also be used as an
extra elbow in combination with the coaxial pipe or the 45° elbow. If dis
charging to the outside, the discharge/intake pipe must stick out of the wall
by at least 18 mm to allow fitting of the aluminium rosette and its sealing
unit and thus prevent any infiltration of water.
Insertion of a 90° elbow reduces the total length of the pipe by 1 metres.
Insertion of a 45° elbow reduces the total length of the pipe by 0.5 me
tres.
6 Installation
40
Sirius Two FS
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