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3.4.1 Horizontal Flue Options
Alpha CD90S/115S - General Boiler Information
3.4.2 Vertical Flue Options
Open flue:
80 mm dia. single pipe
Hmax = 17 m (CD90S), 14 m (CD115S)
Concentric flue:
80/125 mm dia.
Hmax = 12 m (CD90S), 8 m (CD115S)
Open flue:
80 mm dia. single pipe
Hmax = 14.4 m (CD90S), 11.4 m (CD115S)
Concentric flue:
80/125 mm dia.
Hmax = 9.2 m (CD90S), 5.2 m (CD115S)
Open flue:
80 mm dia. single pipe Lmax = 17 m (CD90S), 14 m (CD115S)
90° bend is equivalent to 2.1 m of flue length
45° bend is equivalent to 1.3 m of flue length
Concentric flue:
80/125 mm dia.
Lmax = 10 m (CD90S), 7 m (CD115S)
90° bend is equivalent to 1.9 m of flue length
45° bend is equivalent to 1.4 m of flue length
Open flue:
80 mm dia. single pipe
Lmax = 14.9 m (CD90S), 11.9 (CD115S)
Concentric flue:
80/125 mm dia.
Lmax = 8.1 m (CD90S), 5.1 m (CD115S)
Open flue:
80 mm dia. single pipe
Lmax = 14.4 m (CD90S), 11.4 m (CD115S)
Concentric flue:
80/125 mm dia.
Lmax = 7.2 m (CD90S), 4.2 m (CD115S)
Fig. 5 - Horizontal flues
Fig. 6 - Vertical flues
Not less than
300 mm
H
Not less than
300 mm
Not less than
300 mm
H
Not less than
300 mm
L max
L max
L max
L max