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INSTALLATION
Balanced flue boiler connection type: C
• C13: concentric horizontal connection
• C33: concentric vetical connection
• C53: parallel chimney connection
• C63: concentric vertical connection without terminal (only in
Germany and Luxembourg).
C53
C13
C33
2 m min.
150 min.
120
Maximum length concentric : 6 metres
Maximum length parallel : 12 metres
Note: a 90 degree bend = 1 metre equivalent length
A condensation drain outlet must be fitted close to the boiler to prevent condensation products from
the chimney running into the boiler.
To avoid condensation water running out of the terminal, all horizontal flue runs must fall back
towards the boiler.