Pipe System, Configuration - ABB i-bus KNX FCA/S 1.1M Product Manual

ABB i-bus KNX
4.1.5.1 2 pipe system,
configuration
© 2010 ABB STOTZ-KONTAKT GmbH
Planning and application
The 2-pipe system consists of just a single water circuit which is heated or
cooled alternately to suit the season. In a 2-pipe Fan Coil unit there is only
one heat exchanger with a valve.
Note
In some HVAC systems cooling is undertaken exclusively with a 2-pipe
Fan Coil unit. The heating function is undertaken by a conventional heater
or an electrical heater.
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