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3 - Installation
DID301-302 Installation, Operation & Maintenance Manual (USA) (06/2015)
3.6 Flushing the water piping system
Before flushing the water system, close all valves that isolate the
beams and flush the main piping system first.
3.7 Filling and venting the water system
To ensure easy venting, the main pipes should be installed at a
higher level than the beams. The horizontal pipes should be installed
rising slightly towards the venting points.
Before filling, all shut-off and control valves must be in the fully open
position. The pumps should not be running during the filling-up
(static filling). Continuous venting is necessary. The installation of
both manual and automatic venting systems is recommended. The
pump should only be started when filling is complete.
To remove all air from the system, the majority (>75%) of the system
should be closed so that the water can circulate fast enough. When
each section is full, it should be closed and the procedure repeated
throughout the system.
Note
There should be no high points to create
“air pockets” within the sytem.
Note
Use non-chilled water when filling up the system!
Cold water can cause immediate condensation on
the pipes. Warm water contains less oxygen which
can limit venting to some extent.
3.8 Typical active chilled beam installation photos
Active chilled beams with
2-way flow shown during
installation
Active chilled beams -
finished installation