Water Trap In The Pipe System - Siemens FDA241 Planning, Mounting

3.5 Water trap in the pipe system

Building Technologies
Fire Safety
In the case of highly variable ambient conditions where there is a risk of
condensation water forming in the pipe system, a water trap must be used. The
water trap collects the condensation water. The condensation water must be
drained via a drain hole in the water trap.
The condensation water that has been collected must not enter the airflow and
must be drained in good time.
Installation site requirements
It must be easy to read the level of water in the water trap.
It must be possible to access the water trap when full for the purpose of
emptying it.
The water trap must be installed at a horizontal point within the pipe system
that is as low as possible. It must not be possible for water to accumulate at
any other point.
Figure 6: Example of how to arrange a water trap
Airflow
1 Aspirating smoke detector with
front indicator that is rotated by
180°
2
T-fitting for connecting the water
trap at a low horizontal point within
the pipe system
3
Distance between manifold and
surface of the water > 300 mm
System description
Water trap in the pipe system
4 Valve for draining condensation
water
5 Outlet opening
6 Condensation water
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2017-09-12