
Installation and operating instructions
Fresh water station WHI freshaqua 22
7 Commissioning
83514302 ▪ 1/2017-08 ▪ Ext. PAW
20-32
6
Operation
A detailed description of the operation of the controller can be found in the enclosed
controller manual.
7
Commissioning
Observe the following safety instructions regarding the commissioning of the station:
NOTICE
Note!
Open the valves in the lines and in the module slowly in order to
avoid pressure surges.
Check valve operation
The primary circuit is equipped with a gravity brake in ball valve (G) in order to prevent
undesired gravity circulation.
The gravity brake must be opened for venting and flushing the system.
For this purpose, turn the ball valve to position 45°. The gravity brake is not in operation.
All ball valves and valves must be opened completely for operating the system
(position 0°).
Ball valve with integrated check valve
(Normal direction of flow in the picture: downstream)
0°
45°
90°
Check valve in operation,
flow in flow direction only.
Check valve not in operation,
flow in both directions.
Ball valve closed,
no flow.
To actuate the ball valve, a handle is included in the delivery.