COMMISSIONING
6 720 643 603 (2011/11)
15
B Close the fill and drain valves (3) in the solar heating
station.
Fig. 14
1 Left-hand ball valve completely open (0°)
2 Right-hand ball valve closed (90°)
3 Fill & drain valves in the solar heating station
6.2.2 CARRYING OUT PRESSURE TEST WITH WATER
The solar heating system is vented by the opening of the
plug screw (2) on the automatic air vent. To prevent
moisture entering the air vent during operation, the
weather protection cap (1) must always be over the plug
screw.
B Open the ball valve (3).
B Unscrew the plug screw (2) one turn.
Fig. 15 Opening the air vent
1 Weather protection cap
2 Plug screw
3 Ball valve
B Set the ball valves (1) on the thermometers to 45°
and open the flow limiter (2) and other shut-off
fittings.
Fig. 16 Opened shut-off fittings
1 Ball valves and gravity brake open on the thermometers
(45° position)
2 Flow limiter open
B Carry out a pressure test to check compliance with
the maximum permitted pressures of all components.
B After the pressure test, drain the water and clean the
automatic air vent.
7747006489.20-1.SD
3
3
20
0
40
60
°C
80
100
120
1
2
20
0
40
60
°C
80
100
120
7747006489-22.1SD
2
1
3
7747006489.24-1.SD
1
20
0
40
60
°C
80
100
120
2
20
0
40
60
°C
80
100
120
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