EN-CIRCO-5-MA-0701-11217300
7
4. Operating Advice
The Flow Meter
The flow meter indicates flow if the pump is switched on.
The exact value can be read from the display. It is possible
to adjust the flow by turning the adjustment screw with a
4mm Allen key during pump operation. If the screw is
turned fully clockwise, flow will stop completely.
Flow is cut off, when set screw is turned right to stop posi-
tion.
litre/minute
4 mm
example
8 litre/minute
2
4
6
8
10
12
14
Figure 8 Flow meter of the CIRCO 5 solar circulation unit with adjust-
ment option
The Return-Flow Stoppers
When the circulation pumps are turned of, unwanted heat
distribution in the solar circuit is prevented by non-return
ball valves. They only open into the flow direction and by
pump pressure. The ball-valve handles can be used to turn
them off.
●
During operation
●
Filling the system
●
Emptying the system
“Flow on”
Ball valve handle vertical
Non-return valve in operation
“Flow off”
Ball valve handle vertical
Non-return valve in operation
+
+
Figure 9 Operational position
“Flow on”
Ball valve handle 45°
Flow open, non-return valve off
“Flow off”
Ball valve handle horizontal
Flow closed
+
+
Figure 10 Filling the system
“Flow on”
Ball valve handle 45°
flow open, non-return valve off
“Flow off”
Ball valve handle 45°
Flow open, non-return valve off
+
+
Figure 11 Emptying the System
