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5 WATER CIRCUIT
Water circuit
1
Solar collector
2
Storage cylinder
3
Collector probe
4
Disconnect valves
5
Non-return valve
6
Temperature gauge
7
Vent valve
8
Safety valve
9
Pressure gauge
10 Drain
11
Expansion vessel
12 Pump
13 Flow regulator
14 Flow meter
15 Vent cock
16 Manual bleed valve (accessory)
17 Heat transfer fluid recovery
M Collector outlet
R
Collector return
9
If copper pipes are used, joints must be hot brazed.
9
We recommend the use of stainless steel pipes specially
made for solar collectors for the outlet, return and probe
pipes. The probe cable should be of the shielded type.
Pressure drop in solar collectors (*)
(*) With antifreeze-water mix of 33,3% / 66,7% and heat transfer medium temperature = 20°C.
15
16
M
3
30
25
20
15
10
5
0
0
50
100
1
1
2
9
Do not use plastic or multistrate pipes. Operating tempera-
ture can exceed 180°C.
9
Pipe lagging must be able to resist high temperatures (180°C).
150
200
250
Flow rate (l/h)
6
R
8
7
9
M
11
4
°C
6
T
5
12
4
13
14
4
Water control system
300
350
10
17
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