Vaillant Solar System and auroSTOR unvented solar..., Start-Up, Maintenance And Troubleshooting Manual

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Manual - Solar hot water systems 0020009607_02 34
5.2 Functional diagram
6
7
9
2
C
D
4
11
3
10
1
B A
5
12
M
WW
M
8
Fig. 5.9 Functional diagram
Key
1 Boiler
2 auroSTOR solar cylinder
3
230 V
∼
motorised 2 port valve (supplied with the solar cylinder)
4 Immersion heater
5 230 V
∼
motorised 2 port valve
6 auroTHERM collector
7 Solar pump unit
8 Protection
vessel
9 Solar expansion vessel
10 Automatic air separator system
11 Hot
water expansion vessel
12 Thermostat mixing valve
A Boiler
flow
B Boiler return
C Solar circuit flow
D Solar circuit return
5 Installation