Immergas 3.022648 Instructions For Installation And Use Manual page 25

2.2 ELECTRICAL CONNECTION.
8
7
6
Key:
A Controller;
1 Tank 1 sensor (T2) NTC 10k;
2 Collector 1 sensor (T1) PT1000;
3 Extra sensor for collector 2 - (T4) PT1000;
4 Extra sensor (T3) NTC 10k;
5 Electric power supply;
6 Solar pump (P1);
7 Extra pump or valve (P2);
8 Extra pump or valve (P3) (dry contacts).
A
5
25
1
2
3
4
Fig. 2-2