Potterton Sirius two WH Installation, Operation And Maintenance Instructions page 13

Wall hung stainless steel condensing boilers
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HYDRAULIC RESISTANCE
9
8
WH 50
7
6
WH 60
5
4
3
WH 70
2
1
0
Q (l/h)
MODULATING PUMP OPERATION GRAPHS
WH 50
WH 60
WH 70
13
7112240.02 (1-07/13)

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