Saunier Duval ISOTWIN CONDENS F 35 E Instructions For Use, Installation & Servicing page 34

Output/pressure curve
70
60
50
40
30
20
10
Legend
Speed III
1 By-pass fully shut
2 Open 1/4 turn
3 Open 1/2 turn
4 Open 2 turns
Speed II
5 By-pass fully shut
6 Open 1/4 turn
7 Open 1/2 turn
Speed I
8 By-pass fully shut
9 Open 1/2 turn
1
2
3
4
8
9
500
31
7
6
5
1000 1400
Heating circuit flow rate (l/h)