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4 .4 .6
Pump
SSB85/120/160 boilers are fitted with a circulator pump. The graph in the following figure shows the head range of the pump depending on the flow rate
compared to the relevant pressure drop.
SSB85 – UPS15-58
HD
20
18
16
14
12
10
8
6
4
Head available for
the system at speed2
2
0
0
2
Fig. 12 SSB85 Pump curve
It is important to ensure the pump has the correct flow rate
m
for the system to avoid a low water circulation situation. In
event of an inadequate flow rate, the safety devices of the
boiler will automatically stop the burner.
SSB
4
6
Flow rate / GPM
SSB85
pressure drop
speed1
8
10
12
Installation | 17
speed3
speed2
14
16
6720818456 (2018/06) US
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