Immergas HERCULES SOLAR 26 1A Manual page 19

Technical Documentation
N.B.:Regarding the wiring diagram, settings, signals, etc. see
the " Zones digital control unit" technical sheet.
Head available at the additional low temperature zone.
In functioning condition with mixed systems, the use of several
pumps guarantees a greater total flow rate to the system.
The graphics below represent the trend of the head available to
the low temperature zone system, depending on pump speed
and with the by-pass inserted between flow and return.
A - Head available to the additional zones (2nd zone) at maximum speed
B - Head available to the additional zones (2nd zone) at speed 4,5
C - Head available to the additional zones (2nd zone) at speed 3
STHSC ed 0710
A
B
C
Technical Documentation
17
Flow rate Litres/h
HERCULES Solar 26 1A