Immergas HERCULES Condensing 26 2 E Manual page 19

Technical Documentation
Head at the other additional high temperature zones.
The use of several pumps positioned downstream from the
hydraulic manifold allows to provide a high system flow rate.
The graphics below represent the trend of the head available
to system zones 2 and 3 at high temperature, depending on
pump speed and with the by-pass inserted between flow and
return.
A - Head available to the additional zones (2nd and 3rd zone) at maximum speed
B - Head available to the additional zones (2nd and 3rd zone) at speed 4,5
C - Head available to the additional zones (2nd and 3rd zone) at speed 3
STHCkW ed 04/09
A
B
C
17
Technical Documentation
Flow rate Litres/h
HERCULES Condensing Export