Immergas HERCULES Condensing 26 2 E Manual page 17

Technical Documentation
Head available at zone 1 (standard) with by-pass inserted
The use of the pump positioned downstream from the hydrau-
lic manifold allows to provide a high system flow rate.
The graphics below represent the trend of the head available
to zone 1 system (standard), depending on pump speed and
with the by-pass inserted between flow and return.
A - Head available to the system with the standard pump (1st zone) at maximum speed
B - Head available to the system with the standard pump (1st zone) at speed 4,5 (factory setting)
C - Head available to the system with the standard pump (1st zone) at speed 3
STHCkW ed 04/09
A
B
C
15
Technical Documentation
Flow rate Litres/h
HERCULES Condensing Export