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M 1261-06-X AquaSol Ferroli Installation Manual.doc
July 2006
Page 14 of 24
L-N-PE
Power
Supply
PE 1-2
Pump Supply
3-4
Thermostat for boiler control if required, VOLT FREE
5-6
Auxiliary supply for combination boilers with secondary
storage
CYL GREY
Cylinder sensor upper
CYL BLACK
Cylinder sensor lower
COL
Collector
sensor
COL
CYL GREY
CYL BLACK
Optimax HE
Combination Boiler
7.8
Electrical Connections:
The unit has a factory fitted cable. This cable should be connected to a 3 Amp
switched fused spur.
The collector sensor must be connected to the terminals marked COL. Polarity is not
important.
The AquaSol will give a signal to the Ferroli boiler to prevent it starting up the after
heating function if the solar water temperature is above a temperature level of 60°C.
WARNING! Isolate the electrical mains supply before removing the outer
cover!
Fig f. AquaSol Circuit board
H=pump constant high power
H/L= pump high -> max low power level
Auto= pump speed optimised to system
Boiler terminals 1 & 2