60
7�5 Solar heating kit
GB0685II - Solar unit: control unit, pump, safety valve, 24
litre expansion tank, loading unit
1� Circulation pump
2� Solar kit cock
3� 3-bar safety valve
4� Charge/drain valve
2
3
In order to prevent the occurrence of undesirable nat-
ural circulation, install a check valve at the outlet to the
collector (MS connection), or preferably make a siphon.
7�5�1 Hydraulic connections
Position and dimensions
RS Solar return
RS
7�5�2 Solar unit connection
The device with solar integration is provided complete with
electronic control unit which was pre-wired at the factory.
– sensor S1 must be positioned on the solar collector
S1 Solar panel sensor
S2 Hot water tank sensor
NC Alarm contact normally closed
NA Alarm contact normally open
C Common
N Neutral (power supply)
L Line (power supply)
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