Baxi SH 7 COMPACT Installation And Service Manual page 16

5 Before installation
Fig.12 System 1
S1
S2
Fig.13 System 2
S1
R2 S3
16 Solar hydraulic unit
5.3.3
Standard solar power system with an accumulator for all models of control
panel.
The solar control compares the temperature difference between the
collector sensor S1 and the accumulator sensor S2. If the temperature
difference is greater than or equal to the activation value set on the
control for the pump R1, the pump starts up and charges the
accumulator until it reaches either the value for the shutdown difference
or the set maximum accumulator temperature.
R1
BA-0000065-01
Standard solar power system with an accumulator and auxiliary heater for
all models of control panel.
The solar control compares the temperature difference between the
collector sensor S1 and the accumulator sensor S2. If the temperature
difference is greater than or equal to the activation value set on the
control for the pump R1, the pump starts up and charges the
accumulator until it reaches either the value for the shutdown difference
or the set maximum accumulator temperature. Once the temperature for
S3 reaches the configured value or falls below it, the 3-way valve R2
changes to the direction of the boiler until the offset temperature has
been reached.
R1
S2
BA-0000066-01
Installation examples
7729335 - 04 - 12052021