Operation manual of solar controller SR1568
Page 18 of 87
System 4: Solar system with east/west collector fields, 3-ways valve for tank loading
in layers
Description:
The controller calculates the temperature
difference between collector sensor T1, T0 and
tank base, upper sensor T2, T3. If any difference
is larger than or identical to the adjusted
switch-on temperature difference, then the
corresponding solar circulation pump (R1 and /or
R2) will be switched on, and simultaneously
valve R4 turns to the corresponding tank zone
and this zone will be loaded until the switch-off
temperature difference or the maximum tank
temperature is reached.
The priority logic effects prior loading of the
upper zone of the tank
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