Operation manual of solar controller SR1568
Page 32 of 87
System 18: Solar system with east/west collector fields, 2 tanks, pump switch
collector, valve switch loading in layers, energy transferring between 2 tanks
Description:
The controller calculates the temperature
difference between collector sensor T1, T0 and
sensor T2, T3 of tank 1. 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, the corresponding
tank 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 tank
1’s upper zone.
Another temperature difference between heat
source T3 of tank 1 and T4 of the object tank 2
can be used to control the pump R3 to load the
tank 2.
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