Operation manual of solar controller SR1568
Page 34 of 87
System 20: Solar system with east/west collector fields, 2 tanks, valve switch loading
tank, thermal energy transferring between 2 tanks
Description:
The controller calculates the temperature
difference between collector sensor T1, T0 and
sensor T2 of tank 1, T4 of tank 2. 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, the tank 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.
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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