Diagram A0
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Diagram A0:
Solar system with two consumers, feed pump, burner requirement
Sensors
Outputs
T1…. Collector
A1…. Solar pump loop 1
T2…. Tank TK1 top
A2…. Solar pump loop 2
T3…. Tank TK1 bottom
A3…. Feed pump TK1
T4…. Tank TK2 bottom
A4…. Feed pump TK2
T5…. Boiler
T6…. Tank TK2 top
Program A0:
Function according to
diagram.
A1 = T1 > (T3 + diff1) & T3 < max1
A2 = T1 > (T4 + diff2) & T4 < max2
A3 = T6 > (T2 + diff3) & T6 > min2 & T2 < max3
A4 = T5 > (T6 + diff4) & T5 > min1 & T6 < max4
T1 T5
min1
diff1 diff2 diff4
A1 A2 A4
T6
T3 T4 max4
max1 max2 min2
diff3
A3
T2
max3
Required settings:
diff1
…coll. T1 – TK1 T3
A1
diff2
…coll. T1 – TK2 T4
A2
diff3
…TK2 T6 – TK1 T2
A3
diff4
…boiler T5 – TK2 T6
A4
min1
…switch-on temp. boiler T5
A4
min2
…switch-on temp. TK2 T6
A3
max1
…limit TK1 T3
A1
max2
…limit TK2 T4
A2
max3
…limit TK1 T2
A3
max4
…limit TK2 T6
A4
Additional
: Priority
Vorr
:
(typical: A11, A22, A30, A40)
TK2
TK1