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Program 48- Solar power system with 2 consumers
Program 48: Pump A1 runs when:
S1 is greater than the threshold min1 and S1 is greater than S2 by the difference diff1
and S2 has not exceeded the threshold max1.
Pump A2 runs when:
S1 is greater than the threshold min1 and S1 is greater than S3 by the difference diff2
and S3 has not exceeded the threshold max2.
A1 = S1 > (S2 + diff1) & S1 > min1 & S2 < max1
A2 = S1 > (S3 + diff2) & S1 > min1 & S3 < max2
All programs +1:
Instead of the two pumps, one pump and a three-way valve are used (pump-valve system). Speed
control: Observe the comments on page 7!
Without a priority allocation, tank 2 is filled by priority.
A1 ... common pump A2 ... Valve (A2/S receives power when filling tank TK2)
All programs +2:
In addition, if S4 exceeds the threshold max3, pump A1 is switched off.
All programs +4: Both solar loops have separate switch-on thresholds at S1:
output A1 retains min1, and A2 switches at min2.
The priorities for TK1 and
TK2 can be set in the parameter menu under PA. In addition, a solar
priority function can be set for this diagram in the menu PRIOR.
S1
min1
S2 S3
max1 max2
diff2
A2
diff1
A1
required settings:
max1 … limit TK1 S2 A1
max2 … limit TK2 S3 A2
max3 … see all programs +2
min1 … switch-on temp. coll. S1 A1, A2
min2 … see all programs +4
diff1 … coll. S1 – TK1 S2 A1
diff2 … coll. S1 – TK2 S3 A2
S4 for program +2
S1
S2 S3
S4
A1 A2
SP1 SP2
S4
TK1 TK2
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