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Program 176 - Solar power system with 2 consumers and feed pump function
Program 176: 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.
The feed pump A3 runs when:
S5 is greater than the threshold min2 and S5 is greater than S4 by the difference diff3
and S4 has not exceeded the threshold max3.
A1 = S1 > (S2 + diff1) & S1 > min1 & S2 < max1
A2 = S1 > (S3 + diff2) & S1 > min1 & S3 < max2
A3 = S5 > (S4 + diff3) & S5 > min2 & S4 < max3
All programs +1: Instead of both pumps A1 and A2 one pump A1 and a three-way valve A2
are deployed.
Speed control: Observe the comments on page 9!
Without a priority allocation, cylinder 2 is filled by priority.
A1 ... common pump A2 ... Valve (A2/S receives power when filling cylinder CYL 2)
All programs +2: If both cylinders have reached their maximum temperature due to the solar
power system, pumps
A1 and A3 are switched on (reverse cooling function).
All programs +4: Both solar loops have separate switch-on thresholds at S1:
Output
A1 retains min1, and A2 switches at min3.
S1 S5
min1 min2
S2 S3 S4
max1 max2 max3
diff2
A2
diff1
A1
diff3
A3
Required settings:
max1 … limit CYL 1 S2 A1
max2 … limit CYL 2 S3 A2
max3 … limit CYL 1 S4 A3
min1 … switch-on temp. coll. S1 A1, A2
min2 … switch-on temp. CYL 2 S5 A3
min3 … see all programs +4
diff1 … coll. S1 – CYL 1 S2 A1
diff2 … coll. S1 – CYL 2 S3 A2
diff3 … CYL 2 S5 – CYL 1 S4 A3
CET 1 ... OP 1 OP 12
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