Technische Alternative UVR61-3 - Program 512 - 3 Independent Differential Loops

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Program 512 - 3 independent differential loops
Program 512: 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.
Feed pump A2 runs when:
 S3 is greater than the threshold min2  and S3 is greater than S4 by the difference diff2

and S4 has not exceeded the threshold max2.
The feed pump A3 runs when:
 S5 is greater than the threshold min3  and S5 is greater than S6 by the difference diff3

and S6 has not exceeded the threshold max3.
A1 = S1 > (S2 + diff1) & S1 > min1 & S2 < max1
A2 = S3 > (S4 + diff2) & S3 > min2 & S4 < max2
A3 = S5 > (S6 + diff3) & S5 > min3 & S6 < max3
All programs+1:
if sensor S2 has reached the threshold max1 pump A2 is activated and
pump
A1 continues running. A "cooling function" to the boiler or the heating is thereby
achieved without the occurrence of standstill temperatures at the collector.
CYL 1 CYL 2 CYL 3
S3
S4
A2
S5
A3
S6
S1
S2
A1
Required settings:
max1 … limit CYL 1 S2  A1
max2 … limit CYL 2 S4  A2
max3 … limit CYL 3 S6  A3
min1 … switch-on temp. coll.1 S1  A1
min2 … switch-on temp. coll.2 S3  A2
min3 … switch-on temp. coll.3 S5  A3
diff1 … coll.1 S1 – CYL 1 S2  A1
diff2 … coll.2 S3 – CYL 2 S4  A2
diff3 … coll.3 S5
–
CYL 3 S6  A3
S1 S3 S5
min1 min2 min3
S2 S4 S6
max1 max2 max3
diff2
A2
diff1
A1
diff3
A3