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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 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: When both tanks have reached their maximum temperature via the solar system,
the pumps A1 and A3 are switched on (re-cooling function).
All programs +4: Both solar circuits have separate switch-on thresholds on S1.
The output A1 continues to retain min1 and A2 switches with min3.
All programs +8: The limiting of tank TK1 is made via the independent sensor S6 and the maximum
threshold max1 (no more maximum threshold on S2)
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 S5
min1 min2
S2 S3 S4
max1 max2 max3
diff2
A2
diff1
A1
diff3
A3
required settings:
max1 … limit TK1 S2 A1
max2 … limit TK2 S3 A2
max3 … limit TK1 S4 A3
min1 … switch-on temp. coll. S1 A1, A2
min2 … switch-on temp. TK2 S5 A3
min3 … see all programs +4
diff1 … coll. S1 – TK1 S2 A1
diff2 … coll. S1 – TK2 S3 A2
diff3 … TK2 S5 – TK1 S4 A3
S1
S2
S3
S4
A1
A2
SP1 SP2
S5S4 A3
TK1 TK2
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