12
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 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:
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 CYL 1 and CYL 2 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 (see “solar priorities”
for more details).
S1
min1
S2 S3
max1 max2
diff2
A2
diff1
A1
Required settings:
max1 … limit CYL 1 S2 A1
max2 … limit CYL 2 S3 A2
max3 … see all programs +2
min1 … switch-on temp. coll. S1 A1, A2
min2 … see all programs +4
diff1 … coll. S1 – CYL 1 S2 A1
diff2 … coll. S1 – CYL 2 S3 A2
CET 1 ... OP 1 OP 12
S4 for program +2
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