15
The feed pump A2 runs when:
S3 is greater than the threshold min2 and S3 is greater than S2 by the difference diff2
and S2 has not exceeded the threshold max2.
A1 = S1 > (S2 + diff1) & S1 > min1 & S2 < max1
A2 = S3 > (S2 + diff2) & S3 > min2 & S2 < max2
All programs +2:
If sensor S2 has reached max1 (or if S4 has reached threshold max3 along with all programs
+4), pump A2 is switched on, and pump A1 keeps running. This provides a cooling function
for the boiler / heater without causing standstill temperatures in the collector.
All programs +4:
In addition, if S4 exceeds the threshold max3, pump A1 is switched off.
All programs +8: With re-cooling activated (all programs +2) A3 runs concurrently.
Program 96 - Buffer and hot water cylinder load via boiler fired with solid fuel
Program 96: 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.
A1 = S1 > (S2 + diff1) & S1 > min1 & S2 < max1
A2 = S3 > (S4 + diff2) & S3 > min2 & S4 < max2
S1 S3
min1 min2
S2 S4
max1 max2
diff2
A2
diff1
A1
Required settings:
max1 … limit CYL 1 S2 A1
max2 … limit CYL 2 S4 A2
max3 … see all programs +2
min1 … switch-on temp. boiler S1 A1
min2 … switch-on temp CYL 1. S3 A2
min3 … see all programs +2
diff1 … boiler S1 – CYL 1 S2 A1
diff2 … CYL 1 S3 – CYL 2 S4 A2
diff3 … see all programs +1, +2
A1
A2
S1
S2
S3
S4
CYL 1 CYL 2
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