23
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: The burner requirement (A3) only occurs via sensor S5.
A3 (on) = S5 < min3 A3 (off) = S5 > max3 (dominant)
All programs +4: Both solar loops have separate switch-on thresholds at S1:
Output
A1 retains min1, and A2 switches at min2.
All programs +8: If one of the two solar circuits is active the burner requirement will be
blocked. If both solar circuits switch off the burner requirement is released again with a switch
delay of 5 minutes.
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).
Program 224 - Solar power system with 3 consumers
S1
min1
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 3 S4 A3
min1 … switch-on temp. coll. S1 A1, A2, A3
min2 … see all programs +8
min3 … see all programs +8
diff1 … coll. S1 – CYL 1 S2 A1
diff2 … coll. S1 – CYL 2 S3 A2
diff3 … coll. S1 – CYL 3 S4 A3
CET 1 ... OP 1 OP 123
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