26
A1
A2
S1
S2
S3
S4
A3
SP2
SP1
Program 240 - Solar power system with 2 collector panels and 2 consumers
Only one collector field
portrayable
A1
,
A2
... pumps
A3
……. switch-over valve (A3/S has power when loading TK2)
Program 240:
Pump
A1
runs when:
S1
is greater than the threshold
min1
and
S1
is greater than
S3
by the difference
diff1
and
S3
has not exceeded
max1
and valve
A3
is switched off
or
S1
is greater than the threshold
min1
and
S1
is greater than
S4
by the difference
diff2
and
S4
has not exceeded
max2
and valve
A3
is switched on.
Pump
A2
runs when:
S2
is greater than the threshold
min2
and
S2
is greater than
S3
by the difference
diff1
and
S3
has not exceeded
max1
and valve
A3
is switched off
or
S2
is greater than the threshold
min2
and
S2
is greater than
S4
by the difference
diff2
and
S4
has not exceeded
max2
and valve
A3
is switched on.
Valve
A3
switches relative to the set priority (solar priority)
A1 = S1 > (S3 + diff1) & S1 > min1 & S3 < max1 & (A3 = off)
or
S1 > (S4 + diff2) & S1 > min1 & S4 < max2 & (A3 = on)
A2 = S2 > (S3 + diff1) & S2 > min2 & S3 < max1 & (A3 = off)
or
S2 > (S4 + diff2) & S2 > min2 & S4 < max2 & (A3 = on)
A3
=
dependent
on
preset
priority
S1
S2
min1
min2
S3
S4
max1
max2
diff2
A2, A3
diff1
A1
diff1
A2
diff2
A1, A3
Required settings:
max1
… limit TK1
S3
A1, A2
max2
… limit TK2
S4
A1, A2, A3
min1
… switch-on temp. coll.1
S1
A1
min2
… switch-on temp. coll.2
S2
A2
diff1
…
coll.1
S1
– TK1
S3
A1
… coll.2
S2
– TK1
S3
A2
diff2
… coll.1
S1
– TK2
S4
A1, A3
… coll.2
S2
– TK2
S4
A2, A3
diff3
… see all pr1