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Program 64 - Solar power system with 2 collector panels
Only one collector field
portrayable
Program 64:
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 the threshold
max1
.
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 the threshold
max1
.
A1
=
S1>
(S3
+
diff1) & S1 > min1 & S3 < max1
A2
=
S2>
(S3
+
diff1) & S2 > min2 & S3 < max1
All pr1:
If the difference between collector sensors
S1
and
S2
exceeds the difference
diff3
, the
colder collector is switched off. This prevents heat from being lost in the colder collector when
temperatures are mixed.
All pr2:
In addition, if
S4
exceeds the threshold
max2,
pumps
A1
and
A2
are switched off.
All pr4:
Instead of the pumps, one pump
A1
and a three-way valve
A2
are used.
WARNING:
This program is not intended for systems with two collector fields, since through
a three-way valve one collector field is always operated at standstill.
Note:
The additional application of the priority circuit "All pr1" is recommended.
A1
... common pump
A2
... valve
S1
S2
min1
min2
S3
max1
diff1
A2
diff1
A1
Required settings:
max1
… limit TK
S3
A1, A2
max2
… see all pr2
min1
… switch-on temp. coll.1
S1
A1
min2
… switch-on temp. coll.2
S2
A2
diff1
…
coll.1
S1
– TK
S3
A1
… coll.2
S2
– TK
S3
A2
diff3
… see all pr1
A1
A2
S1
S2
S3
S4
S4 for p2