15
Program 80 - Single solar power system and tank load from boiler
Program 80:
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
.
The 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
Program 81 (all pr1):
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
.
S1
S3
min1
min2
S2
S4
max1
max2
diff2
A2
diff1
A1
Required settings:
max1
… limit TK
S2
A1
max2
… limit TK
S4
A2
max3
… see all pr4
min1
… switch-on temp. coll.
S1
A1
min2
… switch-on temp. boiler
S3
A2
diff1
…
coll.
S1
– TK
S2
A1
diff2
… boiler
S3
– TK
S4
A2
S1
S3
min1
min2
S2
max1
max2
diff2
A2
diff1
A1
Required settings:
max1
… limit TK
S2
A1
max2
… limit TK
S2
A2
max3
… see all pr4
min1
… switch-on temp. coll.
S1
A1
min2
… switch-on temp. boiler
S3
A2
diff1
… coll.
S1
– TK
S2
A1
diff2
… boiler
S3
– TK
S2
A2
S1
S2
S3
S4
A1
A2