18
All pr1:
Additionally, the charging pump
A2
is also regulated via the heater boiler temperature
S1
.
Pump
A2
runs, if:
•
S1
exceeds the threshold
min1
• and
S1
is greater than
S4
by the difference
diff3
• and
S4
has not exceeded
max2
• or
S3
is greater than threshold
min2
• and
S3
is greater than
S4
by the difference
diff2
• and
S4
has not exceeded
max2
.
A2 = (S1 > (S4 + diff3) & S1 > min1 & S4 < max2)
or
(S3 > (S4 + diff2) & S3 > min2 & S4 < max2)
All pr2:
Pump
A3
runs, if:
•
S5
exceeds the threshold
min3
• and
S5
is greater than
S6
by the difference
diff3
• and
S6
has not exceeded the threshold
max3
.
A3 = S5 > (S6 + diff3) & S5 > min3 & S6 < max3
Program 112 – 2 independent differential circuits
Example: solar system with return rise
Program 112:
Pump
A1
runs, if:
•
S1
exceeds the threshold
min1
• and
S1
is greater than
S2
by the difference
diff1
• and
S2
has not exceeded the threshold
max1
.
The output
A2
is activated, if:
•
S3
exceeds 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
necessary settings:
max1
max2
min1
min2
diff1
diff2
... limit CYL
S2
... limit return flow
S4
... activation temp. coll.
S1
... activation temp. CYL top
S3
... coll.
S1
- CYL
S2
... CYL
S3
- return flow
S4
à
A1
à
A2
à
A1
à
A2
à
A1
à
A2
Содержание UVR65
Страница 2: ......
Страница 105: ...105 Schematic representation of thresholds...