12
Program 16 - Loading the tank from the boiler
Program 16:
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
.
A1 = S1 > (S2 + diff1) & S1 > min1 & S2 < max1
All pr1:
In addition, if
S3
exceeds the threshold
max2,
pump
A1
is switched off.
Program 32 - Burner requirement via tank sensors
Program 32:
The output
A3
switches on if
S2
falls below the threshold
min3
.
The output
A3
switches off (dominant) if
S1
exceeds the threshold
max3.
A3 (on) = S2 < min3
A3 (off) = S1 > max3
All pr1:
The burner request (
A3
) is only made via
S2
.
The output
A3
switches on if
S2
falls below the threshold
min3
.
The output
A3
switches off (dominant) if
S2
exceeds the threshold
max3.
A3 (on) = S2 < min3
A3 (off) = S2 > max3
Required settings:
max3
… burner req. off SP
S1
A3
min3
… burner req. on SP
S2
A3
Burner
A3
S2 min3
S1 max3
S1
min1
S2
max1
diff1
A1
Required settings:
max1
…
limit TK
S2
A1
max2
… see all pr1
min1
… switch-on temp. boiler
S1
A1
diff1
… burner
S1
– TK
S2
A1
S1
A3
S2
S3
S2
S1
A1
S3 for p1