4 213 321 V01 KDT RegelModul Solar EN.docx
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U12
SP1
T1U
T1O
OUL
Parameters
Designation
Value Min.
Max.
Comments
R
W
07-008
Max. storage
temp for return
incr.
80 °C
30.0 99.0
If the temperature at the consumer sensor top
(e.g. TO1) increases above the set value, the return
flow increase is blocked.
TxO > 07-008 = Switching valve return flow incr.
deenergised
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08-080
Switch-on
difference
return flow
increase
10 K
0.0
50.0
If the temperature at the storage tank sensor rises
above the heating circuit return flow tempe
setting value, the return flow increase is enabled.
If the maximum storage tank temperature return flow
increase (07-008) is exceeded, the return flow
increase is blocked.
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08-081
Switch-off
difference
return flow
increase
5 K
0.0
50.0
If the temperature at the storage tank sensor drops
below the heating circuit return flow tempe
setting value, the return flow increase is blocked.
If the maximum storage tank temperature return flow
increase (07-008) is exceeded, the return flow
increase is blocked.
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13.1.12. ZONLA option zone charging
The function of stratified or zone charging can be selected using parameter (08-105).
Depending on the selected charging strategy (08-050), the two heat exchangers
are charged depending on the temperature level and the reference value. Using the speed
control of the pump, the attempt is made to charge the active heat exchanger with the
fewest possible charging cycles to the required reference or maximum value.
Charging always starts at the bottom zone bottom tank sensor TxU; if the threshold value switchover reference
charging (high yield 08:051) is exceeded or the sensor TKx is greater than TxO by the switch-off differential
(08:002) then charging takes place to the upper part top tank sensor TxO.
Pact/ Pnom (08-030; calculated) = HighEnergy_avg > HighEnergy (Pnom * (08-051))
or TKx > TxO + DiffOff (08-002)
= Charging to upper zone TxO
Xs = TxO + charging reference increase diff opt.
Pact/ Pnom (08-030; calculated) = HighEnergy_avg < HighEnergy (Pnom * ((08-051)
– 20 %))
or TKx < TxO + DiffOff ((08:002) / 2)
= Charging to lower zone TxU
Xs = TxU + charging reference increase diff opt.
Zone charging:
0 = Off
1 = Zone charging
2 = Stratified charging
This option can be activated in ID (08-105).
Charging starts with a positive difference between collector sensor TKO and storage tank bottom sensor T1U
greater than the switch-on difference (08-001). If the current output rises to a value (08-051) greater than the
calculated solar nominal output then a charging attempt takes place to the top heat exchanger or to the storage
tank top sensor T1O. If the difference here is greater than the switch-off difference (08-002), charging takes place
to the top heat exchanger or T1O. The variable for the speed control then results from temperature at T1O plus
optimised or charge increase (08-064), depending on the selected strategy.
