43
Operating
line
User level Function
Default value
Min
Max
Unit
4140
O
Pump overrun time
20
0
120
min
4141
O
Excess heat discharge
90
60
140
°C
4170 O
Frost prot plant boiler pump
Off ¦ On
Off
Buffer storage tank
4720 F
Auto generation lock
None ¦ With B4 ¦ With B4 and B42/B41
With B4
-
4721
O
Auto heat generation lock SD
8
0
20
°C
4722
F
Temp diff buffer/HC
-5
-20
20
°C
4723 (**)
F
Temp diff buffer/CC
0
-20
20
°C
4724
F
Min st tank temp heat mode
− − −
− − − / 8
95
°C
4726 (**)
F
Max stor temp cooling mode
25
− − − /
10
40 °C
4739 (**)
F
Stratification protection
Off ¦ Always ¦ With solid fuel boiler
Off
4740 (**)
O
Stratif prot temp diff max
5
0
20
°C
4743 (**)
O
Stratiprot anticipation time
60
0
240
s
4744 (**)
O
Strat prot integr action time
120
10
200
s
4746 (**)
O
DHW protection combined
Off ¦ On
Off
4750
F
Charging temperature max
80
8
95
°C
4751
O
Storage tank temp max
90
8
95
°C
4755 F
Recooling
temp
60
8 95 °C
4756 F
Recooling DHW/HCs
Off ¦ On
Off
4757 F
Recooling collector
Off ¦ Summer ¦ Always
Off
4783 F
With solar integration
No ¦ Yes
No
4790
F
Temp diff ON return div
10
0
40
°C
4791
F
Temp diff OFF return div
5
0
40
°C
4795
F
Compar temp return div B4 ¦ B41 ¦ B42
B42
4796 F
Optg action return diversion
Temp decrease ¦ Temp increase
Temp increase
4800
F
Partial charging setpoint
− − −
− − − / 8
95
°C
4810 O
Full charging
Off ¦ Heating mode ¦ Always
Off
4811
O
Full charging temp min
8
8
80
°C
4813 O
Full charging sensor
With B4 ¦ With B42/B41
With B42/B41
DHW storage tank
5010 O
Charging
Once/day ¦ Several times/day
Several times / day
5020
F
Flow setpoint boost
16
0
30
°C
5021
F
Increase of transfer boost
8
0
30
°C
5022 F
Type of charging
with B3 ¦ With B3 and B31 ¦ Legio B3 and
B31
With B3 and B31
5024 O
Switching
differential
5
0 20 °C
5030
O
Charging time limitation
150
− − − /
10
600 min
5040 O
Discharging protection
Off ¦ Always ¦ Automatically
Automatically
5050
F
Charging temperature max
80
8
BZ 5051
OEM
°C
E
=End user
I
=Commissioning
F
=Heating engineer
O
=OEM
BZ
=Operating line
(*) QAA75../78.. only, (**) RIELLOtech CLIMA COMFORT only, (***) RIELLOtech CLIMA TOP only.