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Appendix
Code
Parameter
D.017
Control type
D.018
Pump operating mode
D.020
Max. DHW temperature
target value
D.022
DHW demand
D.023
Heating mode status
D.024
Air pressure sensor actual
value
D.025
Ext. eBUS signal: Cylinder
charging
D.026
Auxiliary relay
34
Values
Unit
Increment, select, explanation
Min.
Max.
–
0
1
Heating flow/return temperature
control changeover
0: Flow
1: Return (conversion for underfloor
heating)
If you have activated the return
temperature control, the function
for automatically limiting the heat-
ing output using the volume flow
remains active. The partial heat
load that is selected under D.000
(auto = max.) continues to be the
upper limit.
–
1
3
Setting
1 = Comfort (continuously operat-
ing pump)
The internal pump is switched on
when the heating flow temperature
is not at Heating off and the heat
requirement is enabled via an ex-
ternal control
3 = Eco (intermittently operating
pump)
Internal pump is switched on every
25 minutes for 5 minutes once the
overrun time has elapsed
50
70
°C
Max. set value for target cylinder
value
1
–
Current value
Domestic hot water requirement via
C1/C2, impeller or APC
0: Off
1: On
–
Current value
Summer/winter mode (heating
off/on)
0: Blocked
1: Released
–
Current value
Pa
–
Current value
Domestic hot water generation
enabled by eBUS control
0: Off
1: On
–
1
10
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extraction hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not act-
ive)
9 = Anti-legionella pump (not act-
ive)
10 = Solar valve (not active)
Installation and maintenance instructions ecoTEC exclusive 0020189875_01
Default
Own
setting
setting
0
3
65
–
Not ad-
justable
–
Not ad-
justable
–
Not ad-
justable
–
Not ad-
justable
2
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