Vaillant ecoTEC plus VU 446/5-5 (H-GB) Installation And Maintenance Instructions Manual page 56

Code Parameter
D.017 Heating control type
D.018 Pump mode setting
D.020 Max. set value for target cylinder
value
D.022 Domestic hot water demand
D.023 Heating demand
D.024 Status of the air pressure monitor
D.025 Domestic hot water generation en-
abled by eBUS control
D.026 Control of the optional grey relay
X16
D.027 Switching accessory relay 1 for 2 in
7 multi-functional module accessory
D.028 Switching accessory relay 2 for 2 in
7 multi-functional module accessory
D.029 Heating flow (heating circuit or cylin-
der charging)
D.033 Fan speed target value
D.034 Fan speed actual value
D.035 Position of the prioritising diverter
valve
D.040 Flow temperature
D.041 Return temperature
D.044 Digitised ionisation value
D.047 Outdoor temperature (with weather-
compensated control)
D.050 Offset for minimum speed
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Values or explanations
0 = Flow temperature control
1 = Return temperature control
1 = Comfort (continuously operating pump)
3 = Eco (intermittently operating pump)
50 to 65 ℃
0 = Off
1 = on
0 = Off
1 = on
0 = open
1 = closed
0 = No
1 = Yes
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Smoke flap
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Anti-legionella pump (not activated)
10 = Solar valve (not active)
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump (not activated)
4 = Smoke flap
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Anti-legionella pump (not activated)
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump (not activated)
4 = Smoke flap
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = eBUS remote control (not active)
9 = Anti-legionella pump (not activated)
l/min
rpm
rpm
Not connect.
Actual value in °C
Actual value in °C
0 to 1,020
Good flame < 400
No flame > 800
Actual value in °C if an outdoor temperature sensor is
connected to X41
0 to 3,000 rpm
Installation and maintenance instructions ecoTEC plus 0020261389_03
Default User-spe-
setting cific setting
0
3
65 ℃
Not ad-
justable
Not ad-
justable
Not ad-
justable
2
1
2
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
Not ad-
justable
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