Vaillant ecoTEC plus VU 446/5-5 (H-GB) Installation And Maintenance Instructions Manual page 43

Code Parameter
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
D.051 Offset for maximum speed
D.060 Number of switch-off sequences for
the safety cut-out
D.061 Number of flame sequence control
faults
D.064 Average ignition time
D.065 Maximum ignition time
0020261389_02 ecoTEC plus Installation and maintenance instructions
Values or explanations
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 ... 1,020
Good flame < 400
No flame > 800
Actual value in °C if an outdoor temperature sensor is
connected to X41
0 ... 3,000 rpm
−990 ... 0 rpm
Number of shutdowns
Number of unsuccessful ignitions in the last attempt
s
s
Appendix
Default User-spe-
setting cific setting
Not ad-
justable
2
1
2
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justable
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justable
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justable
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justable
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justable
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justable
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justable
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justable
30
-45
Not ad-
justable
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justable
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justable
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justable
43