D Standard Specification; B Wiring Diagram; Inspection And Maintenance Work - Overview - Vaillant electronicVED lite Operating Instructions Manual

B Wiring diagram
4
L1' L2' L3'
3
1 Safety cut-out
2 Electronic safety switch
Inspection and maintenance work – Overview
C
Note
The table below lists the manufacturer's minimum requirements with regard to inspection and maintenance. If na-
tional regulations and directives require shorter inspection and maintenance intervals, you should observe these
instead of the intervals listed in the table.
Maintenance work
Check that the product functions correctly
Descale the product
Clean the water filter in the cold water connector
Cleaning the valve's flow regulator on the draw-off point
D Standard specification
Standard specification at 15 °C
Specific conductivity σ ≤
Specific
resistance
ρ ≥
Ω cm
mS/m
900 111
1000 100
1100 91
1200 83
1300 77
0020323586_00 Installation and maintenance instructions
U
F
θ>
1
2
L
L
L
Standard specification at 20 °C
Specific
resistance
ρ ≥
µS/cm Ω cm
1111 800
1000 890
909 970
833 1070
769 1175
3 Printed circuit board
4 Heating element
Specific conductivity σ ≤
µS/cm
mS/m
125 1250
112 1124
103 1031
93 935
85 851
Standard specification at 25 °C
Specific conductivity σ ≤
Specific
resistance
ρ ≥
Ω cm
mS/m
735 136
815 123
895 112
985 102
1072 93
µS/cm
1361
1227
1117
1015
933
47