Vaillant Flue pipe Specifications download pdf (Page 28)

28 Instructions for installation and servicing ecoTEC 839592_12

X 2

BUS

— +

24V

7 8 9

230V

L N 3 4 5

X 20

X40

X31

X12

X41

Electronic control box

Aqua sensor

ecoTEC plus only:

NTC

Hot water

outlet

Fan unit

Ignition electrode

NTC

flow

Diverter valve

Gas valve assembly

Water pressure sensor

NTC

return

X 20/5 red

X 20/7 black

X 20/8 blue

X 2/12 green

X 2/11 red

X 2/9 black

Pump

X 20/18 red (24 VDC)

X 20/9 blue (earth)

X 20/16 blue (earth)

X 20/13 black

X 20/12 black

X 20/4 grey (PWM)

X 20/3 black (Hall signal)

X 20/17 red (24 VDC)

X 2/15 brown C

X 2/8 blue D

X 2/16 black A

X 2/7 pink B

X 2/3 red (+ 5V)

X 2/2 black (earth)

X 2/6 green (signal)

X 2/5 violet (signal)

X 2/1 black

NTC

Plate heat

exchanger

X 2/4 orange

X 2/10 black

Thermal fuse

Plug

coupling

Fig. 4.16 Connection wiring ecoTEC combination boiler

4 Boiler installation sequence

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 63 64

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Vaillant Flue pipe Specifications Page 28

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