Vaillant eco TEC plus 415 - Page 24

Installation and Servicing ecoTEC plus24
Fig. 4.10 Mains Supply Connection
NTC
flow
X 20/8 blue
X 20/16 blue (earth)
green/yellow
fuse T2E
250 Volts
green/yellow
green/yellow
X 20/18 red (24 Vdc)
X 20/9 blue (earth)
X 20/4 grey(PWM)
X 20/3 black (Hall signal)
X 20/17 red (24 Vdc)
black link
X 20/5 red
X 20/7 black
NTC
return
Ignition electrode
Gas valve assembly
Fan unit
Pump
connection
Chassis earth
987+- 4 53
230V24VBUS
NL
Electronic control box
X2
red
red
X20
black
4 Boiler installation sequence
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