Vaillant ecoTEC plus 618 Specifications download pdf (Page 24)

24 Instructions for installation and servicing ecoTEC

4.13.3 Electric board layout

Burner cable harness

Hydraulic cable harness

Connection for external

eBUS controller

Room thermostat 24 V:

Connection 7, 8 and 9

No bi-directional

interface (analogue only)

Room thermostat 230 V/50 Hz

(remove bridge on connection)

Heating pump

With ecoTEC pro: 1-step pump (plug with 3-pin)

With ecoTEC plus: 2-step pump (plug with 5-pin)

Mains supply: 230 V/50 Hz

2A fuse, slow

Igniter

Caution:

Do not connect

supply voltage!

Risk of damage

to electronics!

Diagnosis via eBUS,

vrnetDIALOG

Accessory module connection

outer probe

ext. flow or return probe

Connection: 230 V

Supply for accessory module

eBUS accessory connection

Fig. 4.15 Connection wiring ecoTEC

4 Boiler installation sequence

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 55 56

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Vaillant ecoTEC plus 618 Specifications Page 24