Electric Board Layout - Vaillant ecoTEC plus 612 Instructions For Installation And Servicing

4 Boiler installation sequence

4.14.3 Electric board layout

Fig. 4.15 Connection wiring ecoTEC
26
Supplied By www.heating spares.co Tel. 0161 620 6677
eBUS accessory connection
Burner cable harness
Accessory module connection
Diagnosis via eBUS,
vrnetDIALOG
outer probe
ext. flow or return probe
Hydraulic cable harness
Connection for external
eBUS controller
Room thermostat 24 V:
Connection 7, 8 and 9
No bi-directional
interface (analogue only)
Mains supply: 230 V/50 Hz
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)
2A fuse, slow
Igniter
Connection: 230 V
Supply for accessory module
Instructions for installation and servicing ecoTEC
Caution:
Do not connect
supply voltage!
Risk of damage
to electronics!