Electrical Board Layout - Vaillant eco TEC plus 415 Instructions Manual

4.4.3

Electrical board layout

Fig. 4.9 Connection wiring
Installation and Servicing ecoTEC plus
Supplied by HeatingSpares247.com
X31
X12
Boiler installation sequence 4
eBUS accessory connection
Burner cable harness
Accessory module connection
Diagnosis via eBUS
vrnet DIALOG
ext. flow or return probe
outer probe
ext. flow or return probe
Hydraulic cable harness
Connection for external
eBUS controller
Room thermostat 24V:
Connection 7, 8 and 9
No bi-directional
interface (analogue only)
Mains supply: 230V / 50Hz
Room thermostat 230V / 50Hz
(remove bridge on connection)
Heating pump
2A fuse, slow
Igniter
Connection: 230V
Supply for accessory module
Caution:
Do not connect
supply voltage!
Risk of damage
to electronics!
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