Electrical Installation - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

5 Installation
5.10

Electrical installation

The electrical installation must only be carried out by a quali-
fied electrician.
Danger!
Risk of death from electric shock!
Mains connection terminals L and N remain
live even if the on/off switch is turned off:
▶
Switch off the power supply.
▶
Secure the power supply against being
switched on again.
5.10.1 Opening the electronics box
▶
Open the electronics box as shown in the illustration.
5.10.2 Carrying out the wiring
Caution.
Risk of material damage caused by incor-
rect installation.
Mains voltage at incorrect terminals and plug
terminals may destroy the electronics.
▶
Do not connect any mains voltage to the
eBUS terminals (+/-).
▶
Only connect the mains connection cable
to the terminals marked for the purpose.
1. Route the supply lines of the components to be connec-
ted through the cable duct provided on the underside of
the product on the left.
2. Use strain reliefs.
3. Shorten the supply lines as necessary.
30 mm max.
4. To prevent short circuits if a strand accidentally comes
loose, only strip the outer sheathing of flexible lines to a
maximum of 30 mm.
18
5. Ensure the inner conductor insulation is not damaged
when stripping the outer sheathing.
6. Only strip inner conductors just enough to establish
good, sound connections.
7. To avoid short circuits resulting from loose individual
wires, fit conductor end sleeves on the stripped ends of
the conductors.
8. Screw the respective plug to the supply line.
9. Check whether all conductors are sitting mechanically
securely in the terminals of the plug. Remedy this if
necessary.
10. Plug the plug into the associated PCB slot; see the
connection diagram in the appendix.
5.10.3 Connecting the shift-load cylinder to the
heat generator electronics
1. Open the electronics box. (→ Page 18)
2. Carry out the wiring. (→ Page 18)
1
2
3
Caution.
Risk of material damage caused by incor-
rect cable routing
Cables may become damaged if they come
into contact with hot parts of the product.
▶
Lay cables in such a way that they do not
touch any hot parts of the product.
3. Route the shift-load cylinder's cable harness (2) with the
grommets (3) through the attached cable ducts on the
shift-load cylinder and on the heat generator.
4. On the boiler, use the cable duct (1).
5. Secure the grommets on the cable ducts using the en-
closed spring clips.
Installation and maintenance instructions ecoTEC plus 0020209593_01