Vaillant ecoTEC plus VU Series Installation And Maintenance Instructions Manual page 15

5.5.1.2 Closing the electronics box
1. Close the cover (2) by pushing it downwards onto the
electronics box (3).
2. Ensure that all of the clips (1) audibly click into the
brackets.
3. Tilt the electronics box upwards.
5.5.2 Establishing the power supply
1. Observe the relevant regulations and the enclosed con-
nection diagram.
2. Provide one common electricity supply for the boiler
and for the corresponding controller:
–
Power supply: Single-phase, 230 V, 50 Hz
– Fuse protection: ≤ 3 A
3. Connect the product using a fixed connection and a
partition with a contact opening of at least 3 mm (e.g.
fuses or power switches), see Connection diagram
(→ Page 36).
4. Use a flexible line for the mains connection line, which
is routed through the cable duct into the product.
5. Carry out the wiring. (→ Page 15)
6. Screw the ProE plug supplied to a suitable three-core
mains connection cable which complies with the relev-
ant standards.
7. Close the electronics box. (→ Page 15)
8. Make sure that access to the mains connection is al-
ways available and is not covered or blocked.
5.5.3 Carrying out the wiring
Caution.
Risk of material damage caused by incor-
rect installation.
Mains voltage at the incorrect plug terminals
on the ProE system may destroy the elec-
tronics.
▶
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.
4. Only strip the outer sheathing of flexible lines to a max-
imum of 30 mm to prevent short circuits if a strand acci-
dentally comes loose.
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 ProE plug to the supply line.
9. Check whether all conductors are sitting mechanically
securely in the terminals of the ProE plug. Remedy this
if necessary.
0020029173_04 ecoTEC plus Installation and maintenance instructions
10. Plug the ProE plug into the associated PCB slot.
5.5.4 Installing the controller
▶
Install the controller if necessary.
5.5.5 Connecting controllers to the electronic
system
1. Carry out the wiring. (→ Page 15)
2. If you do not connect a room/timer thermostat, bridge
terminals 3 and 4, if no bridge exists.
3. If you connect a room/timer thermostat to terminals 3
and 4, remove the bridge.
4. If you connect a weather compensator or room thermo-
stat (continuous control – connection terminals 7, 8, 9),
leave the bridge inserted between terminal 3 and 4.
5. If you connect a limit thermostat (contact thermostat)
for underfloor heating systems, remove the bridge on
the blue ProE plug (contact thermostat) and connect the
limit thermostat here.
6. Close the electronics box. (→ Page 15)
7. To access pump operating mode 1 (continuously run-
ning pump) for multi-circuit controllers, set D.18 Pump
operating mode (→ Page 22) from 3 (intermittent pump)
to 1.
5.5.6 Connecting a low loss header sensor
1. Connect the low loss header sensor to the edge con-
nector X41 at terminal RF or to the controller. When do-
ing so, observe the instructions for the controller.
2. Plug the edge connector into the PCB slot X41.
3. Activate the low loss header function at the controller.
5.5.7 Connecting a cylinder charging pump
▶
Connect an external cylinder charging pump (to be fitted
on-site) to the pink ProE plug X6.
5.5.8 Connecting additional components
You can actuate an additional component with the aid of the
auxiliary relay that is installed, and you can actuate two other
components with the multi-functional module.
The following components can be actuated:
1. Circulation pump
2. External pump
3. Cylinder charge pump
4. Extractor hood
5. External solenoid valve
6. External fault signal
7. Not active
8. eBUS remote control (not active)
9. Legionella protection pump (not active)
10. Not active.
Installation 5
15