Vaillant ecoTEC plus Installation And Maintenance Instructions Manual page 25

7.12.4 Establishing the power supply
Caution.
Risk of material damage due to high con-
nected voltage.
At mains voltages greater than 253 V, elec-
tronic components may be damaged.
▶
Make sure that the rated voltage of the
mains is 230 V.
1. Observe all valid regulations.
2. Make sure that the nominal mains voltage is 230 V.
3. Provide one common power supply for the boiler and
for the corresponding control:
–
Power supply: Single-phase, 230 V, 50 Hz
– Fuse protection: ≤ 3 A
4. Do not interrupt the mains supply with a time switch or
programmer.
5. Open the electronics box. (→ Page 24)
6. Connect the product using a fixed connection and an
electrical partition with a contact gap of at least 3 mm
(e.g. fuses or power switches).
7. Isolation should preferably be by a double pole
switched fused spur box having a minimum contact
separation of 3 mm on each pole. The fused spur box
should be readily accessible and preferably adjacent to
the boiler. It should be identified as to its use.
8. Route a three-core power supply cable that complies
with the relevant standards through the grommet and
into the product.
–
Power supply cable: Flexible duct
9. Carry out the wiring. (→ Page 24)
10. Remove the supplied plug from the bracket in the elec-
tronics box and screw the plug onto the power supply
cable.
11. Close the electronics box.
12. Make sure that access to the power supply is always
available and is not covered or blocked.
7.12.5 Installing the product in a wet room
Danger!
Risk of death from electric shock!
If you install the product in a room with high
levels of moisture, e.g. a bathroom, observe
the nationally recognised technical standards
for electrical installations.
▶
Connect the product using a fixed con-
nection and an electrical partition with a
contact gap of at least 3 mm (e.g. fuses or
power switches).
▶
Use a flexible line for the power supply
cable, which is routed through the grom-
met into the product.
0020244998_04 ecoTEC plus Installation and maintenance instructions
1. Open the electronics box. (→ Page 24)
2. Detach the plug from the PCB slot for the power supply
(X1).
3. Use a suitable, three-core power supply cable that com-
plies with the relevant standards.
4. Carry out the wiring. (→ Page 24)
5. Close the electronics box.
6. Observe the flue-gas connection that is required on a
room-sealed air/flue system. (→ Page 23)
7.12.6 Connecting controls to the electronics
1. Install the control if necessary.
2. Open the electronics box. (→ Page 24)
3. Carry out the wiring. (→ Page 24)
4. Observe the wiring diagram in the appendix.
Condition: Connecting a weather-compensated control or a room temperat-
ure control via eBUS
▶
Connect the control to the eBUS connection.
▶
Bridge the 24 V = RT connection (X100 or X106), if there
is not already a bridge.
Condition: Connecting a low-voltage control (24 V)
▶
Remove the bridge and connect the control to the
24 V = RT connection (X100 or X106).
Condition: Connecting 230 volt controller
▶
Connect the switched live supply with the terminal
marked RT at X1 (beside the LNPE connections) then
remove the link at X100 (do NOT connect 230 volt to
any other terminal than the RT connection).
Condition: Connecting a limit thermostat for underfloor heating
▶
Remove the bridge and connect the limit thermostat to
the Burner off connection.
5. Close the electronics box.
6. For multi-circuit controls, change D.018 from Eco (inter-
mittently operating pump) to Comfort (continuously op-
erating pump). (→ Page 35)
7.12.7 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.
7.12.7.1 Using the auxiliary relay
1. Connect an additional component directly to the integ-
rated auxiliary relay using the grey plug on the PCB.
2. Carry out the wiring.
3. To start up the connected component, select the com-
ponent in diagnostics code D.026. (→ Page 35)
25