Vaillant ecoTEC pro VUW 6/5-3 Series Installation And Maintenance Instructions Manual page 25

7.9.4 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.
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)
7.9.5 Connecting controllers to the electronic
system
1. Install the controller if necessary.
2. Open the electronics box. (→ Page 24)
3. Carry out the wiring. (→ Page 24)
4. Observe the connection diagram in the appendix.
Condition: Connecting a weather compensator or a room temperature con-
troller via eBUS
▶
Connect the controller 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 controller (24 V)
▶
Remove the bridge and connect the controller 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 controllers, change D.018 from Eco (in-
termittently operating pump) to Comfort (continuously
operating pump). (→ Page 31)
0020244995_04 ecoTEC pro Installation and maintenance instructions
7.9.6 Connecting additional components via
VR 40 ("2 in 7" multi-functional module)
1. Install the components in accordance with the respect-
ive instructions.
Condition: Components connected to relay 1
▶
Activate D.027. (→ Page 31)
Condition: Components connected to relay 2
▶
Activate D.028. (→ Page 31)
7.9.7 Actuating the circulation pump according to
requirements
1. Carry out the wiring.
2. Connect the supply line for the external button using
terminals 1 (0) and 6 (functional drawing) on the X41
edge connector, which is supplied with the controller.
3. Plug the edge connector into the PCB slot X41.
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