Vaillant ecoTEC plus VUI Series, Installation And Maintenance Instructions Manual

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Installation and maintenance instructions 0020308121_04
7.10.5.4 Stripping the cables correctly
6 – 8 m
m
6 – 8 m
m
L
N
230 V
≥ 3
0 m
m
≥ 4
0 m
m
6 –
8 m
m
≥ 3
0 m
m
0 – 30 V
1. Strip the flexible cables as shown in the figure. In doing
so, ensure that the insulation on the individual conduct-
ors is not damaged.
2. Only strip inner conductors just enough to establish
stable connections.
3. When stripping the wires, ensure copper strands do not
fall into the control box.
4. To avoid short circuits resulting from loose individual
wires, fit conductor end sleeves on the stripped ends of
the conductors.
5. Screw the respective plug to the connection cable.
6. Check whether all conductors are inserted mechanic-
ally securely in the plug terminals. Remedy this if ne-
cessary.
7. Plug the plug into the associated PCB slot.
(
→
Appendix L)
7.10.6 Connecting the product with a fixed
connection
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. Ensure that the 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. For the power supply cable, use a flexible three-core
cable that complies with the relevant standards, which
is routed through the grommet into the product.
6. Connect the power supply cable to slot X1 on the PCB.
(
→
Appendix L)
7. Observe the correct installation when routing the power
supply cable. (
→
Section 13.7.19)
8. Ensure all electrical cables are in the correct cable
guides and away from hot appliance components.
9. 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).
10. 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.
7.10.7 Connecting the shift-load cylinder to the heat
generator electronics
1. Open the electronics box. (
→
Section 7.10.3)
2. Guide the cables into the product and route them cor-
rectly. (
→
Section 7.10.5.3)
3
2
1
A
A
B
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 wiring 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 grommet (1) .
5. Secure the grommets on the cable ducts using the
enclosed spring clips.