0020308121_04 Installation and maintenance instructions 25
7.10 Electrical installation
Only qualified electricians may carry out the electrical install-
ation.
Danger!
Risk of death from electric shock!
The power supply terminals L and N remain
live:
▶ Disconnect the product from the power
supply by switching off all power supplies
at all poles (electrical partition with a con-
tact gap of at least 3 mm, e.g. fuse or cir-
cuit breaker). Information on safe isolation
can be found in the Health and Safety Ex-
ecutive guidance HSG85.
▶ Secure against being switched back on
again.
▶ Wait for at least 3 minutes until the capa-
citors have discharged.
▶ Check that there is no voltage. Use test
equipment approved to GS38 to confirm
that the electricity supply is disconnected.
All work must comply with the current IET Wiring Regula-
tions.
The isolator shall be situated next to the appliance for new
systems and, where practicable, replacement appliances.
The mains electrical supply to the appliance must be through
a fused double pole isolator.
Any additional components that are connected to the appli-
ance that require 230 Volts must be connected to the same
supply as the appliance.
External fuse 3 Amps.
When stripping the wires, ensure copper strands do not fall
into the electronics box.
The product must be earthed.
7.10.1 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.
▶ Never use a connection cable with
earthed plug when installing the product in
a moist environment.
▶ 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).
▶ Any switch or appliance control using
mains electricity must not be within reach
of a person using the bath or shower.
120 cm
2
4
0
cm
2
2
5
cm
1
0
2
1
2
1
60 cm
60 cm
225 cm
6
0
cm
60 cm
225 cm
6
0
c
m
2
1
2
1
1
2
0
1. Install the product outside of zones 0 and 1 (BS 7671)
(figure only used as a guide).
2. In all cases the installation must be in accordance with
the latest amendments to the latest edition of the IET
Wiring Regulations (BS 7671).
3. Check the IP rating of any control units to be used on
this appliance.
4. Connect the product with a fixed connection.
(→ Section 7.10.6)
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 that the mains voltage is 230 V.
9. Install a suitable junction box.
10. Wire the power supply cable and the cable for the
house installation within the junction box.
11. Observe the flue-gas connection that is required on a
room-sealed air/flue system. (→ Section 7.2.5)
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