27VRT 360 Installation Manual
Safety instructions and regulations 8
8.1 Safety instructions
Danger!
Risk of fatal electric shock from
touching live connections.
Before working on the room ther-
mostat, switch off the power
supply and prevent it from being
switched on again.
Only remove the room thermo-
stat from its wall mounting or
base when it is not live.
8.2 Regulations
All wiring must be in accordance with
Building Regulations Part P, current IEE
regulations, and all other relevant regu-
lations and guidelines, and must be car-
ried out by a suitably qualified person.
Use standard commercial cables for the
wiring.
- Minimum wire cross section:
0.75 mm
2
Do not exceed following maximum wire
lengths:
- Bus wires: 300 m
Connections with 230 V and bus wires
must be laid separately when longer
than 10 m.
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