5 Installation
14 Installation and maintenance instructions Betacom 3 0020229560_00
5.7.1 Opening and closing the electronics box
1. To open the electronics box, follow the instructions in
the specified sequence.
2. To close the electronics box, follow the instructions in
reverse order.
5.7.2 Cable route
1 24-V eBUS cable route
2 230-V eBUS cable
route
5.7.3 Carrying out the wiring
1. Shorten the connection cables to the appropriate
lengths to prevent them from causing damage inside
the electronics box.
2. Screw the plug to the connection cable.
3. Plug the plug into the slot provided on the PCB.
5.7.4 Establishing the power supply
1. Observe all relevant regulations.
– The applicable regulations state that the connection
must be made via an electrical partition with a con-
tact opening of at least 3 mm at each pole.
2. Make sure that the rated voltage of the mains is 230 V.
3. Provide one common electricity supply for the boiler
and for the corresponding controller:
– Power supply: Single-phase, 230 V, 50 Hz
– Fuse protection: ≤ 3 A
4. Open the electronics box.
5. Observe the routing of the power supply cable (1) in the
electronics box in order to guarantee the strain relief.
6. Carry out the wiring. (→ Page 14)
7. Close the electronics box.
8. Screw the supplied plug to a three-core mains connec-
tion cable that complies with the relevant standards.
9. Connect the plug for the mains connection cable.
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