Electrical Connections - Ideal Boilers Esprit 2 Installation And Servicing Manual

37 ELECTRICAL CONNECTIONS

WARNING . This appliance MUST be earthed.
A mains supply of 230 V ~ 50 Hz is required.
The fuse rating should be 3A. All external controls and wiring
must be suitable for mains voltage.
Wiring external to the boiler MUST be in accordance with the
current I.E.E. (BS.7671) Wiring Regulations and any local
regulations.
38 INTERNAL WIRING
A pictorial wiring diagram is shown in Frame 40.
This photo shows an external programmer lead (on
the left) and the mains cable (on the right).
1. Route the mains cable from bottom left-hand rear of
boiler casing to plug & socket connection.
2. Wire the permanent live supply into the 5-way remote
plug terminals, L3, N &
IMPORTANT.
A permanent live is ESSENTIAL in order for the
advanced diagnostic controls to function correctly.
Ensure that the lengths of the live and neutral wires
are shorter than the earth wires so that if the cable
slips in its anchorage the current carrying wire
become taut before the earth wires.
3. Wire any switched live supply into L2 or connect L1
and L2 via external control switching as shown in
Frame 39. In either case remove the wire link fitted
to L1 to L2.
4. Secure the mains lead with the cable clamp.
5. Connect the mains lead connector. Ensure it is fully
located into the socket.
6. Support the incoming cable(s) with the clips provided.
32
INSTALLATION
.
Wiring should be 3 core PVC insulated cable, not less than
0.75 mm 2 (24 x 0.2mm), and to BS 6500 Table 16. For IE
reference should be made to the current ETCI rules for
electrical installations.
Connection must be made in a way that allows complete
isolation of the electrical supply such as a double pole switch
having a 3mm (1/8") contact separation in both poles, or a
plug and socket, serving only the boiler and system controls.
The means of isolation must be accessible to the user after
installation.
ESPRIT 2 -
Installation and Servicing