Electrical Connections; Connecting The Mains Supply; Connecting The Ambient Thermostat - Westen Boyler digit 240/40 Fi Manual Del Usuario

17. ELECTRICAL CONNECTIONS

This machine is only electrically safe if it is correctly connected to an efficient earth system in compliance with current safety regula-
tions.
Connect the boiler to a 230V single-phase earthed power supply using the supplied three-pin cable, observing correct LIVE-NEUTRAL
polarity.
Use a double-pole switch with a contact separation of at least 3 mm.
When replacing the power supply cable, fit a harmonised HAR H05 VV-F' 3x0.75mm2 cable with a maximum diameter of 8 mm.
Access to the power supply terminal block
• disconnect the boiler from the mains power supply using the two-pole switch;
• remove the two screws fixing the control panel to the boiler;
• rotate the control panel;
• remove the cover and access the wiring area (figure 10).
The 2A fast-blowing fuses are incorporated in the power supply terminal block (to check and/or replace the fuse, pull out the black fuse
carrier).
(L) = Live (brown)
(N) = Neutral (blue)
Earth (yellow-green)
=
(1) (2) = Contact for ambient thermostat
IMPORTANT:
respect polarity L (LIVE) -N (NEUTRAL).
Figure 11
WARNING
If the appliance is directly connected to a underfloor system, install a safety thermostat to prevent the latter from over-
heating.

18. CONNECTING THE AMBIENT THERMOSTAT

• access the power supply terminal block (figure 11) as described in the previous section;
• remove the jumper on terminals (1) and (2);
• thread the two-wire cable through the grommet and connect it to these two terminals.
INSTRUCTIONS FOR FITTERS 926.008.2 - EN
44