Making The Electrical Connections; Connecting The Mains Supply - Baxi POWER HT 1.850 Manual De Uso Destinado Al Usuario Y Al Instalador

12. MAKING THE ELECTRICAL CONNECTIONS

Electrical safety of the appliance is only guaranteed by correct grounding, in accordance with the rules in force.
Connect the boiler to a 230V monophase + ground power supply by means of the three-pin cable supplied
with it and make sure you connect polarities correctly.
Use a double-pole switch with a contact separation of at least 3mm in both poles.
In case you replace the power supply cable fit a HAR H05 VV-F' 3x0.75mm cable with an 8mm diameter max.
2
IMPORTANT: Check that the overall current drawn by accessories connected to the appliance is less
than 2 A. If the value is greater, a relay must be wired between the boiler control circuit board and the
accessories drawing the higher current.
Cover
Terminal board
Terminal board
Cover
Terminal board
Figure 8
CAUTION
If the appliance is directly connected to a underfloor system, install a safety thermostat to prevent the latter from overheating.
12.1 TERMINAL BLOCKS ACCESS
• Cut off power to the boiler with the two-pole switch.
• Remove the top facia panel cover (which is held by magnets).
• Unscrew the two screws holding the facia panel in place.
• Swing the facia panel forwards.
Main terminal block M1
• Remove the clip-on cover from terminal strip M1.
• The main terminal block incorporates a fast blow 3.15 A fuse (figure 8). Remove the black fuse holder to
check and/or replace the fuse.
Terminal block M2
• Unscrew the fixing screw and remove the cover from terminal block M2.
Terminal block M3
• Unscrew the fixing screws and remove the main cover.
ISTRUCTIONS PERTAINING TO THE INSTALLER 7650231.02 - en
19