Connecting The Mains Supply - Baxi LUNA3 COMFORT HT Gebrauchsanleitung Für Den Benutzer Und Installateur

16. CONNECTING THE MAINS SUPPLY

This machine is only electrically safe if it is correctly connected to an efficient earth system in compliance with current
safety regulations.
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 3mm.
When replacing the power supply cable, fit a harmonised HAR H05 VV-F' 3x0.75mm2 cable with a maximum diameter
of 8mm.
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).
M1 M2
0706_2905 / CG_1932
Figure 9
CAUTION
If the appliance is directly connected to a underfloor system, install a safety thermostat to prevent the latter from overheating.
16.1 DESCRIPTION OF THE ELECTRICAL CONNECTIONS TO THE BOILER
Rotate the control box downwards and access terminal blocks M1 and M2, used for the electrical connections, by remo-
ving the two safety covers.
Terminals 1-2 Terminal block M1: for connecting the "TA" ambient thermostat.
Terminals 1-2 Terminal block M2: for connecting the AVS 77 climate controller. It is not necessary to respect the polarity
of the connections.
Remove the jumper on terminals 1-2 "TA" of terminal block M1.
Read the instructions provided with this accessory for correct installation and programming.
Terminals 3-4: for connecting the SIEMENS QAC34 external probe, supplied as an accessory. Read the instructions
provided with this accessory for correct installation.
Terminals 5-6: for connecting the DHW priority probe, supplied as an accessory, for connecting mono-thermal boilers to
an external storage boiler.
Terminal 7: Not used.
Terminals 8-9-10: zone valve power input (figure 14).
INSTRUCTIONS FOR FITTERS 926.420.3 - EN
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