Electrical Connections - Baxi NUVOLA DUO-TEC GA Series Instruction Manual For Users And Fitters

SINGLE SPLITTING KIT
(ALTERNATIVE ACCESSORY)
For special installations of the fumes inlet/outlet ducts, the sin-
gle splitting kit (C), supplied as an accessory, can be used. This
accessory, in fact, can be used to move the inlet and outlet in
any direction. This type of installation makes it possible to dis-
charge exhaust fumes both outside the building and into single
flue ducts. Comburent air can be drawn in at a different loca-
tion from that of the flue terminal. The splitting kit is fixed to
the boiler turret (100/60 mm) and allows the comburent air and
outlet fumes to enter/leave the two separate ducts (80 mm).
For further information, read the assembly instructions supplied with the accessory.
SOME OUTLET DUCT INSTALLATION EXAMPLES AND THEIR RELATIVE MAXIMUM LENGTHS ARE SHOWN IN ANNEX
"SECTION" D AT THE END OF THIS MANUAL.

11. ELECTRICAL CONNECTIONS

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 3 mm.
When replacing the power supply cable, fit a harmonised "HAR H05 VV-F" 3x0,75 mm
To access the terminal block, remove the front boiler panel (fixed with two screws at the bottom), turn the control box downwards
and access terminal blocks M1, M2, M3, used for the electrical connections, after removing the protective cover. The 3.15 A fast-
blowing fuses are incorporated in the power supply terminal block (to check and/or replace the fuse, pull out the black fuse carrier).
SEE WIRING DIAGRAM IN ANNEX "SECTION" B AT THE END OF THIS MANUAL
Make sure that the overall rated power input of the accessories connected to the appliance is less than 2A. If it is higher, install
a relay between the accessories and the electronic board.
The connections in terminal blocks M1- M3 are high voltage (230 V). Before making connections, make sure the appliance is
disconnected from the power supply. Respect the input polarity on terminal block M1: L (LINE) - N (NEUTRAL).
TERMINAL BLOCK M1
(L) = Live (brown)
(N) = Neutral (light blue).
= Earth (yellow-green).
(1) (2) = contact for Room Thermostat.
Put back the jumper on terminals 1-2 of boiler terminal
block M1 if the room thermostat is not used or if the
Remote Control is installed.
TERMINAL BLOCK M2
Terminals 1 - 2: connection to the Remote Control (low voltage) supplied as an accessory.
Terminals 4 - 5 (common): external Probe connection (supplied as an accessory)
Terminals 3-6-7-8: not used.
Terminals 9-10: storage boiler sensor connection.
If the appliance is connected to an underfloor system, install a limit thermostat to prevent the latter from overheating.
Use the relative cable grommets at the bottom of the boiler to thread the cables through to the terminal blocks.
7114043.01 (1-06/13)
cable with a maximum diameter of 8 mm.
2
30