64 EN
cod. 3540000272 - Rev. 01 - 01/2024
DANGER OF ELECTRIC SHOCK WITH RISK OF INJU-
RY OR DEATH!
B
The unit must be connected to an efficient grounding sys-
tem in accordance with applicable safety regulations.
Have the efficiency and suitability of the grounding system
checked by professionally qualified personnel; the Manu-
facturer declines any liability for damage caused by failure
to ground the system.
The boiler is pre-wired and equipped with a three-core
connection cable to the electric line without plug. The con-
nections to the grid must be made with a permanent con-
nection and equipped with a bipolar switch with contact
opening of at least 3 mm, interposing fuses of max. 3A be-
tween the boiler and line. Make sure to respect the polari-
ties (LINE: brown wire / NEUTRAL: blue wire / GROUND:
yellow-green wire) in the connections to the electric line.
B
The unit’s power cable MUST NOT BE REPLACED BY
THE USER. If the cable gets damaged, turn the unit off
and have the cable replaced only by professionally
qualified personnel. In case of replacement, use exclu-
sively “HAR H05 VV-F” 3x0.75 mm2 cable with maximum
ext. diameter of 8 mm.
Room thermostat (optional)
B
ATTENTION: THE ROOM THERMOSTAT MUST HAVE
VOLTAGE-FREE CONTACTS. CONNECTING 230V TO
THE ROOM THERMOSTAT TERMINALS WILL PERMA-
NENTLY DAMAGE THE PCB.
When connecting a time control or timer, do not take the
power supply for such devices from their cutoff contacts.
Their power supply must be via a direct connection from
the grid or with batteries, depending on the kind of device.