319
EN
cod. 3541V481 - Rev. 00 - 06/2021
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 units 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.
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