249
cod. 3540000251 - Rev. 00 - 03/2024
EN
ALHENA C
2.5 Electrical connections
ATTENTION
B
BEFORE CARRYING OUT ANY OPERATION REQUI-
RING REMOVAL OF THE CASING, DISCONNECT THE
BOILER FROM THE ELECTRIC MAINS WITH THE
MAIN SWITCH.
NEVER TOUCH THE ELECTRICAL COMPONENTS OR
CONTACTS WITH THE MAIN SWITCH TURNED ON!
DANGER OF ELECTRIC SHOCK WITH RISK OF INJU-
RY OR DEATH!
B
The unit must be connected to an efficient grounding sy-
stem 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
between the boiler and line. Make sure to respect the po-
larities (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 exclusi-
vely
“HAR H05 VV-F”
3x0.75 mm2 cable with maximum
ext. diameter of 8 mm.
