Ferroli BlueHelix HiTech RRT H Instrucciones De Uso, Instalación Y Mantenimiento página 304

2.4 Gas connection
Before making the connection, ensure that the unit is arranged for operation
B
with the type of fuel available.
The gas connection must be made to the relevant connection (see fig. 60) in
compliance with current legislation, using a rigid metal pipe or a continuous
wall flexible hose in stainless steel, placing a gas valve between the system
and boiler. Make sure all the gas connections are tight. Otherwise there may
be a risk of fire, explosion or suffocation.
2.5 Electrical connections
ATTENTION
BEFORE CARRYING OUT ANY OPERATION REQUIRING REMOVAL OF THE
B
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
INJURY OR DEATH!
The unit must be connected to an efficient grounding system in accordance with
B
applicable safety regulations. Have the efficiency and suitability of the grounding
system checked by professionally qualified personnel; the Manufacturer 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 connections to the grid must be made with a perma-
nent connection 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 re-
spect the polarities (LINE: brown wire / NEUTRAL: blue wire / GROUND: yellow-
green wire) in the connections to the electric line.
The unit's power cable MUST NOT BE REPLACED BY THE USER. If the cable
B
gets damaged, turn the unit off and have the cable replaced only by profes-
sionally qualified personnel. In case of replacement, use exclusively "HAR H05
VV-F" 3x0.75 mm2 cable with maximum ext. diameter of 8 mm.
Room thermostat (optional)
ATTENTION: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE CON-
B
TACTS. CONNECTING 230V TO THE ROOM THERMOSTAT TERMINALS
WILL PERMANENTLY DAMAGE THE PCB.
When connecting a time control or timer, do not take the power supply for such de-
vices 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.
304
BlueHelix HiTech RRT H
cod. 3541V484 - Rev 02 - 01/2024
EN