Ferroli BLUEHELIX PRO RRT 24 C Instrucciones De Uso, Instalación Y Mantenimiento página 164

2.4 Gas connection
B
Before making the connection, ensure that the unit is arranged for operation with the type of fuel avai-
lable.
The gas must be connected to the corresponding union (see fig. 55) in conformity with current regula-
tions, with a rigid metal pipe or with a continuous flexible s/steel tube, installing a gas cock between
the system and boiler. Make sure that all the gas connections are tight. Otherwise there may be a risk
of fire, explosion or suffocation.
2.5 Electrical connections
IMPORTANT
B
BEFORE CARRYING OUT ANY OPERATION THAT REQUIRES REMOVING 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 INJURY OR DEATH! B
The unit must be connected to an efficient grounding system in accordance with 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 earth the system.
The boiler is prewired and provided with a three-pole cable, without a plug, for connection to the electric line.
The connections to the grid must be made with a permanent connection and equipped with a bipolar switch
whose contacts have a minimum opening of at least 3 mm, interposing fuses of max. 3A between the boiler
and the line. Make sure to respect the polarities (LINE: brown wire / NEUTRAL: blue wire / GROUND: yellow-
green wire) in the connections to the electric line.
B
The unit's supply 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,
only use cable "HAR H05 VV-F" 3x0.75 mm2 with max. external 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 PERMANENTLY DAMAGE THE PCB.
When connecting a time control or timer, do not take the power supply for such devices from their cutoff con-
tacts. Their power supply must be via a direct connection from the grid or with batteries, depending on the kind
of device.
164
BLUEHELIX PRO RRT 24 C
cod. 3541Q530 - Rev. 00 - 10/2018
EN