Ferroli BLUEHELIX HITECH RRT K 50 Instrucciones De Uso, Instalación Y Mantenimiento página 292

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.
The unit's power cable MUST NOT BE REPLACED BY
B
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)
ATTENTION: THE ROOM THERMOSTAT MUST HAVE
B
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.
292
BLUEHELIX HITECH RRT K 50
cod. 3541Z782 — Rev 00 - 10/2022
EN