Econcept 50 A
12
2.5 Electrical connections
Connection to the electrical grid
The boiler must be connected to a single-phase, 230 Volt-50 Hz electric line.
The unit’s electrical safety is only guaranteed when correctly connected to an efficient earthing
system executed according to current safety standards. Have the efficiency and suitability of the
earthing system checked by professionally qualified personnel. The manufacturer is not responsible
for any damage caused by failure to earth the system. Also make sure that the electrical system is
adequate for the maximum power absorbed by the unit, as specified on the boiler dataplate, in
particular ensuring that the section of the system’s cables is suitable for the power absorbed by the
unit.
The boiler is prewired and provided with a cable for
connection to the electricity 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. It is important to
respect the polarities (LINE: brown wire / NEUTRAL: blue
wire / EARTH: yellow-green wire) in making connections
to the electrical line.
The boilers are comprehensive of a special Y-type
power cable. If the cable gets damaged, switch off
the unit and have it changed by a Ferroli authorized
Service Centre. If changing the electric power
cable, use solely “HAR H05 VV-F” 3x0.75 mm2
cable with a maximum outside diameter of 8 mm.
Room thermostat, external unit and auxiliary controls
Below the electrical control box is a multipolar terminal
block, for connecting:
• Room thermostat (3-4)
WARNING: THE ROOM THERMOSTAT MUST NOT
HAVE LIVE CONTACTS. CONNECTING 230V TO
TERMINALS (3-4) WILL CAUSE IRREVERSIBLE
DAMAGE TO THE ELECTRONIC BOARD.
When connecting a room thermostat with daily or
weekly program, or a timer, avoid taking the power
supply to these devices from their switch contacts.
Their power supply must derive from a direct connec-
tion to the mains or using batteries, depending on the
type of device.
This appliance must use a room thermostat, for
increased comfort and greater energy savings.
• Remote control (9-10), for remote control and regulation of the boiler, with weekly chronothermostat and
climatic regulation functions.
• Optional DHW storage probe to be fitted to 11-12 otherwise leave 10K -1,8K resistors fitted (removing
resistors will create a boiler malfu result in no C. heating or hot water production
.
Using a storage thermostat to be fitted to 5-6, leave the resistor (only 10KOhm) fitted and set the boiler
on "economy".
Fig. 5
E
B
A
2
3
4
5
6
7
8
9
10 11 12
F
R
A
Room thermostat
B
Storage ON-OFF switch
E
Remote control
F
DHW storage sensor
R
Resistors 1,8 - 10 KOmn
Fig. 6
Fig. 6a