Ferroli ECONCEPT 51 A Instructions D'utilisation, D'installation Et D'entretien page 43

ECONCEPT 51 A
Two mixed heating circuits and one direct heating circuit
Check/Change parameter P02 of the "Transparent Parameters Menu" to 1.
Change parameter P.02 of the "System Type Menu" to 1.
Change parameter P.09 of the "System Type Menu" to 1.
For the electrical connection and the zone system settings, refer to the "FZ4 zone regu-
lator" handbook
138
Two mixed heating circuits, one direct heating circuit and one DHW circuit with pump
Check/Change parameter P02 of the "Transparent Parameters Menu" to 2.
Change parameter P.02 of the "System Type Menu" to 1.
Change parameter P.09 of the "System Type Menu" to 1.
For the electrical connection and the zone system settings, refer to the "FZ4 zone regu-
lator" handbook
138
3.4 Electrical connections
Connection to the electrical grid
B
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.
The boiler is prewired and provided with a Y-cable and plug for connection to the elec-
tricity 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 re-
spect the polarities (LINE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green
wire) in making connections to the electrical line. During installation or when changing
the power cable, the earth wire must be left 2 cm longer than the others.
B
The user must never change the unit's power cable. If the cable gets damaged,
switch off the unit and have it changed solely by professionally qualified person-
nel. 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 (optional)
B
CAUTION: The room thermostat must have clean contacts. CONNECTING
230 V. TO THE TERMINALS OF THE ROOM THERMOSTAT WILL IRREPA-
RABLY DAMAGE THE ELECTRONIC CARD.
When connecting a remote timer control or a timer switch, do not take the pow-
er supply for these devices from their cut-out contacts. Their power supply must
be taken with a direct connection from the mains or with batteries, depending
on the kind of device.
FZ4
72/139 72/139
Zona 1 Zona 2
TS TS
I*
PZ PZ
SM SM
M M
298
D
fig. 20
FZ4
72/139 72/139 72/139
Zona 1 Zona 2 Zona 3
TS TS
I*
PZ PZ
SM SM
M M
298
D
fig. 21
cod. 3541H790 - Rev. 00 - 12/2015
Accessing the electrical terminal block
The electrical terminal block is located inside a sealed box at the bottom left of the cab-
inet. Make the electrical connections as shown in the wiring diagram on fig. 37 and run
the cables through the special cable glands.
72/139
2
Zona 3
PR
1
4 5 6 7
E
( ( (
300
302
42
PR
130 42 DHW temperature sensor (not supplied)
72 Room thermostat (not supplied)
72b Room thermostat (not supplied)
95 Diverter valve (not supplied)
A = Heating phase
B = DHW phase
F
C = Neutral
NOTE: For valves with 2 wires and spring return, use the connections B and C
130 DHW circulating pump (not supplied)
138 External probe (not supplied)
139 Remote timer control (not supplied)
256 Modulating heating circulating pump signal
298 Cascade temperature sensor (not supplied)
299 Input 0 -10 Vdc
300 Burner lit contact (voltage-free contact)
301 Fault contact (voltage-free contact)
302 Remote reset input (230 Volt)
306 Heating system circulating pump (not supplied)
307 Heating system second circulating pump (not supplied)
For connection in cascade (max. 6 modules)
1. Connect the modules as shown in fig. 23 (example with 4 modules)
A
25 26 27 28 29 30 31 32
A
10 11 12
A 1st Module
B 2nd Module
C 3rd Module
D 4th Module
2. Carry out all the electrical connections (terminals 4 to 24) on module no. 1
3. On the remaining modules, only connect the power supply and possible contacts
for: burner lit (300), fault contact (301) and remote reset input (302).
306
8 9 10 11 12 25 26 27 28 29 30
A
B C
(
301
130/307
95
13 14 15 16 17 18 19 20 21 22 23 24
72
299 138 298
139
fig. 22 - Electrical terminal block
B C
25 26 27 28 29 30 31 32 25 26 27 28 29 30
B
10 11 12
fig. 23 - Connection in cascade
31 32
256
72B 42
D
31 32 25 26 27 28 29 30 31 32
C D
10 11 12 10 11 12
43
EN