Ariston 250I Instructies voor installatie, gebruik en onderhoud - Pagina 17

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The main circuit board on the appliance is fitted with an earth contact
for operating purposes only, not for safety purposes.
Open the cover to access the connection board located on the right,
rear side of the product and carry out the connections according to
the chosen configuration:
PERMANENT ELECTRICAL CONNECTION (24h/24h)
Use this configuration whenever users do not have a two-tier elec-
tricity rate. The water heater will always be connected to the power
supply network to ensure 24h operation.
AUX
SG2
SG1
N
ELECTRICAL CONNECTION WITH DUAL POWER SUPPLY AND
HC-HP SIGNAL (power supply 24h/24h)
It offers the same cost advantages as the two-tier rate configuration
but, additionally, it provides rapid heating thanks to the BOOST mode
that activates the heating even with the HP rate.
1) Connect a bipolar cable to the appropriate signal contacts on the
meter.
2) Connect the signal bipolar cable (B) to the appropriate EDF con-
nector "SG1" which is inside the connection box (make a hole in
the rubber plugs to create a suitable passage section).
WARNING: The EDF signal has a 230V voltage.
3) Activate the HC-HP function through the P1 parameter in the in-
staller menu.
AUX
SG2
SG1
N
L
A
L
EDF
N
2 A
B

AUXILIARY CONNECTION

If you have a PV system to be connected or an SG signal available,
you can connect a bipolar cable from the inverter or the SG signal
cable (alternatively, not both) to the connection box (secure the cable
into the dedicated cabling sheath).
Connect this cable (C) to the connector called "SG2" and activate the
PV (P11) or SG (P13) function via the installer menu.
WARNING: signal 230 V.
Only for SYS or TWIN SYS models, if you have an auxiliary heat gen-
erator (e.g. boiler) and you would like to use it instead of the integra-
tion carried out by the heating element, you can connect a bipolar
cable (D) from the heat generator (if provided) to the product connec-
tion box (secure the cable into the dedicated cabling sheath).
Connect the cable to the connector called "AUX" and set the P14
parameter to 1 via the installer menu.
N
16 A
AUX
If you connect the SYS version to the boiler/stove, it is advisable to
use upper sensor slot S3.
If you connect the TWIN SYS version to the boiler/stove, it is advis-
able to use sensor slot S4 for the lower heat exchanger and S3 for
the upper one).
If you connect the SYS or TWIN SYS versions to the solar control unit
(lower heat exchanger), you can use the lower sensor slot on its own
(S2) or both sensor slots (S2) and (S3/S4).
N
16 A
D
C
SG2
SG1
N
A
L
N
16 A
17 / EN