Ariston ELIOS 25 User manual

F
DIGITAL CONTROL UNIT
FOR THERMAL SOLAR SYSTEMS
ARISTON - ELIOS 25 - 3104047

2
OVERVIEW
This device is a centralized control unit for thermal solar panels. Supplied with 5 outputs (Load Relays + Alarm Relays) and 4
+nputs (2roDes) it is aDle to manaIe a system conſIuration that can De selected amonI2common types of layouts. 9hen a
speciſc installation is selectedthe control unit automatically manaIes the outputs and inputs used to control the valvesthe
pumpsthe inteIrative sources and the proDes used in the type of installation selected.
/oreover on the DacMlit L%& display it is possiDle to visualize the hydraulic diaIram of the installation set upthe state of the
outputsthe proDes as well as several other data and informations.
The power unit permits to reset the factory-set default data; for further information see the parameter P11 ‘UNIT’.
DESCRIPTION OF THE KEYS
MENU KEY CANCEL KEY MANUAL KEY CONFIRMATION KEY
SELECTION KEYS
RESET KEY

3
TECHNICAL FEATURES
Power supply238` v1 5*z
Power aDsorption4 8A
Sensors type4 ZPt1 Class $&IN
Sensor operatinIranIe-5uC .. +2 uC (collector)
-5uC .. +11uC ($oiler)
Temperature readinIranIe-4uC .. 2uC
Accuracyv1 uC
Resolution1 uC (2 uF)
Offset adLustmenton S1v5.uC
on S2v5.uC
on
S3v5.uC
on S4v5.uC
Installer Password ..  (default )
Acoustic Signal: On/Off (default On)
$acMlight timing: 2sec from last Meypress
OUT2 Relay Logic: NORN.O. RE8N.C.
non-editable logic for layouts
with 2 collectors (default N.O.)
OUT3 Relay Logic: NORN.O. RE8N.C.
(default N.O.)
OUT4 Relay Logic: NORN.O. RE8N.C. (default N.O.)
Output relay contacts rating:
For version with 4 SPST on-off relays:
4Z2(1)A maZ"238`(SPST)
Contacts powered.
For version with 2 SPST on-off relays + 2 semiconductor relays:
2Z2(1)A maZ"238`(SPST)
2Z2(1)A "238`(45 .. 5 *z)
Contacts powered.
Alarm relay contacts rating: 4(1)A maZ"238`(SP&T)
Protection grade: IP 4
Operating temp. range: uC .. 4uC
Storage temp. range: -1uC .. +5uC
*umidity limits: 2 ..  R*non-condensing
Case: Material: A$S 8 self-eZtinguishing
Color: Signal 9hite (RAL 3)
&imensions: 15Z1 Z4(9Z*Z&)
9eight: `23 gr. (version with probe)
`553 gr. (version without probe)
Installation: 9all-mount
NORMATIVE REFERENCES
The product complies with the following standards
(EMC 24/1/EC and L8& 2/5/EC):
CEI-EN-3-1 (22)
CEI-EN-3-2-(1)
AVAILABLE ACCESSORIES AND SPARES
ŖAccessories for free contacts: 2 Z238` inputs and 2
free voltage outputs.
ŖPt1 probe -5uC .. +2uC grey cable.
ŖPt1 probe -5uC .. +11uC blue cable.
Ŗ$rass pocMet 1/2ŒZ3mm

4
INSTALLATION
TO INSTALL THE DEVICE, PERFORM THE
FOLLOWING OPERATIONS:
¨
1Remove the central screw and the plastic door.
The installation technician shall operate in full
compliance with all the applicable technical standards
in order to grant the unit safety.
DWARNING
¨
3ASSEM$LY 9IT*CA$LE INPUT ON T*E REAR PANEL:
if the cable fasteners (delivered with the unit) are not
reSuired for installationuse a screwdriver to remove
the base blocMs permitting the cables to pass through
and ſt the blocMs delivered (see point ).
¨
¨
2Remove the two screws shown in the drawingthen
remove the whole body from the base.

5
ASSEM$LY 9IT*CA$LE INPUT ON T*E LO9ER SI&E: ſt
the cable fasteners and/or the blocks delivered with the unit.
4Fix the power unit base to the wall.
Fit the cover again with the electronics at the base.
5
Make the electrical connectionsfollowing the
appropriate layout for the type of controller purchased
(see page and ).



VERSION WITH 4 SPST ON-OFF RELAY OUTPUTS, CONTACTS POWERED
WARNING!
Before wiring the appliance be sure to turn the mains power off.
?
WARNING! S1 (or ‘COL’)S2S3 and S4 are Pt1 temperature sensors. For S1 sensor the -5uC..+2uC range probe
(grey cable) must be usedwhile the probes with the range of -5uC..+11uC (blue cable) can be used for the other probes.
9hen setting up installations with 2 solar panelsthe probes corresponding to S1 and S4 m u s t b e e x c l u s i v e l y o f t h e
-50°C .. +200°C range type. The relay outputs relative to 1234 loads are powered (238`); the output of the auxiliary
alarm relay is changeover type (SP&T) with voltage free contacts. It is advisable to ſt a 1A 258` fuse on the power unit
mains capable to intervene in case of short circuits on loads.
IN ORDER TO CHECK THAT THE DEVICE IS WORKING CORRECTLY IT IS NECESSARY FOR THE LOADS TO BE CONNECTED.
TERMINAL $OAR&)ROUN&IN): On the base of the control unit case is located a brass terminal board for connecting the
ground protection conductors of the load devices connected to the control unit.
OUT 4
FUSE 10A
ALARMOUT 1OUT 2OUT 3 230V~
±10%
50Hz


VERSION WITH 2 SPST ON-OFF RELAY OUTPUTS + 2 SEMICONDUCTOR RELAY OUTPUTS (VARIABLE COLLECTOR
PUMP SPEED), CONTACTS POWERED
WARNING! S1 (or ‘COL’)S2S3 and S4 are Pt1 temperature sensors. For S1 sensor the -5uC..+2uC range probe
(grey cable) must be usedwhile the probes with the range of -5uC..+11uC (blue cable) can be used for the other probes.
9hen setting up installations with 2 solar panelsthe probes corresponding to S1 and S4 m u s t b e e x c l u s i v e l y o f t h e
-50°C .. +200°C range type. The relay outputs relative to 1234 loads are powered (238`); the output of the auxiliary
alarm relay is changeover type (SP&T) with voltage free contacts. It is advisable to ſt a 1A 258` fuse on the power unit
mains capable to intervene in case of short circuits on loads.
IN ORDER TO CHECK THAT THE DEVICE IS WORKING CORRECTLY IT IS NECESSARY FOR THE LOADS TO BE CONNECTED.
TERMINAL $OAR&)ROUN&IN): On the base of the control unit case is located a brass terminal board for connecting the
ground protection conductors of the load devices connected to the control unit.
OUT 4
FUSE 10A
ALARMOUT 1OUT 2OUT 3 230V~
±10%
50Hz
SOLID
STATE
SOLID
STATE
?
WARNING! Before wiring the appliance be sure to turn the mains power off.
OUT 1 e OUT 2 are semiconductor solid state relays suitable to drive the speed of a circulation
pump. In case they are used to drive other electric devices (i.e. motorized valves) P12, %MN1
and/or %MN2 must be set to 100% (maximum speed).


Fit the door again to close the power unit.

WARNING!
When closing the unit please ensure that the removable
wiring terminals have been inserted with the correct
orientation (the terminals screws must be facing upward).
STARTING
TURNING ON AND OFF
To turn the control unit on and offpress the ‘ esc ’ key for
at least 3 seconds.
9hen the control unit is turned on it will carry out a diagnosis
of the internal circuitry to verify its correct operation and the
red led will ƀash three times.
If the control unit reveals no anomalies the red led will remain
onotherwise it will continue to ƀash Suickly and the display
will show the type of error.
BACKLIGHT
$y pressing any key the backlight of the display is activated.
The backlight automatically shuts off after about 2seconds
from the last key depressure.
ACOUSTIC SIGNALS
The control unit is supplied with an internal buzzer that gives
the user an acoustic feedback in case of pressure on the keys
alarms and failure. The acoustic signal can be disabled by
properly setting the relevant ‘ Installer Parameter ’.
TEST FUNCTION FOR LOAD WIRINGS CHECK
Through this functionavailable at the Installer Parameter P
the control unit cyclically activates the loads wired to the unit


so that the installer can verify the accuracy of the wirings
performed.
DISPLAYING TEMPERATURES AND ENERGY PRODUCED
The alphanumeric display of the power unit will normally
show the temperature detected by the probes connected
as well as the quantity of energy produced. The energy will
be expressed in K9h + M9h. The counting of K9hwhen
reaching 1 K9hwill be set to zero and the M9h counter
will increase by 1. The addition of the two counters will give
the total energy produced (i.e. 15 K9h + 12 M9h 12.15
M9h). Press ‘ S‘ or ‘ T‘ to cyclically select the probe of
which you need to see both the temperature and the quantity
of energy produced:
ÎCOL ÎS_2 ÎS_3 ÎS_4 ÎK9h ÎM9h Î
DISPLAYING SUN / ANTI-FREEZE
&uring normal operationthe ‘SUN’ icon will be always lit on
the display. 9hen the power unit detects a condition which
forces the manifold pump to get started the ‘SUN’ icon will
be ƀashing.
9hen the Anti-freeze function is activatedboth ‘SUN’
and ‘SNO9’ icons will be lit; when the power unit detects
a temperature which forces the anti-freeze function to get
startedthe ‘SNO9’ icon will also be ƀashing.
DISPLAY OF COLLECTOR PUMP SPEED
WARNING!
Visualization of this parameter is available only for
version with variable collector pump speed.
If the ‘ S‘ or ‘ T‘ keys are pressed during normal operation
the central unit will not only show the temperature as read
by the connected probes but it will also display the solar
collector pump speed as a percentage.
As regards the FS2 parameterthe power unit will show
this parameter set at if the OUT2 outlet is not connected.
Alternativelyif the selected installation diagram does not
require installation of a collector pump at outlet OUT2this
parameter will only be displayed with the values (outlet
N..) or 1 (outlet N.C.)i.e. it will work as an ON /OFF
type outlet.
AUTOMATIC / MANUAL / ABC (Automatic Boiler Control)
OPERATION
The control unit can manage the installation selected in 3
different modes:
- AUTOMATIC: in this mode the control unit automatically

1
manages and controls the operation of the
installation according to the programmed
data.
- MANUAL: the collector pump is continuously powered;
the only active controls will be those related
to the maximum temperature and safety.
- A$C: this mode is identical to the Manual mode
except that the collector pump will be
activated only when the temperature of the
collector exceeds ‘ T A$C ’ programmed in
the relevant installer parameter.
RESET
In order to reset the devicep r e s s t h e k e y l a b e l l e d a s
‘ RESET ’ located behind the removable door; DO NOT USE
PINS OR NEEDLES.
INSTALLER PARAMETERS
To access the installer parameters press the ‘ ‘ key.
Entering the Password
The display will show ‘PWD 0000’ with the leftmost digit
ƀashing thus requesting for the correct password.
In order to set the 4 password digits use the ‘ S‘ or ‘ T‘
key; by pressing the ‘ ‘ keythe current digit is conſrmed
and the ƀashing is transferred to the following digit.
After conſrming the last digitthe ‘ ‘ key will give access
to the installer parameters.
The initial password is factory set as ‘0000’.
Modifying the Password
In order to modify the stored passwordſrst press the ‘ ‘
keythen proceed as follows:
ENTER T*E CURRENT PASS9OR&.
(same procedure described above)
T*E &ISPLAY S*O9S ‘ P9&N ’.
j
j
PRESS T*E ‘ MENU ’ KEY.
j
T*E &ISPLAY S*O9S ‘ P9&* ’.
j