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

11
Pressing the ‘ esc ’ key at any time will exit the password
management mode.
Using installer parameters
Inserting the correct Password gives access to the installer
parameters change mode (‘ SET ’ icon lights). The ſrst
information displayed is the model of the control unit in use
and the parameter ‘ P1 ’ value.
$y pressing the ‘ S‘ or ‘ T‘ keys it is possible to scroll
through the various parameters. Pressing the ‘ ‘ key takes
the user to the parameter modifying mode selected.
WARNING!
In the ‘ installer parameters ‘ mode all the outputs are
disabled.
All default values are to be considered as indicative,
being they subject to changes due to the version and
without prior notice.
To exit the installer mode press the ‘ esc ’ k e y o r w a i t
2seconds.
INSERT T*E NE9PASS9OR&.
T*E &ISPLAY S*O9S ‘ P9&C ‘.
j
j
INSERT NE9PASS9OR&.
j
T*E CONTROL UNIT 9ILL MEMORI<E T*E NE9PASS9OR&
AN&)I8E ACCESS TO T*E INSTALLER PARAMETERS.
j
INSERT T*E CURRENT PASS9OR&.
PRESS T*E ‘ ‘ KEY ON T*E START PA)E.
j
T*E &ISPLAY S*O9S ‘ P9&  ‘.
j
T*E &ISPLAY S*O9S T*E FIRST
‘ INSTALLER PARAMETER ’.
j

12
j
WARNING!
Parameter P12 ‘ %FS ‘ is available only for the controller
with 2 SPST relay outputs + 2 semiconductor relay
outputs (variable collector pump speed).
Therefore P12 parameter ‘ MTL ‘ (minimum collector
temperature limitation) will be shown with P13 only
for version with variable collector pump speed, while it
will be shown with P12 for all the other versions.
USIN)T*E ARRO9S ‘ S‘ or ‘ T‘ IT IS POSSI$LE TO
CYCLICALLY SCROLL T*ROU)* T*E INSTALLATION
PARAMETERS:
P1: SELECTION INSTALLATION TYPE ‘ SC*’
P2: SETTIN)T*ERMAL &ATA ‘ &ATA ’
P3: ANTIFROST PARAMETERS MANA)EMENT ‘ O AF ’
P4: ACOUSTIC SI)NAL MANA)EMENT ‘ $EEP ’
P5: LO)IC RELAY SELECTION ‘ ACT ’
P6: INTE)RATION *OURS COUNTER ‘ C A*’
P7: LOA&S 9IRIN)TEST ‘ TEST ’
P8: CALCULATION OF T*E ENER)Y PRO&UCE&‘ SEM ‘
P9: RECOOLIN)FUNCTION ‘ REF ‘
P10: PERIO&IC ACTI8ATION OF LOA&S ‘ P8K ‘
P11: MEASUREMENT UNIT ‘ UNIT ‘
P12: SETTIN)OF COLLECTOR PUMP SPEE&‘ FS ‘
P13:LIMITATION OF COLLECTOR MINIMUM TEMP. ‘ MTL ‘
PRESS T*E ‘ ‘ KEY TO MO&IFY T*E
SELECTED PARAMETER.
j
PRESS T*E ‘ esc ’ KEY TO RETURN TO T*E INSTALLER
PARAMETERS SELECTION.
j
9AIT 2SECONDS OR PRESS T*E ‘ esc ’ KEY TO EXIT
T*E INSTALLER MODE.
CONFI)URE DATA FOR E8ERY SIN)LE PARAMETER AS
EXPLAINED $ELO9.
j

13
WARNING!
When going into parameter P1, the controller will reset
the maximum temperatures (MT) detected until that
moment. Furthermore, when quitting this parameter,
the controller will set again the temperature display
on the sensor S_1.
The thermal parameters to be set are displayed when
the relevant scheme is selected, this means the power
unit will only display the thermal parameters actually
activated for the selected hydraulic scheme.
P1: SELECT INSTALLATION TYPE
Pressing the ‘ S‘ or ‘ T‘ keys will show all the installations
that can be set up (if the probe for the selected installation
has a problem or is left unconnectedthat probe will ƀash on
the display). To conſrm the selected installation press the ‘ 
‘ key; the control unit will memorize the choice and the display
will again show the parameter list.
To cancel the selectionpress the ‘ esc ’ key. In this case the
control unit will abandon the changes made and will show
again the parameter list.
The parameters inƀuencing the regulation of the selected
setup are listed in the following and can be modiſed through
the second installer parameter (P2).
List of thermal data to be eventually programmed
PARAMETERS DESCRIPTION
TS1-TS2-TS3-TS4 Probe safety temperature
ţT 12 Differential between the probes S1-S2
ţT 13 Differential between the probes S1-S3
ţT 14 Differential between the probes S1-S4
ţT 34 Differential between the probes S3-S4
ţT 42 Differential between the probes S4-S2
ţT 43 Differential between the probes S4-S3
MTC Adjustment of collector minimum
temperature
MTEN Enabling/disabling the collector minimum
temperature
TM2 Maximum temperature of the probe S2
TM3 Maximum temperature of the probe S3
TM4 Maximum temperature of the probe S4
TAH Integration temperature on the probe S3
HY12 *ysteresis of ţT 12
HY13 *ysteresis of ţT 13
HY14 *ysteresis of ţT 14
HY34 *ysteresis of ţT 34
HY42 *ysteresis of ţT 42
HY43 *ysteresis of ţT 43
HYT Thermostatic hysteresis
HYTS Safety thermostatic hysteresis

14
AVAILABLE DIAGRAMS
SCH 01
Solar heating installation with 1 tank and no integrative
heat source.
Control logic
WARNING: The following control logics must be applied
to all the diagram described hereinafter.
CONTROL LOGIC
CONTROL LOGIC IN MANUAL MODE OR IN ABC
ABC
MANUALE
T/ABC
/10
MANUAL IN PARALLEL TO T*E ţT CONTROL
The control logic concerning the commands of the ‘A$C’ function
or the ‘ MANUAL ‘ operation mode takes the place of the
differential gear control. The controls concerning the Safety and
Maximum temperatures are always active. The integrative source
in Manual mode or in A$C is deactivated. It will be automatically
reactivated when the above modes are deactivated.
CONTROL LOGIC OF THE SAFETY THERMOSTATS
The control is not active when the unit is in ‘ OFF ‘ status.
ALR RELAY
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?

15
SCH 03
Pool solar heating installation.
Control logic
SCH 02
Solar heating installation with 1 tank and additional
thermostatic heating.
Control logic
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?

1
SCH 05
Natural circulation solar heating installation with 1
tank and direct integration by means of valve logic.
Control logic
SCH 04
Solar heating installation with 1 tank, direct integration
by means of valve logic.
Control logic
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?

1
SCH 07
Solar heating installation with 2 tanks, logic valve
control, and integrative heat source.
Control logic
SCH 06
Solar heating installation with 2 tanks, valve logic
control and no integrative heat source.
Control logic
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?

1
SCH 09
Solar heating installation with 1 tank, valve logic
control and heat exchanger for pool heating.
Control logic
SCH 08
Solar heating installation with 2 tanks, valve logic
control, no integrative heat source.
Control logic
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?

1
SCH 11
Solar heating installation with 1 tank and additional
heat source with solid fuel.
Control logic
SCH 10
Solar heating installation with 2 tanks, sanitary regulation
with thermal exchange and integrative heat source.
Control logic
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?

2
SCH 13
Solar heating installation with 2 tanks, pump logic.
Control logic
SCH 12
Solar heating installation with 1 tank plus one
integrative and one solid fuel heat sources.
Control logic
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?
WARNING!
All outputs are 230V~ powered and are NOT potential free.
?