CO.EL.TE. COEL-SOLAR-WIFI 4Din User manual

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COELTE.NET
COEL-SOLAR-WIFI 4Din
User manual and programming instructions
EQUIPMENT DISPOSAL POLICY BY PRIVATE INDIVIDUALS IN THE TERRITORY OF THE EUROPEAN UNION pursuant to article 13 legislative decree 25 July
2005, n.151 ”Implementing Directives 2002/95/CE,2002/96/CE and 2003/108/EC, on the restriction of the use of certain hazardous substances in electric and
electronic equipment as well as waste disposal”. The crossed-out wheelie-bin symbol ( as required by this directive) on the equipment or
its packaging, indicates that the end user should separate the product from other waste at the end-of- life . The user must deliver the
equipment that has reached the end of its life to the appropriate collection facilities for electronic and electro-technical waste , or return it
to the dealer when purchasing a new equipment of an equivalent type, on a one to one basis. The correct disposal of the equipment
for recycling and treatment will help prevent potential negative consequences for the environment and human health and help the re-
use and/or recycling of the equipment materials .Illegal dumping of the product by the user involves the application of the administrative
sanctions envisaged by current legislation, pursuant to Legislative Decree n. 22/1997 (article 50 and following of the legislative decree
n.22/1997)
Enrollment in the EEE Register n° IT19070000011569.
.
Control unit subjected to functionality check.
We declare that the control unit has been functionally testing
by an authorized person and must be installed by qualified
operators pursuant to the provisions of art. 15 paragraph 9 of
Legislative Decree 209/3. COELTE Ltd declines any
responsibility for the assembly and use of the control unit
according to methods not envisaged by current regulations.
Made by: coelte.net
Manual COELsolar WIFI
Code: 1627SO
Item: 301B-SOLAR WI-FI
THERMAL
SOLAR
ENERGY
CoelApp

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COELTE.NET
The electronic Control unit COELsolar is characterized by a simple design and provides clear and intuitive controls
reading to allow an unprecedented ease of installation and use.
Warning e lights and function activation
Probes connection
The connection of the probes requires attention in identifying the probe marked by the label SOLAR COLLECTOR
PROBE to be connected to terminal 14, corresponding to input S1.
Main functions
Coelsolar WIFI is a device for controlling natural and forced circulation thermal solar systems. The desired program
can be increased from a dedicated menu, and the temperatures measured by the probes can be used and controlled
according to this. The probes data and the control unit main functions can be monitored using the COELAPP
smartphone app which can be downloaded from the Android or iOS stores.
Programs description
Program
Probes
used
Function
Description
1
S1
Suitable for natural circulation
systems
Display of the BOILER temperature and electro-valve output control
2
S1 S2
Suitable for forced circulation
systems
Display of the manifold temperature and differential control of the
circulator output
Display of the BOILER temperature and electro-valve output control
3
S1 S2 S3
Suitable for forced circulation
systems
Display of the manifold temperature and differential control of the
circulator output in relation to probe S2 located in the lower part of the
BOILER
Display of the temperature in the lower part of the BOILER using probe
S2
Display of the temperature in the upper part of the BOILER using probe
S3 and control of the solenoid valve output
Temperature Display
The display of the read temperatures can be Increased by pressing the + or –keys.
A led will lit up corresponding to the Increased probe and the display will show the measured temperature.
User menu
By pressing the menu key it is possible to access the TEV parameter setting menu which corresponds to the Setting
of the intervention temperature of the solenoid valve thermostat for the integration with another DHW generator.
Technical menu
Access to this menu is recommended only for technical personnel as the control unit may not work properly if a
correct programming is not carried out.
Decrease key
LED S2
Indicates that the low probe
temperature of the boiler is being
displayed
LED EV
Indicates activation
state of the
E.Valve
Access key
menù user /
technician
Increase key
LED P1
Indicates pump
intervention
LED S1
Indicates that the
collector probe
temperature is being
displayed
56.
P1 S1 S2 S3 EV
+
-
MENU
Back key, previous
parameter.
WI-FI status feedback
led

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Technical menu can be accessed by holding down the menu key (5 Seconds).
To move between the menu items you must press the menu key to advance or the return key to return to the
previous item.
MENU
DEFAULT
RANGE
FUNCTION
PRG
1
1-3
SELECTION OF THE REQUIRED SYSTEM PROGRAM
TSC
100
100-150
CHANGE THE SAFETY TEMPERATURE AGAINST SOLAR COLLECTOR OVERTEMPERATURE
ISc
15
0-20
COLLECTOR SAFETY HYSTERESIS (TSC NB: ISC = 0 DISABLE COLLECTOR SAFETY
TSb
92
65-150
CHANGE THE VALUE OF THE SAFETY THERMOSTAT AT THE BOILER PROBES S2 S3
ISb
5
5-10
BOILER SAFETY HYSTERESIS (TSb)
DEL
8
2-20
DELTA DIFFERENTIAL PROBE
ITD
4
2-20
CHANGE DIFFERENTIAL THERMOSTAT HYSTERESIS
IST
2
2-20
CHANGE DIFFERENTIAL THERMOSTAT HYSTERESIS INTEGRATION ELECTROVALVE
TST
0
0-10
THE MANUAL OPERATION OF THE PUMP IS ACTIVATED IN MINUTES FOR TEST FUNCTION
TAG
0
0-6
CHANGE THE ANTIFREEZE THERMOSTAT "if Set to 0 the function is disabled”
IAG
3
2-20
HYSTERESIS ANTIFREEZE THERMOSTAT
DAB
7
1-30
ANTI-BLOCK INTERVAL DAYS CIRCULATORS
SAB
25
0-59
ANTI-BLOCK DURATION CIRCULATORS SECONDS
BEP
ON
ENABLING BEEP KEYPAD
EPU
ON
ENABLING PWM CONTROL
SPU
25%
0-100%
MINIMUM SETTING % PWM
CPU
2
1-2
PWM CONTROL CURVE
LED
1
0-1
WI-FI CONNECTION LED INDICATOR
LV2
EE SECOND LEVEL TECHNICAL MENU
RES
OFF
PRESS + KEY 5 TIMES TO TURN IT TO ON, THEN PRESS MENU TO RESET THE CONTROL UNIT
2nd LEVEL TECHNICAL MENU
The second level technical menu is reserved for selecting the type of probe to be used, the types supported are
described in the following table:
TYPES
ID TYPE
DESCRIPTION
READING RANGE
RESOLUTION
NTC 10K
0
SELECT TYPE 0FOR PROBE NTC 10K @25°C K3450
-20 + 250 °C
1 °C
NTC 100K
1
SELECT TYPE 1FOR PROBE NTC 100K OHM @25°C
0 150 °C
1 °C
PT100
2
SELECT TYPE 2FOR PROBE PT100
0 250 °C
4 °C
PT1000
3
SELECT TYPE 3FOR PROBE PT100
0 250 °C
3 °C
To access the Second level menu you must already be in the technical menu, scroll through the various menu items
up to the indication LV2, alternating with this wording the indication “off” also appears. The + key must be pressed 5
times to make the word "on" appear, at this point press "Menu".
The following items will be displayed:
MENU
DEFAULT
RANGE
FUNCTION
So1
0 (10kntc)
0-3
PROBE TYPE SELECTION FOR OUTPUT 1 CLAMP 14
So2
0 (10kntc)
0-3
PROBE TYPE SELECTION FOR OUTPUT 2 CLAMP 15
So3
0 (10kntc)
0-3
PROBE TYPE SELECTION FOR OUTPUT 3 CLAMP 16
Tu1
--
--
TUNING PROBE 1 *
*The Tu1 parameter is useful for fine-tuning any possible degree of inaccuracy in the reading of probe S1.
.
Solenoid valve thermostat output
All programs provide for the possibility of using a relay output with clean contacts to allow connection of a solenoid
valve for integration with other sources of domestic hot water.
In program 1 the control takes place by reading from probe S1, in program 2 the reading takes place from probe S2
and in program 3 it takes place by reading from probe S3.
TEST function of the circulator
It is possible to test the circulator by enabling the desired time in minutes in the technical parameter TS, when the
Set time has elapsed, the circulator will again be controlled by the Increased system program.

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Circulator anti-blocking function.
To avoid circulator blocking due to prolonged inactivity, the control unit has a function based on checking the time
elapsed without starting it . If the circulator does not restart within the days Set in the dab parameter ( 7 days default)
it activates for the Seconds Set in the Sab parameter (anti-blocking Seconds). The function is also active in standby.
If there is a voltage drop, causing the ECU to restart, an anti-lock cycle is carried out because it is not possible to
know how long the power was off.
AGE Antifreeze function
If it is necessary to prevent the heat transfer liquid from reaching temperatures close to freezing, it is possible to
intervene by activating the AGE function (Antifreeze). The function has the task of activating the circulation pump
when the temperature read by probe S1 reaches or is lower than the AGE parameter in the technical menu; the
function can be disabled by setting the AGE parameter to 0.
Factory reset
To reset the control unit to the factory values, it is necessary to reach the RES item in the technical menu, press the
+ key 5 times, the wording ON will appear, at this point press menu. The control unit will display the scrolling wording
"Done" to confirm the operation. Attention: all previously entered data will be cancelled, including wifi association
data.
ALARMS Alarm situations that may occur are the following:
ALARMS
CAUSED BY
Display with scrolling down text
1
PROBE 1 OPEN OR NOT CONNECTED
PROBE 1 OPEN
2
PROBE 2 IN SHORT CIRCUIT
PROBE 1 IN SHORT CIRCUIT
3
PROBE 2 OPEN OR NOT CONNECTED
PROBE 2 OPEN
4
PROBE 2 IN SHORT CIRCUIT
PROBE 2 IN SHORT CIRCUIT
5
PROBE 3 OPEN OR NOT CONNECTED
PROBE 3 OPEN
6
PROBE 3 IN SHORT CIRCUIT
PROBE 3 IN SHORT CIRCUIT
Management of the PWM circulator
The management of the pwm circulator is regulated by 3 technical parameters:
•SP1 minimum PWM value
SP1 Sets the minimum PWM that can be used during control
•EP1=ON When the control activates the circulator, this will start at the PWM value Set by SP1 , in this condition, for
each further degree of increase in the temperature of the collector respect to the tank, there is a PWM increase of
10%.
Ex: SP1=25% DEL=5°C T.BOILER=50°C
T.Collector 54° = circulator =off
T.Collector 55° = circulator =on PWM=25%
T.Collector 56° = circulator =on PWM=35 %
T.Collector 57° = circulator =on PWM=45%
EP1=OFF When the controller activates the circulator, it will always start at the pwm100% value •CP1 Setting of the
operating curve
CP1= 1 the circulator flow rate increases as the signal decreased PWM read on the output terminals, e.g: pwm=0%
circulator at maximum, pwm=100% circulator off. N.B. to be increases only if circulators designed for application on
heating systems are used. •
CP1= 2 (default) the flow rate of the circulator increases with the increase of the PWM signal read on the output
terminals, eg: pwm=100% circulator at maximum, pwm=0% circulator stopped.
NOTE: The calculated PWM value is always forced to 100% for the first 10 Second s of circulator activation.
Installation
Although not complicated, installation requires to be carried out by qualified technical personnel. Remember that the
device requires a 230-volt mains power supply, therefore there is a risk of electric shock.
Considering that for this product it is necessary to connect to the internet, you need to make sure that the installation
point can be reached by an efficient wi-fi signal level.
First make all the electrical connections, then SELECT the required program and intervene on some adjustments in
the technical menu if necessary and after general testing you can connect to the wi-fi network as described in the
dedicated chapter.

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Program 1
TERMINAL
BOARD
NAME
CONNECTIONS
1-2
Line 220 volt
3-4
Non used
5-6-7
Clean contacts integration relais
(Electrovalve)
8-9
Not used
10
Common probe input
10-11
INPUT PROBE 1
10-12
NOT used input
10-13
NOT used input
PARAMETERS
DISPLAY
LED
DESCRIPTION
DEFAULT
RANGE
UNIX
DIS
S1
DISPLAY PROBE 1 TEMPERATURE
1
1-3
°C
TEV
EV
AUXILIARY THERMOSTAT OUTPUT
54
20-90
°C
WORKING PRINCIPLE
IF the condition is true the correspondent output is activated
LOGIC STATE
OUTPUT
IF (S1>=TEv)
EV= on
IF (S1<=TEv-IST)
EV= off
LINE
1 2 3 4 5 6 7 8 9 10 11 12 13
F N P N C Nc Na
PWM GND COM S1 S2 S3
T.EV.
S1
S2
S3
EV
AF
AF
S1
PROGRAM 1

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COELTE.NET
Program 2
TERMINAL
BOARD
NAME
CONNECTIONS
1-2
Line 220 volts
3-4
Circulator power supply output
5-6-7
Integration relay clean contacts (Solenoid valve)
8-9
Pwm signal output
10
Common probes input
10-11
PROBE INPUT 1
10-12
PROBE INPUT 2
10-13
NOT USED INPUT
PARAMETERS
DISPLAY
LED
DESCRIPTION
DEFAULT
RANGE
UNIT
DIS
S1-S2
TEMPERATURE DISPLAY REFERENCE TO INCREASED
PROBE
1
1-3
°C
TEV
EV
THERMOSTAT AUXILIARY OUTPUT
54
20-90
°C
DEL
PROBE DIFFERENTIAL DELTA (TECHNICAL MENU)
2
2-20
°C
TSb
BOILER SAFETY TEMPERATURE (technical menu)
90
65-150
TSC
MANIFOLD SAFETY TEMPERATURE (technical menu)
130
100-150
°C
WORKING PRINCIPLE
IF the condition is true the correspondent output is activated
LOGIC STATE
OUTPUT
IF (S1 >= TSC)
OVERTEMP_S1
IF (S2 >= TSI)
OVERTEMP_S2
IF ((S1 >25) E (S1 >= (S2+DEL) ) E (OVERTEMP_S2=OFF) E (OVERTEMP_S1=OFF)))
P1
IF (S2>=TEv)
EV= on
IF (S2<=TEv-IST)
EV= off
EV
AF
S2
P1
AF
S1
PROGRAM 2
LINE
1 2 3 4 5 6 7 8 9 10 11 12 13
F N P N C Nc Na
PWM GND COM S1 S2 S3
PWM
T.EV.
S1
S2
S3

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COELTE.NET
Program 3
TERMINAL
BOARD
NAME
CONNECTIONS
1-2
Line 220 volts
3-4
Circulator power supply output
5-6-7
Integration relay clean contacts (Solenoid valve
8-9
Pwm signal output
10
Common probes input
10-11
PROBE INPUT 1
10-12
PROBE INPUT 2
10-13
PROBE INPUT 3
PARAMETERS
DISPLAY
LED
DESCRIPTION
DEFAULT
RANGE
UNIT
DIS
S1-S2-S3
TEMPERATURE DISPLAY REFERENCE TO INCREASED
PROBE
1
1-3
°C
TEV
EV
AUXILIARY OUTPUT THERMOSTAT
54
20-90
°C
DEL
PROBE DIFFERENTIAL DELTA (TECHNICAL MENU))
2
2-20
°C
TSb
BOILER SAFETY TEMPERATURE (technical menu)
70
65-150
TSC
MANIFOLD SAFETY TEMPERATURE (technical menu)
130
100-150
°C
WORKING PRINCIPLE
IF the condition is true the correspondent output is activated
LOGIC STATE
OUTPUT
IF (S1 >= TSC)
OVERTEMP_S1
IF (S2 >= TSI)
OVERTEMP_S2
IF ((S1 >25) E (S1 >= (S2+DEL) ) E (OVERTEMP_S2=OFF) E (OVERTEMP_S1=OFF)))
P1
IF (S3>=TEv)
EV= on
IF (S3<=TEv-IST)
EV= off
EV
AF
S2
P1
AF
S1
S3
PROGRAM 3
LINE
1 2 3 4 5 6 7 8 9 10 11 12 13
FN P N C Nc Na
PWM GND COM S1 S2 S3
PWM
T.EV.
S1
S2
S3

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COELTE.NET
WIFI working description
The control unit is equipped with a Wifi communication device thanks to which it is possible to monitor the measured
temperatures and adjust the intervention temperature of the solenoid valve thermostat as desired.
Upon completing the installation of the control unit and the completion of all the functioning tests it is possible to
proceed with the connection operations to the wifi network.
LED connection indicator
The LED menu item is present in the control unit technical menu. This allows you to activate a flash of one or more
LED dots at the base of the display.
Module Status, on the data entered, it is not possible to access the indicated of the router is not active
CONDITIONS
DOT POINT
Description
In Pairing
1.23
Short flashing of the left LED every 2 Second s
Connected
123.
Short flashing of the right LED every 2 Second s
Updating
1.2.3.
Medium duration simultaneous flashing of all three LEDs
Wifi error
123.
Fast flashing of the right LED
LED not enabled
Not available
If the LED technical parameter is Set to =0, the wifi led indicator is disabled
Menu wifi
The control unit has a dedicated menu for the WiFi functions. It is increased by pressing the menu and return keys
together for 5 increased . The following table schematically shows this menu.
MENU WIFI
ITEMS
CHAIN TEXT RESPONSE
MEANING
ACTIONS
WIFI STATE
Connected
Internet connection on
Ap radio
Wifi module ready to be associated with a wifi network
Updating
WIfi module being updated
Starting up
Radio module starting up
Not connected
Not connected or configuration error, go to ERROR WIFI
ERROR WIFI
ERROR
No error
No error p
Wifi not found
Basing on the the data entered, it is not possible to
access the indicated network
Repeat pairing procedure
Wrong parameters
Error in the parameters entered
Repeat pairing procedure
DHCP OFF
Router does not assign IP address
Enable DHCP in the Router
and repeat the pairing
process
DNS Service not responding
Router DNS non active
Check DNS nel Router
Update error
An error occurred during the wifi module update
procedure
Check the home internet
connection and wait for the
problem to be
automatically resolved
NTP not responding
The clock and date update Service is not responding
Wait for the problem to be
resolved automatically
AP busy
Too many pairing connections to the device
Close the App on all mobile
phones in the home and
repeat the pairing
procedure
Cloud not responding
The cloud Service is temporarily unavailable
Wait for the problem to be
resolved automatically
Id num
Technical error code
If the error does not
resolve, switch off the
power correct for 15
increased and try again.
PAIRING ON
The wifi module is ready to be associated with a wifi
network
PAIRING OFF
The wifi module has already has a configuration, which
could also be non-functional.
To prepare the control unit
for a new configuration,
press the + key, a 60-
Second countdown will
start within which it is
necessary to pair with the
smartphone
60 Second countdown
Maximum waiting time for pairing from the App.

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ASSOCIATION WITH COELTE APP
COELAPP is the COELTE application for devices with wifi module from Coelte.
The app is available for free download in the Android and Apple stores.
After installing the app on your smartphone, an empty address book page will be shown.
Before proceeding with the configuration, only if you are using an iPhone, you must deactivate the use of your SIM'
card’s Mobile Data. Check that you are connected to your WiFi network with the SmartPhone (only the 2.4 GHz
networks are allowed).
Press the + icon to add a device.
Then it will be necessary to enter:
• a name for the device (eg: Tavernetta stove), it can be different for all users who
use the app for the same device.) ;
• make sure that your smartphone does not add empty spaces in the text fields,
neither before nor after entering the device name;
• a user code must be the same for all users using the same device;
• make sure that your smartphone does not add empty spaces in the text fields,
neither before nor after entering the users code;
•City weather, enter the name of your country and city to use the local weather
Service;
•Press save
•At this point, when the pop-up appears, click on TO CONFIGURE;
Depending on your device , a message may appear requesting authorization to
access the Coeltewifi network. Permissions must be provided for the various
requests. If the message does not appear and there are problems connecting the
smartphone to the device, check in the mobile Settings menu that the Coeltewifi
App has the necessary authorisations;
At this point a pop-up may appear with a request to activate the geolocation,
then go to the Settings of your mobile phone and activate the geolocation and
then re-launch the pairing procedure;
TYPE the password of your wifi network and press ok making sure that no special
characters are entered in the password;
Another pop-up will appear
then access the technical menu on the control unit and reach the third Pairing item ;
PAIRING ALREADY ACTIVE
if Pairing_on appears, the device is already in pairing mode;
therefore it is possible to press ok on the app;
a pop-up message will follow with request to connect to the “Co.El.TeWiFi” network, accept;
CoelApp
Is the device already been set up or it must be set up ?
Set the decise in pairing mode and
presso Ok to continue

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COELTE.NET
the pairing procedure is complete, press ok on the new message that will appear on the smartphone;
Before being able to use the device with the app, just wait a few minutes for the connections and Services;
necessary for operation to be established and registered;
It is possible to find out the connection status by going back to the WIFI STATUS item in the wifi;
NON ACTIVE PAIRING
While if the device has been previously used, the third item in the WIFI menu will show Pairing off ;
press the + button on the control unit, immediately after a 60-Second countdown will appear; within this
time, press ok on the smartphone;
after a few Seconds of waiting, the message Waiting will appear with a 59-Second countdown timer within
which it will be necessary to press OK on the app;
•as already described above, a pop-up message will follow with a request to connect to the “Co.El.TeWiFi”
network, accept;
• the pairing procedure is complete, press ok on the new message that will appear on the smartphone;
• Before being able to use the device with the app, just wait a few minutes for the connections and Services
necessary for operation to be established and registered;
•It is possible to know the connection status by returning to the WIFI STATUS item of the wifi menu;
ASSOCIATION OF A NEW SMARTPHONE WITH A DEVICE ALREADY CONFIGURED
Install CoelApp on your smartphone, and click on the + icon on the address book page then:
•a name for the device (e.g.: Tavernetta stove), can be different for all users who use the app for the same
device.);
•user code, enter the same user code used in the configuration;
•City weather, enter the name of your country and city to use the local weather Service;
•Press save
•At this point, on the pop-up displayed, click on ALREADY CONFIGURED
•You will be asked to enter the device ID. The id can be copied from another paired device to the app address
book ;
At this point, click on ALREADY CONFIGURED in the pop-up displayed
•You will be asked to enter the device ID. The id can be copied from another paired device to the app
address book
Click OK after entering the id
MQTT set up
Insert device ID

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Screens and CoelApp elements
What is shown on the display is what is shown in the photos below for the three different programs in the
different conditions of the circulator and the hot water solenoid valve