Uniteck UNISOLAR 10.24 User manual

22/02/2013
www.uniteck.fr CO00052
Unisolar 20.24 W
IMPORTANT
Unisolar has an automatic voltage detection. For its correct functioning, please imperatively
follow the fconnection and disconection order below.
In case of non compliance, you may damage your battery as well as your Unisolar charge
controller. This damage is not covered by the warranty.
SOLAR CHARGE CONTROLLER
CONNECTION
SOLAR CHARGE CONTROLLER DISCONNECTION

Battery
+ battery choice

Panel

Electrical
consumer

Electrical
consumer

Panel

Battery
10.24 / 20.24 / 20.24W
EN
UNISOLAR
!

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Dear customers, thank you very much for purchasing one of our Uniteck products. Please read carefully and
thoroughly all the instructions before using the product.
DESCRIPTION
Unisolar is a solar charge controller for autonomous photovoltaic system.
Through its integrated microprocessor, Unisolar regulates the charging current coming from the panel
towards the battery depending on:
- the ambient temperature (temperature sensor integrated)
- the charge level of the battery (IuoU load curve)
- the battery technology (Gel/Liquid/AGM)
With its PWM technology, it ensures an optimal charge quality of your batteries, 12V or 24V. It extends
their lifespan and optimizes the output of your solar installation.
Unisolar is perfectly recharging any lead-acid batteries up to 100%:
- Liquid electrolyte
- Gel-cell (GEL)
- AGM (maintenance free)
Moreover, Unisolar incorporates a 12/24V controlled output avoiding deep discharges of your battery and
preserves their lifespan.
INSTALLATION - FIXING
Unisolar has been designed for an indoor use.
It incorporates an external temperature sensor which adjusts the load voltage according to the ambient
temperature for an optimal load (refer to the protection part for more details). Installing it near the
battery is recommanded.
Fixing the solar charge controller can be made :
-On a solid, stable and dry appropriate flat surface, thanks to 4 screws (not provided)
-Or on a DIN rail : 35mm with its specific bracket (except Unisolar 10.24).
For a complete integration of your solar charge controller in your environment, Unisolar 10.24 and 20.24
give you the possibility to make the wirings via the bulkhead.
Standard wiring
Break the 2 caps of the cover
with a pliers
Cables go out via the 2
orifices of the cover
Close the cover by
pushing from the bottom to
the top

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Bulkhead adapter wiring
To provide the required air circulation for cooling the solar charge controller, let a 5 cm free space
(minimum) all around the product.
Unisolar 10.24 : Wall mounting
5cm
5cm
5cm
5cm
Fix directly the
Unisolar on
your bulkhead,
using 4 screws
(not provided)
83
mm
97 mm
60
mm
18,5
mm
5cm
5cm
5cm
5cm
Break the cap
Cables go through the
bulkhead
Close the cover by
pushing from the bottom to the
top

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128 mm
50
mm
Unisolar 20.24 : Wall mounting
Unisolar 20.24 : Din Rail mounting
Unisolar 20.24W : Wall mounting
Unisolar 20.24W : Din Rail mounting
Fix the wall mounting using 3
screws (not provided)
Clip the Unisolar on its bracket
Clip the Unisolar on its bracket
Clip the bracket on the rail and drag it onto the
rail where you want it to be
Clip the Unisolar on its bracket
Clip the mounting on the rail and drag it
onto the rail where you want it to be
99,5
mm
+
34 mm
17 mm
Fix the
Unisolar directly
on your bulkhead,
using 4 screws
(not provided)





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INSTALLATION –CONTROL BEFORE CONNECTION
Before connection, please consult the following points :
BATTERY
Unisolar has an automatic voltage detection. For its correct functioning, please check :
- the battery voltage is higher than 6V (required voltage for the startup of the solar charge controller)
- For 24V batteries, the voltage cannot be lower than 18V.
For flooded batteries, check the electrolyte level. If necessary, complete before charging.
For coupling, proceed as follows:
IN SERIES IN PARALLEL IN SERIES AND IN PARALLEL
Some pieces of advice
In case of parallel
connection, favour
diagonal wiring for a
standardization of the
charge/discharge
Do not couple
batteries with
different capacities,
different age or
different technologies
Prefer a high-capacity
battery to 2 small
connected in parallel,
for equal capacity
PHOTOVOLTAIC PANEL
Check that the photovoltaic panel power does not exceed the power rating of the solar charge controller.
Do not connect solar panels whose voltage is higher than 50V.
ELECTRICAL CONSUMERS
Before connecting your consumers to the solar charge controller and to prevent the solar charge
controller snapping into overload protection, check that the consumers do not exceed the Unisolar power
rating (Refer to the 12V/24V controlled output part for more details).

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INSTALLATION - CONNECTION
Connect each component to symbols established for this purpose (cables not included).
Please follow the connection order in accordance with the polarities.
In case of non-compliance, your solar charge controller as well as your battery may be damaged.
Connect your battery to the solar charge controller (+ and -)
Battery indicator lights on.
Select your battery technology:
- Press and hold the switch for 5 seconds, the active light flinkers
- Select your battery technology by pressing the switch
Liquid : Open lead/acid liquid battery
Gel : Gel battery
AGM : Lead battery (maintenance-free), AGM…
- To confirm your selection, wait for 5 secondes. The light becomes
fixed again. Unisolar memorises your last setup.
Connect your photovoltaic panel to the solar charge controller (+ and -)
Connect your consumer to the solar charge controller (+ and -)
In case of disconnection, follow the opposite order.
NB : the solar charge controller earth ground is not necessary. If you still want to do an earthing, always
do it on the positive cables.

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12 OR 24 V DC CONTROLLED OUTPUT
The controlled output is controlled by an electronic switch that can switch off or switch on the consumers
of your installation. You can connect DC consumers :
12V or 24V, depending on the battery that is connected, such as a light, a pump, a motor…
The maximum continuous power accepted is :
- 10A for the 10-24 model (either 120W - 12V or 240W - 24V)
- 20A for the 20-24/20-24W models (either 240W - 12V or 480W - 24V)
For starting up, some consumers have a current inrush that can be higher than the indicated rating
power. Unisolar allows those temporary overconsumptions, subject to a limit of :
- 1,5 times the nominal current during 5 secondes
- 1,25 times the nominal current during 60 secondes.
Nevertheless, you can directly connect the consumers to the battery without going through the
connection of the Unisolar, thus use more the battery. However, the overload protections and more
importantly the battery undervoltage will not be ensured. You will have to ensure, by yourself, the
surveillance of the installation thanks to battery status lights and to cut off the consumers if necessary.

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FUNCTIONNING –CONTROL PANEL
PHOTOVOLTAIC PANEL DISPLAY
Steady green :
Photovoltaic panel supplies
electricity
Blinking green :
Batterty in overvoltage
BATTERY CHARGE DISPLAY
Steady green :
Charging
Blinking green :
Battery charged
Steady orange:
Battery discharged
Advice : If you do not use the
controlled output, reduce or
switch off your consumers.
Steady red :
Battery deeply discharged
Advice : If you do not use the
controlled output, imperatively
switch off your consumers until
the light becomes green again.
12V/24V CONTROLLED OUTPUT DISPLAY (ACCORDING TO THE BATTERY)
Red light on :
Active output
Blinking read :
Overconsumption or short
circuit
Off :
Inactive output
Green +Flash
Green
Green + Flash
Green
Orange
Red
Red
Red + Flash

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IUOU CHARGING PROCESS
STEPS OF THE BATTERY CHARGE SYSTEM
Charge is made by 3 steps : Boost, Equalisation, Floating.
Boost (I) :
The charge is in a « full-load state » and Unisolar uses 100%
of the energy coming from the solar panel, until the voltage
reaches the boost or the equalisation voltage. The battery is
then 80% charged.
Equalisation (Uo) :
During 2 hours, Unisolar releases a voltage that is constant
and regulated. More the battery is charged, more the current
decreases (battery nearly full).
nb: This stage does not appear with Gel battery. (refer to the
part : charge curve regulation depending on the battery
technology). Indeed, if this stage is realised to this type of
battery, there might be a risk of explosion.
Floating/
Float charging (U) :
The battery charge is complete. Green light "charge" begins to
blink. Unisolar continues to release a very low current to
offset battery self discharge.
Voltage threshold
Gel
AGM
Liquid
Boost
14,2 V
14,4 V
14,6 V
Equalisation (2H length)
-
14,6V
14,8V
Floating
13,8V
13,8V
13,8V

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CHARGE CURVE REGULATION DEPENDING ON THE BATTERY TECHNOLOGY
To perfectly recharge all lead acid batteries, Unisolar adapts its load curve according to the " battery
technology" previously selected:
"Liquid" Batteries Mode :
Liquid electrolyte batteries require higher loads to avoid any stratification of the electrolyte. Stratification
is a non-homogenous blend of the electrolyte. Acid is concentrated at the bottom and the water at the
top (due to its lower density). This phenomenon leads to freezing risks or oxidation of the plates. To
avoid this, Unisolar makes (in a liquid batteries mode) an equalisation charge that mixes the electrolyte,
which is essential to preserve the lifespan of your battery.
"AGM" Batteries Mode/ "GEL" Batteries Mode:
Waterproof batteries (AGM or GEL) require a precise control of the charge voltage to avoid bleeding
phenomenons. Bleeding is an electrochemical reaction that leads to the release of oxygen and hydrogen
gases inside the battery when the battery voltage reaches a point named "gasification voltage".
This voltage changes according to the type of the batteries (AGM or GEL). Depending on the selected
mode, Unisolar releases a voltage level adapted to the technology of your battery for a recharge up to
100%.
Regulation by external/outside temperature
Chimical characteristics of the battery vary depending on the ambient temperature.
With its external temperature sensor, Unisolar adapts precisely its charge voltage in relation with the
reference temperature of 25°C, of +/- 30mV (+/-60mV - 24V by °C), which avoids overloads and under
loads.
INTEGRATED PROTECTIONS
For a safe use, Unisolar has several protections that preserve the solar charge controller, the battery and
the consumers in output :
-Panel polarity reversal protection,
-Protection against panel short-circuits,
- Protection against reversed current : prevents reversed current towards the solar
panel during the night.
- Battery polarity reversal protection,
- Protection against battery overconsumptions (controlled output),
- Battery overvoltage or under voltage protection (controlled output),
- Protection against deep discharges (controlled output).
- Consumers polarity reversal protection (protects the solar charge controller, not the
consumer),
- Protection against short circuits in output.
- Thermal protection.

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TROUBLESHOOTING, CAUSES, REMEDIES
Error message
Causes
Solution
No light switch on
The solar charge controller
needs the battery voltage to
be higher than 6V to be able
to start when connecting the
battery
Check the battery voltage,
recharge it if necessary.
Battery polarity reversal
Check connections
Battery connection problem
(cables, terminals...)
Defective battery
Replace your battery,
following the disconnection
and connection order (refer
to the installation and
connection part)
Panel light off while sun
is present
Solar panel disconnected, not
properly connected, or short
circuit
Check connections (polarity
and connection)
Normal functionning :
The panel voltage is lower
than the battery voltage or
too low sunshine.
The panel gets its charge
back as soon as the panel
voltage is higher than the
battery voltage.
One or several cells of your
panel are hidden.
Check the cleanliness of your
solar panel and make sure
none of the cells are hidden.
Green +
Flash
Blinking panel light
(green)
Battery overvoltage
Disconnect the solar panel,
then make sure the battery is
not in a overvoltage state or
that the voltage of your
battery coupling does not
exceed the voltage accepted
by the solar charge controller
(12V/24V)
Orange
Orange charge light
Battery discharged
Usual charge, light goes
green as soon as the battery
is charged.

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Error message
Causes
Solution
Red
Red charge light.
Consumers are cut
(12/24V light off).
Battery deeply discharged.
Usual behaviour,
Light goes green as soon as
the battery is charged.
Red + Flash
12V output light :
Blinking red
Solar charge
controller in a
protection state,
cut the 12V/24V
output.
Overconsumption.
The whole consumer
consumption exceeds the
rating power of the solar
charge controller.
Reduce consumers. (refer to
the controlled output part)
Then restart the 12V output.
Consumers will be supplied
within 3 seconds.
Short circuit output
Check connections.
In case of 1st short circuit,
solar charge controller will
automatically recharge
consumers within 10
seconds.
In case of 2nd short circuit,
you need to restart the 12V
output by pushing the
switch. Consumers will be
recharged within 3 seconds.
Battery lights :
- AGM,
- Gel
- Liquid
Blinking
simultaneously
Thermal protection : internal
solar charge controller
temperature exceeds 85°C.
Solar charge controller in a
protection state. Charge and
consumers are cut
Wait the end of the cooling-
off period (<75°C)
Control the source of the
overheating (mounting
location, other heat sources).
Provide an adequate
ventilation to the solar
charge controller
As soon as the solar charge
controller gets back to its
normal functionning
temperature, it will restart
automatically.

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WARNINGS AND PIECES OF ADVICE
Unisolar is designed to be exclusively used with photovoltaic systems and lead acid batteries with
liquid electrolyte, gel cell (Gel), sealed AGM types.
Do not attent under any circumstances to charge other batteries than acid-lead batteries (non-
rechargeable batteries for example).
Use Unisolar in a well ventilated area, sheltered from rain, humidity, dust and condensation.
Follow manufacturer’s instructions and safety procedures of the battery. In case of doubt, consult
your retailer or installer.
Batteries can produce flammable gas. Avoid flames, sparks.
During battery maintenance (except GEL), there is a risk of acid leaks so protect yourself.
Never short circuit + and - of the battery or cables : risk of explosion or fire.
Maintenance: check the wiring and all connections at least once a year.
All tasks must be realised in compliance with the country regulations in force regarding electricity.
This device is not designed to be used by people (including children) whose physical, sensory or
mental abilities are reduced, nor by people lacking of experience or knowledge unless they have
benefited of supervision or prior instructions concerning the use of the device given by a person
responsible for their safety.
Please keep an eye on children to ensure that they do not play with the device.
PICTOGRAMS
Device conform to applicable
European Union directives
For indoor use, do not expose to the rain
Caution ! Before using, read the
instruction manual utilisation
Caution explosive gases, avoid sparking and
naked flames.
Product under selective
collection- Do not throw it in a
household waste.
Choose a sheltered local with adequate
ventilation or especially equipped.
IP44
(10-24
/20-24)
Protected against foreign bodies
larger than 1 mm and against
splash water from all directions.
IP23
(20-
24W)
Protected against foreign bodies larger
than 12 m and against rain striking at angles
up to 60° from vertical.

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TECHNICAL SPECIFICATIONS
Unisolar
10/24
Unisolar
20/24
Unisolar
20/24W
SYSTEM
Battery voltage
12V (6 - 2V elements)
24V (12 - 2V elements)
Nominal charging current
10A
20A
20A
Compatible panel
- maximum output power
- maximum voltage
240W
50V
480W
50V
480W
50V
Technology
PWM
PWM
PWM
Self consumption
4 mA
4 mA
4 mA
Protection rating
IP44
IP44
IP23
Maximum cable section
6 mm²
10 mm²
10 mm²
SOLAR CHARGE CONTROLLER
Voltage selection (12/24V)
Automatic detection
Battery type selection
Yes
Yes
Yes
Recommanded battery capacity
10 to 150Ah
10 to 300 Ah
10 to 300 Ah
Temperature Compensation
Yes
-30mV /°C - 12V (25°C ref)
-60mV /°C - 24V (25°C ref)
Panel overvoltage protection
16V/32V
Charging : 15,5V /30V
Reconnection : 15V/30V
OUTPUT SOLAR CHARGE CONTROLLER
Number of outputs
1
1
1
Output switch
Yes
Yes
Yes
Overconsumption protection
Yes
Yes
Yes
Low battery protection
Yes
Yes
Yes
MECHANICAL CHARACTERISTICS
Dimensions apart from DIN Rail (LxHxW)
120x110x42
127x150x55
142x86x53
Weight
200g
350g
500g
Mounting for DIN Rail
No
Yes
Yes
Functionning temperature
-35°C > +55°C
-35°C > +55°C
-35°C > +55°C
Storage temperature
-35°C > +80°C
-35°C > +80°C
-35°C > +80°C
UNDER LOAD DISCONNECTION
Low voltage warning
12V/24V
12V/24V
12V/24V
Consumer disconnection
11,1V/22,2V
11,1V/22,2V
11,1V/22,2V
Consumer resetting
12,6V/25,2V
12,6V/25,2V
12,6V/25,2V

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COMPLIANCE STATEMENT
UNITECK testifies that the solar charge controllers described in this manual :
UNISOLAR 10.24 / 20.24 /20.24W are manufactured in compliance with the following European
directives :
- Low voltage directive : 2006/95/CE from the 12/12/06.
- EMC directive : 2004/108/CE from the 15/12/2004- 03/05/1989.
It complies to the harmonised standards :
- EN 60335-2-29 & EN 55014-1 / EN 55014-2 –EN61000-3-2 - EN61000-3-3 –EN62233
CE date of tagging : january 2013.
01/01/2013 Yoann Fourmond
Société Uniteck Général Manager
132 rue Pierre Simon Marquis de Laplace
34500 Béziers
WARRANTY
The warranty covers any defect, manufacturing flaws for 1 year from the date of its purchase
(pieces and workforce).
Warranty does not cover :
- normal wear of parts (Ex. : cables, etc.).
- panel-module/battery voltage errors, incidents due to inappropriate uses, fall, disassembly or any
damages due to transport.
In case of failure, return the device to your distributor by attaching :
- the dated proof of purchase (receipt, bill…)
- explanatory note of the failure
Caution : Our after-sales service does not accept postage due returns.
After the warranty, our after-sales service ensures repairs after acceptance of a quotation.
After-sales service contact :
Uniteck-132 rue Pierre Simon Marquis de Laplace
34500 Béziers -France
E-mail: [e-mail]
Fax: [phone]

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FRONT DEVICE - QUICK START

External temperature sensor

Command button/switch :
- On/Off 12V/24V controlled output :
push 1 second
- Battery selection : push 5 secondes
- then selection 1 sec.

Solar energy (photovoltaic panel):
- Steady light, panel does supply current
- Blinking light, panel overvoltage

Solar panel connection (Voc<50V)

Battery status :
- Blinking green : Full battery
- Green : charging
- Red : battery deeply discharged

Battery connection (12V ou 24V)

Battery selection :
- AGM : sealed lead-acid battery, maintenance-free,
VRLA..
- Gel: Gel cell battery
- Liquid : liquid electrolyte battery (with plug)

12 or 24V controlled output
connection depending on the
connected battery

Controlled output light:
- On : light switches on
- Off : light off
SOLAR CHARGE CONTROLLER CONNECTION
SOLAR CHARGE CONTRÔLE DISCONNECTION

Battery
+ battery selection

Panel

Consumers

Consumers

Panel

Battery
BRANCHEMENT








