SST EcoSmart 25 User manual

TECHNICAL CERTIFICATE
Thermostat
EcoSmart 25

2
CONTENTS:
Introduction ..................................................... 3
Special features .................................................. 4
Wi-Fi connection guidelines ..................................... 5
Controls and display.............................................. 7
The main indication window of the thermostat .................. 8
Control buttons locking/unlocking .............................. 9
Factory settings reset ........................................... 10
The EcoSmart 25 thermostat installation manual .................. 10
Scope of delivery ............................................... 10
Installation and connection..................................... 11
Floor temperature sensor installation ........................... 12
Thermostat installation ......................................... 14
Mounting the thermostat ....................................... 16
Assembling the device.......................................... 17
Technical data .................................................... 18
Transportation and storage........................................ 20
Safety measures .................................................. 20
Guarantee obligations ............................................ 21
Guarantee card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
ATTENTION!
Please read this manual carefully before starting the installation

3
INTRODUCTION
The EcoSmart 25 thermostat is designed to control electrical heating
systems of premises. The thermostat maintains a comfortable temper-
ature of the heated surface and provides efficient energy consump-
tion. The thermostat provides control using two temperature sensors:
floor sensor and air sensor, both simultaneously and separately (in-
cluded in the scope of delivery).
The thermostat can control waterheated floors when using a normally
closed thermal head with 230 V control voltage (see Figure 5 on page 15).
Remote control of heating is available from a smartphone with the
SST Cloud App installed, using a home Wi-Fi router.
The device is installed in the wall next to the heating cable instal-
lation wires (see the "Floor temperature sensor installation" section
on page12).
It is allowed to install the thermostat instead of the used thermostats
of other series and manufacturers.

4
SPECIAL FEATURES
The EcoSmart 25 thermostat allows you to control the floor heating
directly via the device touch screen or SST Cloud App installed on
your smartphone.
To connect the thermostat to your smartphone, use a Wi-Fi network.
— The supported Wi-Fi network standards are: IEEE 802.11. b/g/n 2.4 GHz.
— The smartphone OS requirements: ANDROID 5.1.0, iOS 10.0.
Download free SST Cloud Aapp for your smartphone or tablet from
the corresponding store. You can also get a link to this program on the
website teploluxe.ru or via QR code provided below:
To learn more about the features of the SST Cloud App, visit sstcloud.ru.

5
WIFI CONNECTION GUIDELINES
— Wi-Fi standards supported by the thermostat:
IEEE 802.11. b/g/n 2.4 GHz.
— Minimum Wi-Fi signal level at the place of the thermostat
installation: -70 dBm.
— Position the Wi-Fi router's antennas according to the
manufacturer's recommendations in order to maximize the Wi-Fi
signal level at the location where the thermostat is installed.
— The number of thermostats connected to your home network at
the same time depends on the type of router you are using.
— If the Wi-Fi signal level of your home network exceeds the radio
interference level by no more than 20 dBm at the location where
the thermostat is installed, we recommend changing the Wi-Fi
channel to a less busy one, eliminating the source of interference,
changing the router position, using remote directional Wi-Fi
antennas, and equipment for extending the radio coverage area
(access points and repeaters).
— When installing thermostats in large area premises, those of
complicated configuration, or if there are problems with
configuring Wi-Fi connection, we recommend to contact
aspecialist for configuring Wi-Fi equipment.

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To set up and operate the EcoSmart 25 thermostat, download its
operating manual on your smartphone.
IMPORTANT!
You can check the Wi-Fi signal level and busy Wi-Fi channels using the Wi-Fi
Analyzer App for smartphone placing your smartphone at the thermostat
installation location. If the signal level is less than required, change the router's
position or use equipment to increase the coverage area of the Wi-Fi network
(access point, repeater, etc.).
Wi-Fi signal propagation is affected by reinforced concrete floors, metal objects
(cabinets, boxes, mirrors, etc.), as well as sources of radio interference (for
example, microwave ovens). The source of radio interference can also be Wi-Fi
access points installed in neighboring rooms.
Since the thermostat is flush mounted in the wall, the Wi-Fi signal level received
by the device can be lower than that shown by the smartphone.

7
CONTROLS AND DISPLAY
To display information and control operating modes, the thermostat uses
an LCD touch display with functional control buttons applied to it.
To set up and control the device, the control buttons are used
1. “<” — to decrease the temperature following value;
2
3
1
Figure 1
2. “O”— to switch the device ON/OFF, to unlock it;
3. “>” — to increase the temperature value.

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1. Set temperature
2. Program mode
3. Constant mode
4. Date/time
5. AP mode
6. STA mode
7. SC mode
8. Indication of heating switch on
9. Screen lock is on
10. Used sensor floor air
The main indication window of the thermostat
There are two main display modes of the device:
— current time indication (Figure 2a);
— current floor and air temperature indication (Figure 2b).
Switching between the display modes occurs automatically every
3 seconds.
The set temperature is displayed in large figures.
The other displayed items:

9
Figure 2. The main indication window of the device
Control buttons locking/unlocking
To unlock the buttons, hold the ON/OFF button for more than 3sec-
onds. When the buttons become unlocked, the device's backlight
turns on. For the first three seconds, the touch buttons are calibrated,
and then you can modify the device settings.
The buttons lock automatically 40 seconds after the last press.
You can force the lock by holding the power button for longer than 1,
but less than 3 seconds.
To turn OFF the device, press and hold the power button for more
than 3 seconds. When you click it, a countdown will appear. When it
is finished, the device will turn off.
2
3
5
47
6
8
9
10
1

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THE ECOSMART 25 THERMOSTAT INSTALLATION
MANUAL
Scope of delivery
1. EcoSmart 25 Thermostat
2. Floor temperature sensor with the installation wire (2 m±10%)
3. Technical certificate
4. Packing box
Factory settings reset
The EcoSmart 25 thermostat can be reset to the factory settings if
necessary. In this case, information about connected Wi-Fi networks
will be erased from the device memory heating, schedules and
temperature settings will be returned to the factory settings:
28 °C – the comfort temperature, 12 °C – the energy saving and freeze
prevention temperature. Also the constant temperature maintenance
mode will be set, with the control by the floor temperature sensor (28
°С) and the limitation by the air temperature sensor (35 °С); and the
self-learning feature will be enabled.
To reset the factory settings, remove the lock by pressing and holding
the “<”and “>” buttons for more than 3 seconds. After that, the display
of flashing zeros will appear on the thermostat screen and the device
will return to factory settings. Turn it ON by pressing the central button.

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Refer to the "Installation and connection" section of this Manual for the
connection diagram and installation guidelines.
We recommend to use the services of qualified specialists when installing the
thermostat and heating system. The electrical connection and connection to the
mains must be performed by a professional electrician.
The installation instructions and wiring diagram do not replace the professional
skill of the device installer.
The manufacturer's guarantee does not cover any product defects caused by
mechanical damage, improper installation, or operation for purposes or under
conditions not provided by the installation and operation instrustions.
IMPORTANT!
Installation and connection
Tools and materials required:
1. Corrugated plastic tube min 16 mm in diameter (the length
depends on the thermostat mounting location)
2. Standard plastic mounting box
3. External terminal connector for the earthing line connection
4. Slot screwdriver
5. Mains phase indicator

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Floor temperature sensor installation
The floor temperature sensor should be placed in a corrugated plastic
tube near its end. This end of the tube must be sealed to prevent
penetration of tile fixing solution or cement mortar during the
installation of warm floors.
The corrugated tube containing temperature sensor must be located
at the same level as the heating cable inbetween two neighbouring
passes of this cable (Figure 3). At that you can select the parameters
of the operating temperature sensors from the list provided in the
SST Cloud App.
Place the tube in preliminarily prepared grove (chase) in the floor and
lead its other end to the place chosen for the thermostat or junction
box location. Cut the excessive tube and the sensor installation wire
to a proper length.
Disconnect your local wiring from the mains before connecting the thermostat
or disconnecting it to check or replace it. Electrical connections of the device
and its connection to the mains must be performed by a qualified electrician.
IMPORTANT!

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Figure 3
50-60 cm
The floor temperature sensor is installed when you perform your heating
element (mat, cable section or film) installation.
The thermostat is installed at the end of the warm floor system installation.
IMPORTANT!

14
Thermostat installation
Preparation of electrical connections
Install the mounting box or the intermediate junction box (if you plan
to use it).
Lead power supply cable, installation wires of the warm floor heating
elements, temperature sensor installation wire to the box.
Energize the supply cable and find the phase wire and the neutral wire
using the mains phase indicator; mark these wires. De-edergize the
supply cable.
Connect all required wires to the thermostat using its terminals with
screw fastening.
The temperature sensor is connected to terminals 1 and 2 (polarity does
not matter). The supply voltage (230 VAC) is applied to terminal 5 and
6, at that the phase wire (detected by the indicator) – to terminal 6, and
the neutral wire – to terminal 5.
The heating element installation wires are to be connected to terminals
3 and 4; the screening braid output (yellow-green wire) – to the
protective earthing (PE) line via the external terminal contact (not
included in the scope of delivery) (Figure 4).

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Figure 5
Connection diagram of the thermostatic head to the thermostat to
control water heating systems.
Figure4
Protective
earthing line (PE)
External
terminal
connector
N L
230 VAC
Temperature
sensor
Single-core heating cable/mat
Protective
earthing line (PE)
External
terminal
connector
N L
230 VAC
T
emperature
sensor
Single-core heating cable/mat
Temperature
sensor
N L
230 VAC

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Mounting the thermostat
Disassemble the device.
1. Remove the front cover. For that, carefully press in turn, by thin slot
screwdriver, the latches located on the lower side of the front cover,
pulling it slightly out (Figure 6a).
2. Take off the cover (Figure 6b).
3. Place the rear part of the device into the mounting box and fasten by
means of at least two screws.
Figure 6a
To assemble the device, it is required to align the arrows on the power supply
part with those on the control part of the unit and install the control part
pushing it up to fixation.

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Assembling the device
Install the front cover carefully on the upper latches of the rear part
of the device and press the cover at an angle up to the click of all
latches. Make sure that the front cover tightly adjoins the rear part of
the thermostat installed in the mounting box.
Figure 6b
To disassemble the device, carefully press in turn, by thin slot screwdriver, the
latches located at the angles and pull the control part out.
A(2:1)
À
A(2:1)
À
A(2:1)
À
A(2:1)
À

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TECHNICAL DATA
Supply voltage 230 VAC
Maximum load current 16 A (3.5 kW)
Power consumption 450 mW
Weight 120 gr
Dimensions 80×80×44 mm
Ingress protection rating IP31
Protection class II
Floor temperature sensor, included in the scope
of delivery (TST02)
NTC 6.8 kOhm
Sensor installation wire length 2 m ± 10%
Permissible ambient air temperature from +5 °C to +40 °C
Permissible relative air humidity 80 %
Temperature control range from +5 °C to +45 °C
Service life Min 5 years
Wi-fi network standards supported
IEEE 802.11. b/g/n
2.4 GHz
Retention time of heating control parameters Not limited

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“Open window detection” feature Yes
Clock time settings retention time
4 hours (automatically
synchronized when
accessing cloud)
Floor temperature sensor nominal resistance
supported (can be selected in the SST Cloud
App)
Atlantic NEVADA
6.8 kOhm
Aube 10 kOhm
Warmup 12 kOhm
Devi 15 kOhm
Eberle 33 kOhm
Ensto 47 kOhm

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TRANSPORTATION AND STORAGE
It is allowed to transport the thermostat by all transport means in
accordance with the rules of transportation operating for the particu-
lar means of transport used.
SAFETY MEASURES
The thermostat conforms to the requirements of the Technical
Regulations
EN 60730-1: 2016
EN 55014-1: 2017
EN 61000-3-2: 2014
EN 61000-3-3: 2013
EN 55014-2: 2015.
The power connection of the thermostat must be performed by
a qualified electrician. All the installation and connection works with
the units must be performed with the power supply disconnected.