SST LumiSmart 25 User manual

TECHNICAL CERTIFICATE
Thermostat
LumiSmart 25

2
CONTENTS:
Introduction ..................................................... 3
Controls and display ............................................. 4
Maintenance temperature control .............................. 5
The LumiSmart 25 thermostat installation manual ..................... 6
Scope of delivery ............................................... 6
Installation and connection..................................... 6
Floor temperature sensor installation ........................... 8
Thermostat installation ......................................... 8
Mounting the thermostat ....................................... 11
Assembling the device.......................................... 12
Technical data .................................................... 13
Transportation and storage........................................ 14
Safety measures .................................................. 14
Guarantee obligations ............................................ 15
Guarantee card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ATTENTION!
Please read this manual carefully before starting the installation

3
INTRODUCTION
The LumiSmart 25 thermostat is designed to control electrical heat-
ing systems of premises. The thermostat maintains a comfortable
temperature of the heated surface and provides efficient energy
consumption. The thermostat provides heating control using one of
two temperature sensors: the floor sensor (included in the scope of
delivery) and the built-in air sensor which is used when the floor sen-
sor is not connected.
The thermostat can control water heated floors when using a normally
closed thermal head with 230 V control voltage (see Figure 5 on page 11).
The device is installed in the wall next to the heating cable installation
wires (see the "Floor temperature sensor installation" section on page 8).

4
CONTROLS AND DISPLAY
"ON" button and adjustment ring are used for thermostat regulation.
1. The "ON" Button
2. The temperature scale
3. The adjustment ring
2
3
1
Figure 1

5
Maintenance temperature control
To control the maintenance temperature, use the adjustment ring to
set the desired temperature. The thermostat will keep it by turning
OFF the heating when overheating by 1 degree is detected and turning
it ON when the temperature drops by 1 degree below the set value.
Heating is ON when
floor temperature
sensor is used
Heating is ON when
air temperature
sensor is used
Heating is OFF Open window
feature is enabled
Error is detected

6
THE LUMISMART 25 THERMOSTAT INSTALLATION
MANUAL
Scope of delivery
1. LumiSmart 25 Thermostat
2. Floor temperature sensor with the installation wire (2 m±10%)
3. Technical certificate
4. Packing box
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

7
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 instructions.
IMPORTANT!
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!

8
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 warm
floor installation.
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.
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.
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!

9
Figure 3
50-60 cm
Energize the supply cable and find the phase wire and the neutral wire
using the mains phase indicator; mark these wires. De-energize 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 termi-
nal 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 connected to terminals 3
and 4; the screening braid output (yellow-green wire) – to the protec-

10
T
emperature
sensor
N L
230 VAC
Figure 5
Connection diagram of the thermostatic head to the thermostat to
control water heating systems.
Figure 4
Protective
earthing line (PE)
External
terminal
connector
N L
230 VAC
T
emperature
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
tive earthing (PE) line via the external terminal contact (not included
in the scope of delivery) (Figure 4).

11
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

12
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.
À
A(2:1)
À
A(2:1)
À
A(2:1)
À
A(2:1)

13
TECHNICAL DATA
Supply voltage 230 VAC
Maximum load current 16 A (3.5 kW)
Power consumption 450 mW
Weight 130 gr
Dimensions 80×80×57 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
“Open window detection” feature Yes

14
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.

15
GUARANTEE OBLIGATIONS
The manufacturer guarantees that the quality of the thermostat meets
the requirements of Technical Specifications provided that transpor-
tation rules as well as installation and operation guidelines are
observed.
Guarantee period – 3 years from the date of sale.
During the guarantee period, the buyer has the right for repair or
replacement of the unit when detecting failures occurred through the
manufacturer’s fault and if the recommendations for installation and
operation are followed.
Claims
If faults occur during the guarantee period of the device, the buyer
must immediately contact the manufacturer's service center or its
authorized regional representative.
The Service Center: [phone], [e-mail]
141008, Russia, Moscow region, Mytischi,
Proektiruemyj proezd 5274, Bldg. 7.
Addresses and phone numbers of service centers in other regions
are specified on the website www.sst-iwarm.com

16
Passed for printing on 25.05.2020
The manufacturer: Zavod SST TP LLC
Russia 141008 Mytischy, Moscow region,
Proektiruemyj proezd 5274, Bldg. 7
Tel./fax: [phone]; e-mail: [email protected];
www.sst-iwarm.com
The thermostat LumiSmart 25,
date of manufacture ,
has passed factory tests and is certified as ready for operation
QCD stamp here
Date of sale
Seller’s stamp here