Electric Under Floor Heating-Thermostat Manual
Important: Manufacturer's guarantee does not cover device’s malfunctions caused by mechanical damage, improper installation, or exploitation for purposes or under conditions not provided by the User and Installation Manual. Keep in mind please that Installation Manual and Connection Diagram does not replace the services of a competent installer. We recommend that you use the services of professional people for thermostat and electric under floor heating system installation. Ask a qualified electrician to perform all connections and power net working of the device. Switch off power before connecting the wiring to the thermostat or disconnecting for testing of the device.
Introduction
Thank you for choosing I•WARM 720 thermostat, the new intellectual electric under floor heating control system. With this product you will see how easy it is to maintain your comfort at a lower cost; it will take care of keeping your home warm and cozy all the time. Designed with innovation and inspiration the new thermostat is highly reliable, and easy to set and use. This unit allows programming in half hour time periods over a seven day period providing maximum operating choice.
Please study this manual carefully before you install the device!
Functional description
The I•WARM 720 is designed for control of electrical underfloor heating systems (heating mats or cable units) or other electrical indoor heating systems. It maintains automatically a specified temperature exactly when you need it.
There is no need to think about your heating management.
You will never have to remember to turn it on. You only need to set the time when you need it, and I•WARM 720 will turn it on for you in advance so that the required temperature will be achieved by the time you specify. The I•WARM 720 is an intellectual and self developed system, its operation is based on its particular experience of heating your house, so it strives to execute your commands more and more precisely and efficiently every time.
The thermostat is equipped by large screen LCD with extended indication that makes using of the device mighty easy. Under the display are located 3 multifunctional control buttons; at that help string appearing in bottom part of the display indicates current function of the buttons. The LCD is provided by highlighting which appears on at pressing of any button and turns off automatically after 40 seconds after last button is pressed.
The I•WARM 720 controls the temperature based upon data received from floor temperature sensor (included in the package). The device displays two temperatures — actual floor temperature and «set by you» temperature.
The display also shows the maintenance mode (continuous, daily or weekly schedule). In bottom string the current day and time are displayed.
The device has self diagnostics, and will display any warning messages. You can limit the maximum temperature of the floor, the device will also show energy saving statistics for any one given time in the form of a percentage figure.
Start up of heating system control
The thermostat can be turned on after wiring connections are complete and tested.
Important: Do not turn new built electric under floor heating system on before the end of the period recommended by the manufacturer of adhesives or compound layers.
Earlier heating system turn on can lead to damage of floor decorative coverings and heating mats or cable units. If in any doubt contact adhesive manufacturer or electric under floor heating system manufacturer.
To turn I•WARM 720 ON/OFF press the middle button and keep it pressed for at least three seconds. Turning ON/OFF is accompanied by appropriate animation on the display.
After I•WARM 720 is turned on the basic indication appears on the highlighted display (fig. 1)
The larger numbers indicate the actual floor temperature, the figures in the upper left corner show the floor temperature to be maintained (the «comfort» temperature), the sign in upper right corner indicates the continuous temperature maintenance mode.
In the bottom string current functions of the buttons are indicated: «–» lowering of the preset temperature, «menu» enter into device's menu, «+» increasing of the preset temperature.
When turned on for the first time, I•WARM 720 starts working in the continuous maintenance mode (factory setting +25°C). When turned on with your selected settings the I•WARM 720 starts working in that mode and will remain with those parameters until changed by you.
You can change the preset floor temperature by pressing «+» for increasing and «–» for reducing. This value will remain set as comfort temperature in all the modes until you change it again.
The display gets highlighted at pressing any button and remains highlighted for approximately 40 seconds and pressing any one button then I•WARM 720 thermostat keeps on working automatically according to the set work mode. The bottom string displays the current time and date.
The buttons are not active, i.e. their first pressing only «wakes up» the device and turns on the highlighting. To activate the device press and hold any one button.
You can choose a screen saver to show either current day and time or current time.
1. Current floor temperature (°С)
2. Preset floor temperature (°С)
3. Heating system is powered and calling for heat
4. Operating mode symbol:
4.1 
maintenance of preset comfort temperature
4.2 
daily program
4.3 
weekly program
5. «+» button for maintaining temperature increase
6. Button for device turn ON/OFF and menu functions
7. «–» button for maintaining temperature decrease
When heating system is powered, the symbol 
indicates system on. When I•WARM 720 is not calling for heat the display eliminates the symbol 
.
In 40 seconds after last button is pressed the display highlight is automatically dimmed, and the devise enters to the preset mode of automatic temperature maintenance. At bottom string instead of button functions current date and time are indicated. The buttons are not active until further pressed, after that the display is highlighted and button functions become displayed in the bottom string.
Menu structure of the thermostat
To control the device and setting of its working parameters, the thermostat is provided with graphic menu subdivided into parts according to their purpose of function. To enter the menu press the Menu button in main indication window of the thermostat. Names of menu subdivisions will be displayed that can be browsed by pressing Up and Down buttons, in the following sequence:
1. Program settings
2. Save settings and exit
3. Statistics
4. Set date and time
5. Settings and limitation
To enter the required menu subdivision, press Select button in this division.
To return to the main menu press Select button in Save settings and exit division.
Current time and date settings
Entering correct date and time ensures correct operation in daily and weekly program modes. To set date and time, when in basic mode press the Menu button, browse to Set date and time submenu and then choose Select button to set date and time (fig. 4). In the appeared window (fig. 5). The first two digits (hours) are blinking. Pressing «+» и «–» buttons to set the current hour, then press the Set button.
Now the other two digits (minutes) are blinking. Set the correct value and press the Set button. The current time is set and the display prompts you to select a week day (fig. 6).
Pressing the up down arrows set the current weekday; then press the Set button.
Then the display shows the boxes for setting of date, month and year with relevant blinking digits (fig. 7, 8, 9). Set them one by one in a similar way to setting hour and minutes, pressing the Set button each time.
Thus, you have set the current time, weekday and date.
The display outputs animation confirming the settings made and indication will go back to the Menu. Using up and down arrow buttons, choose the item Save settings and exit and press the Select button (fig. 10).
The device now runs in its operating mode. This operation mode is intended for continuously maintaining of a comfort room temperature set by you.
The daily/weekly program modes will help you to adjust heating schedule according to your needs in the best way thus assuring optimal balance between comfort requirements and energy saving. Using all capabilities of the programmable
Self learning thermostat will enable you to run the system with energy efficiency.
Daily program mode
This mode allows the device to be set for a 7 day period from a single input.
This mode is the efficient means to save electrical energy when you need to maintain heating at a selected time of a day rather than continuously. You can set multiple of periods during the day marked as comfort with a 30_minute step.
The rest of the day is marked as economy while the heating is off. Based on accumulated knowledge the thermostat will turn on the electric under floor heating beforehand at the end of the economy period so that the desired temperature will be achieved exactly at the set time.
The comfort temperature (factory setting +25°С) is set in the main indication window by using the «+» and «–» buttons being the same for all comfort periods irrespective of the operation mode.
To set the daily mode press the Select button to access Menu, while the thermostat operates in the main mode, and then by pressing the up and down buttons select the program setting item (fig.11), then press the Select button. Then
select the Program day item (fig.12), then the submenu appears (fig.13).
Choose Activate to start the daily mode with the prior set parameters.
Important: The manufacturer does not provide «comfort» periods set in the daily mode. You have to set them through menu when you first run this mode otherwise the heating will be always off. Further your settings will be always used in this mode until you change them.
The view item allows you to view the heating diagram without editing capability. The edit item enables you to set a heating schedule (when this mode is first run) or to edit the existing one.
For convenient setting and viewing the schedules the device is provided with visualization of comfort and economy periods distribution during the day as a graph presenting the time axis with comfort periods marked with hatch and economy periods left blank. To set/edit the daily schedule choose edit and press the select button. You will see the time axis for you to set the comfort and economy periods (fig. 14).
Moving along the time axis with the right and left buttons, you can set the comfort and economy periods using the central (alternately switched) buttons in desired intervals.
For example, you want to set the comfort periods from 7:00 to 9:30 (in the morning) and from 19:00 to 22:30 (in the evening). When you enter the edit submenu you can see the first time interval (from 00:00 to 00:30) and since not hatched this range is economy. Keep on pressing the right button until the interval you desire to set as comfort (07:00–07:30) (fig. 15).
Press the comfort button to set this time interval as comfort (at that the middle button changes to economy) (fig.16).
Keep on pressing the right button and the comfort button to extend the comfort period to the time interval 09:00–09:30 (fig. 17).
Keep on pressing the right button till the time interval 19:00–19:30 leaving the passing intervals as economy (fig. 18, 19).
Press the comfort button to set this time interval as comfort (fig. 20).
Keep on pressing the right button and the comfort button to extend the comfort period to the time interval 22:00–22:30 (fig. 21).
Keep on pressing the right button till the time interval 23:30–24:00 leaving the passing intervals as economy (fig. 22).
Now, when the end of the day is reached, pressing the right button will complete the task, and the device will return to the Program day submenu.
To activate the set program choose Activate and then press the Select button.
Should you fail to activate your heating program within one minute, the device will return to operation in the previously chosen mode; the data you entered will not be saved.
The activate command starts the daily program being set by you (or the previously saved settings). This command is also used in the instance when the device has been switched on in another operating mode. (e.g. constant temperature maintenance). After selecting this command the display will
turn to the main menu item selection. To return to main indication window of the device press the select button in Save settings and exit item.
The view command allows you to view the daily heating schedule without capability of making changes.
Use the right and left buttons to move along the time axis. Press exit to exit from the view mode (fig. 23).
Exit from the submenu Program day by choosing Activate, choose Save settings and exit from the Main menu and press the Select button. The device will be set according to the heating program entered by you, which is indicated by symbol appearing in the upper right corner (fig. 24, 25).
Weekly program mode
This operation mode will enable you to achieve even better efficiency than the daily one, as it allows for more precise adjustments to your existing day to day activity needs. You can set the comfort and economy periods for each day of the whole week. For example you can turn off heating for
a weekend or days when you are away. In case your arrangements change you don’t need to change the weekly program, as you can shift to a daily program for this period or choose the continuous maintenance mode.
You can set multiple periods during the day marked as comfort with a 30_minute step. The rest of the day is marked as economy while the electric under floor heating is off. Based on accumulated knowledge the thermostat will turn on heating beforehand at the end of the economy period so that the desired temperature will be achieved exactly at the set time.
The comfort temperature (factory setting +25 °С) is set in the main indication window by using the «+» and «–» buttons being the same for all comfort periods irrespective of the operation mode.
To turn to the weekly program mode press the Menu button while the thermostat operates in the main mode, and then by pressing the up and down buttons select the program setting item (fig. 26).
Then using the up and down buttons choose the Program week item (fig. 27).
Press the «Select» button. The appropriate menu will appear on the display (fig. 28).
Choose activate to start the weekly program mode.
Important: The manufacturer does not provide «comfort» periods set in the weekly mode. You have to set them through menu when you first run this mode otherwise the heating will be always off. Further your settings will be always used until you change them.
The view item allows you to view the heating schedule without editing capability. The edit enables you to set a heating schedule for each day of a week (when this mode is first run) or to edit the existing one. To set/edit the weekly diagram choose edit and press the select button. You will see the time axis for you to set the comfort and economy periods (fig. 29).
To set a weekly program you should make daily settings one by one starting from Monday as described in the previous section Daily program mode. You can simplify the process by copying the settings made for one day to another.
For example you can copy the settings made for Monday to the other weekdays, then make settings for Saturday copying it to Sunday.
For example you want to one set the comfort periods for days from Monday to Friday and other set for Saturday and Sunday.
For this use the appeared window for Monday to enter the firs set as described in the previous section Daily program mode, then the following window appears (fig. 30).
Move cursor to Yes and press the Select button. The program you set for Monday will be copied to Tuesday. If you selected No you would have to set the heating program for Tuesday manually.
Copy the heating program to the other weekdays to Friday. Then you can see the message if the heating program should be copied to Saturday (fig. 31).
Set cursor to No and press the Select button. You can see the window for Saturday (fig. 32).
Set a heating program according to your set of comfort periods planned for weekends as described in the previous section Daily program mode, then you will see the message if the heating program should be copied to Sunday (fig. 33).
Set cursor to Yes and press the Select button. The heating program set for Saturday will be copied for Sunday.
If you want a different program you should choose No and set your program manually.
Then after the weekly program is complete the device will reset to the Program week submenu (fig. 34).
To activate the weekly program choose Activate and press the Select button.
Should you fail to activate your weekly heating program within one minute, the device will reset to the previously set operating mode; the data you entered will not be saved.
This is also valid for the case when in the course of program entering or moving through menus none of the buttons is pressed for one minute.
The activate command starts the daily program being set by you (or the previously saved settings). This command is also used in the instance when the device has been switched on in another operating mode. (e.g. constant temperature maintenance). After selecting this command the display will turn to the main menu item selection. To return to main indication window of the device press the select button in Save settings and exit item.
The view command allows you to view the weekly heating schedule without capability of making changes. Use the right and left buttons to move along the time axis. Press exit to exit from the view mode.
Exit from the submenu Program week by choosing
Activate, choose save settings and exit from the main menu and press the select button. The device will be set according to the weekly heating program entered by you, that is indicated by symbol 
appearing in the upper right corner (fig. 34, 35).
Control and monitoring of electric under floor heating system
The I•WARM 720 thermostat permanently controls the operating condition of the heating system. If it is impossible to heat the floor surface to the preset temperature you will see the ATTENTION sign displayed (fig. 36).
There are two main reasons why the I•WARM 720 may not reach the preset temperature; (1) if doors and windows are open for long periods of time (2) the loading (watts/m2) of your heater is insufficient to achieve desired temperature in your premise.
The thermostat permanently controls the operation of the floor sensor. In the event of a malfunction of the floor sensor (cut off or short circuit of connection wires) it is impossible for the heating system to operate. The thermostats will turn heating system off and display a warning message (fig. 37, 38).
In this event you should contact the manufacturer or your local supplier.
Setting of common parameters of the thermostat
Several common parameters are valid for all thermostat’s operating modes can be set via item Settings and limitation of the main Menu. You can set there a limit of maximum floor temperature (this may be important for some types of floor coverings, or if children visit this room) and indication in device's operating mode heating parameters and current time and date, current time (in large print).
To set the common parameters, press Menu button when in operating mode, and choose item Settings and limitation (fig. 39).
The window for setting of maximum floor temperature limit appears on the display (fig. 40).
Press up and down buttons to set the required value and press the Set button. The window for choose of type of indication in device's operating mode appears (fig. 41).
The following types of indication are available:
a) «Clock» — display of current daytime in large print (fig. 42).
b) «None» — main indication window of the device indicating heating parameters and current date and daytime (fig. 43).
The last type of screen is the main one, the device returns to it after pressing of any one key when «Clock» screen is displayed and after using menu. If indication type «Clock» is selected, the device turns to it after 40 seconds of pressing last key.
Press up and down buttons to choose the desired option of indication («screensaver») and press the Set button.
The display is returned to selection of the main Menu items. Select the item save settings and exit and press the Select button (fig. 44).
The device now turns in its operating mode with the entered common parameters.
Output of energy saving statistics data
The I•WARM 720 accumulates statistic data on the heating system operation, which allows you to evaluate actual saving benefit from the heat controller used in your electric under floor heating system.
The result displayed by the thermostat is calculated by the formula:
Saving (economy) for a period = 100% – (time when heating is on during the period / period duration)*100%
To display the statistics data press the Menu button when
I•WARM 720 is in operating mode, then choose Statistics item and press the Select button (fig. 45).
Pressing the up and down buttons you can view the statistic data for 24 hours, for a week, and for a month (fig. 46, 47, 48).
To exit from statistics viewing mode press the Exit button.
In the main Menu go to the item save settings and exit and press the Select button. I•WARM 720 will return to its current operation and indication mode.
Warranty policy
Warranty period – one year from the date of sale.
During the warranty period the customer has a right to repair or replacement of the product in the event a failure is detected due to the fault of the manufacturer and on condition of keeping of guides of Installation and Operation Manual of this device.
The warranty policy does not cover thermostats having mechanical damage and cases when the failure is appeared as a result of disregard of operating conditions provided in this Manual, and also instructions provided in the Manual for device installation an electrical connections.
Reclamations
In case of failure appearance during the warranty period of the device the customer must immediately apply to his supplier.
Appendix
Delivery set
1. I•WARM 720 Thermostat
2. Floor mounting temperature sensor with connection cable
2m long
3. External terminal block for earthing line connection
4. User_ and installation manual
5. Packing box
I•WARM 720 Installation manual
Important: Switch off power before connecting or disconnecting wiring to thermostat. A qualified electrician to current
Indoor Electrical Equipment regulations must install all wiring; failure to do so may invalidate the warranty. We strongly recommend NOT to install the thermostat in premises with high air humidity. It is prohibited to install the device in bathrooms, saunas, shower cubicles, pools. The thermostat controlling the electric under floor heating in these premises must be installed in neighboring dry room. Please study this manual carefully before start the installation work.
Tools and materials required for thermostat installation:
1. Corrugated plastic tube not less than 16mm in diameter; the length depends on distance between the thermostat and the heating unit
2. Standard junction box for wall mounting units
3. Screwdriver
4. Phase voltage indicator
Installation of floor mounting temperature sensor
Floor temperature sensor is installed when you perform your heating element (mat or cable section) installation. Place the sensor in the corrugated plastic tube near its end, and seal this end of the tube to prevent penetration of water, tile fixing mixture or cement mortar in the course of heated floor arrangement. The tube containing the temperature sensor must be located at the same level as the heating cable between two neighboring passes of this cable. Place the tube in preliminarily prepared grove in the floor and lead its other end to the place chosen for thermostat or junction box location. Cut off excessive tube length at sight.
Thermostat connection
Preparation of electrical connections
Install junction box into the wall where location of the thermostat is planned. Lead to the box power supply cable, cold leads of the heating mat or section, temperature sensor cable. Power the cable off.
All thermostat connection work must be performed only when power network is completely disconnected. Connect all required wires to the thermostat using its terminals with screw fastening (fig.49).
If you have three wire power network (with separate earthing conductor) use the connection diagram showed on fig. 50. Heating cable screen is connected to the earthing condutor of the network by means of external terminal block (included in the delivery set), by screw fastening.
Thermostat installation
First of all disassemble the thermostat. Take off the front cover, for that by thin screwdriver carefully press in turn the locks located on upper and lower sides of the front cover, pulling it slightly out (fig. 51). Remove the cover (fig. 52).
Remove the frame (fig. 53).
Place the device into the junction box and fasten by means of at least two screws (preferably located at the same horizontal level). (fig. 54).
Assemble the thermostat acting in reverse order. Install the frame carefully ensuring that it closely fits to the device’s case. Then return the front cover to its place and press it ensuring that both locks have fixed it. Make sure that the front cover is fixed properly.
Technical specification
Supply voltage 230 V ~ 50 Hz
Maximum load current 16 А
Consuming power 0,45 W
Weight 150 gr
Size 80 х 80 х 52 mm
Time of setting storage when supply is disconnected 12 months
Protection Index IP20
Floor mounting temperature sensor NTC 6,8 kOhm
Length of sensor connection cable 2 m
Built in air temperature sensor NTC 6,8 kOhm
Allowable ambient air temperature +5 °С +40 °C
Allowable relative air humidity 80%