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User Manual
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Thermostat with display
Thermostat with display
User Manual
Contents
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Thermostat with display
User Manual
1 Thermostat with display 4
1.1 Features 4
1.2 Which system do you have? 4
2 Description 5
2.1 Meaning of icons and keys 5
2.2 Summary of functions and operating modes 6
3 Using the thermostat 7
3.1 MyHOME temperature control system probe (with central unit) 7
3.2 Hotel room thermostat 10
3.3 Individual residential system 14
4 Maintenance 18
4.1 In case of error 18
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Thermostat with display
User Manual
1 Thermostat with display
1.1 Features
The thermostat with display can be used to manage the temperature control system (heating o
cooling) of the rooms where it is installed, and can be configured for different applications based
on needs.
1.2 Which system do you have?
MyHOME temperature system with central unit (par. 3.1)
Thanks to the internal sensor, the thermostat can operate as master probe of a MyHOME system.
In this case, it will obtain the set-points from the central unit that manages the system.
Hotel room system (par. 3.2)
The operation in the hotel room configuration gives the customer the possibility of easily setting
the temperature to the desired level of comfort. The hotel manager can integrate the individual
thermostat installed in the room as part of a system that can be managed using a software for
the monitoring of consumptions, therefore avoiding unwanted energy waste.
Individual residential system (par. 3.3)
The third type of use, as room thermostat, manages the temperature control of an individual
system, without the need for additional control devices.
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Thermostat with display
User Manual
2 Description
2.1 Meaning of icons and keys
1 - Heating function.
2 - Cooling function.
3 - Operating mode icons (see table in paragraph 2.2).
4 - MODE key: a short pressure changes the mode of operation of the device; an extended pres-
sure (unless used as MyHOME probe) changes the function.
5 - “
+” key: increase the set value.
6 - “
–” key: decrease the set value.
7 - FAN key: set the fan coil speed on 3 levels + automatic.
8 - Heating/cooling on indicator (see table in paragraph 2.2).
9 - Fan coil speed indicator, 3 levels.
10 - Fan coil in automatic mode indicator.
11 - Measured (thermometer symbol on) / set (thermometer symbol off) temperature indicator.
12 - Unit of measure: °C or °F.
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Thermostat with display
User Manual
Heating function
If the measured temperature is lower than the reference value, the heating
system is active and the
symbol appears.
Cooling function
If the temperature measured is higher than the reference value, the cooling
system is active and the
symbol appears.
Automatic switching function (no icon)
If the temperature exceeds certain thresholds, the heating or the cooling
symbols can be displayed.
Temporary manual mode (only MyHOME with central unit)
This functions gives the possibility of temporarily switching from a set-point
sent by the central unit to a custom one. The mode remains active until a
new set-point is sent by the central unit.
Comfort mode
The system operates at the ideal set-point set in the heating and cooling
functions.
Eco mode
The system operates at the energy saving set-point set in the heating and
cooling functions.
Antifreeze / Thermal protection / Off
Antifreeze: minimum safety temperature.
Thermal protection: maximum safety temperature.
Off: zone off (MyHOME systems only).
Automatic Mode
Follows the remote set-point (central unit or supervision software).
2.2 Summary of functions and operating modes
2 Description
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Thermostat with display
User Manual
3 Using the thermostat
3.1 MyHOME temperature control system probe (with central unit)
If configured to operate only as probe part of a MyHOME temperature system, the thermostat
receives the main set-points from the central unit (temperature set-point, summer/winter setpoint, etc.). However, it is locally still possible to switch from normal mode to Comfort, ECO,
Antifreeze/Thermal protection modes.
The setting of a manual temperature set-point is possible, but it is only temporary, as it will only
last until the next set-point change sent by the central unit.
Operating mode
Press the MODE key once or more, to select the
desired mode
The symbol of the new mode appears and the set
temperature flashes (thermometer symbol off).
Use
+ and – to change the set-point.).
After a few seconds the new set-point is saved, and
the measured temperature appears (thermometer
symbol on).
Factory settings
Heating Cooling
Comfort
21 °C 25 °C
Eco
18 °C 28 °C
Antifreeze
7 °C
Thermal protection
35 °C
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Thermostat with display
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3 Using the thermostat
Temporary manual mode
Set the desired temperature using
+ or -; the display
will show the symbol
.
The set-point set by the central unit can be
modified temporarily for the zone controlled by the
thermostat. The manual set-point remains active
until the central unit sends a new set-point.
After a few seconds the new set-point is saved and
the measured temperature appears. In this example
the set temperature is higher than the measured
temperature, therefore also the heating on indicator
will come on
.
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Thermostat with display
User Manual
Fan-coil adjustment
Press FAN to set the fan speed at the desired level.
If the thermostat manages a fan-coil type load, it is
possible to adjust the fan speed using the dedicated
pushbutton.
Speed 1
Speed 2
Speed 3
Automatic operation
3 Using the thermostat
Comfort, eco, antifreeze/thermal protection operating modes
Select one of these modes using the MODE key. The thermostat will no longer follow the settings
of the central unit. To return to the settings of the central unit, automatic mode must be set
(always using the MODE key).
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Thermostat with display
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3.2 Hotel room thermostat
This paragraph describes the use of the thermostat in a hotel room.
Temperature adjustment
Use
+ and – to change the current temperature set-
point.
Once the desired value has been set, wait a few
seconds to save the new set-point.
The temperature measured will appear.
Factory settings
Heating Cooling
Adjustment interval 14 – 26 °C 20 – 32 °C
3 Using the thermostat
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User Manual
Antifreeze or Thermal Protection
To switch from normal operation to Antifreeze (or
thermal protection) press the MODE key.
The display shows the symbol and the value set:
7 °C if heating is on;
35 °C if cooling is on.
After a few seconds the new set-point is saved and
the measured temperature appears.
To return to normal operation press MODE again.
3 Using the thermostat
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Thermostat with display
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Switching from heating / cooling function
To switch from heating to cooling and vice versa
press MODE for more than 7 seconds.
7 seconds
The change of function is indicated by the
corresponding icon
appearing on the display.
3 Using the thermostat
This operation may have been disabled
during installation.
If this operation is repeated, the system keeps switching between the two functions. Depending
on the type of system, the operation may cause the switch from heating function to cooling
function, and to automatic switching.
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Thermostat with display
User Manual
Fan-coil adjustment
Press FAN to set the fan speed at the desired level.
If the thermostat manages a fan-coil type load, it is
possible to adjust the fan speed using the dedicated
pushbutton.
Speed 1
Speed 2
Speed 3
Automatic operation
3 Using the thermostat
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Thermostat with display
User Manual
3.3 Individual residential system
The thermostat can be used in the residential sector for the management of a single system.
Temperature adjustment
Once the desired value has been set, wait a few
seconds for the new set-point to be saved.
The value of the measured temperature will then
appear.
Use
+ or – to adjust the current temperature set-
point.
Factory settings
Heating Cooling
Adjustment interval 14 – 26 °C 20 – 32 °C
3 Using the thermostat
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Thermostat with display
User Manual
Operating modes
Press MODE once or more to select the desired
mode.
The symbol of the new mode appears and the set
temperature flashes (thermometer symbol off). Use
+ and – to change the set-point.
After a few seconds, the new set-point is saved and
the measured temperature appears (thermometer
symbol on).
Factory settings
Heating Cooling
Comfort
21 °C 25 °C
Eco
18 °C 28 °C
Antifreeze
7 °C
Thermal protection
35 °C
3 Using the thermostat
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Thermostat with display
User Manual
Switching from heating / cooling function
To switch from heating to cooling, and vice versa,
press MODE for more than 7 seconds.
7 seconds
The change of function is indicated by the
corresponding icon appearing on the display.
3 Using the thermostat
The display shows the set-point set for the heating or
cooling function.
If this operation is repeated, the system keep switching between the two functions. Depending
on the type of system, the operation may cause the switch from heating function to cooling
function, and to automatic switching.
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Thermostat with display
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Fan-coil adjustment
If the thermostat manages a fan-coil type load, it is
possible to adjust the fan speed using the dedicated
pushbutton.
Press FAN to set the fan speed at the desired level.
Speed 1
Speed 2
Speed 3
Automatic operation
3 Using the thermostat
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Thermostat with display
User Manual
4.1 In case of error
The “Er” symbol followed by a number on the display indicates an error condition of the thermostat.
In this case refer to the installer manual, or contact a trusted technician.
Below is an example of an error screen.
4 Maintenance
NOTE: if ER4 or a temperature very different from the one felt are displayed, or after the first in-
stallation, wait at least 5 hours before checking the operation again.
If the problem continues, contact a trusted technician.
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Thermostat with display
User Manual
The guarantee is automatically void in case
of negligence, improper use, tampering by
unauthorised personnel.
BTicino SpA
Viale Borri, 231
21100 Varese - Italy
www.bticino.com
Legrand SNC
128, av. du Maréchal-de-Lattre-de-Tassigny
87045 Limoges Cedex - France
www.legrand.com
Legrand SNC reserves the right to change at any time the content of this document, and to communicate the
changes made in any form, and in any way deemed appropriate.
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