Lengrad MyHome User Manual
www.homesystems-legrandgroup.com
User Manual
H/LN4691 - 0 674 59 - 64170
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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