MULTIREG LCD2 User manual

Ver 2021-B
Multireg LCD2 is an electronic thermostat with four functions.
Room sensor, floor sensor, power regulator and maximum /
minimum limiter. The thermostat has a backlit LCD-display and
weekly programming.
CONNECTING THE THERMOSTAT
The thermostat must be connected to electrical systems in
accordance with the wiring diagram (Fig.3). The thermostat
must be connected to a residual current disrupter with a max.
trigger current of 30mA.
The thermostat can withstand a load of max. 16A/3600W at
230V. At higher loads, the thermostat must control a contactor.
The thermostat does not have a galvanic insulation between
high current and low current. The sensor must therefore be
regarded as live (230V) and must be installed in accordance with
current requirements for high current installations.
The front cover is removed by pressing the locking clips into the
lower slot on each side of the thermostat (Fig.2). Take care not to
damage the thermostat.
Installation guide
Fig.1
Function indicators
Clock
Temperature
Selection buttons
OK-button
(changing functions)
On/o
MULTIREG
LCD2
01.01.2021
Version 2.28
Installation guide
Ver 2021-B

CONNECTIONS:
Torque: 2Nm
Terminal 1: S (connected to L for setback temperature)
Terminal 2: L
Terminal 3: N
Terminal 4+5: NTC - Floor sensor
Terminal 6+7: Max. load 3600W (LOAD)
STARTUP/CLOCK SET
After the thermostat is connected to 230V and you press the
on/off button, the thermostat will switch on at 20°C. The
time display will flash 00:00. The thermostat is now in room
temperature sensor mode with set temperature and the symbol
is shown in the display.
Before programming your thermostat, you must set the clock.
Press the OK button for 5 seconds. When the clock symbol
flahes, press OK once.
Choose whether or not you want to display the time (on/off).
(Set temperature does not require the clock to be set.)
Confirm with the OK button.
If you choose OFF, the thermostat is ready to be used in set
temperature mode. For use with other modes, choose ON.
Choose the day of the week. 1=Monday, 2=Tuesday etc. Confirm
with OK.
Set the hours and minutes. Confirm with OK. The clock symbol
flashes. Continue to the next paragraph: Choosing a program.
When the symbol is shown in the display, it indicates that
the heat is on.
CHOOSING A PROGRAM
a) Set temperature
When the symbol is shown in the display, the thermostat is
programmed to the set temperature option. To switch between
set temperature and weekly program press the OK button and
the left selection button simultaneously for 5 seconds.
b) Weekly program - setback temperature
Press the OK button and the left selection button
simultaneously for 5 seconds.
Weekly schedule is shown with symbol in the display.
Fig.2
1 2 3 4 5 6 7
OK-button
(changing functions)
Fig.3

Set the time for morning comfort temperature. Symbol
Confirm with OK.
Set the desired temperature. Confirm with OK.
Set the time for daytime economy temperature. Symbol
Confirm with OK.
Set the desired temperature. Confirm with OK.
Set the time for afternoon comfort temperature. Symbol
Confirm with OK.
Set the desired temperature. Confirm with OK.
Set the time for nighttime economy temperature. Symbol
Confirm with OK.
Set the desired temperature. Confirm with OK.
Set the time for weekend comfort temperature. Symbol
Confirm with OK.
Set the desired temperature. Confirm with OK.
Set the time for weekend economy temperature. Symbol
Confirm with OK.
Set the desired temperature. Confirm with OK.
The thermostat automatically leaves programming mode after
10 seconds. Alternatively, you can switch the thermostat off and
back on. The settings are stored automatically.
SETBACK MODE
Setting the temperature
Press down the OK button for 5 sec. Press the right selector
button twice. The symbol appears in the display.
Confirm with OK.
Set the desired temperature. Confirm with OK.
Manual activation of setback mode
Hold down OK and right selector button for 5 sec. The symbol
appears in the display. Deactivation is done in the same way.
External activation of setback mode
Activation via a relay and/or a GSM-module connected via the
S and L clamps at the back.
Choosing sensor mode
Press the OK button for 5 seconds. Press the right selection
button 3 times. The symbol is shown in the display.
Confirm with OK.
Set the desired sensor type.
A = Room sensor
F = Floor sensor
AF = A combination of floor sensor/room sensor
P = Power regulator
Confirm with OK.
(The F and AF choices are only valid if a floor sensor is
connected to clamps 4+5.)
If AF mode is chosen, the Min and Max temperature must be
confirmed. The preset values are Min=10°C and Max=27°C.
Confirm with OK.

Functions of the different sensor modes:
A: Room sensor
Multireg LCD2 has a built-in room sensor. It is important that
the thermostat is placed so that it has free air flow around it. It
should not be exposed to direct sunlight, draught from doors
e.g, since this may cause the thermostat to misread the room
temperature. Room sensor mode is the default setting for the
Multireg LCD2 thermostat.
F: Floor sensor
The floor sensor is placed in a tube in the floor when the floor
is installed. The floor sensor reacts quickly to changes in the
temperature and is less vulnerable to external conditions than
the room sensor.
AF: A combination of room sensor and oor sensor
The room sensor controls the temperature, but the floor sensor
will override the room sensor if the floor temperature becomes
too high or too low according to the Max or Min settings.
For example:
The room sensor is set to 22°C. The floor sensor is set to Min
18°C - Max 26°C. If the floor temperature dips below 18°C the
heat will be turned on even if the room temperature is above
22°C. If the floor temperature exceeds 26°C, the heat will be
turned off even if the room temperature is less than 22°C.
P: Power regulator
The power regulator has a 30 minute cycle. The desired pulse/
pause ratio may be set from 0 til 10, where each level increases
the switch-on time by 3 minutes. For example: Level 3 indicates
that the heat is switched on for 9 minutes and off for 21
minutes, while level 6 will switch the heat on for 18 minutes
and off for 12 minutes.
PROGRAMMING AN NTCSENSOR
Multireg LCD2 supports a number of NTC sensors (10kOhm,
12kOhm, 15kOhm, 33kOhm and 47kOhm). The standard sensor
value is10kOhm. Choosing an NTC sensor type is only possible
in F and AF mode. A floor sensor must be connected to change
the sensor type.
Press the OK button for 5 seconds. Press right selection button 3
times. The symbol is shown in the display.
Confirm with OK.
Press the right and left selection buttons simultaneously for
5 seconds. The chosen sensor value flashes in the display
(10kOhm standard).
Choose your sensor value by pressing the left or right selection
buttons. Confirm with the OK button twice.
TEMPERATURE CALIBRATION
Press the OK button for 5 seconds. Press the right selection
button 4 times. The symbol is shown in the display.
Confirm with OK.
“ROOM”- and/or“FLOOR”- sensor may be calibrated with
+/- 9,5°C. Confirm with OK.

DISPLAY LOCK / CHILD LOCK
Press the right and left selection buttons simultaneously for 3
seconds. The symbol is shown in the display.
The lock is deactivated in the same way.
ERRORS AND POWER FAILURE
Error codes:
E1 - Indicates a room sensor error
E2 - Indicates a floor sensor error
When an error occurs, the thermostat will revert to 20%
of max. load.
Multireg LCD2 has a 5 hour memory, which will save your
settings in case of a power failure.
49,5mm
12,3mm 23,4mm
L
N
PILOT WIRE
SENSOR
HEATING L
HEATING N
49,5mm
49,5mm

Thermo-Floor AS l Østre Totenvei 24, NO-2816 Gjøvik, NORWAY
T: [phone] l post@thermo-oor.no – www.thermo-oor.no
ART. NO. PRODUCT COLOR
54 303 01 Multireg LCD2 thermostat 4 func. 3600W 16A White RAL 9010
54 304 01 Multireg LCD2 thermostat 4 func. 3600W 16A White RAL 9003
54 304 49 Plastic kit for the Multireg LCD2 thermostat Black RAL 9011
54 303 11 Frame, single White RAL 9003
54 303 12 Frame, single Black RAL 9011
54 301 07 Floor sensor Ø 4mm 3 meters NTC 10 kΩ
54 301 08 Floor sensor Ø 3mm 6 meters NTC 10 kΩ
54 304 71 External enclosed sensor IP 20/54
PRODUCT INFO Multireg LCD2
FEATURES
• Room sensor
• Floor sensor
• Temperature limiter
• Power regulator
• Weekly schedule
• Setback via pilot wire
• Lock mode/child lock
• Backlight
• Calibration
TECHNICAL DATA
Rated voltage 230V 50/60Hz
Max load 3600W (resistive loads only)
Max current 16A
Power consumption 0,5W
Power regulator Time cycle 0 - 30min
Ambient temperature 0°C - 60°C
Temperature reg. area Floor sensor 5°C - 60°C
Room sensor 5°C - 40°C
Hysteresis 0,5°C
Switch 2-pole-switch
Included in package .... ........Floor sensor, Art. no. 54 301 07
Compatible with NTC
sensors with values ........10, 12, 15, 22, 33 and 47 kΩ @ 25°C
IP code IP 21
Approvals CE
EMC 2014/30/EU, RoHS 2011/65/EU
LVD 2014/35/EU
TERMINAL
Use 1,5mm² or 2,5mm² according to load.
May be ordered with Eljo front and frame.
MAINTENANCE
The device is maintenance-free, but must never be covered.
WARRANTY
2 years
Thermo-Floor AS can not be held liable for typographical errors, other errors or omittances in our
information. Product specifications may change without further notice. All electrical installations
must be carried out by a licensed electrician. The product must be installed in accordance with
national building codes and our installation guides.