Lorenzoni LOR-THERM 205 User manual

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INSTRUCTION MANUAL
LOR-THERM 205
Cod. 523.0000.101

26
For the guarantee to be valid, the
product must be installed and operated
as indicated in this manual. This means
it is extremely important that you read
the manual. This applies both to the
person installing the thermostat and
the person who is going to use it. You
will also nd troubleshooting details
and technical specications.
Important The underoor heating system
is an electrical power installation and must
therefore be installed in accordance with the
current regulations and under the supervision
of a qualied electrician.

27
EN
Introduction
In the package
Installing the thermostat
Getting started
How the thermostat works
Symbols on the display
How to set the thermostat
Energy saving programs
Troubleshooting
Technical specications
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Introduction
This is a microprocessor-controlled
thermostat with LCD display. The dis-
play has dimmed background lighting
which lights up fully by pressing any
button. The display stays lit for 30 se-
conds after the last button pressed. The
front is tted with an on/o button and
three control buttons.
There are two temperature reduction
programs to choose from for energy-
smart heating.
Temperature control is carried out by
means of an algorithm that uses fuzzy
technology. The technology entails the
thermostat testing and collecting data
from start-up, and based on this, cal-
culating when to turn on and o. This
technology reduces temperature va-
riations and thus provides a more con-
stant temperature and lower energy
consumption. The oor temperature
varies less than +/- 0.3 degrees.
Thermostat with fuzzy technology
Thermostat without fuzzy technology
TIME
TEMP

29
EN
In the package
1
1. Front for Elko, Gira, Busch-Jaeger,
Jussi frame systems.
2. Adapter for Strömfors frame system
3. Front for Eljo Trend, Merten
4. Frame
5. Thermostat
6. Floor sensor
7. Connection clip
Manual
Quick guide
23
4 5
6
7

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Installing the thermostat
Important the thermostat must not be
installed where it may be exposed to
the following:
• direct sunlight and draughts.
• extreme uctuations in temperature
or high air humidity.
The oor sensor should be mounted in a
spiral hose laid in the oor. The hose en-
dings should be sealed so that the oor
sensor can easily be replaced. All tubes
leading into the appliance box must be
sealed so that the air temperature sensor
cannot be aected by draughts.
Installation
Mount the thermostat in a 65mm
standard appliance box.
1. Make sure the box is level with the wall.
2. Take o the front and frame by pres-
sing in the latch on the right-hand side
with a screwdriver or similar tool, as
shown in the illustration.
3. Connect power, voltage 230 VAC,
load and any oor sensor cable. Any
extension to the oor sensor cable
must be by means of high-voltage cur-
rent. Protective conductors for the

31
EN
incoming feed and for the heating cable
are connected with a connection clip in
the box. See wiring diagram below.
4. Insert the thermostat into the
appliance box and screw tight with the
existing screws.
5. Fit the frame and front.
6. If the thermostat is mounted in a
multi-compartment frame, the internal
corners of this frame must be removed.
LOAD LOAD
N
L
SENSOR SENSOR
DO NOT USE
230 V

33
EN
Getting started
After installation, wait 2-4 weeks
before starting the underoor heating.
Precisely how long you wait depends
on the type of oor you have and the
instructions for the oor ller. Then
increase the heat gradually. This does
not apply to those who have laid a
wooden/laminate oor on the oor
heating.
There is a quick guide that helps you to
get started easily with the thermostat.
You will nd it in the package. The
guide describes the most important
functions and settings.
In order to adapt the underoor
heating system to your own heating
requirements as much as possible, it
is important that you read the entire
manual.

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On/o button
Selection button
Selected control
How the thermostat works
This section describes all you need to
know about how the thermostat works.
To learn how to enter settings to suit
your own requirements, read the How
to set the thermostat section.
Display
The light in the LCD display is fully
lit when you press any button, and
remains lit for 30 seconds after the last
button pressed. The light then dims
again. It is possible to set the display
to turn the light o entirely. This is des-
cribed in the How to set the thermostat/
Light and contrast section.
Temperature

35
EN
If the display is empty, it means that
the thermostat is turned o or that it is
not connected to the power supply.
When the thermostat is started for the
rst time the display shows the factory
settings as shown in the illustration.
How to enter personal settings is des-
cribed in the How to set the thermostat
section.
There is an explanation of the symbols
on the display in the Symbols section.
Using the buttons
The buttons are used to raise and lower the
temperature as well as to scroll the menus.
You access the menus by pressing the
selection button, . Use the arrows
to scroll to a menu option and then
conrm with to select it. The menu
system is a scrolling system, in other
words you come to all submenus re-
gardless of the direction you scroll.
If you want to exit a menu, scroll until the
display shows END. Then press the selec-
tion button . You can also wait for 30 se-
conds and the menu exits automatically.
How to navigate the menus is described
in the How to set the thermostat section.

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Turning on and o
Keep the on/o button pressed for one
second to get to standby mode. Return
to normal mode by once again pres-
sing the button for a second.
The heating cannot be controlled in
standby mode. The clock runs as nor-
mal, and selected programmes and set
temperatures are stored in the memory.
Locking the keypad
The keypad can be locked to prevent
anyone touching the buttons by
mistake. This is shown with the LOCK
symbol in the display.
Press and scroll to LOCK. Conrm
with to lock.
Unlock by holding down both arrows
until the LOCK symbol has disappeared.
Temperature
Displaying current temperature (actual
value)
Lock the keypad rst. Press . The light
will come on and the current tempera-
ture in the oor (F) is displayed. This is
the case if the thermostat is set to

37
EN
Floor thermostat. Otherwise the actual
temperature (R) in the room is display-
ed. The temperature is shown for 30
seconds after the last button pressed.
Time and date
Time is set in 24-hour format. The
correct day of the week is worked out
automatically. The calendar resets itself
in leap years and adapts to DST. Read
how to set the correct time and date in
the How to set the thermostat/Time and
date section.
Adaptive function
The thermostat has a function which
works out when the heating should
start to give the correct temperature
at the correct time. It is activated on
delivery, but can be turned o:
Press and scroll to SET. Select with .
Scroll to AF, select with .
Scroll between ON/OFF, then conrm
with .

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Ventilation mode
If the room temperature falls by more
than 3°C in a single minute, e.g. when
airing the room, the ventilation mode is
activated. The thermostat will then stop
heating for 15 minutes before returning
to normal mode.This function is always
active.
Delay between turning o and on
There is a built-in delay in order to
avoid unnecessary wear and tear on
internal components and to extend
the life of the thermostat. If you raise
the desired temperature so that the
thermostat comes on, and then lower
it shortly afterwards, it takes four min-
utes before it goes o again.
Current status
The heat symbol allows you to see the
current status. See the Symbols on the
display section.
Symbol on - the thermostat is on and
the underoor heating is activated.
Symbol o - the thermostat is on and
the underoor heating is switched o.
Control functions
The thermostat can regulate the tempera-
ture in three dierent ways. This enables
the comfort temperature and any ooring
temperature requirements to be combined.

39
EN
How you select the function you want
is described in the How to set the ther-
mostat/Control functions section.
Floor thermostat - A sensor in the oor meas-
ures the temperature and then regulates
the heating accordingly. If the oor sensor
is connected when the thermostat is turned
on for the rst time, this function is selected
automatically. The preset value is 22°C.
Room thermostat - the thermostat has
built-in sensors for measuring the room’s
temperature and controlling the heating.
The control function cannot be selected
when the oor sensor is connected.
Room and oor thermostat - The built-in
sensor regulates the room temperature
and the sensor in the oor functions as a
oor temperature limiter. The limitation
can be set to between 5°C and 45°C. The
factory setting of 35°C gives a surface
temperature of approx. 27°C. The cut-out
temperature can be changed, see the
How to set the thermostat/Temperature
section.
Important
In rooms with large windows that are ex-
posed to solar insolation, we recommend
the Room and oor thermostat function.
In rooms with wooden ooring, the
Room and oor thermostat function
must always be used.

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Symbols on the display
1. Selected menu/LOCK for locked
keypad
2. Heating symbol
3. Current temperature (actual value)
/Set temperature (set point) °C
4. Symbol for energy saving programs,
oce
5. Selected control
6. Symbol for energy saving programs,
home
1
3
2
64
5

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EN
How to set the thermostat
This section describes how to set the
thermostat to suit your requirements.
By entering these settings you can fully
utilise the underoor heating system
to meet your own heating require-
ments.
If you want to nd out more on how
to scroll the menus or use the keypad,
read the How the thermostat works
section.
Reset
You use the Reset function to revert
the thermostat to the default factory
settings. All your personal settings will
be deleted.
Press and scroll to SET. Select with .
Scroll to RST and select with .
Scroll between NO/YES, then conrm
with . YES deletes the settings, NO
returns to the menu.

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Light and contrast
Set the display background lighting
The display stays lit for 30 seconds after
the last button pressed. The light then
dims again. It is also possible to set the
display to turn the light o entirely.
Press and scroll to SET. Select with .
Scroll to DISP and select with .
Scroll between ON/OFF, then conrm
with . ON sets the display to a weak
light 30 seconds after the last button
pressed, while OFF turns the display
light o completely.
Set display contrast
Press and scroll to CONT. Press to
select. The display shows a number
between 1 and 8 depending on the
current setting. Scroll to regulate the
contrast. Conrm with when you
have found the correct level.
Time and date
Set time and date
Press and scroll to SET. Select with
. Scroll to CLK and select with .

43
EN
First set the hours by scrolling to the
correct time and conrm with . Set
the minutes in the same way and
conrm with .
Set the day, month and year in the
same way. Conrm with . The week-
day is not shown in the display, but
the system set the correct weekday
automatically.
Turn o DST
The calendar switches to DST automat-
ically. This function can be turned o.
Press and scroll to SET. Select with .
Scroll to S and select with .
Scroll between ON/OFF, then conrm
with .
Temperature
Change desired temperature (set point)
Each press of the up or down arrow
increases or decreases the temperature
by 0.5°C.

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Control functions
These are described in more detail in
the How the thermostat works/Control
functions section.
Select control function
Press and scroll to SET. Select with .
Scroll to RNF and select with .
The symbol for the current function (R,
F or R & F) ashes. Scroll between the
dierent options and conrm with .
Important R cannot be selected if the oor
sensor is connected.
Change cut-out temperature for room
and oor thermostat (R & F)
Press and scroll to SET. Select with .
Scroll to OH and select with .
The set temperature now ashes on
the display. Scroll to the desired tem-
perature and conrm with .

45
EN
Energy saving programs
A smart way to save energy is to
adapt the heating to your actual daily
requirements and, for example, lower
the temperature when the house is
empty. There are two preset program
options for temperature reduction in
the thermostat : one for home and one
for oce users.
The heat-up time is always included in
the programs thanks to the adaptive
function. Read more about this in the
How the thermostat works/Adaptive
function section.
Start a program
Press and scroll to PROG. Select with
.
The symbols are shown. The cur-
rent program symbol ashes. If none of
the symbols are ashing, no program
has been selected. Scroll between
the symbols. Select with and the
program starts. The program symbol is
displayed when the program is run.