Danfoss DEVI DEVIreg Opti User manual

www.DEVI.com
Installation Guide
DEVIreg™ Opti
Electronic Timer Thermostat fulfilling
Eco Design Directive

DEVIreg™ Opti
Installation Guide2
1 Introduction
DEVIreg™ Opti is an electronic programmable timer
thermostat used for controlling electrical floor heating
elements. The thermostat is designed for fixed installation
only and can be used for both direct heating of the entire
room and for comfort heating of the floor. Among others,
the thermostat has the following features:
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5. Display Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6. Configuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7. Settings & Break out . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8. Disposal Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

DEVIreg™ Opti
3Installation Guide
• A screen display operated by buttons.
• An easy-to-follow, menu driven programming and
operation.
• Pre-installed timer settings.
• Offered with integrated frame.
• Using DEVI standard NTC floor sensor (15 k Ohm at 25°C).
• Open window detection.
• Low stand-by energy consumption.
• Weekly timer.
More information about this product can be
found at: devi.com
2 Technical Specifications
Operation voltage 220-240 V~, 50Hz
Standby power consumption Max. 0,5 W
Relay:
Resistive load
Inductive load
Max. 13 A / 2990 W @ 230 V
Max. 1 A cos = 0,3

DEVIreg™ Opti
Installation Guide4
Sensing units (floor sensor) NTC 15 kOhm at 25°C (Default)
Sensing values:
0°C
20°C
50°C
42 kOhm
18 kOhm
6 kOhm
Control PWM (Pulse Width Modulation)
Cable specification max. 1x4 mm2and 2x2,5 mm2
Ambient temperature 0° to +35°C
Frost protection temperature 5°C to +9°C (default 5°C)
Temperature range Room temperature: 5-35°C.
Floor temperature: 5-45°C.
Max. floor: 20-35°C (if unrecover-
able seal is broken then up to 45°C).
Min. floor: 10-34,5°C, only with
combination of room and floor
sensor.
Sensor failure monitoring The thermostat has a built-in
monitoring circuit, which
will switch off the heating if
the floor sensor is disconnected
or short-circuited
Ball pressure test temperature 75°C
Pollution degree 2 (domestic use)

DEVIreg™ Opti
5Installation Guide
Controller type 1B
Software class A
Storage temperature -25°C to +60°C
IP class 21
Protection class Class II -
Dimensions 85 x 85 x 44 mm
(in-wall depth: 24 mm)
Weight 138 g
Electrical safety and Electro-Magnetic Compatibility for
this product is covered by the compliance with the EN/IEC
Standard “Automatic electrical controls for household and
similar use”:
• EN/IEC 60730-1 (general)
• EN/IEC 60730-2-9 (thermostat)
3 Safety Instructions
Important: When the thermostat is used to control a
floor heating element in connection with a wooden floor
or similar material, always use a floor sensor and never set
the maximum floor temperature to more than 35°C.

DEVIreg™ Opti
Installation Guide6
Make sure the mains supply to the thermostat is turned
off before installation.
Please also note the following:
• The installation of the thermostat must be done by an
authorized and qualified installer according to local
regulations.
• The thermostat must be connected to a power supply
via an all-pole disconnection switch.
• Always connect the thermostat to continuous power
supply.
• Do not expose the thermostat to moisture, water,
dust, and excessive heat.
• This thermostat can be used by children aged from 8
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge, if they have been given supervision
or instruction concerning use of the appliance in a

DEVIreg™ Opti
7Installation Guide
4 Mounting Instructions
Please observe the following placement guidelines:
Place the thermostat at a suitable height on the
wall (typically 80-170 cm.).
The thermostat should not be placed in wet
rooms. Thermostat must be placed outside zone
2. Place it in an adjacent room and use floor sen-
sor only. Always place the thermostat according
to local regulation on IP classes.
Do not place the thermostat on the inner side of
a poorly insulated exterior wall.
safe way and understand the hazards involved, by a
person responsible for their safety.
• Children should be supervised to ensure that they do
not play with the thermostat.
• Cleaning and user maintenance shall not be made by
children without supervision.

DEVIreg™ Opti
Installation Guide8
Always install the thermostat at least 50 cm from
windows and doors, due to draft, when using
regulation in: floor and room mode or room
alone mode.
Do not place the thermostat in a way that it will
be exposed to direct sunlight.
Note: A floor sensor is recommended in all floor
heating applications and mandatory to thin
matsand under wooden floors to reduce the risk
of overheating the floor.
• Place the floor sensor
in a protecting plastic
conduit in the floor
construction in an ap-
propriate place, where
the floor is not exposed
to sunlight or draft
from door openings.
• Equally distant and >2 cm from the heating cables on
both sides.
12
≥

DEVIreg™ Opti
9Installation Guide
• The conduit should be flush with the floor surface, coun-
tersink the conduit if necessary and possible.
• Route the conduit to the connection box.
• The bending radius of the conduit must be min 50 mm.
Follow the steps below to mount the thermostat:
1. Unpack thermostat
2. Remove the front cover as showed
on Pic. 1.
3. Connect the thermostat accor-
ding to the connection diagram.
The screen of the heating cable
must be connected to the earth
conductor of the power supply
cable by using a separate con-
nector.
Note: Always install the floor sensor in a conduit in
the floor.
IP21
0T35
Mains 220-240V~
50Hz
Max Load
13(1) ASensor
Danfoss A/S, 6430 Nordborg, Denmark
Ambient Temperature: 0-35°C
Standby maximum 0.5W
Made in P.R.C.
DEVIreg™ Opti
S2 S1 L N
LOAD
L
LOAD N
Pic. 1
Pic. 2

DEVIreg™ Opti
Installation Guide10
4. Fasten the thermostats back part
firmly to a flush mounted wall box
or an exterior wall box by driving
the screws through the holes in
each side of the thermostat.
5. Click the front part module in
place. Pay attention, in relation to
the female header, in not to bend-
ing the connectors. Press carefully
until the frame is fixed firmly.
When mounting and reassembling the thermostat.
Important: Do NOT press in the center of the display
screen.
Battery:
The current time and day is kept for min. 60 days if mains
supply is off. All other settings are stored permanently.
Pic. 3
Pic. 4

DEVIreg™ Opti
11Installation Guide
5 Display Symbols
Top part main functionalities are to support user interface
through display and hold all the controller logic.
Display main functionalities are to show the current status
of the Thermostat and recognize the user actions from the
buttons. Display consists of different buttons, numbers and
symbols.
Nr. Type Description
1ON/OFF
button
2
Arrow Up /
Down button
3 Mode button
4 Timer button

DEVIreg™ Opti
Installation Guide12
Symbol indications
Symbol Description Symbol Description
Week Day Heating is ON
Time Display,
24 Hour Safety Lock
Floor
Temperature
Open Window
indication
Room
Temperature
Current Tem-
perature
Away Mode Comfort Tem-
perature
Timer Mode Economy
Temperature
Manual Mode Alarm/Error
Frost Protec-
tion Mode
Periode Symbol
at timer mode
The shorter line
indicates the
current period.

DEVIreg™ Opti
13Installation Guide
Interaction directly on thermostat
Function Button Description
Turn thermo-
stat on / off
Activate button:
Hold for 2 sec.
Thermostat switch on
and display current
temperature and other
settings
Setting of
different
modes
Activate button: Display cycles through
following modes:
Timer / Manual / Away /
Frost protection
Adjust
temperature
Up: activation button Increases active mode/
temporary set point
Down: activation
button
Decreases active mode/
temporary set point
Floor tem-
perature
Activate simultane-
ously buttons
Hold 8 sec.: Display shows
current floor temperature.
Floor temp.
icon appears.
From timer, manual, frost
mode

DEVIreg™ Opti
Installation Guide14
Safety lock
Activate simultane-
ously buttons
To Activate/Deactivate
safety lock, hold for 8 sec.
Safety lock
icon appears.
Factory
restore
Activate simultane-
ously buttons Turn thermostat OFF, hold
for 10 sec. 5 sec. count
down appears.
Setting timer
mode
Activate button Display cycles through
timer setting modes.
Activates in all modes.
To save energy, when no interaction from user for >20 sec.,
thermostat will go into a stand by mode, where currently
measured temperature is displayed continuously. Interaction
from user, by pushing any of the buttons, will reactivate the
display (On/Off button, push and hold for 2 sec.).
Error codes
When the error occurs, the heating is turned off. When error
is resolved the thermostat, in some cases, will require a
restart to start heating again.

DEVIreg™ Opti
15Installation Guide
Error type Nr. Description Solution
Floor Sensor
short circuited E1
Floor sensor is measuring
very high temperature
values.
Contact service
Floor Sensor
disconnect E2
Floor sensor is measuring
very low temperature
values.
Is floor sensor
connected?
Contact service
Room or Floor
Sensor short
circuited
E3 Sensor is measuring too
high temperature (>50°C).
Turn Off. Cool
down. If persist,
contact service.
Room or Floor
Sensor
disconnect
E4 Sensor is measuring too
low temperature (<0°C).
Turn Off and
On. If persist,
contact service.
Battery
missing
Battery is missing or needs
a replacement
Contact
service
6 Configuring - Start up
Setting time
When the thermostat is connected first time, it will open a
start up wizard (for further description see following pages).

DEVIreg™ Opti
Installation Guide16
When unit is On (any of the modes) press Timer
button (once), "hh:mm" will start to blink.
Adjust the "hh" value with Up & Down buttons,
than when reached the desired value press
Timer button to move to "mm" (minutes).
Set the "mm" value with Up & Down buttons,
than when reached the desired value press
Timer button to move to Weekday.
Adjust the Weekday with Up & Down buttons.
Press the Timer button again, to confirm.
Timer programming
The thermostat comes with 3 preset programs (P1, P2 and
P3). Default is set to program P3. Programs can be changed
with Up and Down arrows (P3->P2->P1).
The values in the programs (time and temperature) can
be adjusted, see the following page. For preset program
settings, see the following table:

DEVIreg™ Opti
17Installation Guide
Programs
P1
Working
day
P2
Days at
home
P3
Mon-Fri: P1
Sat - Sun: P2
Days MON to
SUN
MON to
SUN
MON to
FRI
SAT to
SUN
Morning 06:00-
08:00 Comfort Comfort Comfort Comfort
Day 08:00-
16:00 Economy Comfort Economy Comfort
Evening 16:00-
22:30 Comfort Comfort Comfort Comfort
Night 22:30-
06:00 Economy Economy Economy Economy
Room & Floor Floor only
Comfort default temperature 21°C 27°C
Economy default temperature 17°C 20°C
Adjusting timer programming:
When in timer mode, to adjust current program, press and
hold timer button for 2 sec. When timer program name
(i.e. P3) appears, press timer button again, to change the

DEVIreg™ Opti
Installation Guide18
Period indicator:
P3:
P2:
settings of this program. First, hour and minute settings for
all periods (for preset values see table on previous page),
than temperatures for comfort and economy periods can
be adjusted, with help of up and down buttons.
Push timer button , for going to next value/period. When
programming is finished, operating screen will appear.
- Comfort
- Economy
- Comfort
- Economy

DEVIreg™ Opti
19Installation Guide
The shorter line indicates, the current period (comfort or
economy), corresponding to the time setting of the watch.
Note:
The floor and room takes time to heat up. Start comfort
heating period before the time, you need them warm.
Away mode:
Is set by pushing mode button , until
away icon appears. Push the timer
button , for 2 sec., to choose the number
of away days (between 0-99 days), with up
/ down buttons . Start is at "0" days and it can be
increased by pushing the Up arrow button.
Push timer button again to adjust the away temperature,
can be set between 5-20°C, with up or down arrows.
The last set value is used. No confirmation needed. Mode will
end if user is pushing any button (Off button, turns the unit
off). Away icon will disappear from screen.

DEVIreg™ Opti
Installation Guide20
Frost protection:
Is set by pushing until frost protection icon appears.
Desired temperature for frost protection can be set in
installer menu. Value is between 5-9°C.
If the current room temperature is below the set frost protec-
tion temperature, the heating ON icon will appear, and
the thermostat will start heating.
Installer menu:
Settings described in next point (Start up wizard) will be
available, uppon accessing this menu.
It's strongly advised: ONLY for the trained installer, to access
this menu, as changes of settings can lead into damage of a
floor surface.
It can be accessed from OFF state (thermostat is turned off),
by holding the timer button for 10 sec.
The mode button is used for cycling through the
parameters (starting at 1), up & down buttons, for