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