Sygonix 2250409 User manual

Safety instructions
Read the operating instructions
carefully and especially observe
the safety information. If you do
not follow the safety instructions
and information on proper han-
dling in this manual, we assume
no liability for any resulting per-
sonal injury or damage to prop-
erty. Such cases will invalidate
the warranty/guarantee.
a) General information
• The device is not a toy. Keep it out of the
reach of children and pets.
• Do not leave packaging material lying
around carelessly. This may become dan-
gerous playing material for children.
• Protect the appliance from extreme tem-
peratures, direct sunlight, strong jolts,
high humidity, moisture, ammable gases,
steam and solvents.
• Do not place the product under any me-
chanical stress.
• If it is no longer possible to operate the
product safely, take it out of operation and
protect it from any accidental use. Safe
operation can no longer be guaranteed if
the product:
- is visibly damaged,
- is no longer working properly,
- has been stored for extended periods in
poor ambient conditions or
- has been subjected to any serious trans-
port-related stresses.
• Please handle the product carefully. Jolts,
impacts or a fall even from a low height can
damage the product.
• Consult an expert when in doubt about the
operation, safety or connection of the ap-
pliance.
• If you have questions which remain un-
answered by these operating instructions,
contact our technical support service or
other technical personnel.
b) Installation / connection
Caution, safety hazard!
The product should only be installed by
people with relevant electrical knowledge
and experience! *)
If it is not installed properly, you risk:
• your own life
• the life of user of the electrical device
If it is not installed properly, you risk severe
damage to property, e.g. by re.
You face the risk of personal liability for per-
sonal injury and material damage.
Always consult an electrician!
*) Technical knowledge required to perform
the installation:
For the installation, the following specialist
knowledge is required in particular:
• The “Five safety rules”: Disconnect from
the mains; protect against accidental
switch-on; ensure there is no voltage;
earth and short-circuit; cover or protect
adjacent live parts
• Use of suitable tools, measuring devices
and personal protective equipment, where
necessary
• Analysis of measurement results
• Use of electrical installation materials to
meet the requirements for disconnection
• IP protection ratings
• Installation of electrical installation materi-
als
• Type of power supply (TN system, IT
system, TT system) and the correspond-
ing connection criteria (classic earthing,
protective earthing, necessary additional
measures etc.)
If you are not a professional, do not do it your-
self, have it performed by a specialist.
Further warnings:
• The construction of the product corre-
sponds to the protection-class II (double
or reinforced isolation). Ensure that the in-
sulation of the housing is neither damaged
nor destroyed.
• During installation, all poles must be dis-
connected from the mains voltage, e.g.,
via RCD. There must be an appropriately
rated fuse or circuit breaker between the
RCD and the product.
• The device must be voltage-free during
installation and connection. Furthermore,
turn off the automatic circuit breaker and
the earth leakage circuit breaker to discon-
nect all the poles from the mains voltage.
Secure it against unauthorised reconnec-
tion, e.g., with a warning sign. Check to
make sure there is no voltage with a suit-
able measuring instrument (e.g., a digital
multimeter).
• Never connect the product to the power
supply immediately after it has been trans-
ferred from a cold room into a warm one
(e.g., during transport). The condensation
that forms might destroy the device. More-
over, there is danger of electric shock!
• Allow the product to reach room tempera-
ture. Wait until the condensation has evap-
orated. This might take several hours. Only
after this, should it be installed, connected
to the mains supply and put into use.
• Do not use the product in rooms with ad-
verse environmental conditions, where
combustible gases, vapours or dust are
or may be present! There is a danger of
explosion!
c) Ingress protection
• This device has an IP20 ingress protection
rating and is suitable for dry rooms.
• There is protection against touching live
components and ingress from foreign par-
ticles >12.5 mm.
• There is no protection against water, com-
bustible gases, and vapours.
Operating Instructions
Heating Thermostat with Sensor
Item No. 2250409
Intended use
The heating thermostat is intended for temperature control in conjunction with an electric heat-
er. The product operates under the mains voltage; a mains operated load can be connected
and switched on or off by temperature control.
It is equipped with an internal and external sensor (probe). The external sensor can be used to
measure the temperature in a different location to the thermostat, such as on the oor with an
electric oor heating system.
A keypad lock can be activated to protect against incorrect operation, and a backup (non-
removable) capacitor supplied with the unit serves to preserve data in case of power failure.
This device has an IP20 ingress protection rating and is suitable for dry rooms and indoor use.
Do not use it outdoors. Contact with moisture, e.g. in bathrooms, must be avoided under all
circumstances.
For safety and approval purposes, you must not rebuild and/or modify this product. If you use
the product for purposes other than those described above, the product may be damaged. In
addition, improper use can result in short circuits, res, electric shocks or other hazards. Read
the instructions carefully and store them in a safe place. Make this product available to third
parties only together with its operating instructions.
This product complies with the statutory national and European requirements. All company
names and product names are trademarks of their respective owners. All rights reserved.
Delivery content
• Thermostat
• 2x mounting screws
• External sensor
• Operating instructions
Up-to-date operating instructions
Download the latest operating instructions at www.conrad.com/downloads or
scan the QR code shown. Follow the instructions on the website.
Explanation of symbols
The symbol with the lightning in the triangle is used if there is a risk to your health,
e.g. due to an electric shock.
The symbol with the exclamation mark in the triangle is used to indicate important
information in these operating instructions. Always read this information carefully.
The arrow symbol indicates special information and advice on operation.
The product is only intended to be installed and used in dry indoor rooms; it must not
get damp or wet.
The product is designed according to protection Class II (reinforced or double insu-
lation, protective insulation).
Observe the operating instructions!

Installation
E
D
B
A
F
C
Load
1 2 43
N L
5
6
NTC
L1 N1
Load
1. To remove the front panel, slide the front part with the display upwards (A). The two parts
are connected by a ribbon cable (B).
The ribbon cable can be disconnected if needed. Be careful not to damage it.
2. On the back of the wall thermostat (C) there are 6 terminals for connecting the:
- The main power supply
- Electrical load
- External NTC temperature sensor
• Connect the mains power supply to the corresponding inputs 3 and 4.
• Connect the load (e.g., an electric radiator or electric oor heating) to corresponding outputs
1 and 2.
If the load requires a protective earth connection it must be connected separately.
The thermostat complies with protection class II and does not by itself require a
protective earth connection.
3. If using an external temperature sensor (probe), it should be connected to terminals 5 and 6
(C). There is no polarity so it does not matter which way you connect the wires.
When laying out the connection cable, make sure it is protected from sharp edges.
Never fasten the connection cable with nails, screws or similar.
4. Insert the wall thermostat into the ush-mounted/ surface-mounted box and fasten it using
the included screws (D).
Make sure that the cables are not damaged when inserting the wall thermostat into
the ush-mounted/surface-mounted box.
5. Reconnect the ribbon cable if needed. It can only be connected on way, do not use force
when plugging in!
6. Align the front panel (E) and push it down (F). It should lock into place.
7. Switch on the voltage supply.
8. The wall thermostat is now operational.
Operating elements
a) Display
1
2
3
4
5
6
7
8
10
11
12
9
1 Six period program
2 External sensor active
3 Automatic mode
4 Manual mode
5 Holiday mode
6 Time
7 Weekday (1 = Monday, 7 = Sunday)
8 Target temperature setting
9 Open window (activated)
10 Measured temperature
(internal or external probe)
11 Keypad lock
12 Heating
b) Icons
Icon Description Icon Description
Visible when the keypad is locked.
Disappears when keypad is unlocked.
Auto mode: Weekly schedule program
is running.
Visible when heating is ON.
Disappears when heating is OFF. Manual mode.
The open window icon shows if it has
been activated.
Auto mode temporary manual
override.
External NTC sensor (probe)
temperature shown.
Advanced setting "N2” should be set:
"Advanced settings" → "BN" → "N2".
Holiday mode: Set the number of days
you will be away and a temperature.
c) Button functions
Button Function
Power ON / OFF.
• Press to switch between “auto” and “manual” mode.
• Advanced options setting: Turn power off, then press and hold 3 - 5 sec.
• Programmable setting: Turn power on, then press and hold 3 - 5 sec.
• With the power off, press and hold for approx. 3 - 5 secs to enter general settings.
• Conrms a setting.
• During normal operation press to set the time and day of week.
• During normal operation, press and hold 3 - 5 sec to enter “holiday mode” settings..
• With the power off, press and hold for approx. 3 - 5 secs to enter advanced settings.
• Press to increase a value.
• Press and hold to display the temperature measured by the external temperature sensor.
- External sensor should be connected.
- Advanced setting “N3” should be enabled. Refer to "Advanced settings" → "BN" →
"N3".
• Press to temporarily override “auto” mode and increase the temperature (auto settings
will be retained when exiting manual override).
• Press to decrease value.
• Press and hold to activate/deactivate the keypad lock.
• Press to temporarily override “auto” mode and increase the temperature (auto settings
will be retained when exiting manual override).

Operation
a) Power ON/OFF
• Press the button to switch the wall thermostat ON or OFF.
• When the thermostat is switched off, the display goes out and no temperature control takes
place.
b) Set time and weekday
The wall thermostat must rst be on and in normal operating mode (exit "System set-
tings"). Settings will exit and be saved if no keys are pressed for approx. 10 seconds.
1. Press and the minutes will ash.
- Press or to adjust values.
- Press to save the setting.
2. Adjust the hours:
- Press or to adjust values.
- Press to save the setting.
3. Adjust the day of week (1 = Monday... 7 = Sunday).
- Press or to adjust values.
- Press to save the setting.
4. Settings will be saved and the thermostat will returns to normal operation.
c) Switch between automatic and manual mode
The wall thermostat must rst be on and in normal operating mode (exit "System
settings").
1. Press to switch between automatic and manual mode .
- Automatic mode: The temperature settings will be based the active program preset.
- Manual mode: The temperature can be set manually using the or buttons.
d) Manual override automatic mode
The wall thermostat must rst be on and in normal operating mode (exit "System
settings").
• If a different temperature is temporarily needed during automatic mode, you can set it using
the or buttons. Both the and symbols will show on the display.
• The manual override remains active until the automatic mode setting reaches the next time
interval. When that happens:
- The manual override will be disabled the thermostat will return to automatic mode.
- The symbol will disappear.
e) Keypad lock
• Press and hold for approx. 5 seconds to turn the parental control lock ON / OFF.
• The lock symbol will show to indicate that the parental lock is ON.
Depending on the "System settings" → "General" → “A3”, two different parental
control locks are possible:
0 = All buttons except the power button will be locked.
1 = All buttons will be locked.
Holiday mode
The wall thermostat must rst be on and in normal operating mode (exit "System
settings"). Use holiday mode to set a time and temperature for the days you will be
away.
Activate
1. Press and hold for approx. 3 - 5 seconds until the symbol shows on the display.
2. Turn holiday mode "on".
- Press or to adjust values.
- Press to save the setting.
3. Set the number of days you will be away "1 - 30".
- Press or to adjust values.
- Press to save the setting.
4. Set the temperature.
- Press or to adjust values.
- Press to save the setting.
5. The symbol shows on the display to indicate that holiday mode is active.
Exit holiday mode
Press to exit holiday mode and return to manual or auto mode.
Weekly schedule program
a) Overview
6 time periods
You can congure temperature settings for 6 time periods throughout the day. An icon will
indicate which time period is active.
Default times and temperatures for each period are shown below:
1: Wake up 2: Outdoor 3: Home 4: Outdoor 5: Home 6: Sleep
06:00 08:00 11:30 13:30 17:00 22:00
20 °C 15 °C 15 °C 15 °C 15 °C 15 °C
Weekday intervals
Weekday intervals are based on the selected program. Refer to section "System
settings" → "General" → “A6".
Program Icon Weekday interval
0 5 days same / 2 days same
1 6 days same / 1 day same
27 days same
b) Program a weekly schedule
General setting
1. Press to turn the power OFF.
2. Press and hold for approx. 3 - 5 secs to enter settings mode.
3. Press SET to toggle to setting "A6".
4. Press / to select a program (0, 1, 2).
5. Press to exit settings mode. Settings will also be saved if no buttons are pressed for
approx. 10 sec.
Program a schedule
1. Press power to turn the power ON.
2. If the backlight is off, press to turn it on, then press and hold for approx. 3 - 5 secs
to enter settings mode.
The rst period icon "1: Wake up" will show, and the time will ash.
3. Set the time (hours: minutes)
- Press or to adjust values.
- Press to save and set the next value.
4. Set the temperature
- Press or to adjust values.
- Press to save and set the next period
The next period icon "2: Outdoor" will show, and the time will ash.
5. Repeat steps 3 and 4 to set all 6 periods for the day.
6. Settings will be saved if no buttons are pressed for approx. 10 sec.
c) Switch programmed schedule ON/OFF
• Press to switch the programmed schedule ON or OFF.
• The icon appears when the programmed schedule is ON.
System settings and defaults
Adjusting system settings may cause your thermostat to behave unexpectedly. Read the in-
structions carefully before adjusting any settings. Refer to section "Troubleshooting" for further
information.
a) General
1. Press to turn the power OFF.
2. Press and hold for approx. 3 - 5 secs to enter general settings mode.
- Press to toggle through settings "A1" to "AE".
- Press / to adjust values.
3. Press to exit settings mode. Settings will also be saved if no buttons are pressed for
approx. 10 sec.
Description Settings / defaults
A1 Temperature offset Setting range: -9 to +9 °C; Default: Measured temperature ±0.5 °C
A2 Switching differential
(hysteresis)
Setting range: 0.5 to 5 °C; Default: 1 °C
Example: For a setting of 1 °C and the thermostat temperature set to
20 °C, the thermostat will switch heating on at 19 °C and off at 21 °C.

This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com). All rights
including translation reserved. Reproduction by any method, e.g. photocopy, microlming, or the capture in electronic data
processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited. This publication
represent the technical status at the time of printing.
Copyright 2021 by Conrad Electronic SE. *2250409_v5_0121_02_dh_m_en
Description Settings / defaults
A3 Keypad lock
Settings:
0 = All buttons except the power button will be locked; 1 = All
buttons locked
Default: 0
A4 Behaviour after power
failure
Settings:
0 = Return to previous function; 1 = Power OFF; 2 = Power ON
Default: 0
A5 Backlight time Settings: 5 to 30 secs; Default: 20 secs
A6 Weekly program
settings
The correct weekday must be set for the program to coincide with the
weekend. See section "Operation" → "Set time and weekday".
• Settings: 0 = 5 days / 2 days, 1 = 6 days / 1 day, 2 = 7 days
• Default: 0 = 5 days (Mon-Fri) / 2 days (Sat/Sun).
A7 Min. temperature. Set the lowest selectable temperature.
Setting range: 1 to 10 °C; Default: 5 °C
A8 Max. temperature Set the max. selectable temperature.
Setting range: 20 to 70 °C; Default: 35 °C
A9 Low temperature
protection
Frost protection: The output is activated if the temperature measured
by the sensor falls below the value set here.
• Setting range: 1 to 10 °C; Default: 5 °C
• Advanced setting:
- N1 or N3 (internal sensor)
- N2 (external sensor)
• Cancel setting: Press until "--" shows on the display.
AA
High temperature
protection (external
sensor only)
It is to prevent the oor temperature from getting too high, for example.
If the window is open and the room temperature cannot heat up but
the oor heating is working and increasing to compensate.
• Advanced setting: N3 only
• Settings range: 20 to 70 °C; Default: 45 °C
• Cancel setting Press until "--" shows on the display.
Example: If set to 50 °C and the external (oor) sensor detects 50 °C,
the thermostat will switch the output off.
AB
High temperature
protection / difference
setting (external
sensor)
Setting range: 1 to 9 °C; Default: 2 °C
Example: "AA" limit set to 45°C, and "AB" is set to 2 °C. If the
temperature rises to 45°C the output is switched off. If the temperature
drops to 43°C the output is switched on.This only works if the indoor
temperature is lower than set temperature.
AC Ventilation mode
(open window)
If this setting is active, the thermostat will detect if a window is open
and switch the output (heater) off.
• Setting range: 10 - 20 °C, when display is / Default: OFF "--".
• Cancel Setting: Press until "--" shows on the display.
AD Ventilation mode
working time Setting range: 10 - 20 minutes; Default: 10 mins
AE Reset all settings to
defaults
Press and hold OK for approx. 3 - 5 secs until all segments show on
the display. The power will turn off when all settings have been reset.
b) Advanced
1. Press to turn the power OFF.
2. Press and hold for approx. 3 - 5 secs to enter advanced settings mode.
- Press to toggle through settings "BN" → "BC" → "BO".
- Press / to adjust values.
3. Settings will be saved if no buttons are pressed for approx. 10 sec.
Description Settings / defaults
BN Sensor selection
Settings:
• N1: Internal sensor controls the temperature.
• N2: External sensor controls the temperature.
• N3: Internal sensor controls the temperature. When N3 is enabled, the
external sensor is used as the limiting sensor.
For all of the above, if the maximum temperature is exceeded,
the output is switched off.
Default: N1
BC Descaling
Settings: 0 = closed, 1 = open; Default: 0 (closed)
These settings are not applicable to this thermostat (Item no.
2250409). Changing these settings will have no effect.
BO Program data Cannot be changed.
Error Codes
An error code will show if there is a problem with the internal or external sensor. When this
happens the thermostat will stop heating until the cause of the error is removed.
Code Description Suggestion
E1 Internal sensor error • Turn the power off and contact technical support service or
other technical personnel.
E2 External sensor error
• Check the external sensor connection.
• Turn the power off and contact technical support service or
other technical personnel.
Care and cleaning
• The product is maintenance free.
• Use a dry, soft, lint-free cloth to wipe the panel. Do not use aggressive cleaning agents, as
these can cause discolouration.
Activate the keypad lock when wiping the front panel. Accidentally pressing the sen-
sor keys can cause unintended settings.
Disposal
Electronic devices are recyclable waste and must not be disposed of in the house-
hold waste. At the end of its service life, dispose of the product in accordance with
applicable regulatory guidelines.
You thus fulll your statutory obligations and contribute to the protection of the envi-
ronment.
Technical data
a) General
Input voltage / current................... 90 - 240 V/AC, 50/60 Hz
Max. switching power ................... 3000 W (resistive load)
2000 W (inductive load)
Contact load capacity ................... 16 A, 250 V
Memory backup............................ Stored on non-removable capacitor
Time: approx. 7 days
Settings: < 10 years
Surface mounting ......................... Back box sizes: 60 mm, 80 mm
Display accuracy .......................... 0.5 ºC
Sensor .......................................... 1x internal, 1x external (probe)
External sensor (probe)................ NTC (10 k) 1 %
Ingress protection......................... IP20
Display size (W x H) ..................... 63.8 x 51.6 mm
Operating/Storage conditions....... 1 to 70 ºC, <85 % RH (non-condensing)
Probe wire length.......................... 2.5 m
Dimensions (W x H x D) ............... 86 x 86 x 40 mm
Weight .......................................... 170 g