terneo sneg + OSA Smart Control of Heating User Manual
- June 3, 2024
- terneo
Table of Contents
smart control of heating
sneg + OSA
Technical data sheet and
installation and operation manual
sneg + OSA Smart Control of Heating
The terneo sneg + OSA thermostat is designed to organize a snow and ice
melting system that ensures the safety of movement for people and vehicles in
winter, and allows you not to use salt and snow removal devices.
When the air temperature falls within the specified range, the system starts
checking for precipitation on the OSA sensor surface. When moisture is
detected, the system is turned on and off when the surface of the
precipitation sensor is cleaned and the specified post-heating time passes.
Post-heating is necessary to completely remove precipitation from the heated
surface.
To melt snow and avoid the formation of ice crust on the surface of the
sensitive OSA contacts, internal heating is provided in the sensor. It turns
on every hour for 20 minutes and turns off for 40 minutes until moisture is
detected.
The presence of precipitation is determined by the moisture resistance on
sensitive contacts of the precipitation sensor and is displayed on the screen
in relative units. The greater is the amount of moisture between the contacts
of the precipitation sensor, the lower is the resistance. If moisture is
detected (resistance below 999 units), the internal heating of the
precipitation sensor will work constantly. In this case, if the resistance
decreases to the set limit of 200 units and lower (adjustable), heating will
turn on. As soon as the resistance rises above the set limit of 200 units, the
postheating period will start.
IN THE ABSENCE OF A PRECIPITATION SENSOR, heating is turned on when the air
temperature falls within the specified range.
IN THE BOX
| Thermostat | 1 piece |
|---|---|
| Temperature sensor with connected sensor | 1 piece |
| Precipitation sensor with connected sensor | 1 piece |
| Technical data sheet and installation and operation manual and warranty card |
1 piece
The packing box| 1 piece
Before the installation and operation of the device, PLEASE READ BY THE END OF THIS DOCUMENT. This will help to avoid possible danger, mistakes and misunder standings.
TECHNICAL DATA
Тhermostat terneo sneg
Adjustment range| upper.: 0…10 °С
lower: –20…–1 °С
---|---
Maximum load current| 16 А
Rated load capacity| 3 000 АV
Input voltage| 230 V ± 10 %
Weight in the complete set| 0,145 kg ±10 %
Overall dimensions| 54 × 90 × 66 mm
Temperature sensor| NTC thermo-resistor 10 kOhm at 25 °C (R10)
The length of the sensor connected cable| 4 m
Number combinations under heat, at least| 50 000 cycles
Number of combinations without heating, no less than| 20 000 000 cycles
Degree of protection GOST14254| IР20
Range of measured temperatures| –30…+75 °С
Precipitation sensor OSA
| Ambient temperature | –50…+70 °С |
|---|---|
| Measured temperature range | –30…+75 °С |
| The length of the sensor connected cable | 10 m |
| Internal heating capacity | 5 W ±5 % |
| Internal temperature sensor | NTC thermo-resistor 10 kOhm at 25 °C (R10) |
| Degree of protection GOST14254 | IР68 |
| Dimensions: diameter x height | 60 х 30 mm |
| Weight in the complete set | 0,72 kg ± 10 % |
WIRING
Thermo supports two types of sensors: analog (R10) or digital (D18) air
temperature sensor.
Analog sensor is connected to terminals 1 and 2. Wires colors are of no
importance.
Digital sensor is connected to terminal 1 using white wire and to terminal 2
using blue wire. If «OС» message appears on the air temperature sensor
screen, try to connect the opposite. If the thermo stat does not see the
sensor at both attempts, contact the Service Center.
The supply voltage (230 V ±10 %, 50 Hz) is applied to terminals 9 (phase, L)
and 10 (zero, N).
To control the load, terminals 7 and 8 (relay) are used. The relay used in the
thermo stat has a potential-free contact normally open contact, ie the relay
contacts do not have a
galvanic connection with the power supply circuits.
The precipitation sensor is connected to terminals 3-6. The green wire
(precipitation temperature sensor) is connected to terminal 3, the blue
(moisture sensor) to terminal 4, brown (common) to terminal 5 and orange
(heater) to terminal 6.
The sensor uses a duplexed system. In the event of a failure in the
precipitation sensor, use redundant wires of the appropriate color with a
white stripe (see page 14).
DO NOT CONNECT TWO GREEN OR TWO ORANGE wires (main and standby) to terminals 3 and 6 at the same time. This can damage the thermostat or cause it to malfunction.
INSTALLATION
The thermo stat is designed for indoor installation. The ingress risk of
moisture or liquid into the place of installation must be minimized.
The ambient temperature during installation must be between –5…+ 45 °C. The
installation height of the thermostat should be in the range 0,5…1,7 m above
the floor level.
The thermostat is installed in a special box, which allows conducting easy
installation and operation. Cabinet should be equipped with standard mounting
rail 35 mm width (DIN- rail). The appliance takes in width of three standard
modules on 18 mm.
The thermostat is installed and activated after installation and inspection of
the voltage.
To protect against short-circuit in the load circuit the circuit breaker (CB)
has to be installed before installing the thermostat. The circuit breaker is
installed in the gap of phase conductor, as shown in the Wiring 1.
To protect a people against electric shock leakage is installed the SSD
(safety shutdown device). For working of SSD the heating cable screen must be
grounded (connected to the protective conductor PE) or, if there is two-wire
network, it is necessary to make protective neutral earthing. That is to
connect the screen to a zero before SSF.
The thermostat terminals are designed for a wire with section not more than
2,5². To reduce the mm mechanical loads on the terminals it is desirable to
use a soft wire. The ends of the wires must be cleaned and crimped with
ferrules with insulation. The wires are tightened in the terminals using a
screwdriver with a blade width no more than 3 mm. The screwdriver with a blade
width more than 3 mm can cause mechanical damage to the terminals. This may
result in the loss of right for warranty.
To increase the service life of the relay, it is necessary for the thermostat
to switch the current not more than 2/3 of the maximum current specified in
the passport. Otherwise, use a contactor designed for this current (wiring 2).
The contactor is also used to control the 3-phase load. Wiring 3 shows the
possible option of connecting a contactor for controlling a 3-phase load with
a 230 V coil, and wiring 4 — with a 400 V coil.
WARRANTY TERMS
The warranty for terneo devices is valid for 36 months from the date of sale,
provided that the instructions are followed. The warranty period for products
without a warranty certificate is counted from the date of production.
If your device is not working properly, we recommend that you first read the
section «Possible problems». If you cannot find an answer, contact Service
Center. In most cases, these actions resolve all issues. If you continue to
have issues with the device, please send it to a Service Center or to the
store where you purchased the device. If your device is defective due to our
fault, we will repair or replace it under warranty within 14 business days.
Please see the full text of the warranty and the data you need to send to your
Service Center on the website https://www.ds-electronics.com.ua/en/. If
you have a warranty case, please, contact the General distributor in your
area.
SERVICE CENTER CONTACT:
+38 (091) 481-91-81
WhatsApp Viber Telegram
[email protected]
WARRANTY CARD
| 
| 
---|---|---
Air temperature sensor installation
The air temperature sensor is installed on the wall or under the roof edge so
that it is not exposed to sunshine, rain and snow, and there is the
possibility of unobstructed replacement in case of malfunction or damage (Fig.
1). If necessary, it is allowed to shorten and increase the sensor connecting
wires (separate cable not more than 40 m with a cross section of more than
0,75 mm ). The power wires should not be located near the sensor connection
wire — they can cause interference.
Installation of the precipitation sensor
The surface of the sensor must always be placed horizontally during
installation, the contacts for determining the precipitation (sensor) must be
directed upwards. If necessary, the sensor cable can be extended. For example,
using an intermediate junction box or simple elongation with sealing
connections, for example, shrink tubing.
The sensor cable is pulled through the mounting tube to the installation site
of the thermostat. Do not install the sensor cable close to power cables, they
may interfere. When choosing the location for installation of the
precipitation sensor in the heated surface of the soil, use these criteria:
— the greatest shadow during the day;
— the greatest amount of precipitation (where snow appears first of all and
wind sweeps snowdrifts).
Rules for mounting the sensor:
— place the sensor in a concrete base, on the same level as the heated surface
(Figure 2). The base under the sensor mounting location must be firm. This is
to ensure that the sensor is not forced into the ground under heavy load from
above; the precipitation sensor should be located
— inside the heated surface and at least 1 m from its edge (Figure 3);
— sensitive sensor element should be located at the top.
In the case of asphalt pavement, the mounting pipe must be metal (it allows to
withstand high temperatures). When laying asphalt, do not expose the sensor
and cable to high
temperatures. Use a wooden or similar plug instead of the sensor until it
cools down completely.
Take care of sealing the sensor’s side joint with a coating for reliable
drainage of the melting water onto the sensor surface. Otherwise, it will flow
past and soak into the soil.
AVOID CLOGGING THE SENSOR SURFACE
with leaves, gravel and other things that can distort the data of
precipitation.
| 
---|---
| 
EXPLOITATION
Use the middle button «≡» to navigate through the menu. Use the «+» and «–»
buttons to change the parameters. After pressing the button for the first time
the parameter will flash, after pressing it for the second time the parameter
will change. In 3 sec after the button was pressed the indicator will return
to displaying the system voltage.
Switching on / switching off
To turn on, apply the voltage to terminals 9, 10. Within 3 seconds «888» will
be displayed on the screen.
Then the temperature of the air and precipitation sensors will be indicated.
The work of the load (of the heating system) will be signaled by a red
indicator light.
| In the absence of moisture on the surface of the precipitation sensor
(resistance at the sensor terminals above 999 units), the thermoregulator will
output «drY» — dry.
---|---
Selection of temperature range
(factory settings upper limit 5 °С, lower – 10 °С )
| To view the upper temperature limit, press briefly «+» , the lower limit —
«–» . The flashing limit value can be changed with the buttons «+» «–» or.
---|---
| 3 seconds after the last pressing of the buttons or short pressing of the
button «≡», the thermostat switches to the normal operation mode.
Manual activation of heating (factory settings 3 h)
Press the middle button once to force the heating ON / OFF as well as to reset
the post-heating operation.
| After activation, the middle screen will display the remaining time before
the heating is completed. Using the
«+» and «–» buttons,you can change the heating time in the range of 0,5 – 9
hours, with 0,5 hour increments.
---|---
Start of precipitation control depending on the t entrance to the limits
| 
---|---
Table 1. FUNCTION MENU
| Menu section | Press button «≡» | Screen | Notes |
|---|---|---|---|
| Post heat time — post heat (factory setting 2 h, range 0,5 –9 h, step 0,1h ) | |||
| Hold 3 sec | | After the precipitation sensor detects the
absence of moisture on its surface,the heating will continue for a period of
post-heating to completely remove the precipitation.
Air sensor temperature correction — correction
(factory setting , 0 range ±5 °С, step 0,1 °С)| Press 1 time| | If you need to
make a correction to the air
sensor readings on the thermo screen.
Resistance humidity (factory setting 200 units, range 10–990, step 10)| Press
2 times| | Determined by the level of resistance, which
is formed on the precipitation sensor surface.
Moisture timeout — time h umidity ( actory setting 36 h, 1–240, range step
1)| Press 3 times| | This is the maximum time at which
the thermostat attempts to drain the surface
of the precipitation sensor.
Hysteresis (factory setting 1, range 0,1…10 °С, step — 0,1 °С) Moisture check
on the precipitation sensor is made in the given temperature range zone with
respect to hysteresis.| Press 4 timas| | This is the difference between the
temperature
of load switch on/off. Less value of hysteresis
allows you to more accurately keep the temperature, more — save on energy
consumption and increase relay service life
due to reduction of the number of load switches (see Fig. 5-6).
Reset to factory settings| Hold 30 sec| | After releasing the buttons, the
thermostat
will reset all settings to the factory settings.
Service Information
| Menu section | Press button «≡» | Screen | Notes |
|---|
Total load running time in hours
view only| Hold 6 sec| | Service information. The example shows
8 hours 30 minutes of load operation.
View firmware version| Hold 12 sec| | The manufacturer keeps the right to
modify
the firmware to improve characteristics of the thermostat.
Load relay switch counter| Hold 15 sec| |
Thermostat switch counter| Hold 18 seс| |
POSSIBLE PROBLEMS, CAUSES AND WAYS TO OVERCOME THEM
At turning on neither indicator nor screen do not shine
Possible cause: there is no power supply voltage.
It is necessary to: ensure supply voltage presence. If there is voltage, then
please contact the Service Center.
The load does not work according to the settings, the upper screen displays
«ouh»
| The temperature inside the housing exceeded 80 °C, the
protection from internal overheat worked.
Possible cause: internal overheating of the thermostat, which can lead to:
poor contact in the terminals of the thermostat, high ambient temperature,
exceeding the power of the switched load, or the cross section of the wires
for connection is incorrectly selected.
---|---
It is necessary to: check the tightening of power wires in the terminals of
the thermostat, make sure that the power of the switched load does not exceed
the permissible one, the cross section of the wires for connection is selected
correctly.
Features of the protection against internal overheating: when the temperature
inside the housing drops below 6 °C, the thermostat will resume operation.
When the protection is triggered more than 5 times in a row, the thermostat is
blocked until the temperature inside the housing drops below 65 °C and one of
the buttons is pressed 5.
The upper screen displays «Ert» every 5 seconds
| Possible cause: a break or short circuit of the internal overheating
sensor. Internal overheatingis not monitored.
It is necessary to: send the thermostat to the service center. Otherwise,
overheating control will not be carried out.
---|---
Load does not work according to settings, the upper screen displays «OC» or «SC»
| open circut — air sensor circuit break
---|---
| short circut — short circuit of the air sensor circuit
Possible cause: incorrect connection, damage of the temperature sensor
circuit, or temperature is beyond the measured limits (see Techn. data).
It is necessary to: check the correct connection, the temperature sensor
circuit, the absence of damage to the sensor connecting wire, the absence of
closely passing power wires. Make sure that the temperature does not exceed
the measured limits. If the problem persists, contact the Service Center.
Operation of the thermostat in case of damage to the air temperature sensor.
The load is turned on in the presence of moisture and the temperature of the
precipitation sensor within limits: upper 3… 10 °С, lower – – 20… 1 °С. The
lower temperature limit is controlled when the heating of the precipitation
sensor is off. Internal heating in the precipitation sensor is turned on every
hour for 20 minutes and is turned off for 40 minutes until moisture is
detected.
Precipitation is not determined, the middle screen displays «OC» or «SC»,
heating of the precipitation sensor does not work
| open circut — drop of precipitation sensor circuit
---|---
| short circut — short circuit of precipitation sensor circuit
Possible cause: improper connection, damage to the precipitation sensor
circuit or contamination.
It is necessary to: check the correctness of connection, the circuit of the
precipitation sensor, the absence of damage to the connecting wire of the
sensor, the absence of close power wires. Make sure that there are no
contaminants on the sensor surface. Connect the redundant blue-white wire (see
Fig. 7). If the problem cannot be resolved, contact the Service Center,
otherwise the thermostat will continue without detecting moisture.
Heating of precipitation sensor does not work constantly when precipitation
is detected, the bottom screen displays «OC» or «SC»
| open circut — break of the temperature sensor circuit in the precipitation
sensor
---|---
| short circut — short circuit of the temperature sensor circuit in the
precipitation sensor
Possible cause: incorrect connection of the precipitation sensor, damage to
the sensor circuit or temperature is beyond the measured limits (see Techn.
data).
It is necessary to: check the precipitation sensor and the integrity of its
cable. Connect the backup internal temperature sensor — green and white wire
(see Fig. 7).
If the problem persists, contact the Service Center. Thermostat operation in
case of temperature sensor damage in precipitation sensor. Heating of the
precipitation sensor will be turned on for 20 minutes every hour. The load
will be turned on when there is moisture and air temperature within the
specified limits.
Every 5 seconds the bottom screen displays «Err», the load is working, the
heating of the precipitation sensor is not working
| Cause: break of the heater of the precipitation sensor.
It is necessary to: check the precipitation sensor and the integrity of its
cable. Connect the backup heater orange-white wire (see Fig. 7). If the
problem persists, contact the Service Center.
---|---
Operation of the thermostat in case of damage to the heater of precipitation
sensor. Damage is determined if it is impossible to heat the precipitation
sensor to 3 °С for more than 1 hour. Then the thermostat monitors the presence
of moisture without the participation of internal heating and turns on the
load in the presence of humidity and air temperature within the established
limits. To clear the error, use manual heating control or reset the thermostat
by turning on/off the power.
The middle screen displays «Err», the load and heating of the precipitation
sensor do not work
| Cause: the precipitation sensor detects the presence of moisture in time
more than set in the «Moisture Timeout» (see Tab. 1), which can be caused by
contamination of the surface of the precipitation sensor.
---|---
It is necessary to : check and clean the surface of the precipitation sensor.
To clear the error, use manual heating control or reset the thermostat by
turning on / off the power.
If the precipitation sensor fails, check:
Таble 2. RESISTANCE OF EXTERNAL TEMPERATURE SENSOR at different ambient temperatures
| 5 °С | 25339 Ω |
|---|---|
| 10 °С | 19872 Ω |
| 20 °С | 12488 Ω |
| 30 °С | 8059 Ω |
| 40 °С | 5330 Ω |
ADDITIONAL INFORMATION
Do not fire and do not throw away the device with the household waste.
After the end of its service life, the product must be disposed of in
accordance with applicable law.
Transportation of goods carried in the package, ensuring the safety of the
product.
The devi e is transported by any kind of transport (rail, sea, motor, air
transportation).
Date of manufacture is on the back side of device. Application time is
unlimited.
If you have any questions or you something will not clear, call the Service
centre the telephone number listed below.
SAFETY INSTRUCTIONS
Carefully read and become aware of yourself these instructions.
Connection of the device must be done by a qualified electrician.
Do not connect 230 V mains voltage instead of the sensor (it leads to failure
of the thermostat).
Before the installation (dismantling) and connection (disconnection) of the
device, turn off voltage supply and also act according to the «Rules of an
arrangement of electric installations».
Do not immerse the sensor with a connecting wire in the liquid medium.
Do not switch the non assembled device to the network.
Turning on and off or and configure the device should be with dry hands.
Do not connect the device to the network disassembled.
Avoid hitting of water or moisture to the device.
Do not expose the device to extreme temperatures (higher than 40 ºС or below 5
°C) and high humidity.
Never clean the device with the use of chemicals such as benzene, solvents.
Do not store the device and do not use it in areas with the dust.
Do not attempt to disassemble and repair the device.
Do not exceed the landmarks value adaptor and power.
To protect against overvoltage caused by lightning discharges, use a lightning
protector.
Protect the children from games with the working device, it is dangerous.
VF23_ 220822
Low Voltage Directive 2014/35/EU
EMC Directive 2014/30/EU
Manufacturer and vendor: DS ELECTRONICS, LTD
04136, Ukraine, Kyiv region, Kyiv, 1-3 Pivnichno-Syretska str.
+38 (091) 481-91-81, Service Center: +38 (091) 481-91-81
[email protected]
www.ds-electronics.com.ua/en/
Documents / Resources
|
terneo sneg + OSA Smart Control of
Heating
[pdf] User Manual
sneg OSA Smart Control of Heating, sneg OSA, Smart Control of Heating, Smart
Control, Control
---|---