seitron TAD022 Digital Room Thermostat for Heating Cooling System Instruction Manual

: June 4, 2024
: seitron

seitron TAD022 Digital Room Thermostat for Heating Cooling System

seitron-TAD022-Digital-Room-Thermostat-for-Heating-Cooling-System-
PRODUCT

INSTALLATION

WARNING

To set properly the room temperature, install the thermostat far from heat sources, airstreams, or particularly cold walls (thermal bridges). These indications must be applied to place the remote sensor when this is used to acquire the room temperature.
A remote sensor must be connected using wires having at least a 1.5 mm² section and no longer than 15 meters.
Do not use the same channeling for the sensor signal and mains voltage.
The device must be wired to the electric mains through a switch capable of disconnecting all poles according to the current safety standards and with a contact separation of at least 3 mm in all poles.
Installation and electrical wiring of this device must be performed by qualified technicians and in compliance with the current standards.
Before wiring, the appliance is sure to turn the mains’ power off.

The device is designed to be installed in a standard recess (or wall) mounted junction box with two modules or else directly on the wall using the screw anchors provided.

To install the device perform the following steps

Push, with the help of a screwdriver, the plastic tooth located on the slot on the bottom side, then slightly lift up the plastic cover (Fig. 2).
Lift up the cover, while pressing it slightly, until it is fully extracted (Fig. 3).
Fix the base directly on a wall or on 2-modules wiring boxes through the two screws seats with 60 mm wheelbase paying attention to push the cables through the hole as shown in Fig. 4.
Make the electrical wirings following the connection diagrams of Fig. 5 and 6.
The power supply must be connected to the ‘E’ terminal while the load must be connected to the ‘F’ terminal as shown in Fig. 7.
Connect the optional remote sensor to the ‘G’ connector as shown in Fig. 8.

WARNING

The outputs, terminals 3, 4, and 5, are tension-free and insulated with double insulation from the other parts of the thermostat. So, it is possible to power the thermostat with high tension (230V~) and, at the same time, control a load at a low tension SEL (24V~), as can be seen in Fig. 5 and 6. In this case, it is necessary to keep a separation between the remote sensor cables, power cables, and the load wires, according to the current standards. In particular, it is necessary to fix the group of cables with cable ties separating the SELV wires from the others to avoid a wire getting disconnected accidentally, this won’t reduce the insulation toward SELV.

Close the thermostat as follows

Match the two teeth located in the upper side of the plastic base with the two slots located on the plastic cover.
Close the upper side of the cover while, at the same time, slightly pressing with a finger the plastic tooth on the bottom side of the base making it lean towards the inner side of the thermostat (see the arrow in Fig. 9). Complete the rotation of the cover until the plastic tooth on the base snaps into position.

Turn on the thermostat and configure it (see ‘SETTING USER PARAMETERS’ section).

230V~ DIGITAL ROOM THERMOSTAT, FOR THE HEATING / COOLING SYSTEM

DESCRIPTION OF CONTROLS KEY

A. Multifunction key

Normal operation

If pressed once shows the set-point temperature.
If pressed repeatedly decreases the set-point temperature.

In configuration mode

If pressed once shows the set parameter.
If pressed repeatedly changes the selected parameter (decreases the value).

B. Multifunction key

Normal operation

If pressed once shows the set-point temperature.
If pressed repeatedly increases the set-point temperature.

In configuration mode

If pressed once shows the set parameter.
If pressed repeatedly changes the selected parameter (increases the value).

C. Multifunction key

Normal operation

Sets the regulation mode: Comfort => Economy.
If pressed for 10 seconds, accesses to the user parameters.

In configuration mode

Enter in modification mode of the selected parameter.
Exits from modification mode of the selected parameter.

D. Multifunction key

Normal operation

Turns off the thermostat activating the antifreeze mode if active (only in Heating mode).

In configuration mode

Pressed once, exits the modification mode of the selected parameter. If pressed twice exits from user parameters programming.

DISPLAY INDICATIONS

The meaning of the symbols appearing on the display is given below:

| Temperature regulation in Comfort mode.
---|---
| Temperature regulation in Economy mode.
| The thermostat switched off, OFF mode.
| Antifrost mode active, the thermostat regulates to antifrost
| Heating mode, output on.
| Cooling mode, output on.
| The thermostat is in configuration mode /

The thermostat shows the set-point temperature.

| The thermostat shows the room temperature detected by the internal sensor.
| The thermostat shows the room temperature detected by the remote sensor.
| The blinking arrow ‘ ‘, indicates that the display of the temperature is shifted on the internal sensor, while the parameters remain set on the remote sensor.

OVERVIEW

This device is a digital thermostat for room temperature control with the possibility to choose between different regulation modes and related set-point temperatures: Comfort, Reduction, Off/ Antifreeze. The device can be used both in heating and cooling systems, and it is featured with a wide backlit display for the visualization of all the functional indications and the detected room temperature. The detection of the room temperature can be performed by the internal sensor or by a remote sensor (optional). Furthermore, the device offers the possibility to set the value of the antifreeze temperature and the Offset regulation on the internal and remote sensors.

STARTING UP

When starting up for the first time

Power on the device (see section ‘INSTALLATION’ at point ‘ 4 ‘).
Set the operating mode of the thermostat (user parameter ‘ H_C ’): Heating (factory default) or Cooling.

Regulation mode set-up

There are two modes to regulate the room temperature that can be chosen by pressing ‘ ‘.
Comfort: the thermostat sets the room temperature in comfort mode; this is normally the chosen temperature during the daytime.
Economy: the thermostat sets the room temperature in economy mode; this is normally the chosen temperature during night-time.

Comfort and Economy temperatures regulation

When in normal functioning mode, the display shows the detected room temperature and the icon related to the set regulation mode. To visualize the related set set-point temperature push once one of the keys or the display visualizes the set-point temperature and the icon (showing that the set-point temperature is being displayed). The icon is lit together with the blinking icon indicating that the display is showing the ‘Comfort’ set-point temperature or it can light together with the blinking icon display showing the ‘Reduction’ set-point temperature.

Pressing the keys and it is possible to modify the displayed set-point temperature. Pressing the key while the display is showing the ‘Comfort’ set point temperature, the display switches to the “Reduction’ set-point visualization. Vice versa, if the display was showing the “Reduction’ set- point, pushing the key the display switches to the ‘Comfort’ set point visualization. Pushing the key or after a few seconds of inactivity, goes back to the visualization of the detected room temperature. (showing that the set- point indicating that the visualization of the detected room temperature.

Note: Usually, in order to get a temperature reduction at night, the economy temperature should have a lower value than the comfort one.

Temperature display

During normal operation, the display shows the room temperature detected by the internal sensor, distinguished by the icon ‘ ‘, or the room temperature detected by the remote sensor (if connected) distinguished by the icon ‘ ‘. The detected temperatures are displayed corrected by the set Offset value.

In case the parameter ‘ rEG ‘ is set on ‘ EHt ‘, but the remote sensor is not connected or is damaged, the display shows the icon with the blinking ‘ ‘ arrow showing that the regulation of the temperature has been automatically shifted on the internal sensor while remaining the parameter set on ‘ EHt ‘ (external sensor).

Switching off – Antifrost function

To switch off the thermostat press the ‘ ’ button. The display will show the writing ‘ OFF ’ and the symbol ‘ ’. If the thermostat has been set in the heating mode, the Antifrost function will be active and the ‘ ‘ symbol will appear on the display; in this case, the room temperature will be controlled by relying on the value set for the Antifrost temperature (see chapter ‘SETTING THE USER PARAMETERS‘).

Backlighting

The display backlight turns on whenever any button is pressed. It turns off automatically 20 seconds after the last pression of a button.

TECHNICAL CHARACTERISTICS

Power supply: 230V~ 50Hz
Absorbed power: 1,7VA
The backlight turns off: 20 seconds after the last press of a button
Setting range: Comfort: 5°C .. 40°C
Economy: 5°C .. 40°C

Internal sensor

Type of sensor: NTC 10KOhm ±1% @ 25°C
Range: -9,9°C .. +50,0°C
Precision: ±1,0°C
Resolution: 0.1°C ( 0.0°C .. 50.0°C)
- 0.2°C (-9.9°C .. -0.1°C)

Remote probe (optional)

Type of sensor: NTC 10KOhm ±1% @ 25°C
Range: -9,9°C .. +50,0°C
Precision: ±1,0°C
Resolution: 0.1°C ( 0.0°C .. 50.0°C)
- 0.2°C (-9.9°C .. -0.1°C)
The maximum length of the wires to the remote sensor: 15 m
Differential: 0.0°C .. 5.0°C (Default 0.2°C)
Antifrost: OFF / 0.0°C .. 25.0°C
- (Default 3.0°C)
Offset internal sensor: ± 9.9°C (Default 0.0°C)
Offset remote probe: ± 9.9°C (Default 0.0°C)
Sampling time: 1 sec.
Minimum relay activation time: 2 .. 240 seconds
- (Default 2 seconds)
Contact rating: 5(1)A 250V~ SPDT,
- voltage free.
Protection rating: IP 30
Type of action: 1
Pollution degree: 2
Overvoltage category: II
- Class of protection against
electric shock: II
Rated impulse voltage: 2500V
Tracking Index (PTI): 175
Number of manual cycles: 50.000
Number of automatic cycles: 100.000
Software class: A
EMC test voltage: 230V~
EMC test current: 7,2mA
Distances tolerances fault mode ‘short’ exclusion: ±0,15mm
Ball pressure test temperature: 75°C
Operating temperature: 0°C .. 40 °C
Storage temperature: -10°C .. +50 °C
Humidity limits: 20% .. 80 % RH non-condensing
Enclosure:
- Material: ABS V0 self-extinguishing
- Colour: Signal white (RAL 9003)
Installation: Wall-mount

CLASSIFICATION UNDER REG. 2013.811.EC

Class: I
Contribution to energy efficiency: 1%

DIMENSIONS

SETTING USER PARAMETERS

To enter the setting mode of the thermostat parameters, proceed as follows:

Keep pressed for more than 10 seconds for the key ‘ ‘; the display shows the icon ‘ ’ and the first user parameter ‘ AFr ‘.
Press the keys ‘ ‘ and ’ ’ to scroll among the user parameters:
Antifrost Setting ‘ AFr ’
Internal sensor Offset setting ‘ OFS1 ’
Remote sensor Offset setting ‘ OFS2 ’
Regulation sensor setting ‘ rEG ’
Hysteresis setting ‘ HYS ’
Heating / Cooling setting ‘ H_C ’
Minimum relay activation time setup ‘ t_SA ’
Reset to default data ‘ dFLt ’
Push the key ‘ ‘ to enter the settings of the selected parameter; the display shows the blinking icon ‘ ’.
Configure the data associated with each individual parameter as illustrated below.
Push the key ‘ ‘ to exit from the settings of the selected parameter; every change is automatically stored in memory.
To exit the user parameter programming mode, press the ‘ ’ button to confirm the changes made, or else wait 10 seconds without pressing any button.

‘AFr’ ANTIFROST SETTING

The Antifrost function allows you to select a minimum temperature to be maintained when the thermostat is off, so as to protect both the room and the equipment when the room temperature falls below the set value. The device comes with a factory default with the Antifrost function set to 6°C.

IMPORTANT: this function is active only when the device has been set in heating mode.

To set the Antifrost temperature, carry out the following steps

Select the parameter ‘ AFr ’ and press the ‘ ‘ button.
The display will show the previously set Antifrost temperature.
Press buttons ‘ ‘ and ’ ’ to change the setting (between OFF, 0.5°C..25°C); every change will be automatically stored in memory.
Push the key ‘ ‘ to exit from the settings of the selected parameter. To exit from the Programmation of the user parameters, push the key ‘ ’ or wait 10 seconds without pushing any key.

‘OFS1’ INTERNAL SENSOR OFFSET SETTING

With this parameter, it is possible to correct the temperature reading of the internal sensor by ±9.9°C in order to correct any systematic reading errors due to the placement of the thermostat in areas unsuitable for measuring the room temperature. The device leaves the factory with the Offset set at 0.0°C. To set the Offset value for the internal sensor, perform the following steps:

Select the ‘ OFS1 ’ parameter and press the ‘ ‘ button.
The display will show the previously set Offset temperature.
Press buttons ‘ ‘ and ’ ’ to modify the setting (range: -9.9°C .. +9.9°C); every change will be automatically stored in memory.
Push the key ‘ ‘ to exit from the settings of the selected parameter. To exit from the Programmation of the user parameters, push the key ‘ ’ or wait 10 seconds without pushing any key.

‘OFS2’ REMOTE SENSOR OFFSET SETTING

With this parameter, it is possible to correct the temperature reading of the remote sensor by ±9.9°C in order to correct any systematic reading errors due to the positioning of the remote sensor in areas unsuitable for measuring the room temperature. The device comes with a factory default Offset at 0.0°C. To regulate the Offset value for the remote sensor, perform the following steps:

Select the ‘ OFS2 ’ parameter and press the ‘ ‘ button.
The display will show the previously set Offset temperature.
Press buttons ‘ ‘ and ’ ’ to modify the setting (range: -9.9°C .. +9.9°C); every change will be automatically stored in memory.
Push the key ‘ ‘ to exit from the settings of the selected parameter. To exit from the Programmation of the user parameters, push the key ‘ ’ or wait 10 seconds without pushing any key.

WARNING: The function is active only if the parameter ‘ rEG ’ is set on ‘ EHt ‘.

‘rEG’ REGULATION SENSOR CHOICE SETTING

This parameter sets whether the room temperature regulation is made based on the thermostat internal sensor or the remote sensor wired to the connector of Fig. 8. The device comes with factory default settings on the internal sensor (Int). To switch back and forth between these two parameters, perform these operations:

Select parameter ‘ rEG ’ then press key ‘ ‘.
The display shows ‘ Int ‘ or ‘ EHt ‘
Press keys ‘ ‘ and ’ ’ to change the value (Int: internal sensor – EHt: remote sensor); each selection is automatically stored in memory.
Push the key ‘ ‘ to exit from the settings of the selected parameter. To exit from the Programmation of the user parameters, push the key ‘ ’ or wait 10 seconds without pushing any key.

WARNING: When the regulation is set according to the remote sensor ‘ EHt ‘ and in case this sensor is missing or broken, the temperature regulation will be performed according to the internal sensor, even if the parameter remains set on ‘ EHt ‘.

‘HYS’ HYSTERESIS SETTING

This parameter sets the hysteresis, in °C, used in the temperature regulation. The device comes with factory default with the differential set at 0,2°C.

WARNING: The regulation of this parameter must be absolutely made by qualified personnel because setting an inappropriate value might result in a wrong operation of the whole regulation system.

To set the hysteresis follow these steps

Select the parameter ‘ HYS ’ and press the ‘ ‘ button.
The display shows the hysteresis value previously set.
Press buttons ‘ ‘ and ’ ’ to change the setting (inside 0.0°C..5.0°C interval); every change will be automatically stored in memory.
Push the key ‘ ‘ to exit from the settings of the selected parameter. To exit from the Programmation of the user parameters, push the key ‘ ’ or wait 10 seconds without pushing any key.

H_C’ HEATING / COOLING SETTING

This setting is used to invert the operating logic of the relay according to which kind of unit is being controlled (heating or air conditioning).

IMPORTANT: The thermostat comes by factory default in heating mode.

To modify the operating logic, perform the following operations

Select the parameter ‘ H_C ’ and press the ‘ ‘ button.
The display shows the current control mode.
Push the keys ‘ ‘ and ’ ’ to select the desired regulation (HEAt: Heating – COOL: Cooling); each change is automatically saved.
Push the key ‘ ‘ to exit from the settings of the selected parameter. To exit from the Programmation of the user parameters, push the key ‘ ’ or wait 10 seconds without pushing any key.

WARNING: During normal operation, the activation of the relay in Heating mode is shown by the lit icon ‘ ‘ while, on the opposite, the activation of the relay in Cooling mode is shown by the lit icon ‘ ‘.

‘ t_SA ’ MINIMUM RELAY ACTIVATION TIME SETUP

This parameter allows to a reduction of the number of ON/OFF cycles of the output. This function is useful in case the thermostat drives a pellet stove that cannot be switched ON and OFF for a too short time. Once the relay is switched ON according to a heating (or cooling) need of the room, it will not be switched OFF until the ‘minimum time is expired. The parameter can be set in the 2 .. 240 seconds range. The device comes with a factory default with the parameter set to 2 seconds.

To set the minimum relay activation time, perform the following operations

Select the parameter ‘ t_SA ’ and press the ‘ ‘ button.
The display shows the sampling time previously set.
Press buttons ‘ ‘ and ’ ’ to change the setting (between 0 .. 240 seconds); every change will be automatically stored in memory.
Push the key ‘ ‘ to exit from the settings of the selected parameter. To exit from the Programmation of the user parameters, push the key ‘ ’ or wait 10 seconds without pushing any key.

‘ dFLt ’ SET DEFAULT DATA

With this parameter, it is possible to reset the user parameters in order to bring back all the parameters to factory defaults. Proceed as follows:

Select the parameter ’dFLt’ and press ‘ ‘; the device automatically sets the default data and the display will show ’-dF-’.
To quit the user parameter settings press the ‘ ‘ button or wait 20 seconds without pressing any key.
The display shows the writing ‘ OFF ’.
The thermostat is deactivated; to activate the thermostat push the key ‘ ’.

WARNING: Restoring the Default Data will reset all settings made by the user, such as Heating/Cooling, Set-Points, and all other programmable data.

EXTERNAL NTC SENSOR

The thermostat features an input for connecting an external NTC sensor (optional) alternatively to the internal one. The external sensor can be used to measure the room temperature when the thermostat is installed in a position that does not allow a correct measurement of the room temperature. When the installation requires to be set with a remote sensor, it is necessary to regulate correctly the parameter ‘ rEG ‘ and connect an NTC 10 KOhm at 25°C sensors to the connector JST 2 poles of Fig. 8. If in doubt about the type of sensor to be connected, please consult the manufacturer. The thermostat comes with factory default already set for the operation with the internal sensor.

WARRANTY

In view of the constant development of their products, the manufacturer reserves the right for changing technical data and features without prior notice. The consumer is guaranteed against any lack of conformity according to the European Directive 1999/44/EC as well as to the manufacturer’s document about the warranty policy. The full text of the warranty is available on request from the seller.