thT - Thermostat Carel - Free user manual and instructions

Product Type	Room Thermostat
Brand	Carel
Model	thT
Power Supply	85-260 VAC, 50/60 Hz
Power Consumption	2 VA
Display	White backlit LCD screen
Ambient Temperature Range	0 to +45 °C
Temperature Display Range	−10 to +60 °C
Temperature Accuracy	±0.5 °C (0 to 45 °C)
Humidity Sensor	Models with, accuracy ±5% RH (20-80% RH)
Protection Rating	IP20
Relay Type	SPDT (NO/NC), 5 A resistive / 2 A inductive at 230 VAC
Communication	RS485 Modbus RTU
Programming	Time schedules, Eco/Party modes, frost protection
Mounting	Flush or surface
Dimensions (flush)	Suitable for Ø65 mm box
Standards	EN60730, REACH, RoHS
Warranty	2 years
Maintenance	Clean with dry cloth, avoid chemicals
Safety	Disconnect before intervention, avoid moisture and excessive heat

Frequently Asked Questions - thT Carel

How to install the thT thermostat?

Before any intervention, cut off the power supply. Separate the front part from the back part using a screwdriver. For flush mounting, use a junction box of at least 65 mm diameter and 31 mm depth. Make the connections according to the diagram, then fix the back part. Finally, clip the front part into place.

How to set the clock?

Turn on the thermostat, press the Clock button for 5 seconds. The secondary field displays « hh:mm ». Press the button again to make the hours flash, turn the knob to adjust, then press to confirm. Repeat for minutes and the day of the week.

How to configure time schedules?

Turn on the thermostat, press the Clock button for 5 seconds. Turn the knob until « F5-2 » is displayed, press to confirm. Choose between weekdays and weekend. Then, select a time slot (1 to 4), set the start time and setpoint by turning and pressing the knob.

How to use Eco mode?

Turn on the thermostat, press the Clock button to select the Eco function (leaf icon). The setpoint is automatically reduced by 3 °C in heating and increased by 3 °C in cooling compared to the normal setpoint. You can program the value via the « F Lo » menu by pressing the Clock button for 5 seconds.

How to use Party mode?

Turn on the thermostat, press the Clock button to select the Party function (party icon). This temporarily increases the setpoint (forced heating). You can program the value via the « FHi » menu by pressing the Clock button for 5 seconds.

What does the alarm code E1 mean?

The E1 code indicates a short circuit of the temperature sensor. Check the sensor wiring. If the problem persists, contact a professional.

How to lock the keys?

Press the Lock button (padlock icon) for 3 seconds to lock or unlock all keys. You can also enable this function in the settings menu (parameter « LE »).

How to connect the thermostat to a Modbus network?

Use a shielded 3-conductor cable AWG 20-22 for the RS485 serial connection. The total network length must not exceed 500 m. Configure the thermostat address (parameter « Id », default 50) and the transmission speed (parameter « br ») to match the Modbus master. Up to 32 thermostats can be connected.

How to calibrate the temperature probe?

Access the settings menu by turning off the thermostat, then simultaneously pressing the mode and + buttons for 5 seconds. Enter the password 22. Navigate to parameter « tC » (temperature calibration) and set a compensation value between -5.0 and +5.0 °C in steps of 0.1 °C.

How to activate the frost protection function?

In the settings menu, set parameter « FE » to 1 to activate the frost protection function. Then set the threshold temperature « Ft » between 5 and 17 °C. When the thermostat is off and the ambient temperature drops below « Ft », the relay activates and the frost protection icon is displayed.

USER MANUAL thT Carel

Electronic thermostat for residential applications

ITA Manuale d'uso
ENG User manual
FRE Mode d'emploi
GER Technisches Handbuch
Manual del usuario

AVVERTENZE

• Setpoint cooling:
• Setpoint heating (

CAREL bases the development of its products on decades of experience in HVAC, on the continuous investments in technological innovations to products, procedures and strict quality processes with in-circuit and functional testing on 100% of its products, and on the most innovative production technology available on the market. CAREL and its subsidiaries nonetheless cannot guarantee that all the aspects of the product and the software included with the product respond to the requirements of the final application, despite the product being developed according to start-of-the-art techniques.

The customer (manufacturer, developer or installer of the final equipment) accepts all liability and risk relating to the confl guration of the product in order to reach the expected results in relation to the speci c fi nal installation and/or equipment. CAREL may, based on speci c agreements, act as a consultant for the positive commissioning of the fi nal unit/application, however in no case does it accept liability for the correct operation of the fi nal equipment/system.

The CAREL product is a state of the art product, whose operation is specified in the technical documentation supplied with the product or can be downloaded, even prior to purchase, from the website www.CAREL.com.

Each CAREL product, in relation to its advanced level of technology, requires setup / configuration / programming / commissioning to be able to operate in the best possible way for the specific application. The failure to complete such operations, which are required/indicated in the user manual, may cause the final product to malfunction; CAREL accepts no liability in such cases.

Only qualified personnel may install or carry out technical service on the product. The customer must only use the product in the manner described in the documentation relating to the product.

In addition to observing any further warnings described in this manual, the following warnings must be heeded for all CAREL products:

• Prevent the electronic circuits from getting wet. Rain, humidity and all types of liquids or condensate contain corrosive minerals that may damage the electronic circuits. In any case, the product should be used or stored in environments that comply with the temperature and humidity limits specified in the manual.
• Do not install the device in particularly hot environments. Too high temperatures may reduce the life of electronic devices, damage them and deform or melt the plastic parts. In any case, the product should be used or stored in environments that comply with the temperature and humidity limits specified in the manual.
• Do not attempt to open the device in any way other than described in the manual.
• Do not drop, hit or shake the device, as the internal circuits and mechanisms may be irreparably damaged.
• Do not use corrosive chemicals, solvents or aggressive detergents to clean the device.
• Do not use the product for applications other than those specified in the technical manual.

All of the above suggestions likewise apply to the controllers, serial boards, programming keys or any other accessory in the CAREL product portfolio. CAREL adopts a policy of continual development. Consequently, CAREL reserves the right to make changes and improvements to any product described in this document without prior warning.

The technical specifications shown in the manual may be changed without prior warning.

The liability of CAREL in relation to its products is specified in the CAREL general contract conditions, available on the website www.CAREL.com and/or by specific agreements with customers; specific cally, to the extent where allowed by applicable legislation, in no case will CAREL, its employees or subsidiaries be liable for any lost earnings or sales, losses of data and information, costs of replacement goods or services, damage to things or people, downtime or any direct, indirect, incidental, actual, punitive, exemplary, special or consequential damage of any kind whatsoever, whether contractual, extra-contractual or due to negligence, or any other liabilities deriving from the installation, use or impossibility to use the product, even if CAREL or its subsidiaries are warned of the possibility of such damage.

DISPOSAL

INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)

In reference to European Union directive 2002/96/EC issued on 27 January 2003 and the related national legislation, please note that:

• WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of separately;
• the public or private waste collection systems defined by local legislation must be used. In addition, the equipment can be returned to the distributor at the end of its working life when buying new equipment;
  the equipment may contain hazardous substances: the improper use or incorrect disposal of such may have negative effects on human health and on the environment;
  the symbol (crossed-out wheeled bin) shown on the product or on the packaging and on the instruction sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and that it must be disposed of separately;
• in the event of illegal disposal of electrical and electronic waste, the penalties are specified by local waste disposal legislation.

Warranty on the materials: 2 years (from the date of production, excluding consumables).

Approval: the quality and safety of CAREL INDUSTRIES Hqs products are guaranteed by the ISO 9001 certif ed design and production system.

WARNING: separate as much as possible the probe and digital input signal cables from the cables carrying inductive loads and power cables to avoid possible electromagnetic disturbance.

Never run power cables (including the electrical panel wiring) and signal cables in the same conduits.

READ CAREFULLY IN THE TEXT!

Content

1. GENERAL FEATURES 7

1.1 Models 7
1.2 Dimensioni 7
1.3 Technical specifications.. 13

1. GENERAL FEATURES

ThT Thermostat is the CAREL room thermostat that allows users to control the temperature in residential or light commercial environments, providing of simplified interface that is ideal for end users. Temperature set is simple and intuitive, using the knob on the front panel. thT also allows the user to make some settings, such as the operating mode and time bands. Compact dimensions and elegant design make it suitable for all types of rooms, as well as being ideal both as a simplified HM1 (Human Unit Interface) for heat pumps, rooftop units, AHUs, etc. and as zone controller display for centralised systems.

The RS485 serial connection over Modbus protocol means architecture can be implemented in which multiple displays are connected to a controller to create synergic control logic with programmable controllers. It can works in stand-alone mode as ambient thermostat or connected to programmable controllers.

Depending on the model, thT thermostat is fitted for Flush or Wall mounting and power supply is 230 Vac.

A temperature sensor is available in all models in order to manage the comfort in the residential ambient, and a Humidity sensor only on specific models.

thT is compatible with the main flush mount distribution boxes available on the market.

1.1 Models

Codes FLUSH MOUNTING:

THB000AAF0 th	thermostat temperature - flush mounting - neutral version
THB000ACF0 th	thermostat temperature and humidity - flush mounting - neutral version

Codes WALL MOUNTING:

THB000AAW0	tht thermostat temperature - wall mounting - neutral version
THB000ACW0	tht thermostat temperature and humidity - wall mounting - neutral version

1.2 Dimensions

Dimension flush mounting

Dimensions of rear part (mm)

Dimension wall mounting

Dimensions of rear part (mm)

Installation warnings

These thT thermostats have been designed for wall or flush mount assembly, on distribution boxes compliant with the standards in force;
- before performing any operations on the thermostat, disconnect the power supply from the device by switching the main switch on the electrical panel OFF. Then remove the front part of the thermostat from the rear to make the electrical connections;

• for the serial connection use three-wire shielded cable, AWG 20-22. The length of the network must not exceed 500m . For extended networks fit a 120 Ohm resistor between RX/TX+ and RX/TX- on the first and last device, to avoid possible communication problems.

Assembly for the flush mounting

To fit the rear part of the terminal use a flush mount box with a min diameter of 65mm and a minimum depth of 31mm .

1. Detach the front from the rear of the thT thermostat using a screwdriver;
2. Make the electrical connections according with the schematic;
3. Fasten the rear to the flush mount box using the 2 screws supplied:
4. Finally reposition the thT thermostat the original position and ensure to fix it with clicks into place.

Dismantling

Wiring

Exploded

Assembly for the wall mounting

1. Separate the front from the rear of the terminal using a screwdriver;
2. To remove cover A1, unscrew screw A2 and press the point of attachment; access terminal block A3;
3. Drill the holes in the wall (dia. 5 mm); then insert the plugs and screws supplied, making sure that the electrical wires pass through hole E;
4. Make the electrical connections according with the schematic;
5. Close cover A1, completing the same operations as described above in reverse;
6. Finally reposition the thT thermostat the original position and ensure to fix it with clicks into place.

Dismantling

Cover dismantling

Is It Possible to change the rotation of the display moving the base in the other three possible positions:

1. remove the screw;
2. remove the base;
3. turn the base and place it in the right position;
4. tighten the screw;

Dismantling

Insert a screwdriver into the clot at the top and press downwards to detach the display.

General notes

Avoid installing the terminal in environments with the following characteristics:

relative humidity greater than the value specified;

• strong vibrations or knocks;
  exposure to water sprays;
  exposure to aggressive and polluting atmospheres (e.g.: sulphur and ammonia fumes, saline mist, smoke) so as to avoid corrosion and/or oxidation;
• strong magnetic and/or radio frequency interference (for example, near transmitting antenna);
  exposure to direct sunlight or the elements in general;
  large and rapid fluctuations in the room temperature;
  environments where explosives or mixes of fl ammable gases are present;
  exposure to dust (formation of corrosive patina with possible oxidation and reduction of insulation).

Electrical connections

Example of network connections

Display

Key:

1. Operating mode
2. Main feld
3. Time Band active
4. Secondary fi eld
5. Day of week
6. Alarm
7. Fan/Heating function
8. Fan speed/Forced heating time
9. Temperature unit
10. lcone locked
11. Set point setting
12. Humidity unit of measure
13. Current time band
14. Relay active
15. Forced heating

Key Function

Key Description Function

mode	Select mode	Press shortly, you can select different mode you need.
	Check humidity	Press for 3 seconds, you can check the current humidity with the display "XX%RH", if there is no humidity sensor, the display will show "no H"
	Fan If it is Fan	key, you can select different fan speed by pressing it.
	Heating If it is	Heating key, you can select force heating time by pressing it.
	Clock Press shorty, you can enable time band, Eco or Party, and cancel them. Press for 3 seconds, you can select clock setting, time band setting, Eco set point or Party set point.
	On/Off key	Press shortly, you can turn on/off the thermostat.
	Lock key	Press 3 seconds, you can lock/unlock all the keys.
	Knob	By rotating the knob, you can adjust the parameter or set point.

Key Description Function
mode + 111 setting	Parameter setting
	If you want to set parameter, you can operate as followinga. turn off the thermostat by ON/OFF buttonb. press and hold "mode+ 111" for 5 secondsc. rotate the knob, set the password to 22d. select parameter and change its value by rotating and press the knob.
	Exit form menu:Waiting 20s without any operation;Confirm with any of the 4 key pressed;

Humidity Check

Turn on the thermostat (model with humidity version), press and hold "mode" for 3 seconds, the LCD will display % rH value", if thT is only temperature sensor (no humidity), the display will show no H.

Key Fan/Heating

The key " is configured as Fan ( ) or Heating ( ) mode according with parameter FH (Fan - Heating).

FH=00->Fan

FH=01-Heating

This information is sent by Modbus (Coil 53).

When“FH"=0

Pressing the button 品 we can select the desired speed (min, med, max) or automatic (Auto) and send this information through Modbus (Register 7)

When“FH”=1

The button is configured for managing heating device, pressing it we can select the time where the unit will be forced 100% (20,40 or 60 min). This information is sent by Modbus (Register 8)

Pressing the button, we can set the desired time of heating forced. Every press of the button, increment the time to: 20, 40, 60 min, and on the display will be shown.

When relay is active the icon is shown.

FS: Ventilation/Heating controlled by

FS=00→thT

FS=01→Modbus

FS	FH	Relay management
0	-	thT
1	0	Modbus - ventilation
1	1	Modbus - heating

Tab.1.a

Clock Setting

Turn on the thermostat, press and hold for 5 seconds, the secondary field display "hh:mm", now, press

• hh blinking, rotate the knob to adjust the hour and press it to confirm.
• then the mm blinking, rotate the knob to adjust the minute and press it to confirm.
• then the day of week blinking, rotate the knob to adjust the day and press it to confirm.

Time Band Setting

Turn on the thermostat, press and hold for 5 seconds, rotate the knob, when the secondary field display "F5-2", press it. Now, you can set the time band as following:
- Select workday or weekend by rotating the knob and confirm by pressing it.

1. encoder"rotation
2. Select one time band by rotating the knob and confirm by pressing it.
3. Adjust the start time by rotating the knob and confirm by pressing it.
4. Adjust the set point by rotating the knob and confirm by pressing it.

The default value in the thermostat is following:

	time 1 time	time 2 time	time 3 time	4
	Start time Set point	Start time Set point	Start time Set point	Start time Set point
Working (mon-friday)	7:00	17:00	21:00	22:00
	15.0 °C	22.0 °C	20.0 °C	18.0 °C
Weekend (sat-sun)	7:00	09:00	17:00	22:00
	22.0 °C	20.0 °C	22.0 °C	18.0 °C

Note: the sequence of time bands is fixed and it is possible to view

and finish it only following this sequence (i.e. to go back it's necessary to keep rotating the encoder to start again and repeat from the beginning.

1 push the "Encoder"

2 select one of 4 "time bands" or "esc"

3 set point

4 start time of time band selected

Note: information "hh", "mm" and "week" is sent by Modbus:

• hh-Register 6
• mm-Register 7
  day-Register8

Time band / Eco /Party function selection

Turn on the thermostat, press the you can select the function. What functions are available depends on the value of "tE".

Eco Setting

By activating this function, the temperature can be lower than the set point.

Turn on the thermostat, press and hold for 5 seconds, rotate the knob, when the secondary fi el display "F Lo", press it. Now, you can set the Eco set point by rotating the knob and confirm by pressing it.

Eco offset is -3^ in heating and +3^ in cooling

"eco setpoint" information is sent by Modbus (Register 52)

Party Setting

Activating this function it is possible have a different, predefined temperature higher than set point to activate in extraordinary situation.

Turn on the thermostat, press and hold for 5 seconds, rotate the knob, when the secondary field display "F Hi", press it. Now, you can set the Party set point by rotating the knob and confirm by pressing it.

Set point

Turn on the thermostat, turn right the knob, increase the set point, turn left the knob, reduce the set point in step of 0.5^ . The value can also be set via Modbus.

Differential

To impostare il differenziale, enter in the df (differential) menu and select the new value with step 0.5. (0.5 - 1,0 - 1,5 - 2,0^) .

Output Control

The control mode is available in both cooling and heating mode and it is managed by user.

• Set point cooling ("")
• Set point heating ("")

df (differential) is a parameter to set in the parameter set menu and it is a relay differential in cooling/heating mode.

Regulation is based on recognized temperature sensor. The set points need to be defined.

Parameter Setting

Turn off the thermostat using the ON/OFF button, press and hold"mode 111

• 喜 "for 5 seconds, insert the password (22) and press the knob to confirm. The parameter list is following.

LCD display	Description Default	value	Note
PS Password 00 Password is: 22
FH FAN/HEATING configuration 00·00:FAN			·01:HEATING
Co Confi guration "mode" button 3 see table in the bottom
tC Temperature sensor calibration		0.0 °C -5.0 to 5.0 °C
HC Humidity sensor calibration 0.0% rH		-10.0% to 10.0% rH
FE	Enable frost protection mode	01·00:Dis able	·01:Enable
Ft	Frost protection set point	5.0 °C 5 to 17 °C
Id	BMS address	50 50 to 8
br	Baud rate	00·00:19200·01:9600·02:4800
bE	Buzzer Enable	01·00:Dis able	·01:Enable
df	Diff erential	0.5 °C · 0.5 °C	·1.0 °C · 1.5 °C · 2.0 °C
LE	Key Lock Enable	0·00:Dis able	·01:Enable
rC Relay management		00·00:Automayc	·01:Manual
Ar Auto recovery		01 fixed
tE	Confi guration clock button	07 01 to 07
tM ON/OFF button by		00·00:Thermostat	·01:RS485
tE	Number of variables to show on display	00 00 to 05
dS	Mode button by	00·00:Thermostat	·01:Modbus
FS	FAN/HEATING button by 00	·00:Thermostat	·01:Modbus

Keypad Functionalities

Key Mode

To select the sequence of icons to show on display, enter in the Parameters Menu and configure the parameter "Co" and with rotary encoder select the new value turning right or left, then press to confirm. Here below, possible symbols to manage are:

the symbols can be turn on separately or in pairs and the sequence is defined setting to "1" the different bits of configuration parameter.

Bit number	Symbol
00	●
01	●
02	●
03	●
04	●+●
05	●+●
06	●+●
07	●+●
08	●+●
09	Not used
10	Not used
11	Not used
12	Not used
13	Not used
14	Not used
15	Not used

Tab.1.b

Example:

It bit 00, 01, and 07 are set to "1" the configuration variable value = 131 (converted binary code to decimal code) and the sequence pressing "mode" buttos is:

Temperature sensor calibration

To adjust the temperature calibration, enter in the tC (Temperature Calibration) menu, in un range compreso tra -5 e + 5 °C con incrementi di ±0,1 °C.

Humidity sensor calibration

Available only for the models with humidity sensor. To adjust the humidity calibration, enter in the hC (Humidity Calibration) menu, in un range compreso tra-10 a+10 UR % con incrementi di ± 0.1 UR%.

Frost protection

If enabling the frost protection function (FE - Enable frost protection set to: 0 = Disabled; 1 = Enabled), when the thermostat is turned off, and the temperature is lower than "Ft", the output will switch on the relay, and the LCD display "△"; when the temperature is up to "Ft + 2"°C, the output will switch off the relay with the "△" disappear.

Frost protection set point

The set the frost protection set point, enter in the Ft (Frost protection temperature) menu and select the new value from 5,0 to 17,0^

Buzzer enable

To enable this operation, enter in the bE (Buzzer Enable) menu and confirm:

To enable this operation, enter in the LE (Lock Enable) menu and confirm the new value

• 0 = Disable;
• 1 = Enable;

Auto recovery

For internal use. It is fix to 1;

Key Clock

To select the sequence of functions to show on display, enter in the Parameters Menu and configure the parameter "tE" and with rotary encoder select the new value turning right or left, then press "to confirm.

The following functions can be selected:

Value	Action
0	disabled
1
2
3	→
4
5	→
6	→
7	→→→

Tab.1.c

The symbols can be turn on separately or in pairs and the sequence is defined setting to "1" the different bits of configuration parameter.

Example:

If the confi guration variable value = 7 ,the sequence pressing "clock" button is:

No time band->

Pressing the button, we can select the desired function.

The logic is to change the different time bands pressing the button and the related cycle can manage 4 different choices:

1. No Time Band (no icons shown)
2. Time Band (icons activated are " and the icon related to actual time band)
   3.Eco (icon activated is "")
3. Party (icon activated is "11")

ON/OFF the thermostat

The thermostat on-off is managed by thermostat or by Modbus. The choice is decided in parameters menu (parameter "LM").

If "tM" parameter is = 0 (thermostat control)

Press to turn on, press again to turn off thermostat and deactivate the relay.

If "tM" parameter is = 1 Modbus control) -> Coil 58

The thermostat ON/OFF is decided by Modbus (Coil 50).

The ON/OFF status is sent by Modbus (Coil 8).

Alarm

When there is one of the follow alarm, display will show the error code on LCD will buzzer switch on (in accord with the parameter bE - Buzzer enable). And relay output will be closed with "..." appear.

LCD abbreviation Alarm

E1 Sensor short circuit alarm
E2 Sensor open circuit alarm
EE eeprom fault
HI Temperature higher than 55 °C
LO Temperature lower than 0 °C
AC	Clock

Cn message on display

After power on, the first 30 s once data traffic is detected, this thermostat will be recognized as network mode. When communication drops off or cable is cut or disconnected and is 30s timeout in the second field of the display it will blink between "Cn" message and clock (10 seconds for clock and 2 seconds for Cn).

1.3 Technical specifications

Power supply	From 85 to 260 Vac, 50/60 Hz
Power consumption	2 VA
Operating Conditions	0 up to +45 °C
	5% up to 90% rH
Storage conditions	-10 up to +55 °C
	5% up to 90% rH
Index of protection	IP 20
Display	LCD (white backlight)
Temperature value displayed	-10 ± 60 °C -> ± 0,1 K
Precision of temperature measurement	0 up to 45 °C -> ± 0,5 K
Precision of humidity measurement	20 to 80% rH: ±5% rH
Current load relay	Max 5 A (Resistive) / 2 A (Inductive)
Norm	according to EN60730 - Category II
	REACH Compliant
	RoHS Compliant
Data stored	3 years
Type of relay	SPDT (N.O / N.C.)
Voltage relay	230 Vac

RS485 Connections

RS485 serial: AWG 20 to 22, shielded cable, Lmax=500 m

Power supply: Cross-section of the wires; 0.5 mm2 to 1.5 mm2

Comunication mode

Protocol type: RTU

Data bit: 8

Stop bit: 2

Parity: None

BMS Baud rate

To enable this operation, enter in the Br (Baud rate) menu and confirm the Baud rate:

0=19200(default)
1 = 9600
2 = 4800

RS485 Address Set

To enable this operation, select the Id (Identify device) parameter to confirm the thermostat RS485 address.

It is possible connect up to 32 thermostats. The serial address defi ned in the range 50 to 81 (Default 50).

Summary table of operating parameters

Coils List

Address	Type	R or R/W	Variable Description	Data interpretation
1	Coil	R	Probe - Short circuit	0 normal; 1 fault
2	Coil	R	Probe - disconnected	0 normal; 1 fault
3	Coil	R	E² Fault	0 normal; 1 fault
4	Coil	R	High temperature alarm	0 normal; 1 fault
5	Coil	R	Low temperature alarm	0 normal; 1 fault
6	Coil	R	Alarm Status	0: No Alarms 1: Alarm
7	Coil	R	On/Off relé Status	0: Off 1: On
8	Coil	R	Thermostat On/Off Status	0: Off 1: On
50	Coil	R / W Thermostat on-off control		0: Off 1: On
51	Coil	R / W Relay management conf guration		0: automatic (default) 1: manual
52	Coil	R / W Relay control in manual mode		0: Disabled 1: Active
53	Coil	R / W Fan / Heating button conf guration		0: Fan 1: Heating
54	Coil	R / W Frost mode enable 0: Off		1: Enabled
55	Coil	R / W Keys lock function enable		0: Off 1: Enabled
56	Coil	R / W Buzzer enable	0: Off 1: Enabled
57	Coil	R / W Time band enable	0: Off 1: Enabled
58	Coil	R / W Thermostat on-off selection		0: by thermostat 1: by RS485 serial line
59	Coil	R / W Mode button selection		0: by thermostat 1: by RS485 serial line
60	Coil	R / W Fan / Heating - button selection		0: by thermostat 1: by RS485 serial line

Holding registers / Input registers Commands

Address	Type	R or R/W	Variable Description Data interpretation
1	Register R	Machine code		Fixed to 314
2	Register R	Hardware revision		1.021
3	Register R	R	Firmware release	Depends on firmware release (e.g.:10 for firmware 1.0)
4	Register R	Room Temperature Temperature value (OT60 °C)
5	Register R	Room Humidity
6	Register R	Mode Status		Variable value
7	Register R	Fan mode		Low 01 Med 02 High 03 Auto
8	Register R	Heating mode		Disabled 01 20 minutes 02 40 minutes 03 60 minutes
9	Register	R / W	Hour (setting)	From 0 to 23
10	Register	R / W	Minute (setting)	From 00 to 59

Address Type R or R/W		Variable Description Data interpretation
11 Register R / W Day of the week (setting)		0= Sunday ... 6= Saturday
51 Register R / W Temperature Set point Temperature value (from 5.0 to 35.0 °C)
52 Register R / W Eco set point Temperature value (from 5.0 to 35.0 °C)
53 Register R / W Party Set point Temperature value (from 5.0 to 35.0 °C)
54 Register R / W Mode button Confi quration		Integer value See Tab. 1.b
55 Register R / W Clock button Confi quration		Integer value
56 Register R / W Temperature sensor calibration		Temperature value (from -5.0 to +5.0 °C)
57 Register R / W Humidity senor calibration		Humidity value (from -10.0 to +10.0 rH%)
58 Register R / W Differential 0,5-1,0-1,5-2,0 °C
59 Register R / W Frost temperate From 5 to 17 °C
60 Register R / W Information menu setting		From 0 to 5
61 Register R / W Information menu – variable 1 value
62 Register R / W Information menu – variable 2 value
63 Register R / W Information menu – variable 3 value
64 Register R / W Information menu – variable 4 value
65 Register R / W Information menu – variable 5 value
69 Register R / W Mode button setting
70 Register R / W Fan button setting 00 Low		01 Med 02 High 03 Auto
71 Register R / W Heating button on setting 00 Disabled		01 20 minutes 02 40 minutes 03 60 minutes
101 Register R / W hh Time 1 Monday-Friday		00 - 23
102 Register R / W mm Time 1 Monday-Friday		00 - 59
103 Register R / W Set point T me 1 Monday-Friday		5,0 - 35,0
104 Register R / W hh Time 2 Monday-Friday		00 - 23
105 Register R / W mm Time 2 Monday-Friday		00 - 59
106 Register R / W Set point T me 2 Monday-Friday		5,0 - 35,0
107 Register R / W hh Time 3 Monday-Friday		00 - 23
108 Register R / W mm Time 3 Monday-Friday		00 - 59
109 Register R / W Set point T me 3 Monday-Friday		5,0 - 35,0
110 Register R / W hh Time 4 Monday-Friday		00 - 23
111 Register R / W mm Time 4 Monday-Friday		00 - 59
112 Register R / W Set point T me 4 Monday-Friday		5,0 - 35,0
113 Register R / W hh Time 1 Saturday-Sunday		00 - 23
114 Register R / W mm Time 1 Saturday-Sunday		00 - 59
115 Register R / W Set point T me 1 Saturday-Sunday		5,0 - 35,0
116 Register R / W hh Time 2 Saturday-Sunday		00 - 23
117 Register R / W mm Time 2 Saturday-Sunday		00 - 59
118 Register R / W Set point T me 2 Saturday-Sunday		5,0 - 35,0
119 Register R / W hh Time 3 Saturday-Sunday		00 - 23
120 Register R / W mm Time 3 Saturday-Sunday		00 - 59

Address Type R or		R/W	Variable Description Data interpretation
121 Register R / W Set		point Time 3 Saturday- Sunday	5,0 - 35,0
122 Register R / W hh		Time 4 Saturday- Sunday	00 - 23
123 Register R / W mm		Time 4 Saturday- Sunday	00 - 59
124 Register R / W Set		point Time 4 Saturday- Sunday	5,0 - 35,0

AVERTISSEMENTS