MTN6005-0001 - Thermostat SCHNEIDER - Free user manual and instructions

Product Type	Digital Thermostat
Brand	Schneider
Model	MTN6005-0001
Dimensions (W x H x D)	80 mm x 120 mm x 30 mm
Weight	0.15 kg
Power Supply	230 V AC, 50 Hz
Standby Power Consumption	< 1 W
Display Type	LCD backlit
Temperature Control Range	5°C to 35°C
Accuracy	±0.5°C
Programmable Schedules	Up to 4 periods per day, 7 days
Frost Protection	Yes (adjustable threshold)
Compatible Heating Systems	Electric, Gas, Oil, Heat Pump
Mounting	Wall-mounted (standard backplate)
Wiring	2-wire or 3-wire (voltage-free contact)
Maintenance & Cleaning	Wipe with a dry, soft cloth. Do not use liquids or abrasives.
Safety Features	Overheat protection, child lock, low battery indicator
Spare Parts & Repairability	Replaceable batteries (CR2032 for clock backup); no user-serviceable parts. Contact Schneider service for repairs.
Warranty	2 years

Frequently Asked Questions - MTN6005-0001 SCHNEIDER

How do I install the Schneider MTN6005-0001 thermostat?

Turn off power at the circuit breaker. Mount the backplate onto the wall using screws provided. Connect the wires according to your heating system (refer to wiring diagram). Attach the thermostat onto the backplate and restore power.

How do I set the time and date?

Press the Menu button. Use the arrow keys to select Time/Date. Adjust using the arrows and confirm with OK.

How can I program a weekly schedule?

Go to Menu > Schedule. Choose a day or group of days. Set up to 4 periods (e.g., Morning, Day, Evening, Night) with desired temperature and time. Save each period.

What does the frost protection function do?

Frost protection keeps your home at a minimum temperature (default 5°C) to prevent pipes from freezing when you're away. You can enable/disable and adjust the threshold in the menu.

How do I reset the thermostat to factory defaults?

Press and hold the Menu button for 10 seconds. Select Factory Reset and confirm. The thermostat will restart with default settings.

Why is my thermostat not responding?

Check if the display is blank. Replace the backup battery (CR2032) if the clock fails. For power issues, ensure the circuit breaker is on and wiring is correct. If still not responding, contact support.

Can I use this thermostat with a heat pump?

Yes, the MTN6005-0001 supports heat pumps. During installation, select Heat Pump in the system type menu. Ensure your heat pump is compatible with voltage-free contact.

How often should I clean the thermostat?

Clean the exterior with a dry, soft cloth when needed. Avoid any liquids. Do not open the device for cleaning.

What does the child lock do and how to enable it?

Child lock disables all buttons to prevent accidental changes. Enable it by pressing and holding the Up and Down arrows simultaneously for 3 seconds. Repeat to disable.

Where can I find replacement parts or get repairs?

Replacement batteries (CR2032) are widely available. For other parts or repairs, contact Schneider customer service or an authorized service center. Do not attempt to repair the thermostat yourself.

USER MANUAL MTN6005-0001 SCHNEIDER

KNX CO ^2 , humidity and temperature sensor (surface mounted)

KNX CO2, humidity and temperature sensor

Order no. MTN6005-0001

Contents

KNX CO ^2 , humidity and temperature sensor (surface mounted)....1

1 Functional characteristics .... 3

1.1 Operation 3
1.2 Benefits....3

2 Technical data 4

2.1 Technical data....4

3 The application program "CO2,humidity & temperature sensor 4216/1.0"....5

3.1 Selection in the product database 5
3.2 Communication objects 6

3.2.1 Description of objects....9

3.3 Parameters....14

3.3.1 Overview 14
3.3.2 The Readings parameter page 15
3.3.3 The CO 2 threshold parameter page 16
3.3.4 The 1, 2, 3 CO 2 thresholds parameter pages ..... 17
3.3.5 The ventilation CO 2 threshold parameter page 19
3.3.6 The CO 2 scenes parameter page....20
3.3.7 The humidity threshold parameter page 21
3.3.8 The 1, 2, 3 humidity thresholds parameter pages ...... 22
3.3.9 The Humidity ventilation parameter page 24
3.3.10 The Relative humidity scenesparameter page 25
3.3.11 Temperature threshold parameter page 26

4 Appendix....28

4.1 Hysteresis 28
4.2 Switching response of thresholds for CO_2 and humidity.....28
4.3 Fan control....29
4.4 Relative humidity 29
4.5 CO _2 guide values....30

1 Functional characteristics

The device is a combined sensor for CO_2 , temperature and humidity measurement (relative humidity).

It is designed to monitor air quality in conference/meeting rooms, offices, schools/kindergartens, passive or low energy houses and living rooms without controlled ventilation.

1.1 Operation

The device does not have to be operated manually.

The LED and the push button for the physical address are accessible when cover is removed. If necessary, the push button can be reached with a thin screwdriver via the upper ventilation slot.

CAUTION: Do not drop the device!

Severe shocks reduce the accuracy of the highly sensitive CO2 sensor.

1.2 Benefits

• Combined measurement of temperature, humidity and CO2 content in one device.
  • Power supply via bus connection, no mains power required.

2 Technical data

2.1 Technical data

Power supply:	Bus voltage
Permissible operating temperature:	0 °C... + 45°C
Power draw from bus voltage:	Max. 12 mA
Bus connection:	via bus terminal
Protection class:	III in accordance with EN 60730-1
Protection rating:	IP 20 in accordance with EN 60529
Dimensions of device:	LxWxH 74 x 74 x 30.8 (mm)

Measuring ranges:

CO_2	300 – 9999 ppm
Humidity:	1 – 100 %
Temperature:	0 – 40 °C

Accuracy:

CO2	300-1000 ppm: +/- 120 ppm
	1000-2000 ppm: +/- 250 ppm
	2000-5000 ppm: +/- 300 ppm
Humidity:	+/- 5 %
Temperature:	+/- 1 °C (depending on installation)

3 The application program "CO2, humidity & temperature sensor 4216/1.0"

3.1 Selection in the product database

Manufacturer	Schneider Electric Industries SAS
Product family	2.9 Physical sensors
Product types	2.9.05 Carbon doxide2.9.04 Humidity
Program name	KNX CO ^2 , humidity and temperature sensor

Table 1

Number of communication objects:	27
Number of group addresses:	128
Number of associations:	128

3.2 Communication objects

Table 2: Overview

No.	Function Object name		Type & DPT	Flags
				C	R	S	T
0	Physical value CO	2value	2 byte 9.008	√	√		√
1	Physical value	relative humidity	1 byte 5.001	√	√		√
2	Physical value	Temperature value	2 byte 9.001	√	√		√
3	Switching	CO2threshold 1	1 bit 1.001	√	√		√
	Valuator		1 byte 5.001 5.010
	Priority		2 bit 2.001
4	Input Disable CO	2threshold 1	1 bit 1.001	√	√	√
5	Switching	CO2threshold 2	1 bit 1.001	√	√		√
	Valuator		1 byte 5.001 5.010
	Priority		2 bit 2.001
6	Input Disable CO	2threshold 2	1 bit 1.001	√	√	√
7	Switching	CO2threshold 3	1 bit 1.001	√	√		√
	Valuator		1 byte 5.001 5.010
	Priority		2 bit 2.001
8	Input Disable CO	2threshold 3	1 bit 1.001	√	√	√
9	Value for ventilation actuator	Ventilation of CO2	5.001	√	√		√
10	Input Disable ventilation of CO	2	1 bit 1.001	√	√	√	√

C R S T

Continuation:

No.	Function Object name		Type & DPT	Flags
				C	R	S	T
11	Scene control CO	2scenes	1 byte 18.001	✓	✓		✓
12	Input Disable CO	2scenes	1 bit 1.001	✓	✓	✓
13	Switching	Humidity threshold 1	1 bit 1.001	✓	✓		✓
	Valuator		1 byte 5.001 5.010
	Priority		2 bit 2.001
14	Input Disable humidity threshold	1	1 bit 1.001	✓	✓	✓
15	Switching	Humidity threshold 2	1 bit 1.001	✓	✓		✓
	Valuator		1 byte 5.001 5.010
	Priority		2 bit 2.001
16	Input Disable humidity threshold	2	1 bit 1.001	✓	✓	✓
17	Switching	Humidity threshold 3	1 bit 1.001	✓	✓		✓
	Valuator		1 byte 5.001 5.010
	Priority		2 bit 2.001
18	Input Disable humidity threshold	3	1 bit 1.001	✓	✓	✓
19	Value for ventilation actuator	Ventilating relative humidity	1 byte 5.001 5.010	✓	✓		✓
20	Input	Disable ventilating relative humidity	1 bit 1.001	✓	✓	✓
21	Scene control Relative humidity	scenes	1 byte 18.001	✓	✓		✓
22	Input	Disable relative humidity scenes	1 bit 1.001	✓	✓	✓
				C	R	S	T

Continuation:

No.	Function Object name		Type & DPT	Flags
				C	R	S	T
23	Switching	Temperature threshold	1 bit 1.001	√	√		√
	Valuator		1 byte 5.001 5.010
	Priority		2 bit 2.001
24	Input	Disable temperature threshold	1 bit 1.001	√	√	√
25	Value for ventilation actuator	highest active ventilation value	1 byte 5.010	√	√		√
26	Switching On/Off LEDs for CO2	and humidity	1 bit 1.001	√		√
				C	R	S	T

Table 3: Communication flags

Flag	Name	Application
C	Communication	Object can communicate
R	Read	Object status can be viewed (ETS / display etc.)
S	Write	Object can receive
T	Transmit	Object can send

3.2.1 Description of objects

- Object 0 "CO _2 value"

This object sends the CO_2 content measured by the sensor (if sending via configuration is permitted).

• Object 1 "relative humidity value"

This object sends the current relative humidity measured by the sensor (if sending via configuration is permitted).

- Object 2 "Temperature value"

This object sends the temperature currently being measured by the sensor (if sending via configuration is permitted).

- Object 3 "Threshold 1 CO _2 "

Output object for the first CO_2 threshold. See Overview table.

- Object 4 "Disable CO _2 threshold 1"

Disable object for the first CO_2 threshold.

- Object 5 "CO _2 threshold 2"

Output object for the second CO_2 threshold. See Overview table.

- Object 6 "Disable CO _2 threshold 2"

Disable object for the second CO_2 threshold.

- Object 7 "CO _3 threshold 2"

Output object for the third CO_2 threshold. See Overview table.

- Object 8 "Disable CO _2 threshold 3"

Disable object for the third CO_2 threshold.

• Object 9 "Ventilation of CO₂"

Actuating value for ventilation actuator (1 byte telegram).

This object is used if ventilation is only to be activated by the CO_2 content, such as in conference rooms.

Important: The configuration of the input as a percentage value or as number from 0 to 255 is irrelevant for the ventilation actuator.

- Object 10 "Disable CO _2 ventilation"

Disable object for CO_2 dependent ventilation

1 = Disable

0 = Enable

- Object 11 "CO _2 scenes"

Transmits the CO_2 dependent scene retrieval code

Table 4

Scene no.	Retrieval code		Scene no.	Retrieval code
	Hex	Dec		Hex	Dec
1	00	0	33	20	32
2	01	1	34	21	33
3	02	2	35	22	34
4	03	3	36	23	35
5	04	4	37	24	36
6	05	5	38	25	37
7	06	6	39	26	38
8	07	7	40	27	39
9	08	8	41	28	40
10	09	9	42	29	41
11	0A	10	43	2A	42
12	0B	11	44	2B	43
13	0C	12	45	2C	44
14	0D	13	46	2D	45
15	0E	14	47	2E	46
16	0F	15	48	2F	47
17	10	16	49	30	48
18	11	17	50	31	49
19	12	18	51	32	50
20	13	19	52	33	51
21	14	20	53	34	52
22	15	21	54	35	53
23	16	22	55	36	54
24	17	23	56	37	55
25	18	24	57	38	56
26	19	25	58	39	57
27	1A	26	59	3A	58
28	1B	27	60	3B	59
29	1C	28	61	3C	60
30	1D	29	62	3D	61
31	1E	30	63	3E	62
32	1F	31	64	3F	63

- Object 12 "Lock CO _2 vent"

Disable object for the CO_2 scenes.

1 = Disable

0 = Enable

• Object 13 "Humidity threshold 1"

Output object for the first humidity threshold.

See Overview table.

- Object 14 "Disable humidity threshold 1"

Disable object for the first CO_2 humidity threshold.

• Object 15 "Humidity threshold 2"

Output object for the second humidity threshold.

See Overview table.

- Object 16 "Disable humidity threshold 2"

Disable object for the second CO_2 humidity threshold.

• Object 17 "Humidity threshold 3"

Output object for the third humidity threshold.

See Overview table.

- Object 18 "Disable humidity threshold 3"

Disable object for the third CO_2 humidity threshold.

• Object 19 "Vent relative humidity"

Actuating value for ventilation actuator (1 byte telegram).

This object is used if ventilation is only to be activated by the relative humidity, such as in a conservatory.

Important: The configuration of the input as a percentage value or as number from 0 to 255 is irrelevant for the ventilation actuator.

- Object 20 "Disable vent relative humidity"

Disable object for humidity dependent ventilation

1 = Disable

0 = Enable

- Object 21 "Relative humidity scenes"

Sends the humidity dependent scene retrieval code. See above, Table4.

- Object 22 "Disable relative humidity scenes"

Disable object for the humidity scenes.
1 = Disable
0 = Enable

• Object 23 "Temperature threshold"

Output object for the temperature threshold. See Overview table.

- Object 24 "Disable temperature threshold""

Disable object for humidity dependent ventilation 1 = Disable 0 = Enable

- Object 25 "Highest active vent value"

Actuating value for ventilation actuator (1 byte telegram). This object is used if ventilation is to be activated by CO_2 content and relative humidity.

The actuating values of object 9 and object 19 are monitored and the highest actuating is always sent.

Important: The configuration of the input as a percentage value or as number from 0 to 255 is irrelevant for the ventilation actuator.

- Object 26 "LEDs for CO2 and humidity"

Activates or deactivates the LEDs to display the CO_2 and humidity thresholds. This option is applied on the Readings parameter page.

0 = Switch LEDs off completely 1 = Operate LEDs.

3.3 Parameters

3.3.1 Overview

Table 5

Name	Description
Measured values	Settings for sending CO2 content, relative humidity and temperature
CO2 thresholds	Setting the 3 CO2 thresholds
Thresholds 1, 2, 3 CO2	Setting of response to exceeding or not reaching the relevant CO2 threshold.
Ventilating CO2	Setting of ventilation speed depending on CO2 content
CO2 scenes	Setting of scene numbers to be sent depending on CO2 content
Humidity thresholds	Setting of the 3 humidity thresholds
Humidity thresholds 1, 2, 3	Setting of response to exceeding or not reaching the relevant humidity threshold.
Ventilating humidity	Setting of ventilation speed depending on relative humidity
Humidity scenes	Setting of scene numbers to be sent depending on relative humidity
Temperature threshold	Setting of temperature threshold and reaction to exceeding or underrunning.

3.3.2 The Readings parameter page

Table 6

Designation	Values	Application
CO_2content sends on change in	not due to a change100 ppm200 ppm300 ppm500 ppm	only send cyclically (if enabled)Send if the value has changed since the last transmission by the selected amount
Send CO_2 content cyclically	do not send cyclically every minute every 2 minutes every 3 minutes...every 30 minutes every 45 minutes every 60 minutes	How often should the current measured value be resent?
Send humidity value in the event of a change in ...	not due to a change2 %3 %5 %10%	only send cyclically (if enabled)Send if the value has changed since the last transmission by the selected amount
Send humidity value cyclically	do not send cyclically every minute every 2 minutes every 3 minutes...every 30 minutes every 45 minutes every 60 minutes	How often should the current measured value be resent?
LEDs for CO2 and humidity	always offalways onswitchable via object 26	The LEDs are not usedThe LEDs display the current thresholds.If necessary, the LEDs can be activated or switched off via a switching command to object 26. Typical application:Switch LEDs off overnight with a timer.
Transmit temperature in the event of change of	not due to a change0.5 °C, 1.0 °C1.5 °C, 2.0 °C2.5 °C	only send cyclically (if enabled)Send if the value has changed since the last transmission by the selected amount

Continuation:

Designation	Values	Application
Send temperature cyclically	Do not send cyclically every minute every 2 minutes every 3 minutes ... every 30 minutes every 45 minutes every 60 minutes	At what time interval are the cyclic telegrams to be sent again?
Temperature calibration in 0.1°C stages (-64..64)	manual input: - 64 .. 64	Adjustment to temperature measurement if sent temperature deviates from actual ambient temperature.Example: Temperature = 20°C sent temperature = 21°CA adjustment value = 10 (i.e. 10 x 0.1°C)

3.3.3 The CO_2 threshold parameter page

Essential condition for setting thresholds:

Threshold 1 must always be smaller than threshold 2 and threshold 2 smaller than threshold 3.

Table 7

Designation	Values	Application
CO2threshold 1(in 10 ppm)	manual input: 10 .. 255	Input of first CO2threshold value in 10 ppm.Example:20 is equivalent to 200 ppm
Hysteresis	100 ppm200 ppm300 ppm500 ppm	The hysteresis prevents frequent switching after small changes in readings.See appendix:Hysteresis
CO2threshold 2(in 10 ppm)	manual input: 10 .. 255	Input of second CO2threshold
Hysteresis	see above	see above
CO2threshold 3(in 10 ppm)	manual input: 10 .. 255	Input of third CO2threshold

3.3.4 The 1, 2, 3 CO₂ thresholds parameter pages

The parameters are identical for all three CO_2 thresholds.

Threshold 1 is given as an example.

Table 8

Designation	Values	Application
Telegram type for CO2 threshold 1	Switching command	The threshold sends: Switching telegrams
	Priority	Priority telegrams
	Value as percentage	A percentage value Important: See appendix Fan control
	Value from 0 to 255	Any desired value between 0 and 255
If CO2 threshold 1 is exceeded	no telegram send following telegram once send cyclically	Response to exceeding threshold
telegram		What is sent if the threshold is exceeded or underrun? The parameter values depend on the type of telegram selected: With switching command
	Switch-on command	With Priority
	Switch-off command
	no priority
	OFF (up)
	ON (down)
	0%, 5%, 10%, 15%, 20%, 25%
	30%, 35%, 40%, 45%, 50%
	55%, 60%, 65%, 70%, 75%
	80%, 85%, 90%, 95%, 100%
	manual input: 0 .. 255	With Percentage value
If CO2 threshold 1 is underrun	no telegram send following telegram once send cyclically	Response to underrunning threshold
telegram	see above	see above
Cycle time for CO2 threshold 1 (if available)	every minute, every 2 minutes every 3 minutes, every 5 minutes every 10 minutes, every 15 minutes every 20 minutes, every 30 minutes every 45 minutes, every 60 minutes	At what time interval are the cyclic telegrams to be sent again?

Continuation:

Designation	Values	Application
Behaviour when setting the lock	Ignore lockdo not sendas with underrun thresholdas with exceeded threshold	This threshold cannot be disabledThe threshold will not send as long as the disable object is setWhen setting the disable object, the threshold sends the same telegram as with threshold underrun.When setting the disable object, the threshold sends the same telegram as with exceeding the threshold.
Behaviour when cancelling the lock	do not sendupdate	no reactionsend current status

3.3.5 The ventilation CO_2 threshold parameter page

Table 9

Designation	Values	Application
Send given value:	(Input as number from 0 to 255)(Input as percentage)	Input format for fan control.This setting is not relevant for the actuator.
if CO_2 below threshold 1	manual input 0..255 or 0..100 %	Setting of desired fan speeds depending on CO_2 content.
if CO_2 between threshold 1 and 2	manual input 0..255 or 0..100 %
if CO_2 between threshold 2 and 3	manual input 0..255 or 0..100 %
if CO_2 greater threshold 3	manual input 0..255 or 0..100 %
Behaviour when setting the lock	Ignore lockdo not sendsend following value	This threshold cannot be disabledThe threshold will not send as long as the disable object is setSend a value when setting disable object.
Value if disabled	0%, 5%, 10%, 15%, 20%, 25%30%, 35%, 40%, 45%, 50%55%, 60%, 65%, 70%, 75%80%, 85%, 90%, 95%, 100%	Value to be sent when the disable object is set
Behaviour when cancelling the lock	do not sendupdate	no reaction send current fan actuating value

3.3.6 The CO_2 scenes parameter page

Send given scene if:

Table 10:

Designation	Values	Application
CO_2 below threshold 1	Scene 1 .. scene 64	Setting of scene numbers to be sent depending on CO_2 content.
CO_2 between threshold 1 and 2	Scene 1 .. scene 64
CO_2 between threshold 2 and 3	Scene 1 .. scene 64
CO_2 greater threshold 3	Scene 1 .. scene 64
Behaviour when setting the lock	Ignore lockdo not sendsend scene	The scene object cannot be disabledThe scene object will not send as long as the disable object is setSend a value when setting disable object.
scene if disabled	Scene 1 .. scene 64	Scene to be sent when the disable object is set
Behaviour when cancelling the lock	do not sendupdate	no reaction send current scene

3.3.7 The humidity threshold parameter page

Essential condition for setting thresholds:

Threshold 1 must always be smaller than threshold 2 and threshold 2 smaller than threshold 3.

Table 11

Designation	Values	Application
Relative humidity threshold 1 (in %)	Manual input 0 ..0.100	Input of the first humidity threshold value in percent.
Hysteresis	1 %, 2 %, 3 %5 %, 7 %, 10 %	The hysteresis prevents frequent switching after small changes in readings.See appendix: Hysteresis
Relative humidity threshold 2 (in %)	Manual input 0 ..0.100	Input of the second humidity threshold value in percent.
Hysteresis	1 %, 2 %, 3 %5 %, 7 %, 10 %	see above.
Relative humidity threshold 3 (in %)	Manual input 0 ..0.100	Input of the third humidity threshold value in percent.
Hysteresis	1 %, 2 %, 3 %5 %, 7 %, 10 %	see above.

3.3.8 The 1, 2, 3 humidity thresholds parameter pages

Table 12

Designation	Values	Application
Telegram type for humidity threshold 1	Switching command	The threshold sends: Switching telegrams
	Priority	Priority telegrams
	Value as percentage	A percentage value Important: See appendix Fan control
	Value from 0 to 255	Any value between 0 and 255
If humidity threshold 1 is exceeded	no telegram send following telegram once send cyclically	Response to exceeding threshold
telegram		What is sent if the threshold is exceeded or underrun? The parameter values depend on the type of telegram selected: With switching command
	Switch-on command	With Priority
	Switch-off command
	no priority
	OFF (up)
	ON (down)
	0%, 5%, 10%, 15%, 20%, 25%
	30%, 35%, 40%, 45%, 50%
	55%, 60%, 65%, 70%, 75%
	80%, 85%, 90%, 95%, 100%
	manual input: 0 .. 255	With Value from 0 to 255
If humidity threshold 1 is underrun	no telegram send following telegram once send cyclically	Response to underrunning threshold
telegram	see above	see above
Cycle time for humidity threshold 1 (if available)	every minute, every 2 minutes every 3 minutes, every 5 minutes every 10 minutes, every 15 minutes every 20 minutes, every 30 minutes every 45 minutes, every 60 minutes	At what time interval are the cyclic telegrams to be sent again?

Continuation:

Designation	Values	Application
Behaviour when setting the lock	Ignore lockdo not sendas with underrun thresholdas with exceeded threshold	This threshold cannot be disabledThe threshold will not send as long as the disable object is setWhen setting the disable object, the threshold sends the same telegram as with threshold underrun.When setting the disable object, the threshold sends the same telegram as with exceeding the threshold.
Behaviour when cancelling the lock	do not sendupdate	no reactionsend current status

3.3.9 The Humidity ventilation parameter page

Table 13

Designation	Values	Application
Send given value:	(Input as number from 0 to 255)(Input as percentage)	Input format for fan control.This setting is not relevant for the actuator.
if relative humidity is below threshold 1	manual input 0..255 or 0..100 %	Ventilation speeds depending on relative humidity
if relative humidity between thresholds 1 and 2	manual input 0..255 or 0..100 %
if relative humidity between thresholds 2 and 3	manual input 0..255 or 0..100 %
if relative humidity is above threshold 3	manual input 0..255 or 0..100 %
Behaviour when setting the lock	Ignore lockdo not sendsend following value	This threshold cannot be disabledThe threshold will not send as long as the disable object is setSend a value when setting disable object.
Value if disabled	0%, 5%, 10%, 15%, 20%, 25%30%, 35%, 40%, 45%, 50%55%, 60%, 65%, 70%, 75%80%, 85%, 90%, 95%, 100%	Value to be sent when the disable object is set
Behaviour when cancelling the lock	do not sendupdate	no reactionsend current fan actuating value

3.3.10 The Relative humidity scenesparameter page

Send given scene if:

Table 14:

Designation	Values	Application
relative humidity is below threshold 1	Scene 1 .. scene 64	Setting of scene numbers to be sent depending on relative humidity
relative humidity between thresholds 1 and 2	Scene 1 .. scene 64
relative humidity between thresholds 2 and 3	Scene 1 .. scene 64
relative humidity is greater than threshold 3	Scene 1 .. scene 64
Behaviour when setting the lock	Ignore lockdo not sendsend scene	The scene object cannot be disabledThe scene object will not send as long as the disable object is setSend a value when setting disable object.
scene if disabled	Scene 1 .. scene 64	Scene to be sent when the disable object is set
Behaviour when cancelling the lock	do not sendupdate	no reaction send current scene

3.3.11 Temperature threshold parameter page

Designation	Values	Application
Temperature threshold	1 °C .. 40 °CDefault value = 15 °C	Input of desired temperature threshold in °C
Hysteresis	1.0 °C, 1.5 °C2.0 °C, 2.5 °C	The hysteresis prevents frequent switching after small temperature changes.See appendix: Hysteresis
Telegram type for temperature threshold	Switching commandPriorityValue as percentageValue from 0 to 255	The threshold sends:Switching telegramsPriority telegramsAny percentage valueAny value between 0 and 255
If temperature threshold is underrun	no telegram send following telegram once send cyclically	Response to exceeding threshold
telegram	Switch-on commandSwitch-off commandno priorityOFF (up)ON (down)0%, 5%, 10%, 15%, 20%, 25%30%, 35%, 40%, 45%, 50%55%, 60%, 65%, 70%, 75%80%, 85%, 90%, 95%, 100%manual input: 0 .. 255	What is sent if the threshold is exceeded or underrun?The parameter values depend on the type of telegram selected:With switching commandWith PriorityWith Percentage valueWith Value from 0 to 255
If temperature threshold underrun	no telegram send following telegram once send cyclically	Response to underrunning threshold
telegram	see above	see above
Cycle time for temperature threshold(if available)	every minute, every 2 minutesevery 3 minutes, every 5 minutesevery 10 minutes, every 15 minutesevery 20 minutes, every 30 minutesevery 45 minutes, every 60 minutes	At what time interval are the cyclic telegrams to be sent again?

Continuation:

Designation	Values	Application
Behaviour when setting the lock	Ignore lockdo not sendas with underrun thresholdas with exceeded threshold	This threshold cannot be disabledThe threshold will not send as long as the disable object is setWhen setting the disable object, the threshold sends the same telegram as with threshold underrun.When setting the disable object, the threshold sends the same telegram as with exceeding the threshold.
Behaviour when cancelling the lock	do not sendupdate	no reactionsend current status

4 Appendix

4.1 Hysteresis

The hysteresis determines the difference between switching on and off value. Here, it is completely negative.

Without hysteresis, the threshold control would switch on and off continuously provided the actual value is within the setpoint value range.

Example CO_2 threshold:

Threshold 1 = 500 ppm, hysteresis = 100 ppm.

The threshold is exceeded if the actual value rises to, or above, 500 ppm.

It is underrun if the actual value falls below the "hysteresis setpoint value"

i.e. 500 ppm - 100 ppm = 400 ppm drops.

4.2 Switching response of thresholds for CO_2 and humidity

graph TD
    A["Threshold 1"] --> B["Hysteresis 1"]
    B --> C["Threshold 2"]
    C --> D["Hysteresis 2"]
    D --> E["Threshold 3"]
    E --> F["Measured value increases"]
    F --> G["Measured value falls"]

    subgraph Threshold 1
        B
        D
    end

    subgraph Threshold 2
        C
        D
    end

    subgraph Threshold 3
        E
        F
    end

    note1["If threshold 3 is exceeded... send"]
    note2["Hysteresis 3"]
    note3["If threshold 2 is exceeded... send"]
    note4["Hysteresis 2"]
    note5["If threshold 1 is exceeded... send"]
    note6["Hysteresis 1"]
    note7["If threshold 1 is under-run... send"]
    note8["Hysteresis 3"]
    note9["If threshold 3 is under-run... send"]
    note10["Hysteresis 2"]
    note11["Hysteresis 1"]

The telegram of the last exceeded/under run threshold is sent.

If several thresholds are exceeded from one measurement cycle to the next then the telegrams are sent at an increasing value (from thresholds 1-3) whereas with cyclical sending, only the telegram for the last exceeded threshold is sent cyclically. The same applies with falling values.

4.3 Fan control

Note the following for fan control using percentage values:

The KNX sensor sends a percentage value as the control variable for each threshold.

This control variable (in accordance with the set threshold value) is transferred to the fan coil actuator as a fan stage between 0 and 3.

Important: The sent control variable should always be higher than the threshold setting of the fan coil actuator.

Example:

Threshold value for Fan stage	Set values with KNX sensor	Recommended values for the fan coil actuator
1	20 %	10 %
2	50 %	40 %
3	80 %	70 %

If fan stage 2 is selected using the button, the relevant object

(object 9 or 19) sends the control variable 50 %.

As the threshold value for stage 2 in the fan coil actuator is set at 40% , the received control variable of 50% is clearly allocated to fan stage 2 and accepted by the fan.

4.4 Relative humidity

Relative humidity is a measurement for the saturation of air with water vapour.

This is expressed as the relationship to the maximum amount absorbed at the corresponding temperature.

Example: A relative humidity of 60 % means that the air contains 60 % of the maximum absorbable amount of water vapour.

At 100 % the air is completely saturated and cannot absorb any more humidity.

Condensation or mist are produced if the volume of available water vapour exceeds this 100% threshold.

The ability of air to absorb water vapour depends on temperature.

Warm air can absorb more water vapour than cold air.

4.5 CO_2 guide values

All values in ppm (parts per million)