Siemens RDS120 User manual

RDS120, RDS120.B
Smart Thermostat
User Guide
A6V10733807_enUS_c
Smart Infrastructure
12/28/2021

2 | 40
A6V10733807_enUS_c
Table of Contents
1 About this User guide...................................................................................5
1.1 Revision history...............................................................................................5
1.2 Reference documents.....................................................................................5
1.3 Before starting.................................................................................................5
2 Getting started with the thermostat ............................................................7
2.1 Thermostat display overview...........................................................................7
2.2 Home screen icon overview............................................................................9
3 Presence detection .....................................................................................11
3.1 Presence detection using the built-in PIR sensor .........................................11
3.2 Approach detection .......................................................................................13
4 Operating the thermostat from the thermostat main unit.......................14
4.1 Temperature control......................................................................................14
4.2 Operating modes...........................................................................................15
4.2.1 Operating modes overview............................................................15
4.2.2 Operating modes in a schedule.....................................................16
4.3 WLAN connection..........................................................................................16
4.4 Screen lock protection...................................................................................18
4.4.1 Locking the home screen...............................................................18
4.4.2 Creating an administrator password..............................................19
4.5 BACnet HMI access (RDS120.B only)..........................................................19
4.6 Controlling humidifier/dehumidifier................................................................20
4.7 Fan control ....................................................................................................20
4.8 Turning on/off the touch sound .....................................................................21
4.9 Changing the display language.....................................................................21
4.10 Naming a room..............................................................................................21
4.11 Changing a time zone ...................................................................................21
4.12 Checking basic information about the thermostat.........................................21
4.13 Software updates ..........................................................................................22
5 Green leaf.....................................................................................................23
6 Air quality control........................................................................................24
7 Operating the thermostat from the mobile application...........................25
7.1 Downloading the application .........................................................................25
7.2 Account creation and pairing.........................................................................25
7.3 Exploring the app using demo mode.............................................................26
7.4 Viewing and controlling devices in different locations...................................26
7.4.1 Viewing and filtering devices .........................................................26
7.4.2 Widgets..........................................................................................27
7.4.3 Switching between Away and At home........................................28
7.4.4 Setting schedules...........................................................................28
7.4.5 Switching between Heating and Cooling .......................................29
7.4.6 Controlling humidifier/dehumidifier ................................................29
7.5 Checking device notifications........................................................................29

A6V10733807_enUS_c
3 | 40
7.5.1 Turning on/off universal contact monitoring...................................29
7.5.2 Turning on/off condensation monitoring ........................................30
7.5.3 Turning on/off air filter reminder.....................................................30
7.6 Device setup..................................................................................................31
7.6.1 Configuring device locations..........................................................31
7.6.2 Multiple user management ............................................................31
7.6.3 Restarting devices .........................................................................32
7.6.4 Revoking devices...........................................................................32
7.6.5 Viewing device information............................................................32
7.7 Viewing mobile app info................................................................................32
8 Appendices..................................................................................................34
8.1 Frequently asked questions ..........................................................................34
8.1.1 What should I do if I forget the screen lock code?.........................34
8.1.2 What if two users change the same setting at the same time?.....34
8.1.3 Will the thermostat work if the connection to the cloud is lost?.....34
8.1.4 Why does the scheduled Eco mode change to Comfort? .............34
8.1.5 What is the difference between Administrated WLAN and Private
WLAN?...........................................................................................35
8.1.6 What if the WLAN network is down during software updates?......35
8.1.7 Can I change the Green leaf settings?..........................................35
8.1.8 Can I change the air quality measurement standard?...................35
8.1.9 Where can I check the current time on the thermostat?................35
8.1.10 Can the thermostat display the time correctly if there is no WLAN
connection?....................................................................................36
8.1.11 Can I set the time manually?.........................................................36
8.1.12 Why is the time displayed incorrectly even though the thermostat is
added to a WLAN network?...........................................................36
8.1.13 How does the built-in PIR sensor work?........................................36
8.1.14 What should I do if I forget my account’s password? ....................36
8.1.15 I have registered an account but cannot log in..............................36
8.1.16 I have signed up but have not received a confirmation email. ......36
8.1.17 Can I create more than one user account in the mobile app?.......36
8.1.18 How long are date and time valid, if power fails and the thermostat
has no connection to the cloud?....................................................36
8.1.19 How long are settings saved in the thermostat if power fails? ......37
8.1.20 How does Free cooling work?......................................................37
8.2 Technical specifications ................................................................................37
8.3 Regulatory information..................................................................................37
8.3.1 ISED Regulations (Canada) ..........................................................37
8.3.2 FCC Regulations (USA).................................................................38
8.4 EULA.............................................................................................................38
Index ......................................................................................................................39

About this User guide
Revision history
1
A6V10733807_enUS_c
5 | 40
1 About this User guide
1.1 Revision history
Edition
Date
Changes
5
December 2021
Updated operation information about the mobile
application.
4
June 2021
●Changed temporary temperature setpoint
description per function change.
●Added another lock schema information
●Added BACnet object information
3
July 2018
Third version.
●Added information on Fan min. ON time.
●Added information on time synchronization and
setting valid period after power failure.
●Added information on Free cooling.
2
April 2018
Second version.
●Added reference document Submittal Sheet.
1
December. 2017
First version.
1.2 Reference documents
Ref.
Document title
Document
[1]
Mounting instructions
Multi-lingual version
[2]
Quick guide
en
es
fr
[3]
Data sheet
en
es
[4]
Commissioning
en
es
[5]
Submittal sheet
en
es
1.3 Before starting
The table below lists the third-party trademarks used in this document and their
legal owners. The use of trademarks is subject to international and domestic
provisions of the law.
Trademarks

About this User guide
Before starting
1
6 | 40
A6V10733807_enUS_c
Trademarks
Legal owner
App Store®
Apple Inc.
Google Play™
Google Inc.
Wi-Fi®
Wi-Fi Alliance
All product names listed in the table are registered (®) or not registered (™)
trademarks of the owner listed in the table. We forgo the labeling (e.g. using the
symbols ® and ™) of trademarks for the purposes of legibility based on the
reference in this section.
This document may be duplicated and distributed only with the express permission
of Siemens.
Notations
Special notations are shown in this document as follows:
⊳
Specifies the requirements that must be met before performing this
procedure.
1.
2.
Procedures must be performed in the specified order.
[➙X]
Reference to a page number
>
Relation sign and for identification between steps in a sequence,
e.g., Menu bar >Help > Help topics.
Symbol identifications
WARNING
This is the symbol for hazard. It warns of Risks of personal injury. Comply with
all measures designated by this symbol to prevent injury or death.
NOTICE
This symbol identifies an important notice.
The 'i' symbol identifies supplementary information and tips.
It is important to read the documents supplied with or ordered at the same time as
the products (equipment, applications, tools, and so on) carefully and in full.
Before getting started, ensure there is an internet connection, a valid email address
and a smartphone readily available.
Please direct any comments regarding this document to
sbt_technical.editor.[email protected].
Siemens assumes no liability to the extent allowed under the law for any losses
resulting from a failure to comply with the aforementioned points or for the
improper compliance of the same.
Copyright
Conventions for text
marking
Before starting

Getting started with the thermostat
Thermostat display overview
2
A6V10733807_enUS_c
7 | 40
2 Getting started with the thermostat
2.1 Thermostat display overview
Icon
Description
1
Tap to display detailed information and additional settings.
2
Displays whether the system is in an energy-optimized mode. If the leaf
is red, predefined settings were changed. Tap the red leaf to restore the
energy-saving mode. The leaf turns green.
3
Room temperature.
Normal display

Getting started with the thermostat
Thermostat display overview
2
8 | 40
A6V10733807_enUS_c
Icon
Description
4
Tap to toggle between At home and AWAY.
5
Displays whether the thermostat is following a schedule ( ) or
following the setpoint changes permanently ( ). Following a schedule
can mean the following:
●If there is network connection and the schedule has been set, the
thermostat follows the schedule.
–Temporary setpoint changes within a schedule last for at least
one hour. If several temporary changes occur within one hour,
the thermostat extends an additional one hour as of the last
temporary change.
–If the next switching point is not scheduled after one hour, the
thermostat still works following the temporary setpoint change
until the next switching point is scheduled.
–If the next switching point is scheduled within one hour, the
thermostat doesn't switch to the scheduled setpoint until the last
temporary setpoint change has lasted for one hour.
●If there is network connection but no schedule has been set, the
thermostat follows the default schedule in the system. For more
information about the default schedule, see Setting schedules.
●If there is no network connection or valid time, the thermostat cannot
retrieve schedule information from the Cloud. It will operate in the
Comfort mode.
6
Tap to select a fan mode (AUTO/ON).
7
Tap or slide to change the room temperature setpoint.
Idle display

Getting started with the thermostat
Home screen icon overview
2
A6V10733807_enUS_c
9 | 40
Icon
Description
1
Measured relative humidity
2
Shows room air quality:
●If the icon is green, the air quality is good.
●If the icon is orange, the air quality is average.
●If the icon is red, the air quality is poor.
In order to ensure that the room air quality is measured accurately
when the room is closed for a long time, it is recommended to force air
circulation such as opening a window.
3
Displays whether the system is in an energy-optimized mode. If the leaf
is red, predefined settings were changed. Tap the red leaf to restore the
energy-saving mode. The leaf turns green.
4
Measured room temperature.
NOTE: The icons displayed under the idle mode may differ for different scenarios.
For example, the outside air temperature icon may also be displayed on the
screen if you’ve connected an external outside air temperature sensor and
configured it correctly.
2.2 Home screen icon overview
Icon
Description
The device is connected to the cloud server but not associated with an
account.
The fan icon. Fan status could be ON or AUTO. It is indicated by the
text under the icon.
At home mode is on.
AWAY mode is active.
Displays when the system works in an energy-optimized mode. If the
leaf is red, it means that some pre-defined settings have been changed.
Tap the red leaf to restore to the energy-saving mode. The leaf turns
green.
Temperature setpoint slider. Icon color changes as setpoint is changed:
●Slider changes to orange when setpoint is moved to a point that is
higher than the current room temperature and the system enters
heating mode to warm up the room.
●Slider changes to blue when setpoint is moved to a point that is
lower than the current room temperature and the system enters
cooling mode to cool down the room.
●If the system has reached setpoint and is idle, the slider color stays
white.
NOTE: The condition of switching between heating and cooling modes
is that the thermostat has been configured accordingly and then the
thermostat responds based on the background logical processing of the
comparison between the current room temperature and the heating and
cooling setpoint for the current mode.
Relative room humidity
The thermostat operates under a schedule. If a schedule has not been
set, the thermostat operates with the default schedule. This default
schedule may be the system default or may be specific under
Advanced Settings > Optimization.

Getting started with the thermostat
Home screen icon overview
2
10 | 40
A6V10733807_enUS_c
Icon
Description
When this icon is toggled on, temporary change of fan settings only
takes effect during the current scheduled mode and will be overridden to
the scheduled settings when the next scheduled mode starts, however,
temporary temperature setpoint changes may be effective across
scheduled modes. See more information about temporary temperature
setpoint changes in Thermostat display overview [➙7].
NOTE: If the thermostat has not been connected to a WLAN network, it
cannot read the real time from the network and thus cannot follow a
schedule. In this case, it always works under the Comfort mode.
User overridden. Temporary setpoint changes or fan settings are
effective if this icon is toggled on.
Tap to display options, such as Operating mode, Settings and
Advanced Settings.
Indicates the room air quality is good.
Indicates the room air quality is average.
Indicates the room air quality is poor.
Indicates the outside air temperature. The temperature value is
displayed beside this icon. Note that this value is valid only if you’ve
connected an external outside air temperature sensor, configured it
correctly and the sensor itself can provide valid values.

Presence detection
Presence detection using the built-in PIR sensor
3
A6V10733807_enUS_c
11 | 40
3 Presence detection
3.1 Presence detection using the built-in PIR sensor
By using a built-in presence detection sensor (also called PIR (Passive infrared
detector) sensor), the thermostat detects occupancy and then does the following:
●Activates idle display. When no operations are performed, the thermostat
detects presence in room. Upon presence, it displays information such as room
temperature, room air quality and relative room humidity. If unoccupied, it turns
off the screen.
●Changes the operating mode from Unoccupied to Comfort. If presence is
detected in a formerly unoccupied room during a scheduled Unoccupied
period, the thermostat switches to Comfort automatically until the next
scheduled mode starts. However, this function is disabled by default and must
be enabled manually if so desired.
Sensor location
1
The location of the PIR sensor. It is a black area if seen from the front of the
front module.
Sensor detection range

Presence detection
Presence detection using the built-in PIR sensor
3
12 | 40
A6V10733807_enUS_c
A
The width of each cell. It is 80 cm (31 in).
B
The thermostat.
C
The height of each cell. It is 80 cm (31 in).
D
The area that the PIR sensor can detect.
Change from Unoccupied to Comfort when an unoccupied room
becomes occupied
1. On the Home screen, tap , tap and then tap .
2. If prompted, enter the administrator password.
3. Tap , tap , and then tap . Scroll down and tap Room presence detector.
4. Drag the slider to the right.

Presence detection
Approach detection
3
A6V10733807_enUS_c
13 | 40
3.2 Approach detection
The thermostat has a built-in approach sensor. It can detect someone approaching
the thermostat. If activity is sensed within 10 cm, it will switch from its idle screen to
the main home screen with full temperature and setpoint display.
Sensor position
1
The location of the approach sensor.

Operating the thermostat from the thermostat main unit
Temperature control
4
14 | 40
A6V10733807_enUS_c
4 Operating the thermostat from the
thermostat main unit
4.1 Temperature control
The thermostat acquires the room temperature using the built-in sensor and/or the
external room temperature sensor, and maintains the setpoint by delivering control
commands to heating and/or cooling equipment. If no external room temperature
sensor is connected or if the input value of the external sensor is invalid, only the
built-in sensor is used to provide values for the thermostat. If the external sensor is
connected and can provide valid values with the built-in sensor, the thermostat
displays the average value of the built-in and external sensors.
On the home screen, the current room temperature is displayed and the
temperature setpoint can be changed as desired. The units can be selected
between °C and °F (the default unit).
NOTICE
After the initial setup of the thermostat, the displayed room temperature may not
be correct because the temperature sensors need time for the calibration. Wait for
at least one hour for the calibration.
Adjust the temperature setpoint on the home screen
●From the Home screen, drag the temperature slider to the right to increase the
temperature setpoint, or to the left to decrease the temperature setpoint.
Change the temperature unit
1. From the Home screen, tap , and then tap .
2. Tap and then tap to change from Fahrenheit to Celsius, or tap to
change from Celsius to Fahrenheit.

Operating the thermostat from the thermostat main unit
Operating modes
4
A6V10733807_enUS_c
15 | 40
4.2 Operating modes
4.2.1 Operating modes overview
Operating
mode
Description
At home
This mode lets the thermostat know the space is now occupied.
Within this mode, you can choose where the thermostat
follows a schedule, or toggle to and have the thermostat
operate at a specified setpoint indefinitely. See Thermostat
display overview [➙7] for more detailed information about how
the thermostat operates in or .
AWAY
This mode lets the thermostat know that space is no longer
occupied and switches to the energy saving mode; the same as
set up in Unoccupied mode using the mobile app.
AUTO
This commands the thermostat and the controlled HVAC system
to switch between heating and cooling. This is the default
setting.
NOTE: it is different from on the Home screen. For more
information about the functions of , see Operating modes in
a schedule [➙16].
HEAT ( )
Puts thermostat and the controlled HVAC system into Heating
only operation.
COOL ( )
Puts the thermostat and the controlled HVAC system into
Cooling only operation.
OFF
Depending on thermostat setup, this mode results in:
●Controlled HVAC system turns off completely.
●The thermostat is set to maintain the space within preset
limits to avoid frost or heat damage or excessively low or
high humidity. For more information about the protection
setpoint, see Commissioning.
NOTE: If the heating or cooling stage is set to zero during the initial setup, OFF
mode is the only available option from the Operating mode page.
Switch to OFF mode
●From the Home screen, tap , and then tap OFF on the Operating mode page.
NOTE: To awake the thermostat from the OFF mode, tap the screen.
Change thermostat behavior in OFF mode
1. From the Home screen, tap , tap and then tap .
2. If prompted, enter the administrator password.
3. Tap , tap , and then tap Off/protection configuration.
4. Tap either Off or Off/protection configuration.
Switch between At home and AWAY modes
●From the Home screen, tap to switch from At home to AWAY.
●Tap to switch from AWAY to At home.
Change the default AUTO mode
1. From the Home screen, tap .
2. On the Operating mode page, tap either HEAT ( ), COOL ( ) or OFF.

Operating the thermostat from the thermostat main unit
WLAN connection
4
16 | 40
A6V10733807_enUS_c
NOTE: To modify advanced settings on the heating or cooling mode, see
Commissioning.
4.2.2 Operating modes in a schedule
Operating mode overview
Operating mode
Description
Comfort
Maintains comfortable settings in controlled space during
occupancy and activities.
Economy
Using set back (set up) settings, maintains balance in comfort
during night time or inactivity and reduces energy
consumption.
Unoccupied
Saves energy when space is unoccupied for extended
periods.
These operating modes have different temperature, humidification,
dehumidification and air quality setpoints. These setpoints can be changed by
choosing Advanced Settings > Optimization. Unlike the humidification setpoint or
dehumidification setpoint, the temperature setpoint can be adjusted directly from
the thermostat home screen or using the mobile app.
Time scheduling of these operating modes (Comfort, Economy and Unoccupied)
can only be done on the mobile app but the schedule can be initiated on the
thermostat itself. If a set point is overridden during a time schedule period, that
change will revert to the scheduled setting during the next transition. Override
information is visible on both the thermostat screen and the mobile app.
NOTE: See Setting schedules for more details about scheduling.
Switch the thermostat to work following a schedule
●From the Home screen, tap if is not displayed on the screen.
NOTE: Unlike when a schedule is running, all the changes hold indefinitely if
is toggled on.
4.3 WLAN connection
Connecting to a WLAN network allows the thermostat to be connected to the cloud
server and be controlled from a smartphone. Depending on how thermostat
internet connection is set up, go to Advanced Settings or Settings to manage the
WLAN connection:
●If Private WLAN (home use) is selected, go to Settings.
●If Administrated WLAN * (commercial use) is selected, go to Advanced
Settings.
Connect to a network
1. If the thermostat is selected for commercial application (common wireless
infrastructure), do the following:
–From the Home screen, tap , and then tap . The Advanced Settings
page displays.
–If required, enter the administrator password.
–Tap , and then tap . Wait for the thermostat to discover the networks
nearby.
2. If the thermostat is selected for residential application (individual wireless
infrastructure), do the following:

Operating the thermostat from the thermostat main unit
WLAN connection
4
A6V10733807_enUS_c
17 | 40
–From the Home screen, tap , and then tap until the Settings page
displays.
–Tap , and then tap . Wait for the thermostat to discover the networks
nearby.
3. Tap the desired network. If necessary, tap or to scroll through the
networks to select one.
4. For secured networks, enter the selected password, then tap Connect.
Note: For more information about the administrator password, see Creating an
administrator password [➙19].
Manually add a network
1. If the thermostat is selected for commercial application:
–On the Advanced Settings page, tap , tap , and then tap to scroll
down to find and tap Add Network.
2. If the thermostat is selected for residential application:
–On the Settings page, tap , tap , and then tap to scroll down to find
and tap Add Network.
3. Enter the Network name (SSID) information.
4. To select a security type, tap the Security field.
5. Tap Connect.
6. If prompted, enter the relevant password, and then tap Connect.
Configure current network settings
1. If the thermostat is selected for commercial application:
–On the Advanced Settings page, tap and then tap . The current
network displays on the screen.
2. If the thermostat is selected for residential application:
–On the Settings page, tap and then tap . The current network displays
on the screen.
3. Tap Network Settings. The default DHCP (Dynamic host configuration
protocol) setting page displays on the screen.
–If necessary, tap or to scroll through and view other network DHCP
settings like Preferred DNS.
–To customize the current network settings, tap Manual, select a field, or tap
or to scroll to the desired field, and then enter a new setting.
Connecting to a network by button
A WPS (Wi-Fi Protected Setup) compatible router allows push button wireless
network set up. Please consult its manual for location of the WPS button.
Connect to a network by push button
1. If the thermostat is selected for commercial application:
–On the Advanced Settings page, tap , tap , and then tap until Push
Button Setup appears.
2. If the thermostat is selected for residential application:
–On the Settings page, tap , tap , and then tap until Push Button
Setup appears.

Operating the thermostat from the thermostat main unit
Screen lock protection
4
18 | 40
A6V10733807_enUS_c
3. Tap Push Button Setup, and then press the WPS button on the WPS-
supported router to start the discovery of the thermostat.
4. On the thermostat, tap and then tap Connect.
5. Tap OK once the thermostat is connected to the network successfully.
4.4 Screen lock protection
4.4.1 Locking the home screen
A numeric screen code can be set to lock the home screen to protect it from
tampering.
Two lock schemas are available: screen lock and public area lock. Use the former
to lock the screen from any operation. Use the latter to lock the screen in public
area where it is possible to change room temperature setpoint temporarily and
restore the energy-saving mode if the leaf on the screen turns red.
Apart from using the screen code to unlock the screen, the administrator password
(if set) can be used to unlock the screen.
Create a screen lock code
1. From the Home screen, tap , then tap .
2. Tap , tap and then tap Activate.
3. Tap Screen lock or Public area lock as needed.
4. Enter a code consisting of at least six numbers, and then tap OK.
5. Tap OK again to confirm.
Change to another lock schema
1. If the current lock schema is Screen lock, tap any area on the screen, enter
the screen lock code directly and then tap OK. If the current lock schema is
Public area lock, tap from the screen and then enter the set code.
2. From the Home screen, tap , then tap .
3. On the Settings page, tap .
4. Tap , and then change to the other lock schema as needed.
The newly-selected lock schema is highlighted with a tick mark.
Changing lock schema doesn't change the screen lock code.
Unlock the home screen
●On the Home screen, enter the screen lock code directly and then tap OK.
●If an administration password has been set, tap the question mark on the
screen, and then tap Log in as administrator.
NOTE: There is no limit of number of attempts to enter the numeric code. In case
the screen lock is lost, the administrator password (if set) can be used to unlock
the screen. For more information, see What should I do if I forget the screen lock
code? [➙34]
Modify a screen lock password
1. On the Settings page, tap .
2. Tap and then tap Change. Specify a new numeric lock of six numbers, and
then tap OK.
3. Tap OK to confirm.

Operating the thermostat from the thermostat main unit
BACnet HMI access (RDS120.B only)
4
A6V10733807_enUS_c
19 | 40
Remove a screen lock password
1. On the Settings page, tap .
2. Tap , tap Deactivate, and then tap OK to confirm.
4.4.2 Creating an administrator password
NOTICE
If an administrator password is lost, there is no way to recover it.
If the thermostat is selected for commercial application, setting an administrator
password can help prevent unauthorized access to Advanced Settings if it is
installed in a public place. The password can be set in the setup wizard when the
thermostat is powered the first time. It can be modified, deleted or set again under
Advanced Settings.
Actions protected by the administrator password are listed below as well as under
Advanced Settings.
●Checking the basic information about the thermostat.
●Viewing/Using the activation code of the thermostat.
●Changing or deactivating the administrator password.
●Setting up WLAN connection.
●Changing date and time.
●Changing application settings.
●Changing basic/extended configurations and doing factory resets.
If the thermostat is selected for residential application, options related to WLAN
connection is accessible from Settings instead of Advanced Settings.
Create/activate administrator password under Advanced
Settings
1. From the Home screen, tap , and then tap . The Advanced Settings page
displays.
2. Tap , tap Password and then Activate.
3. View the password policy on the screen, and then tap .
4. Enter a strong password required by the password policy displayed on the
screen, and then tap OK.
5. Tap OK.
Manage the administrator password
1. On the Advanced Settings page, tap and then tap Password.
2. Modify or deactivate the administrator password.
4.5 BACnet HMI access (RDS120.B only)
The RDS120.B thermostat supports the BACnet IP communication protocol and is
listed as a BTL device.
The BTL certificate of the thermostat can be found at https://www.bacnetlabs.org/.
See Commissioning for all BACnet objects.

Operating the thermostat from the thermostat main unit
Controlling humidifier/dehumidifier
4
20 | 40
A6V10733807_enUS_c
Access BACnet settings
1. If the thermostat is selected for commercial application (common wireless
infrastructure), do the following:
–From the Home screen, tap , and then tap . The Advanced Settings
page displays.
–If required, enter the administrator password.
–Tap , and then tap .
2. If the thermostat is selected for residential application (individual wireless
infrastructure), do the following:
–From the Home screen, tap , and then tap until the Settings page
displays.
–Tap , and then tap .
3. Tap Network Settings. The default DHCP (Dynamic host configuration
protocol) setting page displays on the screen.
4. Tap to view more DHCP settings such as MAC address.
5. Tap to view or edit advanced BACnet settings.
4.6 Controlling humidifier/dehumidifier
Use the thermostat to control humidifying/dehumidifying function if corresponding
external equipment is connected and configured. From either the thermostat or the
mobile app, you can turn off the humidifier/dehumidifier, or let the thermostat
automatically adjust whether and when to turn it on/off.
Control humidifying/dehumidifying from the thermostat
1. On the Home screen, tap , then tap > / .
2. Tap either OFF or AUTO.
4.7 Fan control
The fan operates as part of the AUTO mode or the ON mode.
Under the AUTO mode, the fan runs in any of the following situations:
●Heating is active.
●Cooling is active.
●The humidification function is active.
●The dehumidification function is active.
●Free-cooling is enabled.
●Ventilation is activated to improve the room air quality.
When the fan is switched off and ventilation is in AUTO mode, you can switch the
fan from AUTO to ON as needed. The fan is switched on by default after three
minutes.
User can adjust Fan min. ON time via Advanced Settings > Optimization to
influence the fan’s minimum runtime.
Under the ON mode, the fan works regardless of whether any of the above
functions is on.
Switch the fan between AUTO and ON modes
●From the Home screen, tap .