Siemens RDS120 User manual

A6V10807603_a
Siemens AG
2017-07-18
Building Technologies
Smart Thermostat
RDS120
Ultra easy to use cloud connected IAQ controller for managed residential and light
commercial applications
●Easy to read, backlit, auto-dimming 3.5” color LCD touch
●All essential user interaction on home screen –no complex operations
●Intuitive remote user control using Apple iOS and Android mobile phone
applications
●One-touch green leaf button to maximize energy efficiency
●Industry-unique built-in VOC sensor senses and regulates indoor air quality
beyond just CO2
●Built-in humidity sensor for complete comfort control
●Built-in occupancy sensor and window / door contact enables smart occupancy
control
●Full, easy to program user schedule

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Thermostat highlights
●Built-in VOC sensor senses wide range of offending organic odors that contribute to stale air
and drives ventilation control
●Easy to understand tri-level air quality indication: Good, Okay, Poor
●Humidity control using built-in or remote humidity sensor
●One-touch operation for Away, Fan, and Heating/Cooling mode
●Temperature setpoint limits for use in public spaces
●Screen lock protection against unauthorized access
●Room temperature control using built-in temperature sensor, optional remote sensor or
averaged between built-in and remote sensors
●PID algorithm for precise control
●Advanced energy saving control strategy such as free cooling
●Two multifunctional inputs, optional and configurable for:
–Room temperature
–Operating mode switch
–Universal contact
–Outside air temperature
–Room humidity
–Presence detector
–Condensation monitor
–Room air quality
●Six relay outputs for:
–Equipment control (see Application examples [➙ 16])
–One output for humidifier, dehumidifier or air damper
●An additional universal output configurable for humidification, dehumidification or indoor air
quality control
●Guided Setup Wizard
●Over the air (OTA) firmware upgradable
●Green leaf button: when the leaf indicator is Green, the unit is operating per program for
efficiency. When setting is overridden, the leaf turns Red. Touch the leaf to toggle between
scheduled or overridden operation.
Mobile app features
●Supports iOS and Android smartphones
●Each day individually programmable between three mode:
–"Comfort": comfort settings during occupied periods
–"Pre-comfort": setting for evening etc. when maximum comfort is not required
–"Eco": setting for periods during absence to maximize energy savings
●Same operational interface as on thermosat, one-touch "Away", “Fan”, and "Heating" /
"Cooling" mode settings
●User account management
●Monitor temperature and humidity
●Monitor indoor air quality: “Good”, “Okay”, “Poor”
●Secure access and data transmission with Siemens Cloud Computing Platform
Application
The RDS120 is designed to control Heat Pump or Conventional HVAC heating and cooling
applications. It can control up to three stages of heating and two stages of cooling in

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conventional systems and up to two compressors and two stages of auxiliary heat in heat pump
systems.
Mechanical design
The room thermostat consists of the following parts:
●Front housing with touch screen and sensors
●Back housing with terminals and relays
●Two different sized metal mounting plates plus a plastic decoration frame
Operation and settings
Normal display
1
System setup screens and detailed information display
2
Shows if the system is working in an energy-optimized mode. If the leaf is red, some
predefined settings have been changed. Tap the red leaf to restore energy-saving mode.
The leaf turns green.
3
Sensed room temperature
4
Tap once to toggle between "Home" and "Away".

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5
Shows if the thermostat works automatically ( ) or manually ( ). Please note:
●If there is Cloud connection and the scheduler has been programmed, the thermostat
will follow it. Any temporary change of the temperature setpoint is effective only during
the currently scheduled mode.
●If there is Cloud connection, but the schedule has not been programmed, the
thermostat follows the default schedule.
●If there is no Cloud connection, the thermostat will have no schedule and will be
operated manually.
6
Tap to select a fan mode (AUTO/ON).
7
Tap or slide to change the room temperature setpoint.
Idle display
1
Sensed relative humidity
2
Shows room air quality:
●If the icon is green, air quality is Very Good.
●If the icon is orange, air quality is Average.
●If the icon is red, air quality is Poor.
3
Shows if the system is in an energy-optimized mode. If the leaf is red, some pre-defined
settings have been changed. Tap the red leaf to restore to energy-saving mode. The leaf
turns green.
4
Sensed room temperature
NOTE: Depending on how the thermostat is set up, the displayed options under the idle mode
may be different.

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A6V10807603_a
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Ordering information
Product number
Stock number
Description
RDS120
S55772-T101
Room thermostat
Ordering
●When ordering, indicate product number, stock number and description
●Order valve actuators separately
Contents
Items
Quantity
Thermostat (front and rear modules)
1
Metallic mounting plates (small & big)
2
Plastic frame
1
Set of screws and plastic insert
1
Quick guide
1
Mounting instructions
1
Cabling sticker
1
Activation code sticker
1
Associated equipment
Remote sensors
Type of unit
Product no.
LG-
Ni1000
at 32 ℉
Pt1000
at 32 ℉
NTC 10k
at 77℉
DC 0 to
10 V
Datasheet*)
Room temperature sensors
- Wall-mount
QAA24
x
1721
QAA2012
x
1745
QAA2030
x
1745
QAA2061
x
1749
QAA2061D2)
x
1749
- Flush-mount1)
AQR2531ANW
x
1408
AQR2532NNW
x
1411
- Concealed
QAA64
(vandal-proof)
x
1722
Outdoor temperature sensors
QAC22
x
1811
QAC2012
x
1811
QAC2030
x
1811
QAC3161
x
1814

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2017-07-18
Type of unit
Product no.
LG-
Ni1000
at 32 ℉
Pt1000
at 32 ℉
NTC 10k
at 77℉
DC 0 to
10 V
Datasheet*)
Cable temperature sensors
QAP21.3
x
1832
QAP22
x
1831
QAP21.3/8000
x
1832
QAP2012.150
x
1831
QAP1030.200
x
1831
Room humidity sensors
- Wall-mount
QFA2000
x
1857
- Wall-mount
including
temperature
QFA2020
x (T)
x (r.h.)
1857
QFA2060
x (T+r.h.)
1857
QFA2060D2)
x (T+r.h.)
1857
- Flush-mount1)
including
temperature
AQR2534ANW
+ AQR2540Nx
x (T)
x (r.h.)
1410
AQR2535NNW
+ AQR2540Nx
x (T+r.h.)
1410
Indoor air quality sensors
- VOC
QPA1000
x
1961
- CO2
QPA2000
x
1961
- VOC + CO2
QPA2002
x
1961
QPA2002D2)
x
1961
- CO2including
temperature
QPA2060
x
1961
QPA2060D2)
x
1961
QPA2080
x
x
x
x (CO2)
1961
QPA2080D2)
x
x
x
x (CO2)
1961
- Flush-mount1) 3)
AQR2546
x
1410
AQR2548
x
1410
*) The documents can be downloaded from http://siemens.com/bt/download by specifying the
product number as shown in the above table.
1) Requires mounting plate and/or design frames;
2) With digital display;
3) Model according to front and base module combination.

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2017-07-18
Accessory
Type of unit
Product no.
Datasheet*
White decoration frame and metallic
mounting plate for installation on
rectangular conduit box (10 sets)
ARG100.01
S55772-T102
A6V11190640
* The documents can be downloaded from http://siemens.com/bt/download by specifying the
product number as shown in the above table.
Product documentation
Topic
Title
Document number
Mounting and installation
Installation guide
A5W90001425
Installation and operation
User guide
A6V10733807
Startup wizard
Quick guide
A5W90001422
CE declaration
A5W90002476
RCM declaration
A5W90002477
Product environmental declaration
A5W90003412
Related documents such as environmental declarations, CE declarations, etc., can be
downloaded at: http://siemens.com/bt/download.
Notes
Security
CAUTION
National safety regulations
Failure to comply with national safety regulations may result in personal injury and property
damage
●Observe national provisions and comply with the appropriate safety regulations.
Engineering
See Product documentation [➙ 7] for information on engineering, selection and sizing
connecting cables for supply voltage and field devices.

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2017-07-18
Installation location
●The devices are suitable for wall installation.
●Recommended height: 5 feet above the floor.
●Do not install the devices in recesses, shelves, behind curtains or doors, or above or near
heat sources.
●Avoid direct exposure to sun and drafts.
●Seal the conduit or backwall as drafts can affect sensor readings.
●Observe maximum ambient conditions.
Wiring
Use only class 2 rated power source with proper current limiting.
Installation
WARNING
No user serviceable parts inside.
Risk of fire and injury due to short-circuits
●Use properly sized wires for connections
Commissioning
Refer to the Quick guide and User guide (see Product documentation [➙ 7]) to configure your
device. Commissioning includes the following:
●Internet connection
●Application setup
●Account registration and device pairing
NOTE: Before configuring your thermostat, make sure you have Internet connection, a valid
email address, and a smartphone.

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Siemens
A6V10807603_a
Building Technologies
2017-07-18
Operation
Operating system
OS
OS version
App store
iOS
iOS 10 or above
App store®
Android
AndroidTM 5.0 or above
Google PlayTM
Maintenance
The thermostat is designed for maintenance-free operation.
Disposal
The device is considered an electronics device for disposal in terms of European
Directive 2012/19/EU and may not be disposed of as domestic garbage.
●Dispose of the device through channels provided for this purpose.
●Comply with all local and currently applicable laws and regulations.
Regulatory information
Radio equipment directive
The equipment is using harmonized frequency in Europe, and also compliances with the Radio
Equipment Directive (2014/53/EU, formerly 1999/5/EC).
ISED regulations
This device complies with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not cause interference,
and (2) this device must accept any interference, including interference that may cause
undesired operation of the device.
Le present appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisee aux deux conditions suivantes : (1) l'appareil ne
doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage
radioelectrique subi, meme si le brouillage est susceptible d'en compromettre le fonctionnement.

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A6V10807603_a
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2017-07-18
FCC regulations
WARNING
Modification of this device to receive cellular radio telephone service signals is prohibited under
FCC rules and federal law.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected. Consult the dealer or an experienced radio/TV technician for help.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance of 20cm
between the radiator & your body.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.