Datasheet Smart Thermostat RDS120, RDS120.B Advanced cloud connected thermostat for applications in light commercial and residential buildings. ● ● ● ● ● ● ● ● A6V10807603_enUS_b 11/23/2021 Controls conventional HVAC systems up to 3H/2C and heat pumps up to 4H/2C Easy to read, backlit, auto-dimming 3.
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 ● Built-in temperature and humidity sensors ● Inputs for remote or averaging temperature and humidity sensors ● One-touch operation for Away, Off, Fan and Heating/Cooling ● Configurable setpoint limits ● Password protected screen lock ● Presence detection using a built-in sensor ● PID algor
Application The RDS120/RDS120.B 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 conventional systems and up to two compressors and two stages of auxiliary heat in heat pump systems. Using its fan, the RDS120/RDS120.B can also (de)humidify a space. Note: The RDS120/RDS120.B is a room thermostat, and as such, there are limitations to what it can control.
5 Shows if the thermostat is operating per the schedule ( ) 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.
NOTE: Idle mode display will vary based on system configuration. Ordering Information Model Number Orderable Part Number Description RDS120 S55772-T101 Smart Thermostat US Residential RDS120.
Sensor Type Model Number 1k 1k Type 2 Ohm at Ohm Thermistor 32 °F Pt RTD Ni R 0-10 Vdc Datasheet * (4”) Outdoor Temperature Sensors QAC22 x QAC2012 149-920 x QAC2030 149-920 x QAC3161 149-920 x 149-920 Cable Temperature Sensors QAP22 QAP2012.150 x 149-918 x QAP1030.200 149-918 x 149-918 Room Humidity Sensors - Wall-mount including temperature QFA3212.EWSN QFA32SS.EWS N - Duct-mount QFM2160U including temperature x(T) x (r.h.) 149-714 x (T+r.h.) 149-714 x (T+r.h.
Replacement Part Description Model Number Orderable Part Number Plastic trim plate and metal mounting plate for 2’’ × 4’’ box (1 set) ARG100.
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.
Operation Operating System OS OS version App Store iOS iOS 12 or above App store® Android AndroidTM 10.0 or above Google PlayTM Maintenance The thermostat is designed for maintenance-free operation. Disposal The device is considered an electronic device for disposal in accordance with European Directive and may not be disposed of as domestic waste. ● Use only designated channels for disposing the devices. ● Comply with all local and currently applicable laws and regulations.
FCC Regulations (USA) 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.
Technical data Power Supply Power Supply Operating voltage AC 24 V (±20%) Frequency 48 to 63 Hz Power consumption Max. 9 VA Max. power supply current 4 A current limited Radio Data Radio Parameter Frequency band 2.4 to 2.4835 GHz Maximum radio-frequency power 18 dBm WLAN standard IEEE 802.11b/g/n (HT20) WLAN channel 1-11 11 Siemens Industry, Inc.
Inputs Connections to Multifunctional Inputs X1 - M - X2 Passive temperature sensors - Cable length max.
Operational Data Setpoint Range 32 to 122 °F (0 to 50 °C) 53.6 to 95 °F (12 to 35 °C) (default) Built-in Room Temperature Sensor Temperature range Accuracy at 77 °F (25 °C) Display resolution 32 to 122 °F ±0.9 °F or 0.5 °C 1 °F (0.5 °C) Built-in Room Humidity Sensor Humidity range Accuracy at 77 °F (25 °C) Display resolution 0% to 100% ±5% r.h.
PIR Sensor Sensor Detection Range A: The width of each cell, 80 cm (31 in). B: The thermostat. C: The height of each cell, 80 cm (31 in). D: The area that the PIR sensor can detect.
Ambient Conditions and Protection Classification Storage as per EN 60721-3-1 Class 1M2 Transport as per EN 60721-3-2 Class 2M2 Operation as per EN 60721-3-3 Class 3M2 Standards, Directives and Approvals EU conformity (CE) A5W90002476*) RCM conformity A5W90002477*) FCC standards FCC CFR 47 Part 15 Class C IC standards RSS-247 issue 1 May 2015, RSS-GEN issue 4 November 2014 UL UL916 The United Arab Emirates Authorization Number of TRA: ER54733/17 Environmental compatibility The product envi
Terminal Use RH AC 24 V, heating system RC AC 24 V, cooling system C AC 24 V, common W1/O/B Stage 1 heating (W1) in conventional system or reversing valve O/B in heat pump system W2/AUX Stage 2 heating in conventional system, Stage 1 Aux Heat in heat pump system W3/UNIV Stage 3 heating or universal output in conventional system, or Stage 2 auxiliary heat or universal output in heat pump system Y1, Y2 Stages 1 and 2 cooling in conventional system or Stages 1 and 2 compressor in heat pump syste
Dimensions Revision history Edition Date Software version Changes Section 4 32.4.56 (RDS120.B) ● ● Application [▶ 2] 2 ● Ordering Information [▶ 5] 4 June 2021 32.2.56 (RDS120) ● Added (de)humidification limitations Added RDS120.B information Pages 3 January 2019 32.2.28 Changed Setpoint Range from 45 to 95 °F (7…35 °C) to 32 to 122 °F (0 to 50 °C), 53.6 to 95 °F (12 to 35 °C) (default). Technical data 11 2 November 2018 32.2.28 --- --- --- 1 April 2018 32.2.
Issued by Siemens Industry, Inc. Smart Infrastructure 1000 Deerfield Pkwy Buffalo Grove IL 60089 +1 847-215-1000 Document ID A6V10807603_enUS_b Edition 11/23/2021 © Siemens Industry, Inc., 2021 Technical specifications and availability subject to change without notice.
