Smart Thermostat RDS120 Datasheet Advanced cloud connected thermostat for light commercial and residential applications ● ● ● ● ● ● ● ● A6V10807603_enUS_a 11/19/2018 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 sens
Mechanical Design The room thermostat consists of the following parts: ● Front housing with touch screen and sensors ● Back housing with terminals and relays ● Mounting hardware for installation on 2’’×4’’ electrical box or directly on drywall Operation and Settings Active Display Siemens Building Technologies 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.
Idle Display 1 Relative humidity 2 Shows room air quality: ● Green = Very Good ● Orange = Fair ● Red = Poor 3 Shows if the system is working in an energy-optimized mode. If the leaf is red, some pre-defined settings have been changed. One touch to the leaf returns settings to configured settings and reverts leaf color to green. 4 Room temperature NOTE: Idle mode display will vary based on system configuration.
Associated Equipment Remote sensors Sensor Type Model Number 1k 1k Type 2 Ohm at Ohm Thermistor 32 ℉ Pt RTD Ni R 0-10 Vdc Datasheet* Room Temperature Sensors - Wall-mount QAA2220.EWSN x QAA2212.EWSN 149-714 x QAA2230.EWSN 149-714 x x QAA22SS.EWS N - Flushmount1) 149-714 149-714 540-984 (Metal) x 149-956 536-994A (Beige) x 149-956 536-994B (White) x 149-956 x 149-915 - Duct-mount QAM2030.
Sensor Type Model Number 0-10 Vdc Datasheet* - Duct-mount QPM2100 CO2 x 149-909 - Duct-mount QPM2102 VOC + CO2 x 149-909 - Duct-mount QPM2160 CO2 including temperature x(CO2+T) 149-909 1k 1k Type 2 Ohm at Ohm Thermistor 32 ℉ Pt RTD Ni R * The documents can be downloaded from Siemens US Download Center by specifying the product number as shown in the above table.
Engineering See Product Documentation [➙ 6] for information on engineering, selection and sizing connecting cables for supply voltage and field devices. 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.
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 electronic device for disposal in accordance with the European Guidelines 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.
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 Inputs Connections to Multifunctional Inputs X1 - M - X2 Passive temperature sensors - Cable length max.
Connections to Multifunctional Inputs X1 - M - X2 - Contact sensing DC 14 to 40 V, 8 mA (typical) - Parallel connection Max. 20 thermostats per switch - Input function Selectable Outputs Relay Contact Capacity Voltage AC 24 V (±20%) Current Min. 0.02 A, Max. 1 A per output Operational Data Setpoint Range 45 to 95 °F (7…35 ℃) Built-in Room Temperature Sensor Temperature range Accuracy at 77 °F (25 ℃) Display resolution 32 to 122 °F ±0.9 °F or 0.5 ℃ 1 °F (0.
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.
Standards, Directives and Approvals 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 environmental declaration A5W90003412*) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal).
Terminal Use G Fan X1, X2 Configurable input M Common for X1/X2 inputs Wiring Diagrams Jumper in Place Jumper Removed Note: ● For US installations use Class 2 rated power source. For other installations, use current protection with current rated at max. 4 A. ● If a single transformer is used, keep jumper RH-RC in place. Connect AC 24 V to the RC terminal, and neutral to terminal C. If separate transformers are used for heating and cooling systems, remove jumper RH-RC.
Dimensions Revision history Siemens Building Technologies Edition Date Software version Changes Section Pages 2 November 2018 32.2.28 --- --- --- 1 April 2018 32.2.
Issued by Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Pkwy Buffalo Grove IL 60089 Tel. +1 847-215-1000 16 Siemens Building Technologies Document ID A6V10807603_enUS_a Edition 11/19/2018 © Siemens Industry, Inc., 2018 Technical specifications and availability subject to change without notice.
