Siemens Manuals

This document introduces the RDX42 room temperature controller and heat pump system with LCD display from Siemens Building Technologies. The controller can provide single-stage or dual-stage heating, single-stage cooling, and output signals to compressor, reversing valve, switch valve actuator, auxiliary electric heating, and single-speed fan. It can control based on room or return air temperature and has normal, energy-saving, and off working modes. The controller also supports external remote control and installation parameter selection.

This document introduces the room temperature controller RAA20, released by Siemens Building Technologies in 2003. The controller is suitable for single heating or cooling systems and can be used in residential buildings and light industrial buildings. It features two-position switch control and adjustable inflation membrane to maintain the selected temperature value.

RDF310.2 and RDF410.21 are embedded room thermostats with LCD display, designed for single-cooling or single-heating systems. They can be used to control the temperature of single rooms and areas, which are heated and cooled by two-pipe fan coil units or single-stage compressor direct expansion devices. The controller controls a three-speed fan, a water valve actuator in two-pipe or a single-stage compressor in direct expansion devices. The thermostat acquires room temperature via an integrated sensor and maintains the set temperature by outputting a switching signal to control the valve or compressor.

RDF310.2, RDF310.21 and RDF410.21 are embedded room thermostats with LCD display for two pipe fan coil systems and direct expansion devices. They can control three-speed fan, two-pipe valve actuator and single-stage compressor.

The room temperature controller RAA40 is used for single heating or single cooling systems with manual switching of cooling and heating, switch control, operating voltage AC24 to 250V. It is suitable for residential buildings and light industrial buildings and can be used in conjunction with area valves and heating valves.

RAA20 room temperature controller is used for single hot or single cold system, the working voltage is AC24～250V, it can maintain the selected temperature value. It is suitable for residential buildings, light industrial buildings and other places.

This manual describes the SITOP Smart 2.5, 5 and 10 AC/DC switch-mode power supplies, including installation, operation and maintenance.

This document is a system operation manual for SIRIUS 3RW44 soft starter. The manual includes important instructions, design specifications, installation, connection and circuit structure, display screen, operating components and device interface, debugging, device functions, diagnostic and status information, circuit examples, general technical parameters, and safety instructions.