This document introduces the RDE20.1 room temperature controller from Siemens Building Technologies, which features a 7-day timer switch, LCD display, and remote temperature sensor. It is designed for heating systems and can control components such as thermal valves or zone valves, gas or oil burners, fans, and pumps. The controller can maintain the room temperature setpoint by obtaining temperature readings from the built-in or external temperature sensors and issuing control commands. It offers normal and energy-saving modes, and can be switched automatically or manually using the 7-day timer switch.
The Siemens RDE20.1 room temperature controller regulates heating system valves to maintain set room temperatures. It offers normal, eco and stop operating modes, a 7‑day programmable timer, and can be powered by two AAA alkaline batteries.
The manual covers functions, mechanical design, installation, maintenance, technical specifications, and example applications such as wall‑mounted gas boilers and heating circulation pumps.
| Power supply | DC 3 V (2×1.5 V AAA alkaline batteries) |
|---|---|
| External temperature sensor input | B1 QAH11.1 |
| Switch error | ±1 K |
When the battery symbol appears, replace the two AAA alkaline cells (2 × 1.5 V) in the battery compartment.
Hold the " " key and simultaneously press the "+" and "‑" keys for 3 seconds; all settings revert to standard values.
The controller provides three modes: normal, eco (energy‑saving), and stop, selectable manually or via the 7‑day timer.