Room temperature controller Bosch C-IR 20 (model 7738343177) — wall-mounted thermostat for heating systems

Bosch C-IR 20 is a wall-mounted room temperature controller designed for straightforward integration with residential and light-commercial heating systems. The device provides basic regulation of indoor temperature through a user-accessible control interface, allowing occupants to set a desired temperature setpoint and maintain a consistent thermal environment. Intended for installations where a compact, wall-mounted thermostat is preferred, the C-IR 20 supports standard control functions for boilers and heating circuits and fits common mounting locations within living spaces or utility rooms.

Advantages

The Bosch C-IR 20 offers a compact design and an intuitive control layout that simplifies daily temperature adjustments. Its wall-mounted form factor permits easy access and a stable mounting position, while the controller’s basic regulation capabilities allow reliable maintenance of setpoint temperatures. The device is compatible with typical residential heating systems and supports straightforward wiring and configuration for professional installers or qualified service technicians.

Suitable for

• Room temperature regulation in apartments and houses
• Control of single heating circuits or boiler operation
• Replacement of older wall-mounted thermostats
• Light-commercial premises with standard heating systems

Key specifications

• Wall-mounted housing suitable for indoor installation
• User-accessible temperature setpoint control
• Basic heating regulation functionality for boilers and circuits
• Mechanical and electrical interface for direct connection to heating system control wiring
• Compact dimensions for installation on standard wall boxes

How to use

Mount the Bosch C-IR 20 on a suitable interior wall at a representative room height away from direct sunlight, drafts and local heat sources. Connect the controller to the heating system wiring according to the installation instructions provided by the heating equipment manufacturer and local regulations. Use the front panel controls to set the desired temperature setpoint; the controller will operate the heating system to maintain that setpoint. Commissioning and any changes to wiring or internal settings should be performed by a qualified installer or service technician.

Recommendations

Place the unit on an internal wall in a central location, typically about 1.2–1.5 meters above the floor, avoiding direct exposure to windows, radiators or kitchen appliances. Regularly check wiring connections after installation and schedule professional service for troubleshooting or when integrating with more advanced control systems. For battery-powered or backup models, follow the manufacturer guidance on battery replacement intervals.