Thermostat Afriso BRC 20–90°C surface-mounted, internal setting, model 6740300

The Afriso BRC surface-mounted thermostat model 6740300 is a mechanical temperature regulator designed for direct installation on pipes, boilers or equipment surfaces. It provides a manually adjustable setpoint within a 20–90°C range and a robust housing intended for building services and technical installations. The thermostat senses temperature at the mounting surface and actuates a switching contact to control heating circuits, pumps or safety functions where a simple, reliable mechanical control is required.

Advantages

The device features a clear temperature range of 20–90°C with internal setting, enabling straightforward manual adjustment without additional sensors. Its surface-mounted design allows direct thermal contact with the controlled equipment for fast response. The mechanical switching principle does not require power for the sensor element, offering reliability in installations where electronic controls are not desired or applicable. The compact, robust housing provides protection in typical indoor technical environments and simplifies mounting and maintenance.

Suitable for

• Temperature control on heating system pipes and manifolds
• Boiler surface temperature monitoring and control
• Industrial equipment requiring a mechanical temperature switch
• Pump or valve control based on surface temperature
• Retrofit or replacement of existing mechanical thermostats

Key specifications

• Temperature range: 20–90°C
• Mounting type: surface-mounted for direct contact with equipment
• Setting method: internal/manual setpoint adjustment
• Control type: mechanical switching contact for on/off control
• Housing: compact, robust enclosure suitable for technical indoor installations

How to use

Mount the thermostat directly onto the surface to be monitored following the manufacturer’s mounting recommendations, ensuring good thermal contact between the thermostat base and the pipe or equipment surface. Adjust the internal setpoint to the required temperature within the 20–90°C range. Connect the switching contact to the control circuit of the boiler, pump or actuator according to the wiring diagram and safety rules for the installation. Verify correct operation by monitoring the controlled device while changing the setpoint and allow time for thermal stabilization.

Usage recommendations

For accurate temperature sensing, ensure the mounting surface is clean and free of insulating materials; use appropriate mounting screws or brackets and consider thermal paste if recommended. Avoid exposure to excessive moisture or corrosive environments and check electrical connections periodically. Use this mechanical thermostat where a simple, reliable on/off temperature control is sufficient and where electronic controllers are not required.