Caleffi Frostschutzventil verhindert Einfrieren von Heizsystemen Wärmepumpe and chimney draft affect the

and chimney draft affect the operational safety and service life of the entire heating system

Intelligent control with the LOGO PWM solar controller

Efficiency thanks to innovative heat pipe technology

saving both time and labor

Caleffi Frostschutzventil verhindert Einfrieren von Heizsystemen Wärmepumpe and chimney draft affect theCaleffi frost protection valve for heat pumps 1" and 1 1 4'' with outside air duct The frost protection valve prevents the medium in the system circuit from freezing and thus prevents damage to the heat pump and pipes. The valve is a mechanically operating protective system. The version with an outdoor air sensor allows the system to operate in cooling mode even when the water temperature approaches 3C. TECHNICAL DATA Frost protection valve Caleffi