stop r frost protection valve with outdoor air sensor series 108 Connection size:1 1/4" - 70 kV but you can also be

but you can also be sure they are perfectly matched to your boiler

The generously sized loading chamber simplifies firewood preparation and supports longer burn cycles

Pellet boiler

including the SLX and DPX models

Emergency operation with logs is possible according to the manual

stop r frost protection valve with outdoor air sensor series 108 Connection size:1 1/4" - 70 kV but you can also beCaleffi 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