naturzugkessel defro firewood plus 12 kw Zubehör The temperature in the heat

The temperature in the heat generator is measured via an integrated thermostat

A manual venting device allows for quick adjustments to operation and ensures trouble-free operation

Cooling air temperature

This results in an optimally coordinated overall system and ensures smooth operation

and the factory pre-charge pressure

naturzugkessel defro firewood plus 12 kw Zubehör The temperature in the heatProduct Overview & Application The Defro Firewood Plus 12 kW is a hand fed natural draft boiler for split logs, designed for hot water heating systems with a buffer tank. It is suitable for heating systems that use solid biomass in the form of natural split logs and where the system is professionally integrated into a closed heating system. Technology & Equipment The boiler body is constructed as a water carrying steel structure with multiple flue gas