• Just load it easily from the front, light it, close the door,

and that’s it
• Automatic ignition device (optional)
• Long combustion zone and reduced emissions through the

new, more advanced combustion chamber shape
• Boiler start and stabilisation of combustion through speed

regulated induced draught fan
• No smoke escapes during reloading with the special

carbonisation gas extraction system
• High efficiency, easy cleaning from outside and low

energy consumption with WOS as standard
• Precise combustion control through serial lambda control

and separate primary and secondary air control
• Large, clear control unit with adjustable viewing angle
• Menu-based operation with online help
• Boiler navigation from the living room

Convenient loading of logs (up to 56 cm in length) and

coarse waste wood

S4 Turbo 15 15 kW

S4 Turbo 22 22 kW

S4 Turbo 28 28 kW

S4 Turbo 34 34 kW

S4 Turbo 40 40 kW

S4 Turbo 50 50 kW

S4 Turbo 60 60 kW