Wood/pellets gasifying boiler Sigma KOMBI 20/30 kW

Wood/pellets gasifying boiler Sigma KOMBI 20/30  kW Sigma Dual  is new model of biomass boilers sold by CWD. Model is prepared and designed for multi fuel combustion - wood log and granulated fuel like agropellet, wood pellets or grain. 

Combined heating boilers like our Sigma dual Kombi is based on 3 chamber - combustion with ceramics, chamber for logs and independent chamber for pellet burner. We can use both of fuel : wood logs 50 cm and pellet 6 / 8 mm in one boiler, one chimney - we can save a lot of space and installation costs instead 2 independent separate boilers. 

The boiler Sigma Kombi is based on wood gasifying boiler Sigma and it is extended version of this model with additonal chamber for pelletburner. Biomass burner with automatic ignition and cleaniing system is installed in bottom chamber of the boiler and we can use both of fuel ( wood/pellets) without any dismantling of the pellets burner.

Construction of the boiler

Pellet burner Combustion chamber door combustion chamber with ceramics Air regulation Loading chamber door Controller Easy start flap Upper cleaning hole Smoke conduit Exhaust fan Primary air nozzles Ceramical burner Lower cleaning holes Pellet burner combustion chamber

Two combustion chambers

Wood combustion	Pellet combustion

Advantages

• 50 cm log wood combustion in gasifying mode
• exhoust fan
• extended controller Igneo ( extra Lambda Probe or GSM controller)
• advanced self cleaning pellet burner