Certified UL391 and CSA-B366.1

Output:

• Automatic operation: 7 - 25 kW

• Manual operation: 5 - 22,5 kW

Fuel:

• Automatic operation: wood pellets, hard coal, brown coal

• Manual operation: hard coal, lump wood

Features:

• Automatic operation controlled by room thermostat

• Easy, time-saving operation and maintenance

• Low emissions, high efficiency, low operation costs

• Right or left connection of fuel reservoir to the boiler

• Two sizes of fuel reservoir

• Long service life of cast-iron exchanger

Combination cast iron boiler HERCULES DUO is intended for economy heating especially of houses. Its universality is a great merit of the boiler. The boiler can be used in two modes. In upper half of the boiler you can burn coke, hard coal and lump wood at manual mode. In the burner that is placed in the boiler pedestal you can burn hard coal, brown coal or wood pellets of specified size that are supplied from reservoir into the burner but only in automatic mode.

The cast iron exchanger warranting boiler life time is a main part of the boiler. A retort burner with a mixer is placed in steel boiler pedestal. Fuel feeding into the burner is designed by screw feeder from boiler reservoir through retort on cast iron grate.

Automatic mode - control and safety elements

The boiler is protected from fuel fire penetration by heat-sensing element on screw pipe, in case of power cut is protected by thermal fuse that is placed in the boiler reservoir. Heating system is protected from overheating by safety thermostat. Boiler regulator enables setting the fuel feeder, water heater pump, circulation pump, fan with a butterfly valve. It is equipped with temperature sensors and includes room thermostat outlet.