Universal stoves are fired with coal, mixture of coal and fine coal, wood and dry waste. The stoves are welded from boiler plates with the minimum thickness of 8 mm, insulated, with a fixed water grate. The stoves can be provided with the chamotte insert. The combustion process is supported by the pressure fan, which can be adjusted or switched off completely depending on the type of fuel. The surface of the combustion chamber in the stove as well as the access to it are made in accordance with the requirements of the customer. With regards to this issue, we can provide you with professional advice. The channel heat exchanger forces out the vertical movement of the exhaust gases, using the energy that they comprise to the maximum, and does not allow the heat to be released “into the chimney”. The operation of the pressure fan and heat pumps is controlled by the electronic controller. The universal stoves are offered in the range from 50 to 1000 kW. Boiler energy efficiency is 78%.

The RETO boilers provided with a retort burner, fired with eco pea coal, fine coal or biomass with high thermal efficiency that exceeds 89% are produced in the range from 50 to 700 kW. These are fully automatic boilers, in which exactly the same portion of fuel as is necessary to obtain the temperature set by the user on the microprocessor controller is burned on a small but very efficient retort furnace. Additionally, if requested by the customer, the furnace chamber may be equipped with the chamotte insert. The use of the state-of-the-art solutions on the market caused the operation of the boiler to be practically reduced to periodical replenishment of the charging hopper with fuel and removal of ash once in just a couple of days (the quantity of ash is very small due to the necessity of using high-quality coal types, i.e. eco-pea coal) – the boilers do not need to be fired up on a permanent basis, and the fuel is dosed by the automatic feeding screw. The burners used in them are manufactured by renowned Polish and foreign companies. In this respect we are open to different proposals of the customer and can offer professional advice. Combustion in this boiler is practically smoke-free and the emission of detrimental compounds and dusts, which is much lower than the one permitted by the law, allows these boilers to be included in the group of highly ecological boilers. Upon customer request, the device can be equipped with an additional grate on which a different fuel may be burned as an alternative. The described solution enables the traditional way of combustion in the case of lack of power supply or any other failure.