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ÜKY/DUO Boiler User Manual
INTRODUCTION
Thank you for choosing ÜNMAK ÜKY/DUO series solid fuel boiler. ÜNMAK ÜKY/DUO
series boilers are produced with both automatic and manual feeding.
Please read the user manual carefully before installing and operating your product
and keep the user manual for the life of the product. Do not touch or mix any part
of the product other than the places allowed in the user manual.
The installation, maintenance and service of the boiler requires expert technical team.
These operating instructions and regulations should be considered for the installation of the boiler,
the selection of the appropriate location for the installation, the installation of the boiler water
installation and the design of the chimney.
ÜNMAK DUO Series boilers are high efficiency steel welded hot water boilers designed to burn solid
fuel only. Coal with a diameter of 10-18 mm (sold in the market under the name of hazelnut coal),
nutshell, cherry-cherry kernel, olive pomace, pellet etc. It is suitable for burning fuels. These boilers
are used only for heating installations, not directly for domestic water heating. However, it can
produce hot tap water with the help of a boiler or heat exchanger. The energy required for the
domestic water will be taken from the boiler energy.
ÜNMAK DUO Series boilers convert the chemical energy of the fuel in the fuel loading chamber to
heat energy by combustion and load it on the water that is heating fluid. Excessive fuel build-up in
the combustion chamber by keeping the feed setting overstated will result in energy loss and will
take longer to burn the fuel.
The combustion circuit, fan, feed auger and system pump control are carried out by the electronic
control panel supplied with the boiler.
ÜNMAK DUO Series boilers can only burn granular fuels up to 25 mm in diameter. Since the
powdered fuels will fly inside the combustion chamber with the system fan, there will be no efficient
combustion. Since powdered fuel will collect more moisture, it will even cause spiral blockage in the
feed screw. Depending on the calorific values of the fuels, the heat passing from the boiler to the
water may exceed the declared values.
Your user manual should be read carefully and kept with the warranty certificate
enclosed for the lifetime of the boiler.
