Viadrus

VIADRUS U 22 D is a universal sectional low-pressure sectional boiler, constructed for burning wood logs or coal. Main boiler advantages Two and three- section boilers VIADRUS U 22 are suitable as a heat source for water based central heating systems of apratments and small residential and recreational facilities. Bigger models (with four sections and above) meet the requirements for heating family houses, commercial centers, schools, etc. The boiler can be used in systems with gravity or forced circulation of the hot water with working overpressure of 800 kPa. The range of boilers VIADRUS U 22 D differentiates from the VIADRUS U 22 C by a widened fuel loading door, which allows the burning of wood logs with a diameter of up to 220mm. Burning large logs optimizes the combustion process and increases its quality. At the same time, the ash quantity is reduced and it can be used as a fertilizer. Main advantages: 1. Long operating life of the cast iron exchanger and all other parts due to the quality of used materials. 2. Guaranteed durability of the unit. 3. Elaborate production technology on automatic forming lines with consistent and approved quality of the production process (ISO 9001, ISO 14 001). 4. Efficiency of coke and anthracite burning – 75 – 80 %, efficiency of wood burning – 75 %. 5. Simple service and maintenance. 6. Low demand for chimney draught. 7. Power increases according to the number of sections. 8. Possibility of boiler adaptation to burning solid fuels to gas or liquid fuels or vice versa.  Boiler construction The main part of the boiler are its sections, made of grey cast iron in accordance to: ČSN 42 2415 Grey iron 42 2415 with light graphite, or ČSN 42 2420 Grey iron 42 2420 with light graphite All parts of the boiler that are under pressure during operation correspond to the demands for durability according to: ČSN 07 0240 Hot water and low pressure steam boilers; ČSN 07 0245 Hot water and low pressure steam boilers. Hot water boilers up to 50