Cast iron boiler Viadrus U68 Hercules 5 segments - coal wood - 14kW
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Wood cast iron boiler Hercules U68 from Viadrus
Hercules U68 boiler by Viadrus is a pyrolytic cast iron boiler with manual loading of fuel for ecological wood burning. The boiler can operate in gravitational heating systems without the use of a pump. The combustion chamber has been designed in such a way as to enable fuel combustion with natural exhaust extraction without the use of a fan.
- 10-year warranty on the cast iron body
- low draught requirements for chimney draught
- Effectiveness up to 90.7%
- meets the conditions of 'Ekodesign'.
- meets the requirements of emission class 5 according to ČSN 303-5
- long service life of the Czech cast iron exchanger
- water-cooled solid grates
- low fuel consumption
- easy to operate and maintain
- threaded ferrules for easy installation
- low exhaust temperature (approx. 140 - 180 °C)
- operation without electrical power supply (without forced exhaust gas extraction and without circulation pump, except for systems with buffer tank)
Number of sections | unit | 5 | 6 | 7 | 8 | 9 |
Energy efficiency class | • | A+ | A+ | A+ | A+ | A+ |
Energy efficiency index EEI | • | 114 | 114 | 117 | 116 | 116 |
Rated heating output | kW | 14 | 18 | 23 | 27 | 34 |
Boiler class according to EN 303-5 | [-] | 5 | ||||
ECODESIGN | [-] | + | ||||
Efficiency | % | 88,3 | 88,7 | 90,5 | 90,7 | 90,3 |
Firebox depth | mm | 255 | 255 | 365 | 475 | 585 |
Recommended firewood length | mm | 350 | ||||
Firebox capacity | l | 32 | 32 | 45 | 59 | 73 |
Fuel burn rate | kg/h | 3,7 | 4,3 | 5,3 | 6,9 | 8,5 |
Flue gas temperature | [ºC] | 140 - 180 | ||||
Dimensions - Height × Width | mm | 1160 x 683 | ||||
- Depth (A) | mm | 890 | 1000 | 1100 | 1220 | 1330 |
Dry weight | kg | 348 | 413 | 485 | 503 | 549 |
Chimney connection diameter | mm | 160 | ||||
Required chimney draught | Pa | 14 | 15 | 16 | 18 | 25 |
Water capacity | l | 40,5 | 46,5 | 52,5 | 58,5 | 64,5 |
Heating water temperature range | [ºC] | 60 - 80 | ||||
Return water minimum temperature | [ºC] | 50 | ||||
Heating / return water connection | - | 2" | ||||
Working / testing water overpressure | bar | 4/8 | ||||
Maximal fuel weight in firebox | kg | 13 | 13 | 18 | 22 | 25 |
Seasonal energy efficiency | % | 78 | 78 | 80 | 79 | 79 |
Dimensions of the boiler
Boiler size - Number of parts | - | 5 | 6 | 7 | 8 | 9 |
Length A | mm | 890 | 1000 | 1100 | 1220 | 1330 |
Length B | mm | 620 | 730 | 840 | 950 | 1060 |
Product specification
Fuels | drewno |
Power output | 14 kW |
Weight | 348 kg |
Efficiency | 88,3 % |
Boiler class (303-5:2012) | 5 |
Ecodesign | tak |
Water capacity | 40.5 L |
Height | 1160 mm |
Width | 683 mm |
Depth | 890 mm |
Required chimney draught | 14 Pa |
Number of segments | 5 pcs |
Min. incoming water temperature | 50 °C |
Warranty | 10 lat |
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