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Cast iron boiler Viadrus U68 Hercules 5 segments - coal wood - 14kW

Cast iron boiler Viadrus U68 Hercules 5 segments - coal wood - 14kW

NN: 23348
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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

Viadrus U68
 
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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