Boiler Defro Sigma 20 kW
NN: 02433 / 02414
Product specification
| Power output | 20 kW |
| Exhaust gas pipe diameter | 178 mm |
| Weight | 515 kg |
| Efficiency | 88.9 % |
| Min. chimney diameter | 180 mm |
| Boiler class (303-5:2012) | 5 |
| Size of heated surface | 270 m² |
| Water capacity | 100 L |
| Boiler heating surface | 2.3 m² |
| thickness of steel | 6 mm |
| Height | 1365 mm |
| Width | 1270 mm |
| Exhaust pipe distance measured from the floor to its base | 882 mm |
| Depth | 1110 mm |
| Max. water temperature | 80 °C |
| Max working pressure | 1.5 bar |
| Silo volume | 165 dm³ |
| Required chimney draught | 26 Pa |
| Minimum chimney section | 16x6 cm² |
| Min. chimney height | 7 m |
| Outlet and inlet size | 6/4” inch |
| Min. incoming water temperature | 65 °C |
| Power supply | 230V / 50Hz |
| Warranty | 60 months |
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