| 
 External dimensions (W-D-H) in mm 
 | 
 656 - 479 -603/883/983 
 | 
| 
 Combustion chamber inner dimensions (W-D-H) in mm 
 | 
 450 - 275 - 220 
 | 
| 
 Flue outlet (diameter) 
 | 
 150 
 | 
| 
 Heating (at -20°C) in m2 
 | 
 120 
 | 
| 
 Efficiency in % 
 | 
 81 % 
 | 
| 
 Weight in kg 
 | 
 137 
 |