| Technical specifications boiler boiler S-PEL |
| Nominal boiler capacity | kW | 15 | 20 |
| Hopper capacity | dm³ | 55 |
| Water capacity of the boiler, not less than | l | 39 |
| Boiler weight without water | kg | 221 | 274 |
| Maximum water temperature | °C | 90 |
| Maximum working pressure of water, not exceeding | MPa | 0,20 |
| Electricity consumption (min-max) | W | 160-410 |
| Diameter of pipes for forward and return network water (DU) | mm | 20 |
| Diameter of the pipe for the safety valve (DU) | mm | 15 |
| External diameter of the chimney connection | mm | 98 |
| External diameter of the burner air duct connection | mm | 60 |