| 
                        
                                                                                                                            
                                                            | Weight: | 
                                                            315 kg
                             | 
                        
                                                                                                                            
                                                            | Equipment: | 
                                                            Built-in blower, display
                             | 
                        
                                                                                                                            
                                                            | Description: | 
                                                            Boiler type: solid fuel, number of circuits: single circuit, max. heat output: 25 kW, heated area: 250 m², location: floor, type of electrical network: single-phase, type of combustion chamber: s
                             | 
                        
                                                                                
                                                                                        
                                                            | Peculiarities: | 
                                                            Automatic fuel supply, pressure gauge, thermometer
                             | 
                        
                                                                                                                            
                                                            | Additional Information: | 
                                                            Controller ST-81K
                             | 
                        
                                                                                
                                                                                        
                                                            | Control: | 
                                                            Electronic
                             | 
                        
                                                                                                                            
                                                            | Dimensions WxHxD: | 
                                                            550x1460x830 mm
                             | 
                        
                                                                                
                                                                                        
                                                            | Functions: | 
                                                            Frost protection, thermometer, manometer
                             | 
                        
                                                                                
                                                                                        
                                                            | Installation: | 
                                                            Floor
                             | 
                        
                                                                                
                                                                                        
                                                            | Efficiency: | 
                                                            85 %
                             | 
                        
                                                                                
                                                                                        
                                                            | Fuel: | 
                                                            Wood briquettes, firewood, coke, peat, peat briquettes, coal, coal briquettes
                             | 
                        
                                                                                
                                                                                        
                                                            | Mains voltage: | 
                                                            Single-phase
                             | 
                        
                                                                                
                                                                                        
                                                            | Chimney diameter: | 
                                                            180 mm
                             | 
                        
                                                                                
                                                                                        
                                                            | Heated area: | 
                                                            250 sq.m
                             | 
                        
                                                                                
                                                                                        
                                                            | Automatic fuel supply: | 
                                                            There is
                             | 
                        
                                                                                
                                                                                        
                                                            | Built-in circulation pump: | 
                                                            No
                             | 
                        
                                                                                                                            
                                                            | The combustion chamber: | 
                                                            Closed
                             | 
                        
                                                                                                                            
                                                            | Max. water pressure in the heating circuit: | 
                                                            1.8 bar
                             | 
                        
                                                                                                                            
                                                            | Heat carrier temperature: | 
                                                            55 - 90 °С
                             | 
                        
                                                                                
                                                                                        
                                                            | Built-in expansion tank: | 
                                                            No
                             | 
                        
                                                                                
                                                                                        
                                                            | Heating circuit connection: | 
                                                            1¼
                             | 
                        
                                                                                
                                                                                        
                                                            | Number of circuits: | 
                                                            Single-loop
                             | 
                        
                                                                                                                            
                                                            | Primary heat exchanger material: | 
                                                            Steel
                             | 
                        
                                                                                                                            
                                                            | Type of heating boiler: | 
                                                            Solid fuel, long burning
                             | 
                        
                                                                                
                                                                                        
                                                            | Max. thermal power: | 
                                                            25 kW
                             |