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                                                            | Weight: | 222 kg | 
                                                                                                                            
                                                            | Description: | Type of heating boiler: gas, max. thermal power: 23 kW, number of circuits: double-circuit, placement: wall-mounted, fuel: natural gas, type of combustion chamber: closed, type of power supply: single-phase, control: electric | 
                                                                                
                                                                                        
                                                            | Peculiarities: | Safety valve, thermometer | 
                                                                                                                            
                                                            | Additional Information: | The TKP 20U1 option package also includes: an electronic temperature controller, a magnetic starter, a liquid level control sensor, an automatic air vent, a heating element | 
                                                                                
                                                                                        
                                                            | Control: | Mechanical | 
                                                                                                                            
                                                            | Dimensions WxHxD: | 560x1900x560 mm | 
                                                                                
                                                                                        
                                                            | Installation: | Floor | 
                                                                                
                                                                                        
                                                            | Efficiency: | 91 % | 
                                                                                
                                                                                        
                                                            | Fuel: | Firewood, coal | 
                                                                                
                                                                                        
                                                            | Chimney diameter: | 180 mm | 
                                                                                
                                                                                        
                                                            | Heated area: | 200 sq.m | 
                                                                                
                                                                                        
                                                            | The combustion chamber: | Open | 
                                                                                                                            
                                                            | Max. water pressure in the heating circuit: | 2 bar | 
                                                                                                                            
                                                            | Max. coolant temperature: | 70 °С | 
                                                                                
                                                                                        
                                                            | Heating circuit connection: | 1¼ | 
                                                                                
                                                                                        
                                                            | Number of circuits: | Single-loop | 
                                                                                                                            
                                                            | Primary heat exchanger material: | Steel | 
                                                                                                                            
                                                            | Type of heating boiler: | Solid fuel, long burning | 
                                                                                                                            
                                                            | Non-volatile: | Yes | 
                                                                                
                                                                                        
                                                            | Max. thermal power: | 20 kW |