| Water shirt volume, L | 85 | 
| Fuel type | firewood, briquettes, coal | 
| Complete set | boiler RETRA - 5M Econom + controller and fan | 
| Heat exchanger area, m2 | 2,58 | 
| Furnace volume, L | 117 | 
| Upper combustion chamber size, mm (LxWxH | 475х370х670 | 
| Overall dimensions of the boiler, mm (LxWxH) | 915х635х1370 | 
| Loading hatch neck size, mm (WxH) | 330х215 | 
| Boiler outlet water temperature, Max, °C | 95 | 
| Water temperature at the boiler inlet, not less than, °C | 55 | 
| Temperature of combustion products, Max, °C | 160 | 
| Chimney outlet, mm | 159 | 
| Connection dimensions to the heating system | 1 1/2" | 
| Connecting size of the safety valve | 1/2" | 
| Inner wall thickness of the heat exchanger, mm | 3 | 
| Working pressure of the heat carrier, MPA, min / max | 0,2 | 
| Vacuum behind the boiler, Pa, Max | 25 | 
| Power consumption, W (220 V, 50 Hz), Max | 25 | 
| Chimney pipe diameter, mm/height, m, not less | 180/8 | 
| Boiler weight (without water), kg | 270 | 
| Production period, days | ≥ 90 | 
| Producer | РЕТРА | 
| Power capacity, kW | 20 | 
| Heating area, m2 (at a height of up to 3.5 m) | 200 | 
| Serial number of the boiler | 5М Plus | 
| Country of Origin | Ukraine | 
    | Water shirt volume, L | 85 | 
| Fuel type | firewood, briquettes, coal | 
| Complete set | boiler RETRA - 5M Econom + controller and fan | 
| Heat exchanger area, m2 | 2,58 | 
| Furnace volume, L | 117 | 
| Upper combustion chamber size, mm (LxWxH | 475х370х670 | 
| Overall dimensions of the boiler, mm (LxWxH) | 915х635х1370 | 
| Loading hatch neck size, mm (WxH) | 330х215 | 
| Boiler outlet water temperature, Max, °C | 95 | 
| Water temperature at the boiler inlet, not less than, °C | 55 | 
| Temperature of combustion products, Max, °C | 160 | 
| Chimney outlet, mm | 159 | 
| Connection dimensions to the heating system | 1 1/2" | 
| Connecting size of the safety valve | 1/2" | 
| Inner wall thickness of the heat exchanger, mm | 3 | 
| Working pressure of the heat carrier, MPA, min / max | 0,2 | 
| Vacuum behind the boiler, Pa, Max | 25 | 
| Power consumption, W (220 V, 50 Hz), Max | 25 | 
| Chimney pipe diameter, mm/height, m, not less | 180/8 | 
| Boiler weight (without water), kg | 270 | 
| Production period, days | ≥ 90 | 
| Producer | РЕТРА | 
| Power capacity, kW | 20 | 
| Heating area, m2 (at a height of up to 3.5 m) | 200 | 
| Serial number of the boiler | 5М Plus | 
| Country of Origin | Ukraine |