| Water shirt volume, L | 242 |
| Fuel type | pellets, agropellets |
| Complete set | boiler RETRA-4M PLUS: torch burner OXI EVO (EVO-C), automation and flexible auger, bunker torch BF (pellets, agropellets) |
| Heat exchanger area, m2 | 6,9 |
| Furnace volume, L | 310 |
| Upper combustion chamber size, mm (LxWxH | 780х670х600 |
| Overall dimensions of the boiler, mm (LxWxH) | 1780х930х1670 |
| Loading hatch neck size, mm (WxH) | 430х310 |
| Boiler outlet water temperature, Max, °C | 95 |
| Water temperature at the boiler inlet, not less than, °C | 55 |
| Temperature of combustion products, Max, °C | 110-160 |
| Chimney outlet, mm | 250 |
| Connection dimensions to the heating system | 2" |
| Connecting size of the safety valve | 1" |
| Inner wall thickness of the heat exchanger, mm | 5 |
| Working pressure of the heat carrier, MPA, min / max | 0,1/0,3 |
| Vacuum behind the boiler, Pa, Max | 40 |
| Power consumption, W (220 V, 50 Hz), Max | 800 |
| Chimney pipe diameter, mm/height, m, not less | 250/8 |
| Boiler weight (without water), kg | 985 |
| Overall dimensions of the boiler with Hopper Assembly, mm (LxWxH) | 1780х1700х1750 |
| Production period, days | ≥ 90 |
| Producer | РЕТРА |
| Power capacity, kW | 80 |
| Heating area, m2 (at a height of up to 3.5 m) | 800 |
| Hopper capacity, M3 | 0,8 |
| Serial number of the boiler | 4М Combi |
| Country of Origin | Ukraine |
| Water shirt volume, L | 242 |
| Fuel type | pellets, agropellets |
| Complete set | boiler RETRA-4M PLUS: torch burner OXI EVO (EVO-C), automation and flexible auger, bunker torch BF (pellets, agropellets) |
| Heat exchanger area, m2 | 6,9 |
| Furnace volume, L | 310 |
| Upper combustion chamber size, mm (LxWxH | 780х670х600 |
| Overall dimensions of the boiler, mm (LxWxH) | 1780х930х1670 |
| Loading hatch neck size, mm (WxH) | 430х310 |
| Boiler outlet water temperature, Max, °C | 95 |
| Water temperature at the boiler inlet, not less than, °C | 55 |
| Temperature of combustion products, Max, °C | 110-160 |
| Chimney outlet, mm | 250 |
| Connection dimensions to the heating system | 2" |
| Connecting size of the safety valve | 1" |
| Inner wall thickness of the heat exchanger, mm | 5 |
| Working pressure of the heat carrier, MPA, min / max | 0,1/0,3 |
| Vacuum behind the boiler, Pa, Max | 40 |
| Power consumption, W (220 V, 50 Hz), Max | 800 |
| Chimney pipe diameter, mm/height, m, not less | 250/8 |
| Boiler weight (without water), kg | 985 |
| Overall dimensions of the boiler with Hopper Assembly, mm (LxWxH) | 1780х1700х1750 |
| Production period, days | ≥ 90 |
| Producer | РЕТРА |
| Power capacity, kW | 80 |
| Heating area, m2 (at a height of up to 3.5 m) | 800 |
| Hopper capacity, M3 | 0,8 |
| Serial number of the boiler | 4М Combi |
| Country of Origin | Ukraine |