The modulation version of the RL series. Unlike two—stage burners, the burner continuously adjusts the fuel and air supply to the current load, which ensures accurate temperature maintenance and high seasonal efficiency. Seven standard sizes from 101 to 2700 kW.

| Manufacturer | ExEco |
| Series | RL/M |
| Burner type | Monoblock, two-stage progressive or modulation |
| Heat output | 101-2700 kW |
| Fuel type | Diesel fuel |
| Control type | Progressive or modulated — a smooth change in power over the operating range |
| Number of sizes | 7 |
| Power supply | 230/1/50, 400/3/50 V/phase/Hz |
| Noise level | 68-85,4 dB |
| Ambient temperature | from 0 to +50 °C |
| Electrical protection rating | IP44 |
| Control system | Microprocessor control and safety unit with fault diagnostics |
| Connection | Flanged, with heat shield and fixing kit |
| Scope of supply | Burner, nozzles, fuel filter, flexible fuel hoses, gasket, heat shield, fixings, data sheet and manual |
| Model | Heat output, kW | Power supply, V/phase/Hz |
| RL 38/M | 101/237÷450 | 230/1/50 |
| RL 50/M | 130/297÷593 | 400/3/50 |
| RL 70/M | 255/474÷830 | 400/3/50 |
| RL 100/M | 356/711÷1186 | 400/3/50 |
| RL 130/M | 486/948÷1540 | 400/3/50 |
| RL 190/M | 759/1423÷2443 | 400/3/50 |
| RL 250/M | 600/1250÷2700 | 400/3/50 |
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