The Riello 40 GS20 is a single-stage natural-gas burner with a heat output of 81–220 kW. The MG 557 safety controller provides flame supervision and diagnostics, while the air damper closes fully during standby.
Product Specification
- Fully automatic monobloc gas burner with single-stage on/off operation.
- Forward-curved fan and sound-insulated cover.
- Air damper closes completely during standby, with air adjustment inside the cover.
- Combustion head with a heat-resistant stainless-steel cone, ignition electrodes, ionisation probe, gas distributor and flame-stability disc.
- Adjustable air-pressure switch with a graduated selector; locks out the burner if combustion-air pressure is insufficient.
- MG 557 microprocessor-based burner safety controller with diagnostics, remote reset, continuous purge, recycle and post-purge functions.
Electrical and Operating Data
- Heat output: 81–220 kW.
- Natural-gas flow: 8.1–22 Nm³/h at a net calorific value of 10 kWh/Nm³.
- Power supply: single-phase, 230 V, 50 Hz.
- Total electrical power: 0.250 kW.
- Protection: IPX0D (IP40).
- Standard: EN 676.
Standard Equipment
- Flange insulation screen and screws and nuts for fixing the flange to the boiler.
- 7-pole socket, hinge and grommet.
- Installation, operation and maintenance handbook, and spare-parts catalogue.
