The Riello RS 810/E FGR is an automatic monobloc forced-draught Low NOx gas burner with electronically modulating operation and a firing range of 1100/3500–6990 kW.
Product Specification
- Combustion-air damper, gas regulator and FGR butterfly valve with independent precision servomotors.
- Adjustable Low NOx combustion head with a stainless-steel end cone and flame-stabilising disc.
- FGR temperature probe to prevent condensation at the burner intake.
- LMV51.300 digital burner management for air, fuel and recirculated flue-gas control.
- Integrated temperature/pressure PID modulation and LCD operator panel with diagnostics.
- UV flame detection, air-pressure switch and maximum gas-pressure switch.
- Fan motor contactor, resettable thermal relay and internal thermal protection.
- Dry-contact relay outputs and illuminated lockout reset.
- Hinged burner opening and lifting rings.
- On/off switch, manual/automatic output selector, and operating/fault indicators.
Electrical and Operating Data
- Power supply: 400 V, three-phase with neutral, 50 Hz.
- Maximum electrical input: 24.5 kW.
- Electrical protection: IP54.
- Duty: FS1: one shutdown every 24 hours; FS2: one shutdown every 72 hours. Factory setting: FS1.
Standard Equipment
- Thermal insulation screen and boiler-flange fixing screws.
- Gas-train flange gasket and fixing screws.
- Gas-train leak-detection pressure switch.
- Installation, operation and maintenance manual; spare-parts catalogue.
FGR operating range: the stated firing range applies at 0% flue-gas recirculation to EN 676 Class 3. Riello specifies a reduction of at least 20% in maximum output when FGR is used to achieve 30 mg/Nm³ NOx; the series ultra-low-NOx rating is referenced to 3.5% O₂.
