The Riello Gulliver RG5D is an automatic monobloc light oil burner with two-stage operation and a firing range of 95/142–296 kW. Two nozzles operate at a common oil pressure, one for each firing stage.
Product Specification
- Centrifugal fan with forward-curved blades and an acoustically lined cover.
- Air damper with separate first- and second-stage settings; external second-stage adjustment and full closure during standby.
- Adjustable combustion head with a stainless-steel cone, ignition electrodes and flame-stabilising disc.
- Gear-type oil pump with an integral filter, pressure regulator, pressure/vacuum gauge connections and an internal bypass for single-pipe operation.
- Pump-mounted fuel solenoid valve, photocell flame detection and electronic flame supervision.
- Two factory-fitted oil nozzles.
Electrical and Operating Data
- Power supply: 230 V ±10%, single-phase, 50 Hz.
- Fan motor: 0.25 kW; total electrical input: 0.47 kW.
- Electrical protection: IP40.
- Fuel viscosity: 4–6 mm²/s at 20°C; fuel preheater: none.
- Duty: intermittent, with at least one shutdown every 24 hours.
Standard Equipment
- Two flexible oil hoses and two pump connection nipples.
- Mounting flange, fixing screws and nuts, and a thermal screen.
- 4-pin plug; 7-pin plug except on MO550-equipped versions.
- Installation, operation and maintenance manual; spare-parts catalogue.


