The Riello P 450 P/G is an automatic monobloc forced-draught light oil burner with progressive two-stage or modulating operation and a firing range of 1190/2670–5340 kW.
Progressive two-stage operation; continuous modulation with a load regulator and the corresponding probe.
Product Specification
- Forward-curved fan and combustion-air intake.
- Variable-cam servomotor controlling the air damper and oil-output regulator.
- Adjustable combustion head with a stainless-steel end cone, ignition electrodes and flame-stabilising disc.
- Gear pump with an integral filter, pressure regulator, pressure/vacuum gauge connections and a single-pipe conversion bypass.
- Double safety valves on the oil supply circuit and double safety valves on the return circuit.
- Return-oil safety pressure switch.
- Photocell flame detection.
- Flame control with servomotor-position monitoring and provision for post-ventilation.
- Flame inspection window and slide bars for installation and servicing.
- Radio-interference filter.
Electrical and Operating Data
- Power supply: 400 V, three-phase with neutral, 50 Hz.
- Motor speed: 2,850 rpm.
- Electrical protection: IPX0D (IP40).
- Fan motor power: 15 kW.
- Total electrical input: 18 kW.
- Auxiliary supply: 230 V, single-phase, 50 Hz.
- Modulation ratio at maximum output: 3:1.
- Burner control: LAL1.25.
- Light oil viscosity: 4–6 mm²/s (cSt) at 20°C.
- Duty: intermittent, with at least one shutdown every 24 hours.
Standard Equipment
- Two flexible oil hoses and two pump connection nipples.
- Boiler-flange fixing screws and electrical wiring fittings.
- Installation, operation and maintenance manual; spare-parts catalogue.
- Star/delta starter supplied with the star/delta motor version.
