The Riello RL 190/M is an automatic monobloc forced-draught light oil burner with progressive two-stage or modulating operation and a firing range of 534/1423–2431 kW.
Progressive two-stage operation; continuous modulation with a load regulator and the corresponding probe.
Product Specification
- Forward-curved fan and combustion-air intake lined with sound-insulating material.
- 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.
- On/off switch and manual/automatic output selector.
Electrical and Operating Data
- Power supply: 400 V, three-phase with neutral, 50 Hz.
- Motor speed: 2,800 rpm.
- Electrical protection: IP44.
- Fan motor power: 4.5 kW.
- Total electrical input: 5.5 kW.
- Auxiliary supply: 230 V, single-phase, 50 Hz.
- Modulation ratio at maximum output: 3:1.
- Burner control: LAL1.25 for intermittent duty; LOK16 for continuous duty.
- Light oil viscosity: 4–6 mm²/s (cSt) at 20°C.
Standard Equipment
- Two flexible oil hoses with gaskets and two pump connection nipples.
- Boiler-flange fixing screws, thermal screen and electrical wiring fittings.
- Two slide-bar extensions.
- Installation, operation and maintenance manual; spare-parts catalogue.
Return nozzles: ordered separately.
