Riello RDB Light Oil Burners Explained: Setup, Applications & Spares (RDB 2 90-120)
- The RDB 2 90-120 is designed for light fuel oils (LDO) or diesel with a portable chassis.
- It features a built-in Riello gear pump with a pressure adjustment valve for easy calibration.
- A clean nozzle (such as Danfoss) and correct electrode spacing are critical to avoid starting lockouts.
- Ensure replacement parts are original Riello or verified compatible brands like Suntec or Danfoss.
The Riello RDB 2 90-120 is a compact, highly portable, and reliable light oil burner widely used in small boilers, laundry heaters, and portable hot air units. Its simple layout makes setup and regular maintenance straightforward for field service engineers.
Riello is a global leader in domestic and light industrial heating, and the RDB series is one of their most popular product ranges. The Riello RDB 2 90-120 model is a compact, light-oil (LDO/diesel) burner engineered for reliability and portability. It is widely installed in package boilers, paint booths, hot water washers, and food machinery. This guide covers the essential setup steps, maintenance checklist, and spare parts sourcing for this versatile burner.
Key Technical Design of the Riello RDB 2 The RDB 2 features a highly integrated design where the combustion fan, air damper, fuel pump, and control box are housed under a single compact cover. It operates on standard single-phase AC electricity and is designed for quick mechanical mounting. The burner blast tube is made of high-grade stainless steel to resist thermal corrosion, and the burner nozzle assembly can be easily accessed by removing the burner cover, making servicing quick and simple.
Step-by-Step Setup and Calibration Setting up the Riello RDB 2 for optimal combustion efficiency involves several critical adjustments: 1. Select the correct nozzle: Choose a Danfoss or Steinen nozzle that matches your required fuel flow rate (usually specified in US Gallons per hour). 2. Adjust pump pressure: Connect a pressure gauge to the Riello gear pump. Adjust the pressure screw (typically set to 10-12 bar) to achieve optimal diesel atomization. 3. Calibrate air damper: Adjust the air index slider to ensure clean combustion without excess smoke or unburned fuel smell.
Crucial Maintenance Checklist To prevent unexpected starting failures and lockouts, follow this periodic maintenance checklist: - Weekly: Pull out the photoresistance flame sensor and wipe the lens. A dusty lens will fail to see the flame and trigger a lockout. - Monthly: Inspect the ignition electrodes. Clean off any carbon deposits and check that the electrode gap is set precisely to the manufacturer's specification (usually 3 to 4 mm). - Bi-annually: Replace the nozzle and clean the inner gear pump filter.
Cross-Linking to Relevant Spare Parts Many burner faults are easily resolved by replacing standard consumables. Sourcing genuine Riello spares (or verified compatible brands like Danfoss for nozzles, Suntec for pumps, and Siemens for sequence controllers) ensures that the burner maintains its high safety rating. Gajanand Engineering stocks a complete inventory of these spares for quick dispatch.
Burner Spare Part Comparison Table
| Feature | Riello RDB 2 Burner | Generic Portable Burner |
|---|---|---|
| Manufacturer | Riello S.p.A. (Italy) | Local assembly |
| Pump Integration | Built-in Riello pump with solenoid valve | External pump assembly |
| Flame Detector | Riello-specific photoresistance cell | Standard photocell |
| Casing | Compact plastic/die-cast composite casing | Sheet steel cover |
We use portable heating units for our on-site laundry cleaning services in Surat. The Riello RDB 2 burner is extremely robust; it starts reliably even after transport vibration and runs efficiently.— Vipul Shah, Operations Lead, QuickWash Laundries, Surat
Frequently Asked Questions
Is the Riello RDB 2 burner portable?
Yes, the Riello RDB 2 90-120 features a compact, light-weight design, making it highly portable and suitable for mobile heating equipment.
Where can I buy a Riello RDB light oil burner in Gujarat?
You can purchase a genuine light oil burner (model Riello RDB 2) directly from Gajanand Engineering & Services in Ahmedabad.
What nozzle does the Riello RDB 2 use?
It uses standard high-precision nozzles (like Danfoss or Steinen). You can get the correct matching nozzle for your light oil burner from Gajanand.
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Sukhdev founded Gajanand Engineering And Services in 2012 and has over 12 years of hands-on technical expertise calibrating, servicing, and supplying industrial combustion systems and original boiler spares across Gujarat and India.
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