Riello
Riello RDB2.2 21-26kW Oil Burner 70-90,000 BTU/h - 3514257
Riello
Riello RDB2.2 21-26kW Oil Burner 70-90,000 BTU/h - 3514257
Riello RDB2.2 21-26kW Oil Burner - 3514257
The Riello RDB2.2 21-26kW Oil Burner - 3514257 is a genuine Riello single-stage pressure jet burner designed for dependable operation in compatible domestic and light commercial oil-fired heating appliances.
With a nominal application output range of 21-26kW, equivalent to approximately 70,000-90,000 BTU/h, this RDB2.2 burner is particularly associated with compatible Warmflow oil-fired boilers and is identified by Riello burner code 3514257, type 744T2K and Warmflow reference 3104.
The Riello RDB range is well known throughout the heating industry for its compact dimensions, reliable operation, straightforward servicing and wide availability of replacement components. Every RDB burner is fired and tested before leaving the Riello factory.
Key Features
- Genuine Riello RDB2.2 oil burner
- Manufacturer code: 3514257
- Burner type: 744T2K
- Warmflow reference: 3104
- Nominal application output range: 21-26kW
- Approximately 70,000-90,000 BTU/h output class
- Single-stage pressure jet burner
- Designed primarily for kerosene-fired heating applications
- Compact RDB2.2 design
- Designed for low operating noise
- Reliable Riello geared fuel pump
- Simple servicing and adjustment
- Widely available genuine replacement components
- 230V single-phase electrical supply
- Type 744T2K combustion arrangement
- Factory fired and tested by Riello
- EN 267 approved
Technical Specification
- Brand: Riello
- Range: RDB
- Model: RDB2.2 21-26
- Manufacturer Part Number: 3514257
- Riello Type: 744T2K
- Warmflow Reference: 3104
- Product Type: Pressure Jet Oil Burner
- Operation: Single Stage
- Nominal Application Output: 21-26kW
- Approximate BTU Output Class: 70,000-90,000 BTU/h
- Primary Fuel: Kerosene
- Electrical Supply: 230V / 50Hz Single Phase
- Motor Running Current: Approx. 0.85A
- Motor Speed: Approx. 2700rpm
- Motor Capacitor: 4.5µF
- Maximum Kerosene Pump Pressure: 10 bar / 145psi
- Electrical Power Absorption: Approx. 0.16kW
- Approximate Height: 225mm
- Approximate Width: 286mm
- Approximate Depth: 207mm
- Blast Tube Length: Approx. 65mm
- Blast Tube Diameter: Approx. 72mm
- Application: Compatible domestic and light commercial oil-fired boilers
Compact & Reliable RDB Design
Riello developed the RDB burner range with particular emphasis on compact dimensions, reduced operating noise and ease of installation and servicing. This makes the RDB2.2 a popular burner platform throughout the UK and Ireland.
The burner incorporates proven Riello components including the motor, fuel pump, control box, photocell, ignition system and combustion head, with replacement service components widely available.
21-26kW Heating Output
This version is configured for heating appliances requiring a nominal burner output in the 21-26kW range. This corresponds approximately to the traditional 70/90 oil boiler output class.
The exact burner setup, nozzle specification, pump pressure, combustion head and air adjustment must always be determined by the requirements of the boiler manufacturer rather than by burner output alone.
Warmflow Compatibility
Riello identifies burner code 3514257 as the RDB2.2 21-26 Warmflow model. It is also referenced as 744T2K and Warmflow part number 3104.
Compatibility should always be confirmed against the existing burner data plate, boiler manufacturer information and appliance model before ordering.
Important - Flange & Gasket
Please note: Current replacement RDB2.2 burner units may be supplied without the Riello mounting flange and insulating gasket. These should be ordered separately if required for the installation.
Check the contents of the burner package and whether the existing flange is suitable before installation.
Fuel & Installation Requirements
The burner is designed primarily for kerosene heating applications. Riello documentation also references compatibility of certain RDB components with low sulphur fuels and biofuel blends, but suitability depends on the specific appliance, hoses and hydraulic components being used.
Never change the fuel type, nozzle, pump pressure or burner setup without confirming compatibility with the boiler manufacturer and Riello technical documentation.
Professional Installation & Commissioning Required
This oil burner must be installed, set up and commissioned by a suitably qualified oil heating engineer. In the UK, an OFTEC registered technician is recommended.
Correct combustion analysis is essential. The engineer must confirm nozzle specification, oil pressure, air adjustment, smoke number, CO₂ level, flue performance and safe appliance operation during commissioning.
Important Compatibility Information
Do not select an RDB burner based solely on the wording "RDB2.2" or "70/90". Riello manufactures numerous RDB2.2 variants for different boiler manufacturers, combustion heads and applications.
Before ordering, compare the complete manufacturer code and type number on the existing burner. For this product these should read 3514257 and 744T2K where the Warmflow 21-26kW version is required.
Delivery Times
All our deliveries are made by some of the countries most trusted couriers, including Royal Mail, PacelForce, DHL , Fastway Curriers. For most larger sized deliveries, you will receive a call from the courier an hour before the scheduled delivery time.
Free Delivery
Free delivery when you spend £150+ on all our stocked items, up to the maximum 20kg in weight (UK & Ireland Only) To be eligible for this service, you must place your order before 1pm on the previous day.
Delivery Drop Off
It is important to note that we use external shipping couriers. They are responsible for delivering the item(s) to the kerb-side. They are not responsible for delivering items into your home*.
*Please note, for large orders we advise that you seek assistance from friends or neighbours to assist with moving your order, as often the driver will not be able to assist you. Some items may be delivered on a pallet. It is your responsibility to dispose of the pallet, however, we recommend keeping it for the first 14 days in case you need to return your item(s).
Failed Deliveries
In the unlikely event that delivery is attempted when you are not at home, we will contact you by phone and re-book another time that suits you. Please note, there may be a re-delivery charge added at our discretion, which will be reviewed on a case by case basis.
Direct Deliveries from Distribution Centers
To help you receive your items as quickly as possible, parts of your order may be dispatched directly from a distribution center (Ie) Amazon. If this is the case, you will be contacted directly by them to arrange delivery for the products concerned. Please note, these items will arrive at a different time to products dispatched from our head warehouse. Some distribution centers may take between 2-3 days to deliver items.
Non-Stocked Items
Some items are ordered into our warehouse especially for your orders. This means there may be additional lead times on your order arriving. The estimated delivery time for non-stocked items is 5-7 working days.
For orders that contain a mixture of stock and non-stock items, excluding items delivered directly from distribution centers, we will deliver all items together. We will make you aware of this when we phone or email you to confirm the delivery date. You will be given the option to receive them separately as well, however there may be additional shipping charges.
Shipping Rates
All Orders to the UK & Ireland *ONLY*up to 20kg £150+ is Free
Pallet Rates are priced on application and order... delivery lead times will also vary based on post code.
Returns
Returns are subject too a 50% re-stocking charge.
- Items installed/fitted without professional understanding IE Oftec/SafeGas Registered Installer certificates, invalidate any warranty of said item bought.. This is however is at the companies discretion.
- All products must be inspected within 24hrs. Goods are non-returnable after this period.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Several types of goods are exempt from being returned. Goods including but not limited to printed circuit boards, control boxes, chemicals, hazardous materials, flammable liquids or gases. Please ask if you are unsure if you can return your goods.
Some items are not returnable such as PCB Boards and Boilers if they are opened, There also will be a 25% Handling fee for All Items if accepted for return.
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer unless otherwise instructed by Spares Direct.
There are certain situations where only partial refunds are granted (if applicable):
- Any item not in its original condition, is damaged or missing parts for reasons not due to manufacturer / supplier error.
- Any item that is returned more than 30 days after delivery
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund, please contact us at info@sparesdirect.ie
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at info@sparesdirect.ie and send your item to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
Unwanted goods or Failed deliveries of items bought
If for any reason you order from us and the item has been shipped, but you no longer wish to have the item, the goods should be returned to us at the consumers cost. The price of goods will be refunded upon delivery/inspection (please note carriage cost will NOT be refunded. This also applies to missed deliveries/collection of goods from currier depot.
Shipping
To return your product, you should mail your product to: Unit 5 Dargan Industrial Park, 62 Dargan Crescent, Belfast BT3 9JP.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over £50, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.
