Riello
Riello Diffuser Plate 3003849
Riello diffuser plate, part number 3003849, for use in Riello burner assemblies.
£22.38
£18.65 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The diffuser plate (listed as a disc) is a Riello burner component, identified by part number 3003849. It sits within the burner head assembly and shapes the airflow around the combustion zone. It is used across a range of Riello RS 50 and RS 50/m burner variants fitted to boilers.
Signs this part needs replacing
- Visible distortion, cracking or burn-through of the plate
- Soot deposits or heavy carbon build-up around the burner head
- Unstable or pulsating flame during commissioning or service
- Poor combustion readings that cannot be corrected by air and gas adjustment
- Noise or vibration from the burner head area
Before you order
- Confirm the burner model and code against the fit list above
- Check the burner type number (811 T1, 826 T80 or 826 T1) matches your unit
- Verify the existing part number 3003849 on the component or in the manufacturer's parts list
- Inspect the burner head assembly for related wear before reassembly
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| RIELLO BURNER SPARES | — | — | — | |
| RIELLO RS 50 - CODE 3784620 - TYPE 811-T1 | — | — | — | |
| RIELLO RS 50 - CODE 3784621 - TYPE 811-T1 | — | — | — | |
| RIELLO RS 50 - CODE 3784622 - TYPE 811-T1 | — | — | — | |
| RIELLO RS 50 - CODE 3784623 - TYPE 811-T1 | — | — | — | |
| RIELLO RS 50 - CODE 3784700 - TYPE 811 T1 | — | — | — | |
| RIELLO RS 50 - CODE 3784701 - TYPE 811 T1 | — | — | — | |
| RIELLO RS 50 - CODE 3784702 - TYPE 811-T1 | — | — | — | |
| RIELLO RS 50 - CODE 3784703 - TYPE 811-T1 | — | — | — | |
| RIELLO RS 50/M - CODE 3781682 - TYPE 826 T80 | — | — | — |
Showing 10 of 15 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
RIELLO appliance manual — RS 50 - CODE 3784620 - TYPE 811-T1, RS 50 - CODE 3784621 - TYPE 811-T1, RS 50 - CODE 3784622 - TYPE 811-T1, RS 50 - CODE 3784623 - TYPE 811-T1
manualmanualRIELLO appliance manual — RS 50 - CODE 3784700 - TYPE 811 T1, RS 50 - CODE 3784701 - TYPE 811 T1, RS 50 - CODE 3784702 - TYPE 811-T1, RS 50 - CODE 3784703 - TYPE 811-T1
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