
Potterton
Potterton Conventional Exchanger 5142375
Conventional heat exchanger, part 5142375, for Potterton Commercial Sirius 2 and Sirius 3 boilers.
£894.66
£745.55 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 CONVENTIONAL EXCHANGER (FS50) is a conventional heat exchanger supplied under part number 5142375 for Potterton Commercial boilers. It forms the primary heat transfer component, taking heat from the combustion gases and passing it to the system water. It is listed for the Sirius 2 and Sirius 3 appliance families.
Signs this part needs replacing
- Kettling, banging or rumbling noises from the boiler during operation
- Water weeping or visible staining around the exchanger body or its connections
- Corrosion, pitting or heavy scale build-up on the exchanger surfaces
- Poor or reduced heat output to the system despite correct burner operation
- Repeated overheating or lockout faults traced to restricted heat transfer
Before you order
- Confirm the appliance model and range against the fits list, as the Sirius 2 and Sirius 3 variants are not interchangeable
- Check the part number on the existing exchanger or the appliance documentation before ordering
- Verify the FS or WH variant of the boiler, as the Wh50, Wh60 and Wh70 listings apply to units built from April 2016
- Check for any associated seals, gaskets or pipe connections that may also need attention during the swap
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL SPARES | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS50 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS70 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH50 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH60 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH70 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS50 | — | — | — |
Documents & drawings
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