Navien
Navien Heat Exchanger Outlet Adaptor 30028083A
Heat exchanger outlet adaptor for Navien NCB300 and NCB500 combi boilers, part number 30028083A.
£7.06
£5.88 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 heat exchanger outlet adaptor for Navien NCB combi boilers, supplied under part number 30028083A. It forms the connection at the outlet side of the heat exchanger, directing flow from the exchanger into the boiler's pipework. It is used across the Navien NCB300 and NCB500 combi ranges.
Signs this part needs replacing
- Water weeping or dripping from the heat exchanger outlet connection
- Staining, crusting or limescale deposits around the adaptor
- Corrosion or pitting on the adaptor body
- Cracks, distortion or thread damage at the connection
- Loss of system pressure traced to the outlet joint
Before you order
- Confirm your boiler model against the fit list above
- Check the serial number of your appliance, as fitment is listed by model and serial range
- Verify the part number on the existing component where it is legible
- Inspect the associated seals and washers, as these are not confirmed as part of this item
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB300-28K COMBI - (Serial Number 3710) | — | — | — | |
| NAVIEN NCB300-28K COMBI - (Serial Number 3710) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-41K COMBI - (Serial Number 3711) | — | — | — | |
| NAVIEN NCB300-41K COMBI - (Serial Number 3711) | — | — | — | |
| NAVIEN NCB500-1S+/32K COMBI - (Serial Number 3924) | — | — | — | |
| NAVIEN NCB500-1S+/32K COMBI - (Serial Number 3924) | — | — | — | |
| NAVIEN NCB500-2S+/41K COMBI - (Serial Number 3712) | — | — | — | |
| NAVIEN NCB500-2S+/41K COMBI - (Serial Number 3712) | — | — | — |
Showing 10 of 12 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.
NAVIEN appliance manual — NCB300-28K COMBI - (Serial Number 3710), NCB300-37K COMBI - (Serial Number 3734), NCB300-41K COMBI - (Serial Number 3711)
manualmanualNAVIEN appliance manual — NCB500-1S+/32K COMBI - (Serial Number 3924), NCB500-2S+/41K COMBI - (Serial Number 3712), NCB500-2S/37K COMBI - (Serial Number 3735)
manualNo technical questions yet for this part.
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