Navien
Navien Cold Water Inlet Adaptor 30029947A
Cold water inlet adaptor for Navien NCB500 combi boilers, part number 30029947A.
At a glance
- Part type: cold water inlet adaptor
- Appliance family: NCB500 series
£51.07
£42.56 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 cold water inlet adaptor is a Navien connection component fitted to NCB500 series combi boilers. It forms the entry point where the mains cold water supply connects to the appliance. It is supplied under Navien part number 30029947A.
Signs this part needs replacing
- Water weeping or dripping from the cold water inlet connection
- Visible corrosion, scaling or pitting on the adaptor body
- Cracking or deformation at the threaded connection
- Loss of pressure at the inlet joint after the supply is opened
- Staining or mineral deposits around the inlet area
Before you order
- Confirm your boiler model against the fitment list above
- Check the serial number of your appliance matches the range covered
- Verify the existing part number 30029947A before ordering
- Inspect the surrounding pipework and seals for damage that may also need attention
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| 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) | — | — | — | |
| NAVIEN NCB500-2S/37K COMBI - (Serial Number 3735) | — | — | — | |
| NAVIEN NCB500-2S/37K COMBI - (Serial Number 3735) | — | — | — |
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.
No technical questions yet for this part.
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