Navien
Navien Plate Heat Exchanger 30017502B
Plate heat exchanger for the Navien NCB300-28K Combi boiler, part number 30017502B.
At a glance
- Appliance family: NCB300-28K Combi
£105.12
£87.60 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 Navien plate heat exchanger is a brazed plate component used in the NCB300-28K Combi boiler. It transfers heat from the primary circuit to the domestic hot water side, separating the two water paths. The part is identified by part number 30017502B.
Signs this part needs replacing
- Domestic hot water running cool or failing to reach temperature
- Hot water temperature fluctuating at the tap during draw-off
- Reduced hot water flow rate compared with previous performance
- Scale or debris build-up restricting the domestic hot water side of the plate
- Water weeping from the plate pack or its connections
Before you order
- Confirm the appliance model is NCB300-28K Combi
- Check the appliance serial number against the fitment listed above
- Verify the existing part number is 30017502B
- Inspect the domestic hot water circuit for scale or debris before fitting
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) | — | — | — |
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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