Navien
Navien Mixing Chamber 20022750B
Navien mixing chamber, part number 20022750B, for NCB-CE system and combination boilers and NPE-AWE/NPE-SWE units.
£31.01
£25.84 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 mixing chamber is a Navien component (part number 20022750B) used within the hydraulic circuit of Navien NCB-CE system and combination boilers, and NPE-AWE and NPE-SWE units. It blends returning and supplied water flows before they pass through the heat exchanger. It is a serviceable part, listed by the manufacturer as Boiler type.
Signs this part needs replacing
- Reduced or unstable hot water temperature at the outlets
- Water weeping or traces of scale around the chamber body or its connections
- Boiler cycling or locking out with flow or temperature related fault codes
- Debris or scale build-up found in the chamber on inspection
- Noise or vibration from the hydraulic section during operation
Before you order
- Confirm the appliance model and serial number against the fitment list
- Check the existing part number on the component matches 20022750B
- Inspect the surrounding seals, pipework and connections for damage before refitting
- Confirm whether any adjacent gaskets or O-rings require renewal at the same time
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB-CE 28KW SYSTEM BOILER ERP - (Serial Number 6664) | — | — | — | |
| NAVIEN NCB-CE 28KW SYSTEM BOILER ERP - (Serial Number 6664) | — | — | — | |
| NAVIEN NCB-CE 33KW SYSTEM BOILER ERP - (Serial Number 6665) | — | — | — | |
| NAVIEN NCB-CE 33KW SYSTEM BOILER ERP - (Serial Number 6665) | — | — | — | |
| NAVIEN NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 0130) | — | — | — | |
| NAVIEN NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 0130) | — | — | — | |
| NAVIEN NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 2572) | — | — | — | |
| NAVIEN NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 2572) | — | — | — | |
| NAVIEN NCB-CE 40KW COMBINATION BOILER ERP - (Serial Number 0131) | — | — | — | |
| NAVIEN NCB-CE 40KW COMBINATION BOILER ERP - (Serial Number 0131) | — | — | — |
Showing 10 of 14 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 — NCB-CE 28KW SYSTEM BOILER ERP - (Serial Number 6664), NCB-CE 33KW SYSTEM BOILER ERP - (Serial Number 6665), NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 0130), NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 2572), NCB-CE 40KW COMBINATION BOILER ERP - (Serial Number 0131)
manualmanualNAVIEN appliance manual — NPE-AWE CE-24A - (Serial Number 5093), NPE-SWE CE-24S - (Serial Number 5094)
manualNo technical questions yet for this part.
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