Navien
Navien Heat Exchanger Inlet Adaptor 20043464A
Heat exchanger inlet adaptor for Navien LCB 700 Regular boilers, supplied under part number 20043464A.
At a glance
- Part type: heat exchanger inlet adaptor
£53.48
£44.57 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 inlet adaptor is a Navien component that connects the pipework to the inlet side of the heat exchanger on LCB 700 Regular boilers. It forms the sealed joint at the point where water enters the heat exchanger, so it must be sound and correctly seated to keep the appliance watertight. It is listed under Navien part number 20043464A.
Signs this part needs replacing
- Water weeping or dripping from the heat exchanger inlet connection
- Visible corrosion, pitting or scale build-up on the adaptor body
- Cracking or deformation of the adaptor, often after a frost event or overheating
- Repeated loss of system pressure with no other obvious source
- Staining or residue on the casing or floor beneath the inlet connection
Before you order
- Confirm the boiler model and output from the data badge before ordering
- Check the serial number against the appliance to confirm it falls within the LCB 700 Regular range
- Inspect the existing adaptor and surrounding pipework to confirm the fault lies with this part rather than the joint or seal
- Verify the part number 20043464A matches the number on the component being replaced
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 28KW (Serial Number 1478) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 28KW (Serial Number 1478) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 36KW (Serial Number 1482) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 36KW (Serial Number 1482) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 28KW (Serial Number 1477) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 28KW (Serial Number 1477) | — | — | — |
Showing 10 of 12 compatible appliances.
Documents & drawings
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