Navien
Navien Adaptor Heat Exchanger Inlet 30021073B
Heat exchanger inlet adaptor for Navien LCB 700 Regular boilers, supplied under part number 30021073B.
At a glance
- Part type: heat exchanger inlet adaptor
- Appliance family: LCB 700 Regular
£103.63
£86.36 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 water-side connection at the heat exchanger entry point, so it must seal correctly and be matched to the appliance variant. It is listed under Navien part number 30021073B.
Signs this part needs replacing
- Water weeping or visible drips at the heat exchanger inlet connection
- Staining, scale or corrosion around the adaptor joint
- A joint that will not seal after the connection has been remade
- Restricted flow or debris build-up at the inlet connection
- Physical damage or distortion to the adaptor body or its sealing face
Before you order
- Confirm the appliance is an LCB 700 Regular model
- Check whether the installation is the Internal or External variant
- Confirm the boiler output rating: 21KW, 28KW or 36KW
- Verify the part number 30021073B against the manufacturer's parts list for your appliance
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) | — | — | — |
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Documents & drawings
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