Navien
Navien LCB 700 Inner Tube 20044766B
Inner tube 20044766B for Navien LCB 700 combi, regular and system boilers.
At a glance
- Appliance family: LCB 700, 36KW output
£27.85
£23.21 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 TUBE; INNER (part number 20044766B) is a Navien component intended for the LCB 700 range of 36KW gas boilers. It forms part of the internal assembly on these appliances and is supplied as an individual part for service or repair work. The part is listed by the manufacturer under the description TUBE; INNER.
Signs this part needs replacing
- Visible corrosion, pitting or thinning on the tube wall
- Cracks, splits or distortion along the tube length
- Staining or residue at the tube joints or seals suggesting a weep
- Discolouration or heat marking indicating abnormal operating conditions
- Tube found damaged or seized during routine servicing
Before you order
- Confirm the boiler model and whether the appliance is the internal or external variant
- Check the serial number against the appliance data plate, as the LCB 700 range is listed here by serial number reference
- Compare the existing part and its marking against the part number 20044766B before ordering
- If in doubt about fitment, verify the part against the manufacturer's appliance literature for the specific serial number
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN LCB 700 COMBI EXTERNAL 36KW (Serial Number 1709) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 36KW (Serial Number 1709) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 36KW (Serial Number 1708) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 36KW (Serial Number 1708) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 36KW (Serial Number 1482) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 36KW (Serial Number 1482) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 36KW (Serial Number 1481) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 36KW (Serial Number 1481) | — | — | — | |
| NAVIEN LCB 700 SYSTEM EXTERNAL 36KW (Serial Number 1480) | — | — | — | |
| NAVIEN LCB 700 SYSTEM EXTERNAL 36KW (Serial Number 1480) | — | — | — |
Showing 10 of 12 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.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.