Navien
Navien Oil Nozzle 20043603A
Oil nozzle rated 0.55G with an 80ES specification, used in Navien LCB 700 boilers.
At a glance
- Appliance family: LCB 700
£13.55
£11.29 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 oil nozzle, part number 20043603A, is a 0.55G nozzle with an 80ES specification. It is fitted to Navien LCB 700 oil-fired boilers, where it atomises the oil supply for combustion. The nozzle rating and spray specification determine how the fuel is delivered into the burner.
Signs this part needs replacing
- Sooting or black smoke at the flue, indicating poor atomisation
- Unstable or rough flame at the burner
- Repeated boiler lockouts or failed ignition
- Visible blockage, damage or wear at the nozzle tip
- Rising fuel consumption without a change in demand
Before you order
- Confirm your appliance is a Navien LCB 700 model
- Check the model and serial number against the fitment list above
- Verify the existing nozzle is marked 0.55G and 80ES
- Confirm the boiler is oil-fired before ordering
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN LCB 700 COMBI EXTERNAL 21KW (Serial Number 1705) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 21KW (Serial Number 1705) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR EXTERNAL 21KW (Serial Number 1474) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 REGULAR INTERNAL 21KW (Serial Number 1472) | — | — | — | |
| NAVIEN LCB 700 SYSTEM EXTERNAL 21KW (Serial Number 1471) | — | — | — | |
| NAVIEN LCB 700 SYSTEM EXTERNAL 21KW (Serial Number 1471) | — | — | — |
Showing 10 of 12 compatible appliances.
Documents & drawings
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