Navien
Navien Gas Nozzle 20031095A
Gas nozzle marked 5.7X1T for Navien NCB-CE ERP system and combination boilers.
At a glance
- Part type: gas nozzle
- Appliance family: NCB-CE ERP system and combination boilers
- Gas-carrying components must be fitted and commissioned by a Gas Safe registered engineer
£3.91
£3.26 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 gas nozzle 5.7X1T is a gas train component used to meter and direct gas flow into the burner on Navien NCB-CE ERP boilers. It is a serviceable part within the combustion assembly and is matched to the appliance's gas input rating. Correct nozzle sizing is essential to stable ignition and clean combustion.
Signs this part needs replacing
- Unstable or rough flame at the burner, with poor combustion readings
- Repeated ignition failure or lockout on start-up
- Sooting or discolouration around the burner and heat exchanger
- Whistling or unusual noise from the gas train during firing
- Combustion analysis outside the appliance's specified CO/CO2 range
Before you order
- Confirm your boiler model and serial number against the manufacturer's parts list
- Check the marking on the existing nozzle matches 5.7X1T
- Gas-carrying components must be fitted and commissioned by a Gas Safe registered engineer
- Verify the appliance's gas type and input rating before fitting
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB-CE 20KW SYSTEM BOILER ERP - (Serial Number 6662) | — | — | — | |
| NAVIEN NCB-CE 20KW SYSTEM BOILER ERP - (Serial Number 6662) | — | — | — | |
| NAVIEN NCB-CE 23KW SYSTEM BOILER ERP - (Serial Number 6663) | — | — | — | |
| NAVIEN NCB-CE 23KW SYSTEM BOILER ERP - (Serial Number 6663) | — | — | — | |
| NAVIEN NCB-CE 24KW COMBINATION BOILER ERP - (Serial Number 0128) | — | — | — | |
| NAVIEN NCB-CE 24KW COMBINATION BOILER ERP - (Serial Number 0128) | — | — | — | |
| NAVIEN NCB-CE 24KW COMBINATION BOILER ERP - (Serial Number 2570) | — | — | — | |
| NAVIEN NCB-CE 24KW COMBINATION BOILER ERP - (Serial Number 2570) | — | — | — | |
| NAVIEN NCB-CE 28KW COMBINATION BOILER ERP - (Serial Number 0129) | — | — | — | |
| NAVIEN NCB-CE 28KW COMBINATION BOILER ERP - (Serial Number 0129) | — | — | — |
Showing 10 of 12 compatible appliances.
Documents & drawings
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