NTI Boiler: Replace the gas valve
Replace the gas valve on a NTI boiler: Swapping the gas valve on the TRX150 is a straightforward job if you take it in order, but it is gas, so it belongs to a licensed technician. You get to the valve by removing the gas pipe the same way you would for cleaning the combustion chamber, and new sealing rings go in every time.
Applies to: TRX150
Common causes of replace the gas valve
- Gas valve not opening, or leaking internally
- Old sealing rings no longer sealing after the valve is disturbed
- Gas pipe not seated properly after reassembly
How to fix replace the gas valve: step by step
- Turn off power and close the gas shutoff, then remove the gas pipe as described in the combustion chamber cleaning procedure.
- Disconnect the electrical connection from the gas valve.
- Remove the two nuts above and below the gas valve.
- Take the gas valve out.
- Install the new valve in reverse order using new sealing rings.
- Check every joint for gas leaks before you leave.
If the unit shows an error code, look it up: NTI Boiler codes
Source: NTI TRX150 manual, p. 100. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.