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NTI · Boiler troubleshooting

Check the burner

TRX150

What is going on

Burner check on the TRX150. Combustion assembly is out of the heat exchanger, so look it over while you can. Gaskets do not get reused.

Likely causes

  • Burner surface damaged or cracked from age or overheating
  • Old burner gasket compressed and leaking combustion gas
  • Ceramic fiber crumbled or disturbed during removal

Check in this order

  1. Power off, gas off, then remove the four screws holding the two electrodes to the burner plate and pull the electrodes.
  2. Remove the ceramic fiber.
  3. Remove the four screws and pull the burner out.
  4. Inspect the burner and replace it if damaged.
  5. When replacing the burner, always fit a new burner gasket.
  6. Leak check and verify flame on restart.

Applies to: TRX150

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Source: NTI TRX150 manual, p. 97. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.