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NTI Boiler: Use the correct gas diaphragm and mixer for the fuel

Updated · by Aurora Star Tech Inc.

Use the correct gas diaphragm and mixer for the fuel on a NTI boiler: Install the gas diaphragm and mixer that match natural gas or propane. Propane needs the mixer from the conversion kit.

Homeowner with a boiler problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

Applies to: TRX150

How to fix use the correct gas diaphragm and mixer for the fuel: step by step

  1. Check the fuel type before fitting the mixer or diaphragm.
  2. For propane, install the mixer from the natural gas to propane conversion kit and the gas diaphragm required for propane.
  3. Follow the conversion kit instructions.
Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

If the unit shows an error code, look it up: NTI Boiler codes

More other tips for boiler

Source: NTI TRX150 manual, p. 93. 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.

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