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NTI Boiler: Check the condensate drain

Updated · by Aurora Star Tech Inc.

Check the condensate drain on a NTI boiler: Dry trap on the TRX150. Flue gas coming out of the condensate drain. Trap has to hold water or the seal is gone. Not a guess-and-go item, since it is combustion gas.

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

Applies to: TRX150

Common causes of check the condensate drain

  • Dry condensate drain trap
  • Trap never primed after install or service
  • Blocked or cracked trap or drain line

How to fix check the condensate drain: step by step

  1. With the boiler running, hold your fingers near the discharge end of the condensate drain tubing.
  2. If you feel flue gas, the trap is probably dry.
  3. Check the trap and drain line for blockage or damage.
  4. If the problem continues, call a qualified service technician to check the boiler, condensate line and trap.
  5. Do not run the boiler long with flue gas escaping, and ventilate the room.
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

Models

TRX085TRX110CTRX150TRX199TRX199C

Source: NTI TRX150 manual, p. 88. 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.

Emergency Boiler Repair

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