NTI Boiler: Vent diameter by model
Vent diameter by model on a NTI boiler: Vent pipe sizing rules by model.
Applies to: All models
How to fix vent diameter by model: step by step
- All models ship with 3 in vent connections.
- 150 models may use 2 in pipe.
- 199 / 199C models must be vented in 3 in pipe.
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
More commissioning tips for boiler
Source: NTI TRX150 manual, p. 36. 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.