NTI Boiler: Do not adjust excess flow valve screws without analyzer
Do not adjust excess flow valve screws without analyzer on a NTI boiler: Screws 2 (offset) and 4 (throttle) on the gas valve must not be removed or adjusted without a calibrated combustion analyzer. Doing so can cause fire, property damage or serious injury.
Applies to: NTI TRX150 gas valve
How to fix do not adjust excess flow valve screws without analyzer: step by step
- Leave the EFV offset and throttle screws alone unless a calibrated combustion analyzer is connected.
If the unit shows an error code, look it up: NTI Boiler codes
Models
TRX085TRX110CTRX150TRX199TRX199C
Source: NTI TRX150 manual, p. 55. 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.