NTI Boiler: Prepare the boiler before replacing components
Prepare the boiler before replacing components on a NTI boiler: Before you replace any component on the TRX150, isolate everything: electrical, gas and water. Confirm each one is actually off rather than assuming. Water must not get into the display or control panel, since moisture on the board causes shorts and ruined controls.
Applies to: TRX150
Common causes of prepare the boiler before replacing components
- Power still live at the boiler after only pressing ON/OFF
- Gas or water valves not fully closed
- Water dripping onto the display or control panel while draining
How to fix prepare the boiler before replacing components: step by step
- Press ON/OFF to turn the boiler off, then switch main power off at the circuit breaker.
- Check the boiler electrical connections are tight.
- Remove the front cover.
- Close the main gas shutoff valve.
- Close all water valves (supply, return, inlet and outlet).
- Drain the boiler or circuit if needed.
- Keep water away from the display and control panel, and cover them if you must open a drain above them.
If the unit shows an error code, look it up: NTI Boiler codes
Source: NTI TRX150 manual, p. 98. 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.