HVACopediaNTI · Boiler · Standby/shutdown
Normal shutdown
What happens, in order
- Turn the boiler off at the ON/OFF power switch.
- Wait for the combustion blower to stop so latent combustion gases are purged.
Timings and thresholds
| Item | Value |
|---|---|
| Combustion blower run-down after power off | maximum 5 minutes |
Applies to: TRX150
More NTI boiler sequences
- Combustion checking procedure · Startup
- Power-on and mode sequence · Startup
- Power-up and what lets the boiler start a call · Startup
- Failed ignition and lockout · Ignition
- First ignition start-up · Ignition
- Light-off sequence and retries · Ignition
- Central heat call (CH1) from call to satisfied · Heating
- Indirect tank (DHW) call · Domestic hot water
Related
Take it to the job
Sequences of operation, error codes and tips work offline in the HVACopedia app.
Source: NTI TRX150 manual, p. 97. Written in our own words; timings can differ by model and software version, so check the manual for your exact unit.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.