NTI Boiler: Zone valve wiring for valve-based systems
Zone valve wiring for valve-based systems on a NTI boiler: In a valve-based system each zone valve opens on a call for heat, and its contacts signal the boiler to fire.
Applies to: Valve-based heating zones
How to fix zone valve wiring for valve-based systems: step by step
- Wire each zone thermostat to its own zone valve.
- Make sure the zone valve end switch contacts are wired to the boiler call-for-heat input.
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. 32. 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.