Navien Boiler: Set up a cascade (assign sub unit IDs)
Set up a cascade (assign sub unit IDs) on a Navien boiler: The main boiler assigns IDs 1-16 to the sub boilers; only the main unit's settings are used. The Start function is available on NHB-110H/150H only.
Applies to: Navien NHB-H condensing boilers: NHB-150H, NHB-110H, NHB-080H, NHB-055H
How to fix set up a cascade (assign sub unit ids): step by step
- Hold Back and Menu together for 3 seconds on the main unit.
- Open 4. Cascade Status and Settings.
- Choose 1. Cascade System Setting and start it so the main assigns IDs to the subs.
If the unit shows an error code, look it up: Navien Boiler codes
Models
NHB-055HNHB-080HNHB-110HNHB-150H
Source: Navien NHB-H Installation and Operation Manual, 8 Installing a Cascade System p.72-76; 11.13.4 Configuring a Cascade System p.114-115. 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.