Navien NFB‑C Series User Manual

38 Installing the System Piping
With 24VAC Connections
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Boiler Pump
Zone Pump 1
Zone Pump 2
Zone Pump 3
Pump Ground
Thermostat 1 Thermostat 2 Thermostat 3
Use with dry
contacts only
Note
Ɣ
If you have a 24 V thermostat, connect it to the R & C terminals on the boiler’s PCB.
Ɣ
The C terminals are for optional connections with 24 V thermostat COMMON.
Ɣ
The rated output of the provided dry contacts are designed to be 5A/120V per each output.

Navien NFB‑C Series Specifications

General

Brand	Navien
Model	NFB‑C Series
Category	Boiler
Language	English