Navien NHB Series Installation & Operation Manual page 42

3.6.6 Wiring Diagram - Generic Zone System with
Circulators
Zone1 T/S Zone2 T/S Zone3 T/S
Generic Zone Controller
Zone1 Pump Zone2 Pump Zone3 Pump
Boiler Pump
(max 5A)
System Pump
(max 5A)
42 About the Boiler
<NFB>
Zone4 T/S Zone5 T/S Zone6 T/S
Zone4 Pump Zone5 Pump Zone6 Pump T/T
<NFB>
Pump Ground
3.6.7 Wiring Diagram - Air Handler
Thermostat
<Air Handler>
Boiler
Pump
(max 5A)
<NFB>
<NFB>
System
Pump
(max 5A)
Pump Ground