Navien NHB H Series Installation And Operation Manual page 36

With 24VAC Connections
(250V 3.15A)
CNC1 CNC4 CNC5
ZONE2 ZONE1
ZONE3
Thermostat 3 Thermostat 2
36 Installing the System Piping
CNC3 CNV3
CNC6
DHW
LWCO ZONE3
Thermostat 1 Pump Ground
CNB1
CON1 CON2
L
ZONE3 Pump FUSE
(250VAC_10A)
ZONE2 Pump FUSE
(250VAC_10A)
CNV2 CNV1
ZONE2 ZONE1
CNG1
CNP1
ZONE1 Pump FUSE
(250VAC_10A)
CNC2
Boiler Pump FUSE
(250VAC_10A)
CNP2
N
Live
Neutral
OUT
Zone Pump 3
IN (max. 2.5 A)
OUT
Live
IN
Neutral
OUT
Zone Pump 2
(max. 2.5 A)
IN
CNF1
Live
Neutral
Zone Pump 1
(max. 2.5 A)
OUT
Live
IN
Neutral
Boiler Pump
(max. 2.5 A)
OUT