Navien NaviCirc - Page 74

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2.5.3.2 Wiring Diagram - External LWCO
T/S_ZONE3
W
C
T/S_ZONE2
R
W
C
T/S_ZONE1
R
W
C
AC24VN
AC24VL
lLWCO
R
W
C
T/S_Recir
COM NO NC
ZONE_V/V3
COM NO NC
ZONE_V/V2
COM NO NC
ZONE_V/V1
Neutral
Live
Live
LWCO
LWCO
Note
The boiler supplies 24 VAC at the LWCO power terminals
(CNC3).