Navien NaviCirc Installation And Operation Manual page 66

Recirculation
Pump
(max. 2.5 A)
Neutral
(N)
Line
(L)
SUPPLY SUPPLY RETURN RETURN OUTDOOR OUTDOOR T/S_ZONE3 T/S_ZONE3 T/S_ZONE
TEMPERATURE SENSOR TEMPERATURE SENSOR R R C R C R
W W W
* Recirculation
Pump
Check Valve
Return Water
City Water
Supply
Expansion Tank
66