Navien NFB-175 Mode D'emploi page 43

3.6.9 Wiring Diagram - Air Handler
<Air Handler>
If you are using the navien manifold system, connect the pump
wires to the system pump. If you are not using the navien manifold
system, connect the pump wires to either the system pump or the
boiler pump.
Boiler Pump System Pump
(max. 2.5 A) (max. 2.5 A)
<NFB>
NC
NO
COM
NC
NO
COM
NC
NO
COM
LWCO
AC24VL
AC24VN
C
W
R
C
W
R
C
W
R
C
W
SUPPLY RETURN OUTDOOR DHW TANK R
SUPPLY RETURN OUTDOOR DHW TANK
<NFB>
NC
NO
COM
NC
NO
COM
NC
NO
COM
LWCO
AC24VL
AC24VN
C
W
R
C
W
R
C
W
R
C
W
SUPPLY RETURN OUTDOOR DHW TANK R
Pump Ground
3.6.10 Wiring Diagram - DHW System with Indirect
Tank
AC24VN
When connecting the Aquastat
C
W
R
C
W
R
C
W
R
C
W
R
Zone1 T/S Zone2 T/S Zone3 T/S Zone4 T/S Zone5 T/S Zone6 T/S
Generic Zone Controller
Zone1 Valve Zone2 Valve Zone3 Valve Zone4 Valve Zone5 Valve Zone6 Valve
<NFB>
AC24VN
C
W
R
C
W
R
NC
NO
COM
NC
NO
C
COM
NC
NO
COM
LWCO W
AC24VL
AC24VN
C
W R
R
C
W
R
C C
W
R
C
W
W
SUPPLY RETURN OUTDOOR DHW TANK R
SUPPLY RETURN OUTDOOR DHW TANK R
T/T <Aquastat>
About the Boiler 43