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44 Installing the System Piping
3.6.8 Wiring Diagram - Generic Zone
System with Circulators
<NFB-H>
COM
NO
NC
ZONE1
COM
NO
NC
ZONE2
COM
NO
NC
ZONE3
AC24VN
SUPPLY
RETURN
OUTDOOR
DHW TANK
AC24VL
LWCO
R
W
C
R
W
C
R
W
C
R
W
C
COM
A/H
DHW
PRI
NO
NC
N
L
N
L
N
L
Zone1 T/S Zone2 T/S Zone3 T/S Zone4 T/S Zone5 T/S Zone6 T/S
Zone1 Pump Zone2 pump Zone3 Pump Zone4 Pump Zone5 Pump Zone6 Pump
T/T
AC24VN
SUPPLY
RETURN
OUTDOOR
DHW TANK
R
W
C
R
W
C
R
W
C
R
W
C
Generic Zone Controller
<NFB-H>
Boiler Pump
(max. 2.5 A)
COM
NO
NC
ZONE1
COM
NO
NC
ZONE2
COM
NO
NC
ZONE3
AC24VN
SUPPLY
RETURN
OUTDOOR
DHW TANK
AC24VL
LWCO
R
W
C
R
W
C
R
W
C
R
W
C
COM
A/H
DHW
PRI
NO
NC
N
L
N
L
N
L
COM
NO
NC
N
L
N
L
N
L
Pump Ground
3.6.7 Wiring Diagram - Generic Zone
System with Zone Valves
COM
NO
NC
ZONE1
COM
NO
NC
ZONE2
COM
NO
NC
ZONE3
AC24VN
SUPPLY
RETURN
OUTDOOR
DHW TANK
AC24VL
LWCO
R
W
C
R
W
C
R
W
C
R
W
C
COM
A/H
DHW
PRI
NO
NC
N
L
N
L
N
L
Zone1 T/S Zone2 T/S Zone3 T/S Zone4 T/S Zone5 T/S Zone6 T/S
Zone1 Valve Zone2 Valve Zone3 Valve Zone4 Valve Zone5 Valve Zone6 Valve
T/T
AC24VN
SUPPLY
RETURN
OUTDOOR
DHW TANK
R
W
C
R
W
C
R
W
C
R
W
C
Generic Zone Controller
<NFB-H>
<NFB-H>
System Pump
(max. 2.5 A)
Boiler Pump
(max. 2.5 A)
COM
NO
NC
ZONE1
COM
NO
NC
ZONE2
COM
NO
NC
ZONE3
AC24VN
SUPPLY
RETURN
OUTDOOR
DHW TANK
AC24VL
LWCO
R
W
C
R
W
C
R
W
C
R
W
C
COM
A/H
DHW
PRI
NO
NC
N
L
N
L
N
L
COM
NO
NC
N
L
N
L
N
L
Pump Ground
Summary of Contents for NFB-175H
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