Navien NCB-150E User Manual

70 Appendixes
11.2 Wiring Diagram
Color Code
B O R W Y BK BR GY
: Blue : Orange : Red : White : Yellow : Black : Brown : Green/Yellow
If any of the original wires as supplied the boiler must be replaced, they must be replaced their equivalent.
FM
Fan Motor
YBKR
O
W
CN8
CN18
Pump
Y
W
CN17
IG
Spark
Electrode
Flame rod
BR B BK
BK
Neutral(W)
Hot(BK)
Ground (GY)
GY
Power Code
W
Fuse (5A)
GY
Ground
CON1
BK BK
Front Panel
BK BKBKBKBK BKBK BKBK BK
CN13
B B
Inlet1 Thermistor
B B
B B
Outlet2 Thermistor
B B
B B
Inlet2 Thermistor
B B
B B
Outlet1 Thermistor
B B
B B
Exhaust Thermistor
B B
BK BK
High Limit S/W
CN1
BK R B
Valve
Solenoid
Optional
External Power Wire (1.5A, 180W)
CN26
CN14
CN19
GY
3-Way Valve
M
CN15
Dual Venturi
BR W B
MGV
Main Gas Valve
WY R
CN16
CN23 CN10 CN24 CN25
CN21
P : Purple
P
P
AC24V, Max 8W, 0.3A External AC Output
LWCO
T/TA/H
CN11
B
Optional
Outdoor Thermostat
B
CN5
DHW Flow Sensor
R
W
BK
CN22
Water Pressure
R
GY
BK
Sensor
WPS
CN6
APS
R
W
BK
Air Pressure Sensor
Auto Feeder
(Make-up Water)
A
B
C
D
E
F
GH I
J
K
L
M
N
S

Navien NCB-150E Specifications

General

Brand	Navien
Model	NCB-150E
Category	Boiler
Language	English