Navien CH-180 Installation Manual - Wiring Diagram:
Wiring Diagram:
If any of the original wire as supplied with the combination Water Heater / Heating Boiler must be
replaced, it must be replaced with its equivalent.
CH
AC 150V
AC 120V
R
W
BK
BK
GR/Y
GND
MGV
Solenoid
Valve 1
BR
AC 120V
Fuse (5A)
CN2
CN16
CN1
BK
R
BK
W
R
R
B
B
BK
BK
W
W
W
W
BR
BR
PV
APS
BK
BK
R
BK
Water Pressure Sensor
Flow Sensor
R
W
BK
BK
W
R
CN17
CN19
FM
R
BK
Y
W
O
B
B
Y
Y
W
Air Pressure Sensor
Modulating
Gas Valve
CN8
CN20
CN3
BK
W
Neutral(W)
Hot(BK)
Ground
GPS
Gas Pressure Sensor
CN5
CN6
CN22
CN14
CN13
CN7
OO
WB
K
CN12
CN9
Remote
Controller
Cascade
ON
ON
12
3456
1234
5
6
7
8
Min
Max
Modulating Gas
Valve Adjusting
Dip S/W 1
Dip S/W 2
Dip S/W 7
FND 1
BR
SV1
YY
Solenoid
Valve 2
SV2
RR
M
3-Way Valve
SW4
(Service use)
SW3
Spark
Electrode
Flame rod
BK
Power S/W
W
BK
W
GND
GR/Y
Power Code
1
2
43
AC 26V
AC 9V
AC 19V
OW
Y
BK
R
BK
BK
High Limit S/W
Exhaust High Limit S/W
Thermal Fuse
S/H Return Thermostat
DHW Outlet Thermostat
Color Code
B
O
P
R
W
Y
BK
BR
GR/Y
: Blue
: Orange
: Pink
: Red
: White
: Yellow
: Black
: Brown
: Green/Yellow
SV1
SV2
YY
Manifold
RR
MGV1
BR
BR
MGV2
BR
BR
PV
BK
BK
Solenoid Valve
Connecting Wiring Color
A
B
F
C
D
E
H
I
J
L
K
T
P
Q
M
R
R
BK
BK
B
B
B
BK
WPS
(Main)
R
AC 26V
AC 9V
AC 19V
(Main)
"A"
W
"A"
B
B
IG
ON
OFF
Main Gas Valve
Transformer
Transformer
Fan Motor
Main Gas Valve
BK
DHW Inlet Thermostat
S/H Supply Thermostat
B
B
CN11
Outdoor Thermostat
G
AC24V
Output
A/H
Cooling
Heating
A/H
Heating
T/S
Cooling
T/S
R
S
CN25
CN4
CN23
CN10
CN24
B
B
B
BK
CN26
Power
Output
External
CN21
O
CN18
N
Feeder
Valve
Auto
B
B
Pump
W
Y
ON
OFF
AC24V Switch
R
R
66
WIRING DIAGRAM