Navien NR-180, Installation Manual

Page: 60 / 78

Gas Water Heater Installation
60
█
Wiring Diagram:
NP
If any of the original wires as supplied with the heater must be replaced, they must be
replaced with their equivalent.
W
IRING
DIAGRAM
A
C
15
0V
A
C
12
0V
R
W
BK
B
G
R
/Y
G
ND
M
GV
S
o
l
e
noid
V
al
ve
1
BR
A
C
12
0V
F
us
e
(5
A)
C
N2
C
N
15
C
N
10
C
N1
BK
R BK W Y Y R R
BK BK
B B W W
BR BR
PV
A
PS
BK BK
R W
BK
Water Adjust
me
nt
V
al
ve
F
e
e
d
back
F
lo
w
Se
ns
or
R
W
BK
BK
W R
Water Leakag
e
De
te
ct
or
B
C
N
17
C
N
18
C
N
19
FM
R
BK
Y
W
O
B
B
B
BK
W
Y
Y
W
M
O
P
Y
B
BK
W
R
M
i
x
i
n
g
Valve
B
A
ir
P
re
ss
ur
e
Se
ns
or
M
M
o
d
u
l
ating
G
as
V
al
ve
C
N8
C
N
20
C
N
23
C
N
24
C
N3
BK W
N
e
u
t
r
al(W)
H
ot
(B
K)
G
r
o
und
G
PS
G
as
P
re
ss
ur
e
Se
ns
or
C
N
11
C
N5
C
N6
C
N
22
C
N
14
C
N
13
C
N7
O
O
W
BK
C
N
12
C
N9
R
e
m
ote
C
o
n
t
r
oller
C
as
ca
de
ON
ON
1
2
3
4
5
6
1
2
3
4
5
6
7
8
M
in
M
ax
Modulati
ng
G
as
V
al
ve
A
dj
us
ti
ng
D
ip
S
/W
1
D
ip
S
/W
2
D
ip
S
/W
6
F
ND
1
BR
S
V1
Y
Y
S
o
l
e
noid
V
al
ve
2
S
V2
R
R
M
2
-W
ay
V
al
ve
R
B
BK
S
W4
(
Se
rv
ic
e
us
e)
S
W3
S
pa
rk
E
le
ct
ro
de
F
la
me
r
od
B
P
ow
er
S
/W
W
W
W
BK
W
A
nt
i-
Fr
os
t
He
at
er
2
n
d
H
/E
(R
)
1
n
d
H
/E
(1
)
1
n
d
H
/E
(2
)
2
n
d
H
/E
(L
)
B
/
P
Pi
pe
H
/
E
Pi
pe
H
/
W
Pi
pe
C
/
W
Pi
pe
W W
(
No
t
us
e)
G
ND
G
R
/Y
P
o
w
e
r
Code
1
2 4
3
A
C
26V
A
C
9V
A
C
19V
1
2 4
3
B
Mixing Valve
Tr
an
sf
or
me
r
A
C
12
0V
A
C
17V
O
W
Y
BK
R
BK
BK
High Lim
it
S
/W
Exhaust High
L
im
it
S
/W
T
h
e
r
m
a
l Fuse
M
ix
in
g
Th
er
mi
st
or
C/W Ther
mi
st
or
H/E Ther
mi
st
or
H/W Ther
mi
st
or
C
o
l
o
r
Code
B O P R W Y BK BR G
R
/Y
:
B
lue
:
O
r
ange
:
P
ink
:
R
ed
:
W
hi
te
:
Y
e
llow
:
B
la
ck
:
B
ro
wn
: Green/
Ye
ll
ow
S
V1
S
V2
Y
Y
M
a
n
i
fold
R
R
M
G
V1
BR
BR
M
G
V2
BR
BR
PV
BK BK
Solenoid
V
al
ve
C
on
ne
ct
in
g
Wi
ri
ng
C
ol
or
A
B C D E F G
H
I
J
K
L
M
N O P R
S
Q T
Y Y R R
BK BK B B
R B
BK
W
AV
(
M
a
in)
O
P
Y
B
BK
W
R
R
A
C
26V
A
C
9V
A
C
19V
(
M
a
in)
"
A"
W
"
A"
B B O Y B
M
W
at
er
A
d
j
u
s
tment
V
al
ve
IG
W
AV
ON O
FF
Main Gas
V
al
ve
T
ra
ns
fo
rm
er
T
ra
ns
fo
rm
er
F
an
M
ot
or
Freeze Pro
te
ct
S
/W
Main Gas
V
al
ve