4.8 Electrical Diagnostic Point & Wiring Diagram
Fl
am
e r
od
Pum
p
Spa
rk
El
ect
ro
de
Gr
ou
nd
Pow
er
C
od
e
Gr
ou
nd
(GY
)
Neu
tr
al
(W
)
H
ot
(B
K)
Sol
en
oi
d
Val
ve
3-
W
ay
V
al
ve
O
pt
io
na
l
Ex
te
rn
al
P
owe
r W
ire
(1A
, 120W
)
Fu
se
(5
A)
D
ual
V
en
tu
ri
M
ai
n G
as
V
al
ve
AC
24V
, M
ax
8W
, 0
.3A
Ext
er
na
l A
C O
ut
pu
t
Fr
on
t P
an
el
Ai
r P
re
ssu
re
S
en
so
r
W
at
er P
re
ss
ure
Se
ns
or
D
H
W
F
low
S
en
sor
O
pt
io
na
l
O
ut
do
or
T
he
rm
os
ta
t
Hig
h L
im
it S
/W
In
le
t1
Th
er
mi
st
or
Inl
et
2
Th
er
mi
st
or
O
ut
le
t2 T
he
rm
ist
or
O
ut
le
t1
T
he
rmi
st
or
Ex
ha
ust
T
he
rm
ist
or
Col
or
C
od
e
: Bl
ue
: O
ra
ng
e
: R
ed
: Wh
ite
: Y
ello
w
: Bl
ac
k
: Br
ow
n
: G
ree
n/
Yel
lo
w
: P
ur
pl
e
If an
y o
f t
he o
rig
in
al
w
ires
as
su
ppl
ie
d t
he
bo
ile
r m
us
t be
rep
lac
ed
, t
hey
m
us
t b
e r
ep
la
ce
d
th
ei
r eq
ui
val
en
t.
A
B
C
D
E
N
M
L
K
J
I
H
G
O
F
Extern.
power
Содержание NCB-180
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