Appendices 67
12.3 Wiring Diagram
2
1
CN 1
CN 6
OT
R/ C
M
LIN
E
N
EU
TR
A
L
P.E
WPS
Flame
Detector
Ignitor
GAS
Valve
Dual
Ventury
(NCB 700)
BURNER
3WAY -Valve
PUMP
OU
TL
ET
2_
Te
m
p
Outdoor Sensor
AWS
8 6 4 2
7 5 3 1
CN 5
BLDC FAN
EX
H
AU
ST
_T
em
p
High water
pressure S/W
Low water
pressure S/W
RE
TU
RN
_T
em
p
SU
PP
LY
_T
em
p
Dip s/w
(8pin)
Dip s/w
(4pin)
EXT. Contact
M
7
6
5
4
3
2
1
8
MIX V/V
CN 10
OU
TL
ET
_T
em
p
5
4
3
6
2
CN 12
M
HTL
APS
IN
LE
T_
Te
m
p
2 3 4
CN 8
1
CN 2
M
7
6
5
4
3
2
1
8
WAV V/V
CN 11
P.E
1
2 3 4
1
6 7 8
5
1
0
1
1
1
2
9
1
4
1
3
Flow
Sensor
1
DHW_INPUT
2 3 4
CN 15
1
5
Recirculation
Pump(NCB 700)
ADOPTOR
Re.Pump . Temp
Sensor (NCB 700)
5
6
7
8
9
10
11
4
CN 9
1
2
3
PA
N
N
EL
7
6
5
4
3
2
1
8
PIN 1
P
C
5 4 4
CN 14
6
2 1
3
7
2
1
CN 13
C
H
_I
N
P
U
T_
LI
V
E
5
6
7
4
1
2
3
CN 4
5
6
4
1
2
3
CN 4
CN 7
2 3 4
1
6 7 8
5
1
0
1
1
1
2
9
Summary of Contents for NCB700-42C
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