User manual

34
WIRING DIAGRAM
THERMAL FUSE
THERMISTOR
〔OUTGOING WATER
TEMP.〕
〔HEAT EXCHANGER
TEMP.〕
THERMISTOR
DIP SWITCH
Gas type
Temperature control
WATER FLOW
SENSOR
COLOR CODING
W ：White
Bk :Black
Br :Brown
R :Red
B :Blue
Y :Yellow
P :Pink
Or :Orange
Gr :Green
Gy :Grey
DIP SWITCH
HIGH SETTING POT
SOLENOID VALVE 3
SOLENOID VALVE 2
SOLENOID VALVE 1
MAIN SOLENOID VALVE
SPARK
ELECTRODE
SURGE
PROTECTOR
SPARK
GENERATOR
MC-70-2A OR MC-91-1A
BC-70-2A OR MC-91-1A
F
1
E1
E3
H1
F3
A1
A
B
B
1
B2
C1
A2
J1
J2
J4
J3
J5
C
D
J
I
GND
GND
FUSE
〔3A〕
ANTI-FROST HEATER
ANTI-FROST HEATER
FROST SENSING
SWITCH
GND
F
2
POV
R
R
W
W
P
W
E2
E
G
F
H
W
W
Bk
Y
R
Bk
Y
R
W
R
Bk
Bk
Y
Y
Y
Gy
Br
Br
Or
Y
R
W
R
Bk
Y
W
Gr
Gr
R
R
R
R
Or
Or
Y
Or
R


Bk
P


Gy

Bk
W
Bk
Y

Bk
Or

Bk
R

Bk
P
Or
Or
R
R
Gr/Y
Gr/Y
Gr/Y
Or
Or
R
Bk
W
Y
W
Br
R
Or
Y
R
B
Br
Or
Y
Gy
R
B
Gy
Y
Br
Or
Or
Or
R R
R W R Y Bk
BB
P
R
R
OVERHEAT
SWITCH
MODULATING
VALVE
STEPPING
MOTOR
GEARED
MOTOR
FAN MOTOR
TRANSFOMER
TRANSFOMER
FLAME ROD
SV3
SV2
SV1
SV0
I4
I3
I2
I1
J6
J8
J7
O
F
F
1 
2
3
4
5
6
｝
｝
O
F
F
1 
2
3
Gy
Bk
W W
BBr
BBr
YY YY YY
BB
BBr
AC230V
Y
Y
Y
Y
Y
Y
MAX
MIX