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3-5 Wiring Diagram
GAS VALVE
GAS VALVE 3
GAS VALVE 2
GAS VALVE 1
GAS VALVE
THERMAL FUSE
TEMPERATURE SENSOR
WATER FLOW CONTROL VALVE
TEMPERATURE SENSOR
TEMPERATURE SENSOR
FLAME ROD
WATER FLOW SENSOR
THERMOSTAT
IGNITOR
FAN MOTOR
(CONTROL)
(OVER HEAT)
Y
Y
Y
Y
(MAIN)
Y
Y
Y
DIP SWITCH 1
DIP SWITCH 2
ON
5
7
6
1
4
2
1
2
8
3
OFF
ON
OFF
ANTI-FROST HEATERS
AC240V
PCB
PCB
MODEL NAME
PCB NO.
FUSE
(
250V T5A)
2
3
4
6
1
Y
Y
REMOTE
CONTROLLER
BL
G
O
Y
BK
BK
BK
BK
(AMBIENT TEMP.)
BL
BK
P
W
O
G
R
Y
W
W
W
BL
BL
W
W
W
W
(OUTGOING TEMP.)
(INCOMING TEMP.)
BK
GR
GR
R
W
BK
BK
R
Y
W
BL
GAS VOLUME ADJUSTING BUTTON(DOWN)
GAS VOLUME ADJUSTING BUTTON (UP)
COMBUSTION INDICATOR
BK
BK
: White
: Black
: Brown
: Blue
: Grey
: Light Blue
: Orange
: Red
: Green
: Purple
: Yellow
10
8
9
W
BK
BR
BL
GR
LB
O
R
G
P
Y
ONLY FOR 26NG50-6/26LP50-6
26NG60-6/26LP60-6
ONLY FOR 26NG50-6/26LP50-6
26NG60-6/26LP60-6
16NG50-6/16LP50-6
16NG60-6/16LP60-6
GC-153
20NG50-6/20LP50-6
20NG60-6/20LP60-6
GC-162
26NG50-6/26LP50-6
26NG60-6/26LP60-6
5
W
W
G
LB
BR
G/Y