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WIRING DIAGRAM (MODEL : N-063/N-042)
<N-063 Model Only>
(GND)
LS
(Fully open)
1
BL
(Vcc)
2
Y
WATER FLOW
(Vcc)
6
W
CONTROL DEVICE
O
4
SM
5
G
8
BK
7
V
3
R
4 3
2
<CN210>
BK
BL
R V
G O W Y
8
7
6
5 4
3
2
1
<CN86>
FLAME ROD
MAIN CIRCUIT
BOARD
<CN78>
BL
1
BL
BL
1
BL
<CN59>
THERMAL FUSE
1
2
3
4
5
6
7
8
<CN27>
R
Y
W
W
BL
BL
1
BL
BL
BL
BL
1
R
3
PLS
Y
Y
WATER FLOW
QS
Vcc
R
2
R
GND
BL
1
BL/W
SENSOR
W
1
W
WATER INLET
2
W
W
THERMISTOR
3
WATER OUTLET
W
1
W
W
2
W
THERMISTOR
Vcc
GND
FAN MOTOR
FM
FG
Vs
COLOR CODING
TRANSFORMER
W : White
BL : Blue
R : Red
GY : Gray
BK : Black
G : Green
V : Violet
BR : Brown
O : Orange
Y : Yellow
BK
1
BK
W
<AC120V>
W
2
W
BL
HOT
FROST SENSING
SWITCH
VARISTOR
RELAY 2
RELAY 4
RELAY 3
DC90V
RELAY 1
DC140V
POWER
CONTROLLER
DC15V(2)
A
PRIMARY
SECONDARY
DC15V(1)
15V POWER CIRCUIT
WATER FLOW SENSOR
(N-063 ONLY)
WATER FLOW SERVO
THERMAL FUSE
RELAY 1
RELAY 2
RELAY 3
DU
RELAY 4
GAS PROPORTION VALVE
POWER CONTROL CIRCUIT
FLAME DETECTING CIRCUIT
FR
FLAME ROD
GND
52
W
10
BL
BK
11
BL
BL
12
GY
R(+)
50
BL(-)
1
<CN89A>
1
BL
<CN75>
2
R
BL/R
3
BL
BL/R
R
<CN89B>
R
R
BK
Secondary Gas Pressure Adjustment Button(UP)
BL
R
1
3
5
Secondary Gas Pressure Adjustment Button(DOWN)
<CN10>
2
3
4
2
4
6
Y
W
BL
Push Button(Low Capacity)
BL
BR
GY
Push Button(High Capacity)
<CN1>
1 2 3
4
5
6
W
W W
G
W
BK
46
I G
BK
W
1
W
W
2
W
W
W
<CN92B>
W
W
<CN92A>
W
1
W
GY
2
W
CURRENT
W
W
1
LEAKAGE
GY
2
W
SAFETY DEVICE
W
1
W
GY
2
W
1
W
BK
2
BL
W
3
G
GROUND
NEUTRAL
AC120V
PRIMARY
SECONDARY
AC100V
10A(FUSE)
ANTI-FROST HEATER
ARRESTER
VARISTOR
IGNITER
IG
SOLENOID VALVE 0
HIGH LIMIT
GND
SV0
SWITCH
SOLENOID VALVE 1
SV1
DC90V
SOLENOID VALVE 2
SV2
DC140V
FAN
COMBUTION FAN
B
C
A
B
INPUT AND
FAN
OUTPUT PULSE
PULSE
C
CONTROL
CIRCUIT
WATER OUTLET THERMISTOR
CPU
CENTRAL
WATER INLET THERMISTOR
PROCESSIN
RELAY
G UNIT
DRIVING
CIRCUIT
5V POWER CIRCUIT
SV0
SV1
GAS VALVE UNIT
SV2
DU
Remote Controller RC-7646M
<N-063 Model Only>
REMOTE CONTROLLER
BL
BL
RC-7646M
<N-042 Model Only>
Installation Guide
REMOTE CONTROLLER
1
BL
2
BL
RC-7646M
1
2
3
GROUND
Note
ELECTRODE
Do not insert the power plug of the water heater into the outlet until the installation of the remote
HIGH-LIMIT SWITCH
controller is completed.
FROST SENSING
SWITCH
Supplied Parts List
ANTI-FROST HEATER
Part Name
Remote controller
Wall packing
Phillips roundhead wood screw
Wall plug
Do not disassemble the remote controller.
Notes on the place of installation
The remote controller can be installed at a
convenient place in the bathroom, because
it is waterproofed and of a low-voltage de-
sign, but should avoid the place where wa-
ter may splash on the controller.
Avoid the place where special chemical
agents (e.g., benzine, fatty and oily deter-
gents) are used.
Avoid outdoor installation, and an indoor
place where the remote controller is ex-
posed in direct sunlight.
Request to Constructors
Read this installation guide
carefully before carrying out
the construction specified.
NORITZ AMERICA CORPORATION
Wall packing
Connecting electric cord
Quantity
1
1
2
2
Remote controller
Confirmation of remote controller cord
2P connector
Remote controller side
Y-shaped terminal
Water heater side
(two-core)
Confirm the connection with the labels at the
both ends of the remote controller cord.
The following remote controller cords are
provided for the selection of a necessary
length of cord according to the installation
condition:
3A (3m), 5A (5m), 8A (8m), 10A (10m),
15A (15m), 20A (20m), 50A (50m)
Phillips roundhead
wood screw
Wall plug
53
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