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15
Electrical Connection
HARDWIRING THE ELECTRICAL
CONNECTIONS:
● Wiring should be carried out by a
qualified electrician in accordance with
local codes.
● The water heater requires 120 VAC/60Hz
and should be properly grounded.
● DO NOT connect grounding wire to
water pipes, gas pipes, telephone
cables, lightning conductor circuits and
to grounding circuit of other equipment
that carry a ground-fault interrupter.
● An ON/OFF switch must be provided
and installed for the incoming
120VAC power.
● Wire the water heater exactly as shown
below. A wiring diagram is also found
inside of the cover panel.
● A green screw is provided in the
junction box for grounding connection.
● Connect the live wire to black leg wire
and the neutral wire to the white neutral
wire.
WARNING: Shock
hazard line voltage is
present. Before servicing
the water heater, turn off
the electrical power to the
water heater at the main
disconnect or circuit
breaker. Failure to do so
could result in severe
personal injury or death.
CAUTION: Label all
wires prior to
disconnection when
servicing controls. Wiring
errors can cause improper
and dangerous operation.
Verify correct operation
after servicing.
B
8
RGRY B O
W
BR
AIR
INTAKE
FILTER
SWITCH
TRANSFORMER
GND
BK
GND
WAT E R
FLOW
SENSOR
OVER HEAT
LIMITER
BK:BLACK
COLOUR CODE
BR:BROWN
R:RED
W:WHITE
B:BLUE
GY:GRAY
GR:GREEN
O:ORANGE
Y:YELLOW
G/Y:GREEN/YELLOW
REMOTE
REMOTE
REMOTE
(UMC-117)
(USC1-117)
(USC2-117)
FAN
MOTOR
FM
5
WIRING DIAGRAM
FUSE(3A)
CIRCUIT
BOARD
SV3 SV2
SV1
SV0
W
B
R
O
Y
W
W
CONNECTOR FOR CHECKING
THERMOELECTROMOTIVE FORCE
FUSE
(5A)
2
1
U
2
1
O
S
1
3
2
B
R
GR
Y
B
O
W
R1
BR
R2
R3R4
GR
GR
GY
GY
W
Y
R
R
R
BR
BY
W
R
W
W
R
W
BK
BK
BK
BK
BK
BK
BK
BK
BK
BK BK
BK
BK
W
BK
IGNITER
ELECTRODE
W
1
2
3
4
5
6
7
1
2
1
2
8
1234
Q
P
R
1
2
3
4
5
6
1
2
3
4
5
6
7
OFF
ON
1
2
3
4
I
J
H
F
DE
B
A
PSV
M
L
-
+
K
G
T
CONTROL MOTOR
WATER VOLUME
LIMITER
MOTOR
SW2
SW1
SW3
R
R
G/Y
BK
W
AC
100V
G/Y
W
AC
120V
FOR INDOOR
MODEL ONLY
1
4
5
63
2
3
6
5
2
1
4
IG
WV
B
DIP SWITCH
ADJUSTER
BUTTON
MIN
BUTTON
MAX
BUTTON
MAIN
WATER BY-PASS
SOLENOID VALVE
V
A
L
V
E
3
S
O
L
E
N
O
I
D
V
A
L
V
E
2
S
O
L
E
N
O
I
D
V
A
L
V
E
1
S
O
L
E
N
O
I
D
V
A
L
V
E
0
S
O
L
E
N
O
I
D
G
A
S
I
N
L
E
T
T
H
E
R
M
I
S
T
O
R
A
I
R
A
M
B
I
E
N
T
T
H
E
R
M
I
S
T
O
R
I
N
L
E
T
W
A
T
E
R
T
H
E
R
M
I
S
T
O
R
E
X
C
H
A
N
G
E
R
H
E
A
T
T
H
E
R
M
I
S
T
O
R
H
O
T
W
A
T
E
R
O
U
T
L
E
T
V
A
L
V
E
FROST
PROTECTION
THERMOSTAT
WW
W
W
W
BK
BK
BK
BK
BK
WW
W
W
W
BK
FOR INDOOR
MODEL ONLY
ANTI-FROST
HEATER
T
H
E
R
M
O
C
O
U
P
L
E
(BLUE)
(RED)
(RED)
R
W
CONTROL
BATH
BATH
CONTROL1
CONTROL2
LED
FLAME ROD1
FLAME ROD2
FLAME ROD3
THE CONNECTORS OF DUAL AND MULTIPLE
ARE INTERAPPLICABLE TO THE BODY
CONNECTORS EACH OTHER.(RED)
WARNING: Field wiring connections and electrical grounding must comply with local
codes, or in the absence of local codes, with the latest edition of the National Electrical Code,
ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CSA C22.1 Part 1.