Rheem Direct Vent Gas Tankless Water Heater, Use And Care Manual, Page: 21 / 36

Electrical Connection
POWER CORD:
●
The electric power supply requirement
for this water heater is 120 VAC/60HZ,
2 Amps.
●
The water heater comes with a three (3) pin
power supply cord. Use only a power outlet
with a ground terminal.
●
The installation of an electric leakage
breaker is recommended.
●
Keep any excess of the power supply cord
on the outside of the water heater.
●
If local codes require hardwiring, see
instructions for “Hardwiring the Electrical
Connections”.
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 enclosure
for a 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.
BK
8
R GR Y B O W BR
WATER
FLOW
SENSOR
OVER HEAT
LIMITER
BK
GND
GND
THE CONNECTORS OF DUAL AND MULTIPLE
LED
CONTROL
BATH BATH
CONTROL1 CONTROL2
ARE INTERAPPLICABLE TO THE BODY
CONNECTORS EACH OTHER.(RED)
FLAME ROD1
FLAME ROD2
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)
WIRING DIAGRAM
FUSE(3A)
CIRCUIT
BOARD
W
B
R
O
Y
FUSE
(5A)
U
2
1
S
1
3
2
R
GR
Y
B
O
W
R1
BR
R2
R3 R4
GY
GY
W
Y
R
R
R
BR
W
W
R
W
BK
BK
BK
BK
BK
BK BK
BK
W
BK
IGNITER
ELECTRODE
1
2
3
4
5
6
7
8
1 2 3 4
R
1
2
3
4
5
6
1
2
3
4
5
6
7
OFF
ON
1 2 3 4
I
H
F
D E
PSV
M
L
- +
K
G
CONTROL MOTOR
WATER VOLUME
LIMITER MOTOR
SW2 SW1
SW3
G/Y
W
AC
120V
1 4
5
6 3
2
3 6
5 2
1 4
IG
B
DIP SWITCH
ADJUSTER
BUTTON
MIN
BUTTON
MAX
BUTTON
MAIN
VA
L
V
E
W W
W
W
W
W
W
ANTI-FROST
HEATER
(RED)
(RED)
FOR INDOOR,
DIRECT-VENT
MODEL ONLY
CONNECTOR FOR CHECKING
THERMOELECTROMOTIVE FORCE
1
2
1
2
Q
P
TH
ER
M
O
C
O
U
P
L
E
R W
FOR INDOOR,
DIRECT-VENT
MODEL ONLY
GR
GR
WV
WATER BY-PASS
SOLENOID VALVE
USUALLY
DISCON-
NECTED
B
A
USUALLY
DISCONNECTED
31-80469 0
SV2 SV1 SV0
Y
W
R
BK
BK
G/Y
BK
BK
W
W
W
W
J
FM
5
W
Y
B
R
BK
FAN
MOTOR
FOR
DIRECT-VENT
MODEL ONLY
W W
BK BK
FOR
DIRECT-VENT
MODEL ONLY
THERMISTOR AIR AMBIENT
VA
LVE 0
SOLENOID GAS INLET VA
LVE 1
SOLENOID VA
LVE 2
SOLENOID
RESISTOR
THERMISTOR INLET W
A
TER
THERMISTOR EXCHANGER HEA
T
THERMISTOR HOT W
ATER
OUTLET