Electrical Requirements & Wiring Diagram - A.O. Smith BPD-80 Series Installation And Operating Manual

ELECTRICAL REQUIREMENTS & WIRING DIAGRAM
WARNING
Electric Shock Hazard
Disconnect power before
servicing.
Replace all parts and panels
before operating.
Failure to do so can result in
death or electrical shock.
Before plugging in the water heater, always make sure:
•
The voltage and frequency correspond to that specified
on the water heater wiring diagram.
•
The electrical outlet has the proper overload fuse or
breaker protection.
1. The unit must be connected to a 120VAC power
supply. A dedicated circuit is preferred. Do not use a
GFI outlet.
2. The water heater must be properly grounded.
3. This water heater is a polarity sensitive appliance and
will not operate if the power supply polarity is reversed.
Note: Always reference the wiring diagram for the correct
electrical connections.
After making all electrical connections, completely fill the
tank with water and check all connections for leaks. Open
the nearest hot-water faucet and let it run for 3 minutes to
purge the water lines of air and sediment and to ensure
complete filling of the tank. The electrical power may then
be turned on. Verify proper operation after servicing. See
also "Installation Checklist".
3 1
4 2 YELLOW
YELLOW
1 WHITE
2 WHITE
3
4 WHITE WHITE-BLUE
WHITE
4 1
5 2
3 BLUE
6
BLACK
GREEN
HONEYWELL
GAS VALVE
Figure 10.
100299634_2000545244_ Rev. A
IF WIRING HAS TO BE REPLACED IN THE FIELD, USE ONLY TYPE TEW 105°C WIRE.
IGNITER - FLAME ROD
ASSEMBLY
CAUTION:
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN
SERVICING CONTROLS. WIRING ERRORS CAN
CAUSE IMPROPER AND DANGEROUS OPERATION.
VERIFY PROPER OPERATION AFTER SERVICING.
POWER VENT WIRING SCHEMATIC.
NOTE: REFER TO THE "Installation Checklist" BEFORE
OPERATING THIS HEATER.
6 3
5 2
P1
4 1
4
3
P2
2
1
4 2
P3
3 1
Circled numbers indicate
P4
sequence of operation.
Figure 11.
ELECTRICAL RATING 120V, 5A, 60HZ.
PRESSURE
SWITCH
(NO)
BLUE BLUE
BLUE
P J
1 1
2 2
3
3
4 4
5 5
WHITE - NEUTRAL
6 6
BLACK - LINE
GREEN - GND
JUNCTION BOX
1 N
1 L1
EARTH GND
CAPACITOR
3 BLOWER
6 FLAME SENSOR
5 HOT SURFACE IGNITER
4 PRESSURE SWITCH (CLOSED)
2 PRESSURE SWITCH (OPEN)
4 PRESSURE SWITCH (CLOSED)
4 HIGH LIMIT SWITCH (CLOSED)
PRESSURE
SWITCH
(NC)
HIGH LIMIT SWITCH
BLUE
BLUE
BROWN
CAPACITOR
BROWN
WHITE
YELLOW
YELLOW-GREEN
BLOWER
120VAC/60HZ
WALL PLUG
13