Electrical Connection And Ladder Diagram - L.B. White AW250 Owner's Manual And Instructions

Electrical Connection and Ladder Diagram

Always refer to the heater's electrical connection diagram when servicing to avoid wiring errors and heater malfunction.
TRANSFORMER
GROUND
L1
NEUTRAL
NEUTRAL
GROUND
IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE HEATER MUST BE REPLACED,
IT MUST BE REPLACED WITH WIRING HAVING A TEMPERATURE RATING OF AT LEAST 302
14
Check for proper operation after servicing.
WARNING: THIS HEATER MAY START AT ANY TIME
L.E.D. INDICATOR
HSI CONTROL
ELECTRICAL CONNECTION DIAGRAM
* THERMOSTAT
AIR PROVING
ELECTRICAL LADDER DIAGRAM
CAUTION
HIGH LIMIT
SWITCH(ES)
FAN
MOTOR
AIR PROVING
SWITCH
BLUE
BLUE
MOTOR
FLAME
SENSOR
SWITCH
SOLENOID(S)
HIGH LIMIT
SWITCH
FLAME
SENSOR
HEAT CHAMBER
OR
BURNER GROUND
GAS CONTROL VALVE
WHITE
BLACK
IND
L1
HSI
HSIG
L2
W
HSI CONTROL
PSI
FSI
GV
PSO
BURNER
FSG
GROUND
C
L.E.D. INDICATOR
O
F. (150
IGNITER
* THERMOSTAT
WHITE
BLACK
O
C.)