L.B. White 170 Classic - Manual (Page 12)

CAUTION
Always refer to the heater’s electrical connection diagram when servicing to avoid wiring errors and heater malfunction.
Check for proper operation after servicing.
12
Electrical Connection and Ladder Diagram
ELECTRICAL LADDER DIAGRAM
ELECTRICAL CONNECTION DIAGRAM
WARNING: THIS HEATER MAY START AT ANY TIME
HIGH LIMIT
SWITCH
SOLENOID
AIR PROVING SWITCH
MOTOR
GROUND
THERMOSTAT
NEUTRAL
GROUND
MOTOR
HIGH LIMIT
SWITCH
GAS
CONTROL
VALVE
WHITE
WHITE
WHITE
BLACK
BLACK
BLACK
BLACK
BLACK
GREEN
BLA
CK
BLA
CK
BLACK OR RED
BLACK
OR RED
AIR PROVING SWITCH
(NOT SUPPLIED ON SOME MODELS)
POWER
CORD
THERMOSTAT
(OPTIONAL)
JUMPER
(REMOVE TO ADD
THERMOSTAT)
NOTE: IF AIR PROVING SWITCH IS NOT SUPPLIED, POWER IS SENT
DIRECTLY TO HIGH LIMIT SWITCH. SEE "DASHED" LINE.
IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A
TEMPERATURE RATING OF AT LEAST 302 O F (150 O C).