25
Electrical Connection and Ladder Diagram
YELL
OW
YELL
OW
L1
IND
L.E.D.
MV
PS2
PS1
W
FS
COM
DSI CONTROL
R
X
C
DIRECT SENSE
IGNITER
HIGH LIMIT
SWITCH
AIR PROVING SWITCH
GAS VALVE
SOLENOIDS
BURNER GROUND
THERMOSTAT
HIGH
HEAT
LOW
HEAT
ELECTRICAL LADDER DIAGRAM
HEAT
VENT
SELECTOR SWITCH
MOTOR
TR
ANSFORMER
L1
NEUTRAL
GROUND
120V
24V
IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THE HEATER MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL
HAVING A TEMPERATURE RATING OF AT LEAST 302 F (150 C)
OFF
CAUTION-REFER TO THE HEATER’S ELECTRICAL CONNECTION DIAGRAM WHEN SERVICING
TO AVOID WIRING ERRORS AND HEATER MALFUNCTION. CHECK FOR PROPER OPERATION AFTER SERVICING.
WARNING: THIS HEATER MAY START AT ANY TIME
FAN
MOTOR
TRANSFORMER
AIR PROVING
SWITCH
BLUE
BLUE
HIGH VOLTAGE
IGNITION LEAD
IGNITER
FLAME SENSOR
L1
IND
L.E.D.
MV
PS2
PS1
W
FS
R
X
C
COM
DSI CONTROL
SELECTOR SWITCH
HEAT
OFF
VENT
GAS CONTROL
VALVE
GREEN
BURNER
GROUND
HIGH LIMIT
SWITCH
HI
WHITE
BLACK
RED
GREEN
GROUND
(OPTIONAL)
THERMOSTAT
LO
HI
MV
C
YELLOW
BLUE
RED
ELECTRICAL CONNECTION DIAGRAM
120V
24V
BL
ACK
BL
ACK
BROWN
BL
UE
BL
UE
WHITE
YELL
OW
GREEN
GREEN
POWER CORD
BLACK
WHITE
GREEN
GROUND
BLACK
WHITE
YELLOW
GREEN
TERMINAL
STRIP
BL
ACK
BL
ACK
BL
ACK
BL
ACK
BL
ACK
BL
ACK
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
BL
ACK
JUMPER
JUMPER
JUMPER
YELL
OW
YELL
OW
BROWN
WHITE
BL
ACK
BROWN
BROWN
BROWN
BLACK
BLACK
WHITE
WHITE
WHITE
BLACK
BURNER
GROUND
1
2
3
4
5
6
7
8
9
10
