WIRING DIAGRAM
703412A
(Replaces 7034120)
03/15
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
1 2 3 4 5 6 7 8 9 10 11 12
24V
240V
BLACK
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4 5 6 7 8 9 10 11 12
1
2
3
Single-Speed
Blower Motor
1 2 3 4 5 6 7 8 9 10 11 12
Optional A/C or H/P
Relay Box
See Relay Box
Installation Instructions
and Wiring Diagram
Optional 4-Speed
Blower
Transformer
Sequencer
Thermostat
Leads
(see note 3)
RED
RED
015H 017H
Notes :
1) See unit data label for recommended supply wire sizes.
2) Thermostat anticipator setting : 0.40 Amps
3) Secure 24V connections to thermostat wires with wire
nuts and seal with approved electrical tape.
4) When using a relay box refer to the relay box installation wiring
diagram for thermostat connections.
5) If any wire in this unit is to be replaced it must be replaced with
105° C thermoplastic copper wire of the same gauge.
6) Not suitable for use on systems exceeding 120V to ground
Blower
Switch
(Std. on FEBB Models)
Ground
Line
Voltage
Dual
Supply
!
WARNING
Switch circuit breaker to the "off" position
before servicing the furnace.
BLACK
RED
RED
Thermostat
Leads
(see note 3)
NOTE : Circuit Breaker Conversion Kit
902513- has been installed in this furn
NOTE : Circuit Breaker Conversion Kit #
902514- has been installed in this furnace
Circuit A
Ground
Line
Voltage
Single Circui Adaptor (supplied)
Line
Voltage
Ground
Circuit B
Single Supply
M2
M1 M3
M4
HEATER
CIRCUIT
BREAKERS
M5
M6
HEATER
Elements
Limit
BLUE
BLACK
BROWN
YELLOW
RED
L
MH
H
ML
C
ORANGE
BLACK
BROWN
VIOLET
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
RED
ORANGE
RED
BLACK
RED
RED
RED
RED
RED
RED
BLACK
BLACK
BLACK
YELLOW
ORANGE
BLACK
/
