WIRING DIAGRAM
703409A
(Replaces 7034090)
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
Circuit
A
Transformer
Sequencer
Thermostat
Leads
(see note 3)
RED
RED
M2
M1 M3
M4
010H
Notes :
1) See unit data label for recommended supply wire sizes.
2) Thermostat anticipator setting : 0.20 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
HEATER
Elements
Limit
Blower
Switch
(Std. on FEBB Models)
CIRCUIT
BREAKER
Ground
Line
Voltage
Single
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 #
902513- has been installed in this furnace
BLUE
ORANGE
BLACK
BROWN
YELLOW
RED
L
MH
H
ML
C
VIOLET
BLACK
BLACK
BLACK
BLACK
BLACK
RED
BLACK
RED
RED
RED
RED
BLACK
BLACK
YELLOW
BROWN
BLACK
ORANGE
/