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WIRING DIAGRAM
E3EB-020H, 023H, 023H-5 Ton; E2EB-015HBR
NOTES:
1. Supply wire size must be in accordance to the applicable revision of the NEC and all other
applicable codes.
2. Thermostat anticipator setting: 0.40 Amps
3. To change blower speed on units without a relay box installed refer to installation instructions
4. Refer to furnace and/or relay box installation instructions 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.
7. Refer to installation instructions for complete wiring diagram.
8. Heating and cooling may be wired on the same speed using either a relay box or the provided jumper
wire.
BLACK
BLOWER RELAY
5
2
6
4
TRANSFORMER
240V
COM
24V
GREY
BLACK
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
Figure 26. Wiring Diagram for E3EB 020H, 023H, & 023H - 5 Ton, E2EB-015HBR Furnaces
24
1
RED
2
YELLOW
3
BLUE
4
BLACK
5
WHITE
6
FUSE
VIOLET
GREEN
GREY
ELEMENTS
CONTACTOR
BLACK
ELEMENTS
CONTACTOR
GREY
WHITE
Switch circuit breakers to the "off"
position before servicing the furnace.
1
2
3
4
ORANGE
5
6
RED
WHITE
RED
RED
RED
BLACK
LIMITS
BLACK
RED
RED
RED
BLACK
BLACK
LIMITS
RED
¢710387<¤
Optional 4-Speed
WARNING
!
Blower
RED
H
BLACK
MH
ML
L
BLUE
YELLOW
ORANGE
"B" (TOP)
CIRCUIT BREAKERS
"A" (BOTTOM)
Legend:
IFM = Fan Motor
CB = Circuit Breaker
E = Heater Element
Cont = Contactor
IFR = Fan Relay
LS = Limit Switch
= Fan Plug
710387C
(Replaces 710387B)
0210
C
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