30
Figure 30. E2EB 020, 023, and 023 - 5 Ton Wiring Diagrams
!
W
ARNING:
Switch circuit breakers to
the OFF position before
servicing the furnace.
NOTES:
1
)
See unit data label for recommended supply wire sizes.
2
)
Thermostat anticipator setting: 0.75 Amps.
3
)
To change blower speed on units without a relay box refer
to installation instructions.
4
)
Refer to furnace and/or relay box installation for thermo-
stat 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
)
This wire is used with some
accessories. See
accessory Installation
Instructions for further
details.
TRANSFORMER
240V
24V
BLOWER RELAYS
GREY
YELLOW
CONTACTOR
1
2
3
4
5
6
GREY
WHITE
LIMIT
BLACK
BLACK
BOTTOM ELEMENT, 10.0 KW
ORANGE
RED
RED
RED
BLACK
BLACK
3
2
1
3
2
1
6
5
4
6
5
4
RED
BLUE
BLACK
VIOLET
GREY
GREY
RED
WHITE
YELLOW
RED
GREY
WHITE
WHITE
GREEN
1
2
3
4
5
6
GREEN
GREY
BLACK
GREEN
BLUE
ORANGE
BLACK
RED
YELLOW
BLACK
GREY
CONTACTOR
LIMIT
BLACK
TOP ELEMENT, 10.0/11.6 KW
BLACK
RED
MH
ML
L
H
C
BLACK
RED
(See Note 7)
BLACK
Legend:
CB – Circuit Breaker
E – Heater Element
IFR
– Fan Relay
Cont – Contactor
LS – Limit Switch
– Fan Plug
– Control Plug
60A
ON
OFF
GRD
Single
Supply
(optional)
OR
Circuit A
Circuit B
GRD
GRD
Ground
Dual
Supply
60A
60A
ON
ON
OFF
OFF
Ground
Line
Voltage
Ground
Line
Voltage
60A
ON
OFF
CIRCUIT
BREAKERS
IFM
– Fan Motor
240V
Cont 1
CB-B
CB-B
Transformer
Top -
10.0/11.6
Btm - 10.0
E
E
Cont 1
Cont 2
Cont 2
24V
Red Pig-Tail
White Pig-Tail
4
Fuse
2
LS
Cont
2
Cont
1
Green Pig-Tail
Grey Pig-Tail
3
5
IFR2
IFR1
LS
CB-A
CB-A
Red Jumper Wire
(See note 8)
IFR1
IFR2
Grey
Black
Blue
Yellow
Red
2
3
4
5
1
ML
C
IFM
H
MH
L
4 Speed
6
Org.