25
L
C
ORANGE
BLACK
RED
TRANSFORMER
240V
24V
1
2
3
CONTACTOR
LIMITS
TOP ELEMENTS, 10.0/10.8 KW
BLOWER
SWITCH
ELEMENTS
BOTTOM ELEMENT, 5.0/5.4 KW
H
BLACK
ORANGE
GREY
BLACK
YELLOW
RED
BLACK
YELLOW
RED
RED
RED
BLACK
4
2
3
1
12
3
456
1
2
3
4
56
FUSE
BLACK
BROWN
VIOLET
RED
GREY
GREY
RED
GREY
COM
CONTACTOR
RED
RED
RED
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
BLACK
BLACK
BLACK
WHITE
BLACK
BLACK
WHITE
!
W
ARNING:
Switch circuit breakers to
the OFF position before
servicing the furnace.
Legend:
CB – Circuit
Breaker
E – Heater Element
IF
S
– Fan
S
witch
Cont – Contactor
L
S
– Limit
S
witch
IFM – Fan Motor
– Fan Plug
NOTES:
1)
S
ee unit data label for recommended supply wire sizes.
2
)
Thermostat anticipator setting: 0.40 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
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
)
This wire is used with some accessories.
S
ee
accessory Installation Instructions for further details.
Figure 24. E3EH 015H, E3EH 017H Wiring Diagrams
240V
Cont 1
C
L
IFM
CB-A
CB-A
CB-B
CB-B
IFS
Transformer
LS
Bottom -
5.0/5.4
Top -
10.0/10.8
H
1
2
3
4
5
Red
Yellow
Blue
E
Cont 1
IFS
Cont 2
LS
Cont
2
Cont
1
24V
Red Pig-Tail
White Pig-Tail
6
Black
Grey
Org.
(
S
ee Note 7)
Grey Pig-Tail
E
Fuse
