11 E2 Service Manual
Table 3. Electrical Specifications
Recommended Wire
Sizes*
Model
Max Over-
Min.
75°C Copper
Low-Voltage
E2EH/
E2EB-
Supply
Circuit
Total
Amperes
Current
Rating
Circuit
Ampacity
Wire Size
Ground Size
Thermostat Wire
Size
010
Single
45.5
60
57
6
10
012
Single
52.1
70
65
6
8
Dual
"A"
28.0
40
35
8
10
"B"
24.2
30
30
10
10
015
Single
66.3
90
83
4
8
Dual
"A"
45.5
60
57
6
10
"B"
20.8
30
26
10
10
017
Single
71.3
90
89
3
8
Dual
"A"
48.8
60
61
6
10
"B"
22.5
30
28
10
10
020
Single
87.1
125
109
2
6
Dual
"A"
45.5
60
57
6
10
"B"
41.7
60
52
6
10
023
Single
93.8
125
117
1
6
Dual
"A"
45.5
60
57
6
10
"B"
48.3
60
60
6
10
* All wire sizes for copper conductors only, based on NEC Table 310-16. Equivalent wiring may be used per NEC.
2-Wire
system max wire
lengths :
24 Ga. = 55’
22 Ga. = 90’
20 Ga. = 140’
18 Ga. = 225’
4 or more-Wire
system max wire
lengths :
24 Ga. = 25’
22 Ga. = 45’
20 Ga. = 70’
18 Ga. = 110’
IMPORTANT:
If a relay box is installed, blower speeds for
heating and cooling are set inside the relay box
(see instructions included with relay box). The
blower speed inside the furnace control box
must be set to low or medium-low. Never change
to a heating speed lower than that shown in
Table 4.
WARNING:
To avoid personal injury or property damage, make
certain that the motor leads cannot come into
contact with non-insulated metal components of
the unit.
See Table 4 for the lowest speed approved for the heating
output of the unit. Since the blower leads connect to the
control box, blower speed selection is accomplished through
use of the proper color-coded blower lead located inside the
control box. The speed(s) set by the factory may be different
from that shown on the wiring diagrams. See the unit control
box for blower speed(s) set at factory.
Changing Blower Speed
E2EH: The selected heating blower lead is attached to
terminal 2 of blower selector switch.
a. Remove blower lead from terminal 2.
b. Choose desired speed and install new blower lead onto
terminal 2 of blower selector switch.
E2EB: The selected heating blower lead is attached to
terminal 6 on blower relay. The selected cooling blower lead
is attached to terminal 4 on blower relay.
a. Remove heating blower lead from terminal 6 on blower
relay.
b. Choose desired speed and install new blower lead onto
terminal 6 of blower relay for new heating speed.
Selecting Blower Speed
Table 4. Furnace Blower Speed Data
!
!
Plug/Receptical Position Pin 1 Pin 2
Pin 3 Pin 4
2-Speed Blower
Low
High
-
-
4-Speed Blower
Low
Med-Lo Med-Hi
High
Control Box Blower Lead
Red Yellow
Blue Black
Minimum approved speed for
017, 020 and 023 models.
Minimum approved
speed for 010, 012
and 015 models.
Summary of Contents for E2EB 010H
Page 1: ...E2 Series Electric Furnaces Service Manual ...
Page 2: ......
Page 13: ...13 E2 Service Manual Figure 15 E2EH 010 Wiring Diagram ...
Page 14: ...14 E2 Service Manual Figure 16 E2EH 012 Wiring Diagram ...
Page 15: ...15 E2 Service Manual Figure 17 E2EH 015 017 Wiring Diagram ...
Page 16: ...16 E2 Service Manual Figure 18 E2EH 020 023 Wiring Diagram ...
Page 17: ...17 E2 Service Manual Figure 19 E2EB 010 Wiring Diagrams ...
Page 18: ...18 E2 Service Manual Figure 20 E2EB 012 Wiring Diagram ...
Page 19: ...19 E2 Service Manual Figure 21 E2EB 015 017 Wiring Diagram ...
Page 20: ...20 E2 Service Manual Figure 22 E2EB 020 023 Wiring Diagram ...
Page 21: ...21 E2 Service Manual Figure 23 Two Wire Relay Box for A C E2EH 020 and 023 Units ...
Page 22: ...22 E2 Service Manual Figure 24 4 7 Wire Relay Box for H P E2EH 020 and 023 Units ...
Page 23: ...23 E2 Service Manual Figure 25 4 7 Wire Relay Box for H P E2EB 020 and 023 Units Part 1 ...
Page 24: ...24 E2 Service Manual Figure 26 4 7 Wire Relay Box for H P E2EB 020 and 023 Units Part 2 ...
Page 27: ......
