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Installation - Electrical
Refer to
Table 26
for the wire size range and maximum
wiring distance for each device.
Table 26. Maximum wiring distances for low voltage
controls (ft)
Device
Fan Speed Switch
Zone Sensor
Recommendation: Do not bundle or run interconnection
wiring in parallel with or in the same conduit with any
high-voltage wires (110 V or greater). Exposure of
interconnection wiring to high voltage wiring, inductive
loads, or RF transmitters may cause radio frequency
interference (RFI). In addition, improper separation may
cause electrical noise problems. Therefore, use shielded
wire (Belden 83559/83562 or equivalent) in applications
that require a high degree of noise immunity. Connect the
shield to the chassis ground and tape at the other end.
Note: Do not connect any sensor or input circuit to an
external ground connection.
Table 27.
Free discharge and high static ECMs
programmed to standard ECM mode
115 Volt
208–230 Volt
Unit
FLA
HP
FLA
Size
1
2
1
2
1
2
3.1
0.22
1.8
3
3.1
0.22
1.8
4
3.1
0.22
1.8
6
3.1
0.22
1.8
8
3.1
0.22
1.8
10
3.1 3.1 0.22 0.22 1.8 1.8 0.22 0.22 1.6
12
3.1 3.1 0.22 0.22 1.8 1.8 0.22 0.22 1.6
Table 28. Free discharge ECMs programmed to reduced
FLA mode
115 Volt
208–230 Volt
Unit
FLA
HP
FLA
Size
1
2
1
2
1
2
0.6
0.22
0.4
3
0.6
0.22
0.4
4
0.8
0.22
0.6
6
1.1
0.22
0.8
8
1.6
0.22
1.1
10
0.7 1.2 0.22 0.22 0.5 0.8 0.22 0.22 0.4 0.6 0.24 0.24
12
0.7 1.3 0.22 0.22 0.5 0.9 0.22 0.22 0.4 0.7 0.24 0.24
80
Wire Size
Range
14–22 AWG
500
16–22 AWG
200
277 Volt
HP
FLA
2
1
2
1
2
1
0.22
1.6
0.24
0.22
1.6
0.24
0.22
1.6
0.24
0.22
1.6
0.24
0.22
1.6
0.24
1.6 0.24 0.24
1.6 0.24 0.24
277 Volt
HP
FLA
HP
2
1
2
1
2
1
0.22
0.3
0.24
0.22
0.3
0.24
0.22
0.4
0.24
0.22
0.6
0.24
0.22
0.8
0.24
Table 29. High static ECMs programmed to reduced FLA
mode
115 Volt
Unit
FLA
Size
1
2
1
2
1.3
0.22
3
1.3
0.22
4
1.7
0.22
6
2.3
0.22
8
3.1
0.22
10
1.4
2
0.22 0.22
12
1.5 2.8 0.22 0.22 1.1 1.8 0.22 0.22 0.8 1.4 0.24 0.24
Table 30. Low vertical free discharge ECMs
115 Volt
Unit Size
FLA
3
3.1
4
3.1
6
3.1
Note: Actual rpm will vary with application and configuration.
Table 31. Lowboy vertical free discharge ECMs
programmed with reduced FLA mode
Unit Size
FLA
3
0.5
HP
4
0.8
2
6
Note: Actual rpm will vary with application and configuration.
Table 32. Unit RPM
Unit
Free Discharge—Units
Size
with 2-Row Coils
H
2
980
3
980
4
1050
6
1030
8
1080
10
1050
2
1030
12
1050
1080
High Static—Units with
Unit
2-Row Coils
Size
H
2
1480
3
1400
4
1475
6
1400
8
1475
10
1475
1400
12
1475
1475
Note: Actual rpm will vary with application and configuration.
208–230 Volt
HP
FLA
HP
2
1
2
1
2
0.9
0.22
0.7
0.9
0.22
0.7
1.2
0.22
0.9
1.6
0.22
1.2
1.8
0.22
1.5
1
1.4 0.22 0.22 0.7 1.1 0.24 0.24
HP
H
0.22
1090
0.22
1090
0.22
1115
115 Volt
HP
H
0.22
1090
0.22
1090
1
0.22
1115
Free Discharge—Units with
3- and 4-Row Coils
M
L
H
840
655
980
780
580
1080
780
580
1080
780
580
1080
800
600
1080
780
580
1080
780
580
1080
780
580
1080
800
600
1080
High Static—Units with 3-
and 4-Row Coils
M
L
H
1110
865
1480
1175
860
1500
1315
1070
1580
1070
855
1475
1285
975
1475
1315
1070
1580
1070
855
1475
1315
1070
1580
1285
975
1475
277 Volt
FLA
HP
1
2
1
2
0.24
0.24
0.24
0.24
0.24
RPM
M
L
770
560
750
560
760
560
RPM
M
L
770
560
750
560
760
560
M
L
840
655
800
600
800
600
800
600
800
600
800
600
800
600
800
600
800
600
M
L
1110
865
1355
1110
1375
1240
1285
975
1285
975
1375
1240
1285
975
1375
1240
1285
975
UNT-SVX07E-EN
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