550.13-N10Y
Unitary Products Group
14
®
POWER AND CONTROL WIRING
Install electrical wiring in accordance with the latest National
Electrical Code (NFPA standard No. 70) and/or local regula-
tions. The unit should be grounded in accordance with these
codes.
Route the power wires into the unit through the 1-3/8” knock-
out in the rear panel, and connect them to the terminals on
blower motor contactor 10M. Route the control wires into the
unit through the 7/8” hole in the rear panel, and connect them
to the terminals on block 4TB. Refer to the unit drawing in
Figure 18 and 19 for the location of these knockouts.
If the unit includes and electric heat accessory, route the
power wires into heater control box in lieu of the unit. Refer
to the electric heat instruction Form 550.13-N10.1U for addi-
tional installation information.
Refer to Tables 9 and 10 to size the disconnect switch, the
power wiring, the fuses and the control wiring. Refer to Fig-
ure 17 for field wiring diagrams.
NOTE: Motors are wired for a 460V power supply. Refer to
the wiring diagram inside the motor terminal box when recon-
necting motor leads for a 208 or 230 volt power supply.
TABLE 8: SUPPLY AIR PERFORMANCE LES240
1
RPM
CFM
6400
7200
8000
8800
9600
ESP
2
BHP
3
kW
4
ESP
2
BHP
3
kW
4
ESP
2
BHP
3
kW
4
ESP
2
BHP
3
kW
4
ESP
2
BHP
3
kW
4
600
0.15
1.49
1.42
-
-
-
-
-
-
-
-
-
-
-
-
650
0.31
1.71
1.63
0.14
2.00
1.90
-
-
-
-
-
-
-
-
-
700
0.49
1.95
1.86
0.32
2.27
2.16
0.12
2.63
2.50
-
-
-
-
-
-
750
0.67
2.21
2.10
0.51
2.56
2.44
0.32
2.92
2.78
0.10
3.35
3.19
-
-
-
800
0.85
2.50
2.38
0.70
2.85
2.71
0.52
3.25
3.09
0.31
3.70
3.52
0.07
4.20
4.00
850
1.05
2.80
2.66
0.91
3.19
3.04
0.74
3.61
3.44
0.53
4.07
3.87
0.29
4.62
4.40
900
1.25
3.11
2.96
1.12
3.55
3.38
0.96
3.99
3.80
0.76
4.51
4.29
0.53
5.07
4.82
950
1.46
3.46
3.29
1.34
3.92
3.73
1.18
4.43
4.22
1.00
4.97
4.73
0.78
5.53
5.26
1000
1.67
3.82
3.64
1.56
4.33
4.12
1.42
4.88
4.64
1.24
5.44
5.18
-
-
-
1.
Unit resistance is based on a wet evaporator coil, clean filters, and unit tested in horizontal configuration.
2.
Available static pressure in IWG to overcome the resistance of the duct system and any accessories added to the unit. Refer to the
respective tables for the resistance of theses accessories and for additional motor and drive data.
3.
Motors can be selected to operate into their service factor because they are located in the moving air stream, upstream of any heating
device.
4.
kW is based on 6% drive losses and a motor efficiency of 83.1%. Calculate kW by using the following formula:
kW = (746 X BHP X DRIVE LOSSES) / (1000 X MOTOR EFFICIENCY)
