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Evaporator
Fan Motor
Specifications
(cont)
UNIT
EFFICIENCY
DRIVE
ORIENTATION
VOLTAGE
MAX BHP
MAX AMPS
50PM
28
Low
Mid-Low
Mid-High
High
Low
Mid-Low
Mid-High
High
Vertical
Vertical
Vertical
Vertical
Horizontal
Horizontal
Horizontal
Horizontal
208
260
460
575
208
260
460
575
208
260
460
575
208
260
460
575
208
230
460
575
208
230
460
575
208
230
460
575
208
230
460
575
(%)
87.5
87.5
87.5
87.5
87.5
87.5
87.5
87.5
88.5
88.5
88.5
88.5
89.5
89.5
89.5
89.5
87.5
87.5
87.5
87.5
87.5
87.5
87.5
87.5
88.5
88.5
88.5
88.5
89.5
89.5
89.5
89.5
5.67
5.75
5.75
5.75
5.67
5.75
5.75
5.75
7.66
8.51
8.63
8.63
9.94
10.45
11.19
11.50
5.67
5.75
5.75
5.75
5.67
5.75
5.75
5.75
7.66
8.51
8.63
8.63
9.94
10.45
11.19
11.50
15.8
15.4
7.7
6.0
15.8
15.4
7.7
6.0
22.0
22.0
11.6
9.4
28.0
28.0
15.0
12.0
15.8
15.4
7.7
6.0
15.8
15.4
7.7
6.0
22.0
22.0
11.6
9.4
28.0
28.0
15.0
12.0
NOTES:
1. Extensive motor and electrical testing ensures that the motors can be utilized with confidence
up to the maximum
applied bhp, watts, and amps.
motor up to the maximum
ratings shown will not result in nuisance tripping or premature
motor failure. Unit warranty will not be affected.
2. Convert bhp to watts using the following
formula:
bhp (746)
watts =
motor efficiency
Using the fan
Accessory/FIOP
Static
Pressure
(in. wg)*
COMPONENT
CFM
4,000
4,500
5,000
5,500
8,000
8,500
7,000
7,500
8,000
Economizer
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.10
CFM
COMPONENT
8,500
9,000
9,500
10,000
10,500
11,000
11,500
12,000
Economizer
0.11
0.12
0.13
0.15
0.16
0.17
0.19
0.20
LEGEND
FlOP - Factory-Installed
Option
*The static pressure must be added to the external static pressure. The sum and the evaporator
entering-air
cfm should then
be used in conjunction
with the Fan Performance
tables to determine
blower rpm and watts.
52
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