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Performance Data
Evaporator Fan Performance, Low Static Fan Drive, 20 Tons
Table 25.
Evaporator Fan Performance 20 Ton TWE240B - Air Handler
.10"
.20"
CFM
RPM
BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
5 HP Standard Motor & Field Supplied Low Static Drive
6400
—
—
—
6800
—
—
—
7200
—
—
573
1.58
7600
—
—
603
1.84
8000
585
1.97
633
2.11
8400
619
2.2
657
2.35
8800
652
2.43
680
2.60
9200
682
2.76
723
2.98
9600
711
3.08
766
3.36
1.20"
1.40"
CFM
RPM
BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
5 HP Standard Motor & Sheaves
6400
883
2.86
930
3.16
6800
894
3.07
941
3.4
7200
904
3.29
951
3.65
7600
919
3.55
963
3.94 1007 4.34 1050 4.75 1093 5.16 1136 5.57 1179 5.98
8000
933
3.8
975
4.23 1018 4.65 1060 5.07 1103 5.49 1145 5.91 1187 6.34
8400
947
4.14
989
4.57 1032 5.01 1074 5.44 1117 5.87 1159 6.31 1200 6.73
8800
960
4.47 1002 4.92 1045 5.36 1087 5.81 1130 6.26 1172 6.70
9200
975
4.83 1016 5.28 1058 5.73 1099 6.17 1141 6.62 1182 7.07
9600
990
5.2
1030 5.65 1071 6.09 1111 6.54 1152 6.99 1192 7.43
Notes:
1. Data includes pressure drop due to wet coil and 2" filter.
2. Fan motor heat (MBh) = 3.15 x BHP.
3. Trane's factory supplied motors, in commercial equipment, are definite purpose motors, specifically designed and tested to operate reliably and
continuously at all cataloged conditions. Using the full horsepower range of our fan motors as shown in our tabular data will not result in nuisance
tripping or premature motor failure. Our product's warranty will not be affected.
(i)
Field Supplied Low Static Drive (use
Table 26.
Low Static Fan Drive 20 Tons TWE240B/TWE240E Air Handler
Field Supplied Low Static Fan Drive
20 Tons TWE240B/TWE240E Air Handler
Motor Sheave
Turns Open
0
1
2
3
4
5
6
(i)
Field supplied components required:
Motor Sheave: Variable Pitch (4.3-5.5 inch
Pitch Diameter) 1.125 inch Bore, Single Groove, "B" Belt.
Blower Sheave: Fixed Pitch (13.4 inch Pitch Diameter),
1.4375 inch Bore, Single Groove, "B" Belt.
Belt: B67
SSP-PRC001-EN
External Static Pressure (Inches of Water Gauge)
.30"
.40"
—
570
1.41
612
1.57
—
593
1.58
635
1.74
615
1.75
657
1.92
651
1.98
694
2.15
686
2.21
730
2.39
710
2.54
752
2.73
733
2.86
773
3.07
760
3.19
790
3.37
787
3.52
807
3.67
External Static Pressure (Inches of Water Gauge)
1.60"
1.80"
976
3.52 1021 3.89 1066 4.26 1111 4.62 1156 4.99 1201 5.36
986
3.78 1030 4.16 1075 4.55 1119 4.93 1164 5.31
995
4.04 1039 4.44 1083 4.84 1127 5.23 1171 5.63
Table
26)
(i)
Nominal
RPM
712
686
660
634
609
583
557
.50"
.60"
.70"
(i)
5 HP Standard Motor & Low Static Drive Kit
654
1.7
696
1.83
743
677
1.90
722
2.08
762
700
2.09
747
2.33
781
731
2.38
766
2.57
795
761
2.66
785
2.81
809
778
2.94
801
3.09
823
794
3.22
816
3.36
837
811
3.52
834
3.68
858
828
3.82
852
3.99
878
2.00"
2.20"
2.40"
7.5 HP Oversized Motor & Sheaves
—
—
—
Low Static Fan Drive Accessory Kit
20 Tons TWE240B/TWE240E Air Handler
Motor Sheave
Turns Open
0
1
2
3
4
5
6
.80"
.90"
2.06
781
2.25
808
2.4
2.29
794
2.46
820
2.61
2.52
806
2.66
831
2.81
2.74
819
2.88
844
3.02
2.95
832
3.09
857
3.23
3.23
848
3.39
873
3.55
3.50
863
3.68
889
3.86
3.84
884
4.01
909
4.2
4.17
904
4.35
929
4.53
5 HP Standard Motor & Sheaves
2.60"
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Nominal
RPM
857
831
805
779
753
727
701
1.00"
835
2.55
846
2.76
856
2.96
869
3.17
882
3.37
899
3.71
915
4.04
932
4.4
949
4.75
27
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