Twin City Torque Requirements - ES-495 User Manual
Torque requirements, Es-495, April 1997
©1997 Twin City Fan Companies, Ltd.
FAN
NESTED INLET VANES
EXTERNAL INLET VANES
SIZE
CL 1
CL 2
CL 3
CL 4
CL 1
CL2
CL 3
CL 4
122
N/A
N/A
N/A
N/A
100
100
100
100
135
N/A
N/A
N/A
N/A
100
100
100
110
150
N/A
N/A
N/A
N/A
100
100
100
140
165
100
100
100
130
100
100
130
170
182
100
100
120
160
100
100
150
210
200
100
100
140
190
100
110
180
250
222
100
110
180
240
100
140
230
300
245
100
130
210
290
100
170
280
370
270
100
160
260
350
130
210
340
450
300
120
200
320
430
160
260
410
550
330
150
240
390
520
190
310
500
670
365
180
300
480
640
230
380
610
820
402
220
360
580
770
280
460
750
1000
445
260
440
710
950
340
570
910
1220
490
320
530
860
1150
410
690
1110
1480
542
390
650
1050
1400
510
840
1780
2380
600
480
800
1280
1720
820
1360
2180
2920
660
580
970
1550
2080
990
1640
2640
3530
730
710
1190
2290
3060
1210
2010
3230
4320
807
1050
1750
2800
3750
N/A
N/A
N/A
N/A
890
1280
2120
3410
4550
N/A
N/A
N/A
N/A
982
1550
2590
4150
5550
N/A
N/A
N/A
N/A
SWSI BC/BAF Torque Requirements (in-lb)
DWDI BC/BAF
Torque Requirements (in-lb)
BCS Torque Requirements (in-lb)
FAN
NESTED INLET VANES EXTERNAL INLET VANES
SIZE
CL 17
CL 23
CL 26
CL 17
CL 23
CL 26
270
310
520
730
400
670
940
300
380
640
900
500
830
1160
330
460
780
1090
600
1000
1400
365
570
950
1330
730
1230
1720
402
690
1160
1620
890
1490
2740
445
840
1420
1980
1090
2400
3350
490
1020
1720
2400
1320
2910
4070
542
1260
2100
3540
2130
3570
4990
600
1540
3100
4330
2610
4370
6100
660
1860
3750
5240
3150
5280
7380
730
2740
4590
6410
3860
6460
9030
807
3350
5610
7840
N/A
N/A
N/A
890
4070
6820
9530
N/A
N/A
N/A
982
4960
8310
—
N/A
N/A
N/A
FAN
NESTED INLET VANES
SIZE
CL 1
CL 2
CL 3
CL 4
165
100
120
200
260
182
100
140
240
320
200
100
180
280
380
222
140
220
360
480
245
160
260
420
580
270
200
320
520
700
300
240
400
640
860
330
300
480
780
1040
365
360
600
960
1280
402
440
720
1160
1540
445
520
880
1420
1900
490
640
1060
1720
2300
542
780
1300
2100
2800
600
960
1600
2560
3440
660
1160
1940
3100
4160
730
1420
2380
4580
6120
807
2100
3500
5600
7500
890
2560
4240
6820
9100
982
3100
5180
8300
—
NOTES:
1. Standard length of the handle supplied
by Twin City Fan is 10". The force
required to operate inlet vane is:
Torque in In-Lb
Length of Lever
2. For sizing actuator, multiply above
torque by 1.2 for rotary and 1.5 for lin-
ear actuators.
ES-495
April 1997
Torque Requirements