70 CLCH-SVX07C-EN
Component Installation Requirements
Mixing section and economizer dampers are designed for the damper actuators to be direct
coupled and installed in the air stream. If other provisions are required, modifications to the section
will be the responsibility of the installing contractor.
Table 21. Internal face-and-bypass torque
requirements
Table 22. External face-and-bypass torque
requirements
Unit size Torque (in-lb.) Unit size
Bypass Torque
(in-lb.)
Face Torque
(in-lb.)
3 12.8 3 8.4 13.8
4 19.7 4 13.6 21.3
6 20.9 6 13.6 27.5
8 31.1 8 16.4 32.5
10 39.2 10 21.0 40.9
12 54.8 12 23.1 54.9
14 59.9 14 25.5 60.1
17 70.5 17 25.5 71.1
21 91.3 21 28.8 92.5
25 103.5 25 28.8 105.0
30 123.0 30 34.5 124.7
35 133.7 35 34.7 133.7
40 148.6 40 35.0 148.6
50 206.7 50 40.4 206.7
57 225.7 57 40.4 225.7
66 278.2 66 85.3 278.2
80 321.5 80 85.3 321.5
100 416.1 100 96.0 416.1
120 498.7 120 117.2 498.7
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