110 CLCH-SVX07C-EN
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In Table 28 through Table 31 , the cfm at 10Vdc is a calculated value based on area and peak velocity.
In certain situations, it can be advantageous to raise the velocity of air through the remaining Traq
dampers by closing off one or more dampers in the unit. The cfm at 10Vdc can be recalculated
based on the proportion of remaining Traq dampers or by multiplying the remaining area of
dampers by peak velocity.
Table 27. Altitude adjustment factors
Sea level = 1.0
Elevation (feet) k
1000 0.982
2000 0.964
3000 0.949
4000 0.930
5000 0.914
6000 0.897
7000 0.876
8000 0.860
9000 0.846
10,000 0.825
Table 28. Back or top inlet standard Traq dampers- air mixing and indoor economizer section-VCM voltage versus airflow at
sea level
Unit Size Part Number
Traq Damper
Size (inches) Quantity
Peak Velocity
(fpm)
Total Area
(ft
2
)
CFM @ 10VDC
Peak Velocity
L/s @ 10VDC
Peak Velocity
3 50182901 13 1 2475 0.92 2279 1076
4
50182901 13 2 2475 1.84 4559 2151
6
8
50182901 13 3 2475 2.76 6838 3227
10
12
50182902 16 3 2475 4.19 10365 489114
17
21
50182924 20 3 2600 6.54 17012 8028
25
30
50182903 24 3 2600 9.42 24492 1155835
40
50
50182904 28 3 2600 12.83 33358 15742
57
66 50182904 28 4 2600 17.10 44460 20981
80 50182904 28 5 2600 21.38 55588 26232
100
50182904 28 6 2600 25.66 66716 31483
120
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