Ingersoll-Rand ReliaTel, Manual, Page: 173 / 176

RT-SVD03L-EN 173
The active economizer minimum position will be
computed as a linear function, based on reported inlet
vane or VFD position, given the two endpoints:
• Minimum position with IGV @ 100%
• Minimum position with IGV @ 0%
Figure 108. OA damper minimum position with IGV/
VFD at 0% and 100%
Min Position @0%
IGV/VFD
(DCV Min Pos)
Min OA Damper
Position Target
IGV/VFD Command
IGV/VFD Command
Min Position @100%
IGV/VFD
Command
(DCV Min Pos)
IGV/VFD
Command @100%
IGV/VFD
Command @0%
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