York VSD 419 - Page 25

Figure 6: OptiSpeed system architecture (Model LVD 419 shown, similar to 385, 503, 608, 658,
704, and 900 models)
Callout Description
1 Cooling coil
2 Cooling fan
3 SCR trigger board
4 SCR/Diode module
5 IGBT module
6 Gate driver board
25Liquid-Cooled OptiSpeed Compressor Speed Drive