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LEGEND
RVP — Return Velocity Pressure Transducer
SVP — Supply Velocity Pressure Transducer
Field Tubing
NOTE: Connections for 39NX with integral PIC shown. See wiring
diagrams in Fig. 9 and 12 for terminal connections in 39L control box
and all remote-mount control boxes.
Fig. 64 — Fan Volume Control — Differential Pressure Transducer (P/N HK05ZG007) Factory Wiring
NOTE: Connections for 39NX with integral PIC shown. See wiring
diagrams in Fig. 9 and 12 for terminal connections in 39L control box
and all remote-mount control boxes.
Fig. 65 — Wiring of Return Fan Volume Control
with IGVs
Field Wiring
Fig. 66 — Wiring of Return Fan Volume Control
with Variable Frequency Drive
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