Mounting the Zone Damper and Bypass Damper Controller - Verasys - LC-BYP200-0 - LC-ZEC310-0 - Field Device - BYP200 - ZEC310

Verasys ZEC310 Zone Damper and BYP200 Bypass Damper Controllers Installation Guide

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  1. Disconnect power from the controller transformer, and heater circuits, if applicable.
  2. Set all the switches on the field controller to their known settings. See Setup and adjustments.
  3. Set the MS/TP address. See Setup and adjustments.
  4. Ensure that end-of-line (EOL) is set to the off position. Refer to the Verasys Zone Coordinator Installation Instructions (Part No. 24-10143-1280) for proper switch setting.
  5. Place the controller in the proper mounting position on the actuator shaft so that the wiring connections are easily accessible.
  6. Ensure that the controller base is perpendicular to the damper shaft. If necessary, use a spacer to offset tipping of the controller caused by the shaft bushings.
    Note: Use the alignment marks to center the captive spacer to ensure sufficient ZEC/BYP controller movement in either direction.
    Figure 1. Captive spacer alignment marks

  7. Secure the self-drilling No. 10 screw through the captive spacer with a power screwdriver and 100 mm (4 in.) extension socket. Alternatively, use a punch drill to mark the position of the shoulder washer.
  8. Drill a hole using an 8 mm (5/16 in.) drill bit.
  9. Insert the mounting screw and tighten against the spacer.
  10. Locate the damper position using the typical marking on the end of the damper shaft.
  11. Note the direction, clockwise (CW) or counterclockwise (CCW), required to close the damper. The actuator configuration depends on the amount of rotation necessary for the damper to go from the full-open to full-closed position.
    • For 90° rotation, install the ZEC while the damper is in the full-closed position.
    • For 45° or 60° rotation, install the ZEC when the damper is in the full-open position. See step 13 for further information.
  12. Push down and hold the manual override button and turn the actuator coupler until it contacts the mechanical end-stop at either the full-closed or full-open position.
    Figure 2. Manual override and actuator coupler

    Table 1. Manual override and actuator coupler
    Callout Description
    1 Manual override button
    2 Actuator coupler
  13. If the damper for a 45° or 60° box closes CCW, rotate the coupler to the CW mechanical limit. If the damper for a 45° or 60° box closes CW, rotate the coupler to the CCW mechanical limit. This action sets the open end-stop; the closed end-stop is set by the closed damper.

    For 45° and 60° boxes, hard stops must be provided at both full-closed and full-open damper positions. If you install the controller at the full-open position, the controller provides the open stop for 45° and 60° boxes. The closed damper seal provides the full-closed stop.

  14. Tighten the square coupler bolt to the shaft using an 8 mm (5/16 in.) wrench or 10 mm (3/8 in.) 12-point socket. Tighten to 10.5 to 11.5 N·m (95 to 105 lb·in).
  15. Attach the poly tubing to the ZEC pressure transducer ports and put a loop in the poly tubing to trap condensation. Loop the poly tubing before you make the final connections.
  16. Push the manual override button, and turn the actuator coupling manually to ensure that the actuator can rotate from full-closed to full-open positions without binding.
  17. Rotate the damper to the full-open position.