Carrier 50HG014-028 Power Exhaust or Barometric Relief Damper Mounting Details

Step 9 — Position Optional Power Exhaust or Barometric Relief Damper Hood — The optional power exhaust or barometric relief dampers are shipped assembled and tilted back into the unit for shipping. Brack- ets and extra screws are shipped in shrink wrap around the dampers.

1.Remove 9 screws holding each damper assembly in place. See Fig. 19. Each damper assembly is secured with 3 screws on each side and 3 screws along the bottom. Save screws.

Be careful when tilting blower assembly. Hoods and blow- ers are heavy and can cause injury if dropped.

2.Pivot the damper assembly outward until top edge of damper assembly rests against inside wall of unit.

3.Secure each damper assembly to unit with 6 screws across top (3 screws provided) and bottom (3 screws from Step 1) of damper.

4.With screws saved from Step 1, install brackets on each side of damper assembly. See Fig. 20.

5.Remove tape from damper blades.

Step 10 — Non-Fused Disconnect — The handle for the factory-installed non-fused disconnect is shipped inside the unit to prevent the handle from damage during shipping. Follow these steps to complete installation of the handle.

BE SURE POWER IS SHUT OFF TO THE UNIT FROM THE BUILDING POWER SUPPLY.

1.Open the control box access door.

2.Remove the small cover plate located on the unit corner post near the control section.

3.Remove the inner control box cover. The handle and shaft are located in a plastic bag at the bottom of the control box.

4.Insert the square shaft into the disconnect with the pins vertical. On the 100 amp disconnect the shaft is keyed into the disconnect and can only be installed one way with the pins vertical.

5.Insert the handle through the corner post and onto the shaft with the handle positioned so that “OFF” is on top.

6.Rotate the handle to the “ON” position to lock the pins into the handle.

7.From the inside of the corner post, attach the handle mounting screws to the handle. Slide the shaft fully into the handle and tighten the set screws(s) on the disconnect to lock the shaft. Tighten the screws that attach the handle to the corner post.

8.Rotate the handle back to the “OFF” position.

9.Replace all panels and doors.

10.Restore power to unit.

Fig. 19 — Power Exhaust or Barometric Relief Damper Mounting Details

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