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Installation
3.2.2.5 Align the sensor vertically—Flo-Dar with SVS
The sensor must be aligned vertically to make sure that the sensor is above the flow
under normal full flow conditions and that the SVS is activated under surcharge
conditions.
Prerequisites
• Ruler or tape measure
Procedure
1. Measure directly above the crown of the pipe to the top of the frame (Figure 9 on
page 20).
2. If the pipe lip is longer than 5½ inches, install the 12-inch spacer between the wall
mount bracket and the frame (Figure 12).
3. Loosen the clamp on the wall mount bracket and position the top of the frame above
the crown of the pipe at the specified distance:
• 6 inches for a pipe diameter that is less than 24 inches
• 5 inches for a pipe diameter that is equal to or larger than 24 inches
Figure 11 Vertical alignment of Flo-Dar sensor
1 Spacer 2 Distance from crown of pipe to top of frame
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