Pentair 368 Manual De Instrucciones página 9

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Drain Line Connection
NOTE: Standard commercial practices are expressed here.
Local codes may require changes to the following suggestions. Check with local au-
thorities before installing a system.
1. The unit should be above and not more than 6.1 m (20 feet) from the drain. Use an appropriate
adapter fitting to connect 13 mm (1/2-inch) plastic tubing to the drain line connection of the control
valve.
2. If the unit is located 6.1-12.2 m (20-40 feet) from drain, use 19 mm (3/4-inch) tubing. Use appropriate
fittings to connect the 19 mm (3/4-inch) tubing to the 19 mm (3/4-inch) NPT drain connection on valve.
3. The drain line may be elevated up to 1.8 m (6 feet) providing the run does not exceed 4.6 m (15 feet)
and water pressure at the softener is not less than 2.76 bar (40 psi). Elevation can increase by 610 mm
(2 feet) for each additional 0.69 bar (10 psi) of water pressure at the drain connector.
4. Where the drain line is elevated but empties into a drain below the level of the control valve, form a
180 mm (7-inch) loop at the far end of the line so that the bottom of the loop is level with the drain line
connection.This will provide an adequate siphon trap.
Where the drain empties into an overhead sewer line, asink-type trap must be used.
5. Use pliers to expand a clamp. Slide the clamp up one end of the longer length drain line tubing about
2-5 cm (1-2 inches) and release.
6. Push the tubing over the ribbed drain line fitting.
7. Expand the clamp and move it up the tube to pinch the tube to the fitting.
8. Secure the discharge end of the drain line to prevent it from moving.
NOTE: The drain line connects to the elbow previously installed. It is located between
the water line connections at the rear of the valve.
NOTE: Waste connections or drain outlet shall be designed and constructed to provide
for connection to the sanitary waste system through an air-gap of 2 pipe diameters or
22 mm (1 inch) whichever is larger.
WARNING: Never insert drain line directly into a drain, sewer line or trap (Figure 8). Always
allow an air gap between the drain line and the wastewater to prevent the possibility of
sewage being back-siphoned into the conditioner.
Pentair Residential Filtration, LLC
Right Way
Figure 8 Drain Line with Air Gap
9
Rev B

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