Drain Line Connection
Note: Standard commercial practices are expressed here. Local
codes may require changes to the following suggestions. Check
with local authorities before installing a water conditioning
system.
1. The unit should be above and not more than 20 feet (6.1 m)
from the drain. Use an appropriate adapter fitting to connect
1/2-inch (1.3 cm) plastic tubing to the drain line connection of
the control valve.
2. If the backwash flow rate exceeds 5 gpm (22.7 Lpm) or if
the unit is located 20-40 feet (6.1 – 12.2 m) from drain, use
3/4-inch (1.9 cm) tubing. Use appropriate fittings to connect
the 3/4-inch tubing to the 3/4-inch NPT drain connection on
valve.
3. The drain line may be elevated up to 6 feet (1.8 m) provided
the run does not exceed 15 feet (4.6 m) and water pressure
at the conditioner is not less than 40 psi (2.76 bar). Elevation
can increase by 2 feet (61 cm) for each additional 10-psi (.69
bar) of water pressure at the drain connector.
4. When the drain line is elevated but empties into a drain below
the level of the control valve, form a 7-inch (18 cm) 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. Tie or wire the hose in place at the drain point.
Also provide an air gap of at least 1-1/2 inch between the end
of the hose and the drain point.
5. When the drain empties into an overhead sewer line, a sink-
type trap must be used.
6. Secure the end of the drain line to prevent it from moving.
Figure 9 Drain Line Connection
WARNING: Never insert drain line directly into
a drain, sewer line or trap (Figure 9). Always
allow an air gap between the drain line and the
wastewater to prevent the possibility of sewage
being back-siphoned into the conditioner.
Regenerant Line Connections
The regenerant line from the brine tank safety brine valve (Figure
11) connects to the valve. Make sure both safety valve tube
fittings are tight. Make the connections and hand tighten.
Note: Be sure that the regenerant line is secure and free from
air leaks. Even a small leak may cause the regenerant line to
drain out, and the conditioner will not draw regenerant from
the tank. This may also introduce air into the valve causing
problems with valve operation.
Ensure that plumber tape pipe sealant is applied to the 3/8-inch
NPT regenerant line connection (Figure 10).
Regenerant Line Connection
Regenerant Line Connection
Tube Fitting
Figure 11 Salt Tank Safety Brine Valve
and Brine Well Assembly
12
Figure 10