Hydrotech 9100 SXT Valve Meter Initiated Water Softener - Manual (Page 7)

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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 1 inch (22 mm) whichever is larger.
WARNING: Never insert drain line directly into a drain, sewer line, or trap. Always allow an air gap between the drain
line and the wastewater to prevent the possibility of sewage being back-siphoned into the conditioner.
Overflow Line Connection
In the event of a malfunction, the brine TANK OVERFLOW will direct “overflow” to the drain instead of spilling on the
floor. This fitting should be installed at the side of the cabinet or brine tank.
To connect the overflow line, drill the hole on the side of the tank, 2 to 3 inches below from the top of the brine tank.
Insert overflow fitting into tank and tighten with plastic thumb nut and gasket as shown. Attach length of 1/2-inch (1.3-cm)
I.D. tubing (not supplied) to fitting and run to drain. Do not elevate overflow line higher than overflow fitting.
Do not tie into drain line of control unit. Overflow line must be a direct, separate line from overflow fitting to drain, sewer
or tub. Allow an air gap as per drain line instructions.
Drain Line Connection
Overflow Fitting
Drain Tubing
Air Gap
Drain
Secure hose in place
1 inch