Watts Autotrol 263 / 268 (400 Series) - Manual (Page 4)

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4. Where 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.
5. Where the drain empties into an overhead sewer
line, a sink-type trap must be used.
IMPORTANT: Never insert drain line 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.
Figure 3
Note : Standard commercial practices have been
expressed here. Local codes may require changes to
these suggestions.
Brine Line Connection
It will be necessary to install the brine line to the brine
fitting on the valve (3/8-inch NPT).
Be sure all fittings and connections are tight.
Overflow Line Connection
In the absence of a safety overflow and in the event of
a malfunction, the BRINE TANK OVERFLOW will direct
“overflow” to the drain instead of spilling on the floor
where it could cause considerable damage. This fitting
should be on the side of the cabinet or brine tank.
To connect overflow, locate hole on side of brine tank.
Insert overflow fitting (not supplied) into tank and
tighten with plastic thumb nut and gasket as shown
(Figure 4). 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 3 inches (7.6 cm) below
bottom of 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 (Figure 3).
Figure 4
Right Way
Brine Tank
Overflow Fitting
Installed
Connect 1/2-inch (1.3-cm)
Tubing or Hose and Run
to Drain