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You will need to purchase suitable pipe or tubing for the drain line. The minimum drain line
diameter is 1/2 inch (although 3/4 inch is generally preferred). Polyethylene tubing, PEX,
PVC, CPVC, and copper pipe are all acceptable material choices for the drain line. If you are
using flexible tubing, be sure that there are no “kinks” or “crimps” in the tubing after
installation that may cause a flow restriction. If used, overhead drain lines are not to exceed
a height of 5 feet above the control valve and should be not more than 50 feet in length.
Should an overhead drain line be utilized, it is recommended that the drain line be increased
in size to 3/4”, and that it not be fastened flush to the bottom of a floor joist to minimize noise
transfer to the upstairs of the building during regeneration.
Using an appropriate fitting, connect the
drain line flow control to your drain line
tubing/pipe. The DL C can be removed
from the control valve to facilitate easier
plumbing if desired. To remove the drain
line flow control, pull on the retaining clip to
remove it and then grasp the drain line flow
control and pull outward. You may wish to
dry-fit the fitting first to make sure you line
up the drain line properly with the drain port
on the control valve if you are using rigid
pipe.
Re-insert the DL C into the control valve and securely lock into place with the retaining clip
when done.
Ensure that the drain line is thoroughly secured along its route to the drain. The drain line
will be under pressure when the backwash cycle is working. If not adequately secured, the
drain line could vibrate during backwash causing excessive noise. If this is experienced, use
additional fixtures to better secure the drain line.
Step 7 – Brine Tank Conne tions
To complete the connection of the control valve to the brine tank, you will require the black
brine tubing and numerous parts from the small parts bag. We recommend that the brine
tank be located as close as possible to the treatment tank and control valve, however, it can
be up to 10 feet away if necessary.