8 • WHOLE HOUSE WATER SOFTENING SYSTEM
8. PLUMBING GROUND CONNECTION
• In some homes, metal piping may serve as a ground connection for the home electrical system.
Installing a Pentair Softener with its nonmetallic valve body will interrupt the ground connection.
Whenever a system is installed on metallic plumbing, we recommend you use grounding pipe clamps
and a ground cable to maintain continuity of the ground connection from the inlet to the outlet pipe.
¼” bare stranded wire is recommended for the ground cable. Check electrical continuity of the
connection after installation.
9. INSTALL THE DRAIN LINE AND AIR GAP
(AIR GAP NOT INCLUDED WITH THE UNIT)
• Using the supplied drain line fitting, use plumbers tape on the threads and attach to the top of the
valve. Run 1/2 inch I.D. flexible drain line tubing (not supplied) to an appropriate drain. Most local codes
require an air gap. See pictures below.
Notice
Drain line may be plumbed with rigid pipe or PEX, if required by local code. The drain connection on the valve will
accommodate any standard 3/4 inch NPT fitting.
• If you wish to use an air gap device (not included) you may purchase one from the Order Department.
1/2 " DRAIN LINE
FLOOR DRAIN
GAP-A-FLOW AIR GAP
"Mr. Drain"
AIR GAP
STAND PIPE
FOR
WASHER,
DRAIN
STACK
Air Gap Floor Drain
Part Number: 13142
Air Gap Mr. Drain,
Part Number: 14199
Standard Air Gap
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