Air gap requirements, Valve drain requirements, Location requirements – Whirlpool WHES40 User Manual
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Air Gap Requirements
A drain is needed for regeneration discharge water. A floor drain, close to the water softener, is
preferred. A laundry tub, standpipe, etc., are other drain options. Secure valve drain hose in place.
drain
drain
floor drain
drain
Figure 2
Valve Drain Requirements
Use the flexible green drain hose, that is included, measure and cut to the length needed. Flexible drain
hose is not allowed in all localities (check your plumbing codes). If local codes do not allow use of a
flexible drain hose, a rigid valve drain run must be used. Buy a compression fitting (garden hose threads
X 1/2 in. minimum tube) and 1/2” tubing from your local hardware store. Then plumb a rigid drain as
needed (sec Figure 3).
NOTE:
Avoid long drain hose runs, or elevating the hose more than 8’ above the floor. Make
the water softener valve drain as short and direct as possible.
Figure 3