Use and Care Manual

Special Attention for situations where a Filter and a Softener are installed

together:

When a whole house filter and a softener are installed side by side, the only approach is to run a

separate drain line from each unit all the way to the point of termination. If this is not done, there is

the potential for drain water from the filter to back feed through the softener and overfill the brine

tank, especially when drain lines are run overhead. (Please note that back feed goes only into the

brine tank, not the service line.)

If circumstances require you to tie the drain lines together, please use the following method to avoid

back feed issues:

Run the drain lines from both systems to the point of termination, and tee them together before the

air gap. (See figures below)

WATER I

TREATED

WATER OUT

2 SEPARATE DRAIN LINES

TO APPROVED DRAIN

LOCATION WITH AI

R GAP

FILTER

SOFTENER

2 SEPARATE

DRAIN LINES

AIR GAP

APPROVED FLOOR DRAIN

TEE

* Hard drain line piping shown on the drawing.