Typical Installation Instructions

Step 1

Note how the main and auxiliary drain fittings stick outside of the air handler panel.

If yours are recessed, please refer to Step 5

Step 2

Attach 90 deg male NPT— slip fitting to the auxiliary drain fitting as shown

Step 3

Install one Drain-Plus unit into the slip end of the elbow.

Drain-Plus should be inside of the drain pan as shown.

Step 4

Attach a male NPT thread — slip fitting to the main drain fitting.

Step 5

If your air handler drain fittings are recessed, you can use the fittings shown and 90 deg street elbows to achieve the same results as steps 2 & 4.

Install the short threaded fitting and a 90 deg street elbow on the auxiliary drain fitting.

Install the long threaded fitting and a 90 deg street elbow on the main drain fitting.

Step 6

Attach a 90 deg elbow,   a short piece of pipe, and another 90 deg elbow to the main drain line.

Step 7

Run your main drain piping outside and down the wall.

Step 8

Install Drain-Plus to the end of the main drain line on the outside of the house.

Try to leave a female slip fitting at the end of your pipe run.  If not, you can easily use a coupler.