1. Slide the ferrule nut onto the tube past the groove.
2. Insert the grooved tube end into the integral ferrule until it bottoms out.
3. Slide the ferrule nut to the fitting and hand tighten.
4. Pull on the tubing slowly until the ferrule catches on the grooved edge.
5. Ensure the fitting is hand tight.
6. Tighten the ferrule nut with a wrench. Do not overtighten.