I have a Culligan reseverse osmosis H-30S. It was hooked up in my house when I bought the house and it worked fine. I removed it due to some reno's and now am re installing it however the Culligan user guide is terrible and doesn't explain much. What I need to know is my Culligan faucet has 3 hose inputs. I need to know which one goes where, what area the drain hose comes from. Ideal is a diagram/picture explaining it.

Anyone able to help?