Click on this link, then on the side in the Product Details box, click Service manual.
I've got the same model, and its pretty easy to use. For a few years I used it to control my meat smoker. Now I run a PID on it, so the Love is controlling my fridge to to hold fermentation temp as my first stout is bottle conditioning.
In a bind, call Love. They were helpful helping me wire mine (but I did buy it directly from them).