Inexpensive, but a single large format diagram of exactly where all of the connections go would have gotten them 5 stars. Each different manufacturer uses a different arrangement. All it takes is a single tube that is not clearly defined to cause a big delay in installation. This one has a short tube dangling. Will it leak? Where does it go?
When converting from one system to the next, having common terminology and a photo larger than 2" high would be a blessing.