[.ca] Quick & Basic Hydronic Controls: A Contractor's Easy ... (ISBN 0967256410)

Too basic to be of use:
I was very disappointed in this book. It says right on the front cover that it's "A Contractor's easy guide to hydronic Controls, Wiring, and Wiring Diagrams". If a contractor needs to refer to this basic of information, I don't think I want them working in my house. I learned everthing in this book in High School. Don't waste your time unless you have no idea about how electricity works