I'm trying to plan a radiant floor heating system for my house (built in 1912). I am basically redoing the entire house top to bottom so I figure I might as well change from radiators to radiant heating. I understand the concepts and have read everything I can find on it. I'm looking for a good book though that discusses the topic in depth. Any ideas?

Check out "Pumping Away" by Dan Holohan. Actually, just about anything by Mr. Holohan is worth diving into! Great no nonsense writer, and respected in his field.