Free old (1918) book on steam, hot water, and others

<span style="text-decoration:underline;">Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances</span> (1918)

<a href="http://archive.org/search.php?query=creator%3A%22Keene%2C+E.+S.+%28Edward+Spencer%29%2C+b.+1864%22">Keene, E. S. (Edward Spencer), b. 1864 (Dean of Mechanics Arts, North Dakota Agricultural College (now NDSU))



Available free at [url=http://archive.org/details/mechanicshouseh00keengoog]http://archive.org/details/mechanicshouseh00keengoog</a>

and at other places (search '"Mechanics of the household" Keene' on Google to find them.  The first few chapters cover steam and hot water heating.