First off - lets consider if your going to continue parking the car next to the planed installation of a coal boiler
- This could be similar to planning the building of a bomb in the garage .
Maybe - It depends
I wouldn't do it but some here think my advice and two dollars wouldn't buy you coffee
So lets move forward and plan a boiler room to isolate the bomb from the boiler - consider a primary secondary piping system - That would give you all the parts you desire from your first post and not be too difficult to retrofit it.
A basic understanding of systems would be your first step to help us advise you
maybe start herehttp://www.heatinghelp.com/article-cate ... /Hot-Water
be sure to catch this onehttp://www.heatinghelp.com/article-cate ... er-Heating
some of these threads would be good to read - some not - http://nepacrossroads.com/search.php?ke ... mit=Search
another good place to read about these systems ishttp://www.hearth.com/talk/threads/prim ... ers.11837/