without going into to much detail
PDF Files are essentially scaled down EPS (encapsulated postscript) files.
Postscript is a type of mathematics used by printers to establish what marks go where when imaging.
Predominately, most home computer users have "Quickdraw" inkjet printers - basically a simplified printing method which is WYSISYG - what you see on screen is what gets printed on the page, scaled to fit.
Even if you were to open the Acrobat file in a vector based drawing program like Adobe Illustrator, Macromedia Freehand or even Corel draw you still would not be able to "tile" it over multiple pages because your printer could simply not handle the mathematics.
If you really wanted to avoid any cost you could always give the file to someone who has a postscript laser printer for output to multiple tiled pages.
There are some software RIP's (raster image processors) available to emulate postscript on quickdraw printers - but they could cost more than the $2.50 for a plan printing shop to run it out at 100% for you - hell pay another couple of bucks and they can laminate it
anyway that's my two bobs worth