single zone in floor radiant, need some help

[firecaptain]

does anyone out there know where i can find some diagrams online for the layout of a single zone radiant heat system. right now i have forced air from the boiler and want to(or at least thinking about) changing to in floor radiant and eliminating the forced air system. i would have 4 runs of tubing to install, so i would need a manifold, but unsure how this all works. i currently have a wilo pump. would i need 4 pumps for this system? help
thanks...

 

[jebatty]

Here is one industry/supplier source that provides pretty good information to start with: Watts Radiant.

 

[Hunderliggur]

The Radiant Company is also a good source.