Designing heat pump heating and cooling using a 4 way valve

[uuxxis]

I want to design a heat pump using 4way valve for heating and cooling. but I'm still confused for the installation of piping system. I use components such as compressors, Condensor, txv, two evaporator coil for heating and cooling, and other additional components.
there who know for drawing piping system installation?

Thanxs..

[nike123]

http://i49.tinypic.com/2hmgg8l.jpg

[echotsang]

would u pls tell me ur msn id? i would like to learn something from u and show u one simple system drawing....i don't konw how to upload the image here...:confused: