Direct Connection options in .NET

I'm integrating a ZD420 to our point-of-sale system for printing labels; we really don't want to take a huge dependency tree and installer overhead on the Link-OS SDK (200+ megs, no thank you?) just to send a small packet of ZPL to a printer.

Is there documentation showing how to connect directly via TCP/IP and do basic status and communication conversations with the printer?

Thanks!