After having a series 5 installed in Apr 14, and waiting for WF to release their AWL (Aurora Web Link) board, I got tired of waiting and REVERSE engineered some of the protocol. I have made attempts to contact WF about their protocol and have been met with the same resistance. My system is using a small linux computer with a $3 USB->RS485 adapter and is plugged in the front of the WF unit. I have been monitoring the temps/pressures/energy usage now for about a year, displaying that information on a website and archiving for baseline performance. The protocol is basic ModBus using a "user-defined" function 0x41. Most responses are simple and I have put together a variable map (at least for the monitoring side of things). PM me if anyone is interested.