Few questons are still unclear for me.
1) how to link AE and PA?
AE has two 4-pin connectors aquabus
http://forum.aquacomputer.de/images-ac/ae5_lt.jpg
and PA has one (or two?) 3-pin connectors
http://img845.imageshack.us/img845/9264/93157081.png
Do I need special cable or I may make it myself from common fan cable?
2) How to connect two PAs and AE? PA no.2 connect to PA no.1, and PA no.1 connect to AE?
3) If I have flow and temp sensors connected to PA no.1, will it be seen as common sensors in aquaero, so I could program PA no. 2 depending of sensors connected to PA no.1?