Here's the latest status - we've decided to stay away from building 2 the one with the BCU - as he will have dial up capability and with that he feels it is good enough. We have opened up his eyes for the other buildings though and gave him a lon controls spec.
Now Building 1 -
1 - Intellipak Model SFHFC75EM467C##D6F11ABW00G00L00RT008050
37 - Varitrane VSEF networked boxes
1 - BIC - Part No. X13650576-01 Rev. 6
1 - VAV Programmable Zone Sensor MFG. No. 91K93
1 - Johnson/Penn A419 for discharge air control
From what I am seeing I think I can buy a Lon card for the intellipak - I haven't been able to verify via HMI - and then also buy a t-stat interface to be able to control the unit and get rid of the BIC. The BIC is just 10 DO's. Now my only concern is the communication that goes on via the exisiting Trane network to each of the boxes - is it done via the bic telling it the unit is heating/cooling via the DO's or is there some sort of other communication going on? If there is can I get into that communication? I have called and stopped by my local Trane office and am still waiting for a response from their controls guy. Thanks in advance and for all the input thus far.