I have a 2 yr old Trane RTAC chiller that is currently running as a standalone unit on a Landis/Gyr system. I am getting ready to install a Honeywell Lon based control system. My local Trane office is telling me that they have to install and program the LonTalk option for this chiller. They are wanting 4K+ for this board and programming. I have a feeling that they are trying to hose me. For you Trane guys out there, is this reasonable and correct? If not, how do I get around the local office?