I have a site where we are using the S4 integration device to bring a JCI N2 network into Alerton BACtalk. I'm a BACnet guy and know next to nothing about the TEC-1100. I am looking for some adive on how the TEC-1100 really works. I am attaching a quick screen print of 4 units and I canont for the life of me figure out why 3 of them are running and in heat mode. I would appreciate any help that can be given!