We have been taking care of a building for a while that has an old delta controls system in it (around 11 years old). I never really cared how the system works until a few months ago. This building is not very big, it has a basic water source heat pump system in it. First of all what I cant figure out is what protocol is being used. I always thought that delta was one of the first companies to utilize bacnet and I always thought that these controllers in this building were bacnet. The orcaview software on the workstation even has bacnet information in it. However, in the mechanical room there is a big circuit board (DBB 060) that has lonworks printed on it. There are also thermostats controlling the heat pumps (DAC-252-100-G1A) but I cant find any bacnet or lonworks logo on them. What Id like to know is can a Jace be put on this network to replace the orcaview osw? If it can what driver/protocol would be used? I took a couple pictures so im hoping this will make sense to someone else.