Wow, thanks Piedmont. You have really helped me out. As I had mentioned, I had posted another thread in the HVAC area but have not gotten much traction on it. I think I have closed it down properly. I'm pasting the description of our HVAC from there to here:
I live in a condo complex that was built in the 70's and works by using what seems to be a very unique method. Water is circulated through a series of pipes into all the condos, these pipes feed into a galvanized metal box which houses a large blower motor (GE 5ksp39mg 6162AT). The pipes run through a radiator. Hot or cold water runs through this setup depending on the season. When the thermostat senses a certain temperature in the living space, it turns the blower motor on, which draws living space air through the radiator, heats it up or cools it down, the air then passes into the hvac ducts which feed into the rooms. The thermostat keeps the motor running until the desired temperature is reached and then it shuts off power.
The thermostats are line-level.
I've spoken to Honeywell, White-Rodgers and all the different thermostat companies that make some of the thermostats we use in our condos.
Here is the PDF for my thermostat. I think ours is called a "Fan-Coil system".
They all say that they don't make a line-level programmable thermostat for Fan-Coil systems.
If this is the case, I'm wondering what it would take to add in millivolt thermostats, and would even they work since this setup is just opening and closing the power feed back to the fan blower unit.