I am looking for a multi-zone controller/building automation system for a small commercial project - 6 heating zones, 1 boiler.
Goal - upgrade existing 6 low volt simple non-programmable tstats, each 2 wire, which connect to a 6 zone relay panel for 6 hot water zone isolation valves, to a new computerized system where all programming can be done centrally (day/night setpoints, etc) - where each zone would have a sensor in the airspace telling the central system the temp in the airspace. Perhaps ability to do a user override at the zone sensor.
The existing zone relay panel can remain where the new system simply "opens" and "closes" the tstat terminals on the old panel for the 6 zones, or the new system could control the 6 zone isolation valves (4 wire valves) directly, and then also must turn on the boiler with a N/O relay output.
The boiler's internal processor handles the circulation pumps and BTU input/output required for the input/output water temp... No need to reinvent that wheel at this point.
In other words - instead of setting 6 tstats, making sure all 6 have the same time on them, making sure each setpoint is correct - having a single system to program.
This is going to be for a LEED certified project, thus there is a goal by the owner to have a nice automation system, yet the project is small enough a full fledged automation system is probably going to be out of the budget.
1) All tstats report to a central system where day/night/weekend setpoints are controlled.
2) Central system has necessary programming ability.
Optional items that would make the system more desireable:
1) Networkable to computer(s) so building managers/maintenance can change programming or monitor temp/system hours/other data metrics.
2) Outside air temp sensor that would alter setpoints (turn on heat in zones an hour earlier when it is very cold outside for an example)
3) Current temp, setpoint temp, and manual override on each zone sensor where the central system enforces rules (no 95 degree heat setpoint, overrides last X hours, etc)
Any recommendations on systems I should consider for this customer? Manufacture and model?