Patent ID: 8498748

Claim:
An air conditioning control system comprising: a plurality of building monitoring and controlling devices installed in a plurality of buildings, wherein a plurality of air conditioning facilities are installed in the plurality of buildings, and each building monitoring and controlling device monitors and controls an air conditioning facility in a building in which the building monitoring and controlling device is installed; and a remote controller connected to the plurality of building monitoring and controlling devices through a communication network, wherein the remote controller: acquires operation data on an air conditioning facility from each of the plurality of building monitoring and controlling devices through the communication network; calculates an operation setting value for each conditioning facility based on the operation data; and transmits the operation setting value for the air conditioning facility, through the communication network, to the building monitoring and controlling device which monitors and controls the air conditioning facility corresponding to the operation setting value; wherein each of the building monitoring and controlling devices a) receives the operation data on the air conditioning facility from the air conditioning facility installed in the building in which the building monitoring and controlling device itself is installed, b) transmits the received operation data to the remote controller through the communication network, c) receives the operation setting value for the air conditioning facility from the remote controller through the communication network, and d) controls the air conditioning facility by transmitting the received operation setting value to the air conditioning facility; wherein each of the building monitoring and controlling devices periodically receives the operation data on the air conditioning facility from the air conditioning facility, and periodically transmits the received operation data to the remote controller, and wherein the remote controller periodically transmits the operation setting value for the air conditioning facility to the building monitoring and controlling device which monitors and controls the air conditioning facility corresponding to the operation setting value.