Abstract: An air supply system and a method for controlling operation of an air supply system for supplying a conditioned air flow at a setpoint air temperature to a climate controlled space.

Abstract: An air supply system and a method for controlling operation of an air supply system for supplying a conditioned air flow at a setpoint air temperature to a climate controlled space are disclosed.

Abstract: A method for interpreting input on a X input multi-stage HVAC & R system to control Y stages of the system wherein Y is greater than X, including the steps of receiving input from X inputs; translating the input into a binary system having Y binary outputs; and controlling the system based upon the binary outputs.

Abstract: A method and system for staging the cooling effect of an air conditioning unit in which outside air is substantially prevented from passing through the cooling unit for a prescribed time after the cooling function has been initiated.

Abstract: A method and system for staging the cooling effect of an air conditioning unit in which outside air is substantially prevented from passing through the cooling unit for a prescribed time after the cooling function has been initiated.

Abstract: The present invention is a system for controlling the quality of air in a building. The system includes a sensor disposed for sensing the air quality in a building. Upon a sensing of an air quality problem, the system issues a command to draw in additional outside air into the building to alleviate the problem. The issuing of such command can be made conditional on a measurement of outside air temperature. The flow of additional outside air may be limited or avoided altogether where drawing in additional outside air would adversely affect the inside air temperature. Additional air can be drawn into a building, for example, by opening an economizer, activating a fan system, or by increasing a pressure setpoint in a supply air duct.

Abstract: A heater, especially a portable electric space heater, that includes safety features selected from at least one of the following, which may turn off the heater or trigger an alarm or both: motion sensors for determining whether an object is within an unsafe distance of the heater; temperature sensors for determining whether the internal temperature of the heater is rising too fast, or is too much above ambient temperature so that it represents an unsafe condition, or is above a preset safe level.