System and method for controlling air quality in a room

A system for controlling air quality within a room, the system comprising:

• a damper for controlling an amount of a first type of air originating outside the room to be combined with a second type of air originating inside the room to form an air mixture;
• an air pathway to which the damper is coupled, and within which the first and second types of air are combined to form the air mixture;
• a coil assembly including a coil that is positioned within the air pathway and a valve that controls an amount of heat transferred with respect to the coil, the coil affecting a temperature of the air mixture before the air mixture is output to the room as discharge air;
• and
• a controller coupled to the damper and to the valve, the controller providing first and second control signals respectively thereto,
• wherein the controller operates in at least a first state and a second state, wherein in the first state the first and second control signals are varied to allow for the control of both an air temperature and a carbon dioxide level within the room, and in the second state the second control signal is maintained at a fixed level.

A system for controlling the air quality within a room, the system comprising:

• a first means for regulating an amount of air being added to the room;
• a second means for influencing the temperature of the air being added to the room;
• and
• a third means for controlling the operation of, and coupled to, the first and second means;
• wherein the third means operates in at least a first control state and a second control state, wherein in the first control state the third means can control the first and second means so that both a temperature of the air within the room and a carbon dioxide level within the room are within desired ranges, and wherein in the second control state the third means can control the first means so that at least the temperature of the air within the room is within a desired range.