Damper control in space heating and cooling

Abstract

An amount of time that air has been delivered from an air handler to a space is tracked, and based on the tracked amount of time, at least one turn-on time or one turn-off time of the delivery of air from the air handler to the space is controlled. Other features relate, among other things, to controlling a replacement air vent, and to user interfaces.

1 - 46 . (canceled)  
   
   
       47 . A method comprising 
 issuing a vent signal to open a vent that regulates delivery of replacement air to an air handler, and    in connection with the issuing of the vent signal, issuing a fan signal to turn on a circulating fan of the air handler.    
   
   
       48 . The method of  claim 47  in which the fan signal turns on the fan independently of a thermostat that controls the air handler.  
   
   
       49 . The method of  claim 48  in which the fan is turned on using a relay.  
   
   
       50 . A medium bearing instructions to cause a machine to 
 issue a vent signal to open a vent that regulates delivery of replacement air to an air handler, and    in connection with the issuing of the vent signal, issue a fan signal to turn on a circulating fan of the air handler.    
   
   
       51 . Apparatus comprising 
 a controller to issue a vent signal to open a vent that regulates delivery of replacement air to an air handler, and    in connection with the issuing of the vent signal, issue a fan signal to turn on a circulating fan of the air handler.    
   
   
       52 - 81 . (canceled)