Patent ID: 6155341
Filing Date: 2000-12-05
Classification: F24F,Y02B,Y10S

Abstract:
A method for use with a heating and/or cooling system including a blower fan, a blower motor for driving said blower fan, said blower motor having at least one heating speed and a cooling speed, a thermostat having a mode selector switch which has a heating position associated with a call for heating, a cooling position associated with a call for cooling, and an off position, said thermostat also having a fan switch that has a ""fan on"" position associated with running said blower fan at a continuous fan speed and an auto position associated with running said blower fan at one of said at least one heating speed and cooling speed, and a controller connected to said thermostat for generating a speed select signal for use in setting the speed of said blower motor, comprising:providing said controller with a stored program that:(a) when there is no call for heating or cooling at said thermostat, causes said controller to recognize predetermined changes in the position of said fan switch as requests for changes in said continuous fan speed;(b) defines a plurality of different values for said speed select signal, said different values corresponding to different respective ones of said at least one heating speed and cooling speed; and(c) responds to said requests by changing the speed select signal which is generated when said fan switch is in said ""fan on"" position, thereby changing said continuous fan speed.