In a heating system, when a high limit opens a predetermined number of times in a single call for heat by the thermostat, the system provides for operating the circulator blower at the cool speed rather than at the heat speed....http://www.google.fr/patents/US5984003?utm_source=gb-gplus-shareBrevet US5984003 - System and method for controlling operation of a multi-speed circulation blower in a heating and cooling apparatus
System and method for controlling operation of a multi-speed circulation ...
