Patent ID: 6881055

Claim:
A control system for a fluid fuel burner supplying heat to an enclosure, said system including: a) a temperature sensor mounted within the enclosure for sensing the temperature within the enclosure and providing a temperature signal encoding the temperature within the enclosure; b) a first fuel valve for controlling flow of fuel from an inlet port to the fuel burner, and having at least first and second preselected fuel flow rates responsive to first and second states of a fuel rate signal respectively, said second fuel flow rate higher than the first fuel flow rate, said first fuel valve including a regulator mechanism active while the first preselected fuel flow rate exists; c) a controller receiving the temperature sensor signal and a set point temperature signal encoding a set point temperature value, for providing to the first fuel valve the fuel rate signal having the at least first and second states thereof as a function of the temperature encoded in the temperature sensor signal and the set point temperature value; and d) a keypad functioning as a manually operable temperature entry device accepting human input specifying a set point temperature and providing a set point temperature signal encoding the specified set point temperature.