Matches 1 - 5 out of 5
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4381075 Microprocessor based controller for heating system  
An integrated, microprocessor-based primary control system for a building heating system. The control system includes in one unit a microprocessor and associated circuitry for (1) establishing the...
3694625 CONTROL ARRANGEMENT FOR AN AIR HEATING APPARATUS  
An improved control arrangement for an air heating apparatus having a multi-volt electrical power source, a power control circuit for energizing air blower means and air heating means, and a safety...
3519204 TEMPERATURE CONTROL APPARATUS  
2797050 Remote adjustment of automatic control system  
2782993 Automatic control system with remote adjustment  
Matches 1 - 5 out of 5