Interactive electronic thermostat with minimum and maximum tempe

Details Interactive electronic thermostat with minimum and maximum tempe Interactive electronic thermostat with minimum and maximum tempe

1991-08-27

1992-11-10

Ford, John K.

Heat exchange

Regenerator

Checker brick structure

165 111, 165 12, 165 26, 236 94, 236 46R, F25B 2900, F25B 4900

Patent

active

051616068

ABSTRACT:
An interactive electronic thermostat operates to communicate with an installer through an audible or visual display and keypad to instruct the installer to perform tasks and enter observations to effect proper connections at the thermostat of heater/air conditioner wires in spite of the absence of labels identifying the functions of those wires. The thermostat requires entry of coded indicia representing operator-observed conditions in the system in response to displayed instructions carried out by the operator. Control circuits are automatically assigned functional tasks in response to the operator-observed conditions entered into the system. Different program routines are invoked depending upon the number of system wires and the type of heater/air conditioner being controlled. Under appropriate circumstances, messages are displayed informing the operator/homeowner that the thermostat is incompatible, or has no advantageous use, with the heater/air conditioner. In one embodiment the installer need only connect the wires to the thermostat terminals one time; the thermostat configures its internal connection paths in response to installer-entered indicia to assure proper control of the system. Another embodiment incorporates a safety backup system to automatically activate the HVAC system in the event that normal operation of the thermostat is interrupted and the temperature in the conditioned area falls or rises beyond a predetermined range.

REFERENCES:
patent: 4431134 (1984-02-01), Hendricks et al.
patent: 4725001 (1988-02-01), Carney et al.
patent: 5065813 (1991-11-01), Berkeley et al.

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