Preset timed control for HVAC operation

Details Preset timed control for HVAC operation Preset timed control for HVAC operation

1990-02-06

1991-03-19

Wayner, William E.

Automatic temperature and humidity regulation

With timing element

Timer other than clock

165 12, F23N 520

Patent

active

050003828

ABSTRACT:
A control system for an existing central heating, cooling and ventilating unit (HVAC) in which a conventional plug-in timer and selector controller are employed to by-pass the normal control for the HVAC such that it can be made to operate for a predetermined amount of time regardless of temperature. Operation of the unit for a predetermined amount of time prevents mildew when a housing enclosure or the like is unoccupied without wasting electrical energy as would be the case when the HVAC is under normal control.

REFERENCES:
patent: 3785165 (1974-01-01), Valenzuela, Jr.
patent: 3891144 (1975-06-01), Sadler et al.
patent: 3917165 (1975-11-01), Cross
patent: 4196848 (1980-04-01), Falkenstein

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