Zone control apparatus for central heating and/or cooling system

Details Zone control apparatus for central heating and/or cooling system Zone control apparatus for central heating and/or cooling system

1987-02-24

1987-10-27

Tapolcai, William E.

Automatic temperature and humidity regulation

With timing element

Timer other than clock

91 6, 13762412, 13762413, 165 12, 236 49, 417394, G05D 2300

Patent

active

047024127

ABSTRACT:
An improved zone control apparatus having mode selectors which allow a user to select any one of a variety of operating modes for individual fluidically actuated flow control devices. The invention further provides for a smoke damper which upon automatic or manual activation causes all of the flow control devices to restrict flow of conditioned fluid through respective ducts or pipes so as to help minimize smoke contamination and the formation of a "chimney" effect. The invention further provides for the utilization of vibration type diaphragm pumps to create a source of pressure and vacuum, a pressure test device to quickly check the pressure in the apparatus, and a flow indicator for determining the location of leaks in the apparatus.

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