US PATENT SUBCLASS 165 / 217-- .~.~.~.~ Volume flow of discharged air at discharge into zone modulated by zone heating or cooling load (e.g., variable air volume, etc.)

US PATENT SUBCLASS 165 / 217
.~.~.~.~ Volume flow of discharged air at discharge into zone modulated by zone heating or cooling load (e.g., variable air volume, etc.)

Current as of: June, 1999
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165 /	HD	HEAT EXCHANGE

200	DF	WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14}
201	DF	.~ Having heating and cooling capability {13}
205	DF	.~.~ Plural temperature regulators for plural zones {8}
212	DF	.~.~.~ Central temperature conditioned air supplied to each zone {4}
217		.~.~.~.~ Volume flow of discharged air at discharge into zone modulated by zone heating or cooling load (e.g., variable air volume, etc.)

DEFINITION

Classification: 165/217

Volume flow of discharged air at discharge into zone modulated by zone heating or cooling load (e.g., variable air volume, etc.):

(under subclass 212) Subject matter wherein a volume of air from the common supply air source discharged into one of said distinct areas is controlled by a means which regulates air flow responsive to the difference between a set point temperature and a measured temperature of the distinct area.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation,

1, for zone control for heating and cooling medium; subclass 1 for heating and cooling control devices; subclass 49.3 for electrically actuated ventilator; and subclass 49.4 for pneumatically actuated ventilator.