American Standard Inc.

James A Davis

Joe M Baldwin

Merle A Renaud

Richard A Bishop

Doyle R Goodman

The present invention is directed to improvements in servicing the air filters in air conditioning units such as rooftop air conditioning units. More specifically, the invention is directed to an air filter channel and puller which facilitate the removal of rows of filters.

Air filter channel and puller

A method of configuring a controller of an HVAC system comprising the step of configuring the HVAC system based upon components which are indicated by a wiring harness to be physically connected to the HVAC system.

Configuration wiring harness for HVAC controller

An economizer for an air handler, air conditioner or similar unit. The economizer has a first position and a second position. In the first position, the economizer is retracted and presents a relatively flat end surface of the air handler, and in a second position the economizer projects from the air handler and provides for the intake of ambient air into the air handler. The invention provides for the shipment of the economizer intact with the air handler so that installation of the unit is conveniently achieved.

Positionable economizer

A rectangular damper blade rotates about its longitudinal center line between an open and closed position to control the airflow entering an enclosure. Two longitudinal edges of the damper blade become positioned between two inlet edges of the enclosure as the blade rotates to the closed position. The blade is associated with two longitudinal seals. One seal is attached directly to one of the blade's longitudinal edges and provides wiping contact against one of the inlet edges. The other seal is attached to the other inlet edge and provides wiping contact against the blade's other longitudinal edge. Both seals have similar cross-sections to facilitate their interchangeability. And both seals include a flexible lip that extends upstream and perpendicular to the blade to enhance the sealing force and to minimize wiping friction. In the presence of an air pressure differential across the damper blade, the seals urge the blade to the closed position, and when closed, exert a radial sealing force generally parallel to the blade. The configuration of the seals provides a damper that is tolerant of misalignment which makes it suitable for direct drive actuation.

Damper blade seal

An outdoor enclosure for air handling equipment is adaptable to accept add-on air handling equipment by virtue of a two-position cover panel. The cover panel has a generally rectangular shape and is attached to a side panel of the enclosure. The cover panel is selectively mountable in either a vertical position to cover a fresh air opening through the side panel or in an open position to uncover the opening. The cover is opened by pivoting it about its upper horizontal edge which is located just above the opening and swinging its lower edge outwardly away from the side panel. An add-on mist elimination filter is installed in a generally horizontal position betweeen the cover panel's lower edge and the lower edge of the side panel's opening. In the open position, the cover panel serves as a rain sheltering hood over the filter while the opening allows fresh outside air to be drawn into the suction side of a fan located inside the enclosure. The two-position cover panel facilitates the conversion of the enclosure while minimizing the need for special, single-purpose panels.

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Franklin, TN, United States of America

James A Davis