Lennox Industries Inc.

David Michael Wynnick

Timothy Grant Weigel

Stephen A Walter

Christopher Whitesides

Richard A Mauk

Mark G Beste

Roger C Hundt

Mark D Hess

Erroll L Eaton

David Omlor

Brian R Hudson

Corrine Anne Hudson

Brian Hudson

A system for securing at least two heating, ventilation, and air conditioning units stacked on each other for transportation includes corner brackets on at least the four corners of the lower unit and between the units. Each corner bracket has a banding channel, a plank-receiving channel, and a plurality of protrusions on a top side. The brackets are banded in place using the banding channels. On each longitudinal side, planks are used to extend between corner brackets to help control the loads and to distribute the loads. The corner brackets may be made from a synthetic material and the planks from wood or wood-like material. Other aspects are disclosed.

Stacking brackets and systems for rooftop HVAC units

An HVAC unit includes an HVAC motor and a system controller. The HVAC motor is coupled to a motor controller. The motor controller is configured to receive a command signal bearing a digitally encoded operating level of the HVAC motor. The system controller is coupled to the motor controller, and is configured to transmit the command signal to the motor controller. The system controller modulates the command signal with the digitally encoded operating level in response to a service demand.

Variable speed motor control method and apparatus

The present invention provides an apparatus for supporting stacking of a top heating, ventilation, and air conditioning (HVAC) unit on top of a bottom HVAC unit. The apparatus includes a base member configured to mount to a top cover of the bottom HVAC unit. The base member comprises an upper base portion with a top surface configured to receive at least a portion of a base rail of the top HVAC unit. The apparatus further comprises a stacking insert extending away from the base member. The stacking insert has one or more sloped surfaces extending above the top surface of the upper base portion. The top surface extends from a base of the one or more sloped surfaces in a plane substantially parallel to the top cover, when the base member is mounted to the top cover of the bottom HVAC unit.

Stacking bracket

The present invention provides for an apparatus for supporting stacking of a top heating, ventilation, and air conditioning (HVAC) unit on top of a bottom HVAC unit. The apparatus includes a base member configured to mount to a top cover of the bottom HVAC unit. The base member comprises an upper base portion with a top surface configured to receive at least a portion of a base rail of the top HVAC unit. The apparatus further comprises a stacking insert extending away from the base member. The stacking insert has one or more sloped surfaces extending above the top surface of the upper base portion. The top surface extends from a base of the one or more sloped surfaces in a plane substantially parallel to the top cover, when the base member is mounted to the top cover of the bottom HVAC unit.

An airflow managing system for monitoring airflow of a HVAC system, a HVAC system and a method of monitoring the airflow in a HVAC system is provided. In one embodiment, the airflow managing system includes: (1) an air pressure sensor configured to obtain an air pressure measurement directly from a scroll of an air blower of the HVAC system and (2) a HVAC controller configured to determine an airflow rate for the HVAC system based on the air pressure measurement and corresponding parameters associated with the air blower.

Growing community of inventors

Lewisville, TX, United States of America

David Michael Wynnick