Advanced Distributor Products LLC

Timothy Orr

Dae-Hyun Jin

James Frank Timbs

John Lawson Bauer, Jr

Michael Gurz

Ron Fisher

Austin Mitchell Meminger

James Timbs

A method of operating a HVAC system is provided. The method includes removing heat from a working fluid using an evaporator and a blower that moves airflow across the evaporator. The method includes measuring at least one gas property value of a fluid surrounding the evaporator using a leak detection sensor. The method includes determining a control setpoint for a maximum allowable concentration of working fluid in the fluid surrounding the evaporator, where the control setpoint corresponds to a gas property value associated with a threshold percentage of a lower flammability limit of the first refrigerant in air at the operating temperature. The method includes determining that the at least one gas property value of the working fluid exceeds the control setpoint. If exceeded, the method includes closing a value that regulates the flow of working fluid to the evaporator and initiating the blower to move airflow across the evaporator.

HVAC system and methods of using the same for leak detection

A method and system are described for a refrigerant distributor, and for attaching the distributor tubes to an evaporator coil. A short tube can inserted into the bell end of a tube and the hell end can be crimped around the short tube to lock it into place. The short tube preferably has a bead or widened shaft around which to crimp the bell. The disclosure is particularly beneficial for aluminum based components because aluminum is more susceptible to blockages or leaking due to problems from brazing.

Refrigerant distributor for aluminum coils

A method and system are described for a refrigerant distributor, and for attaching the distributor tubes to an evaporator coil. A short tube can inserted into the bell end of a tube and the bell end can be crimped around the short tube to lock it into place. The short tube preferably has a bead or widened shaft around which to crimp the bell. The disclosure is particularly beneficial for aluminum based components because aluminum is more susceptible to blockages or leaking due to problems from brazing.

In certain embodiments, a controller turns a heat pump system on in heating mode or cooling mode and determines a position for the heat pump system's reversing valve based on an O/B setting. The O/B setting indicates to configure the reversing valve in a first position that causes refrigerant to flow in a first direction when in heating mode and in a second position that causes the refrigerant to flow in a second, opposite direction when in cooling mode. The controller determines whether to maintain or reverse the O/B setting. If the heat pump system heats while in the heating mode or cools while in the cooling mode, the O/B setting is maintained. If the heat pump system cools while in the heating mode or heats while in the cooling mode, the O/B setting is reversed.

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Dunwoody, GA, United States of America

Timothy Orr