Patent ID: 6929057

Claim:
In combination: a furnace module having a furnace module interior and a furnace module outlet opening in air-flow communication with said furnace module interior; an evaporator coil module having an evaporator coil module interior and an evaporator coil module inlet opening in air-flow communication with said evaporator coil module interior; an adaptor module connected to and disposed between said furnace module and said evaporator coil module having an adaptor module inlet opening adjacent to said furnace module outlet opening and in air-flow communication therewith for receiving air from said furnace and an adaptor module outlet opening adjacent to said evaporator coil module inlet opening and in air-flow communication therewith for introducing air received by said adaptor module from said furnace module into said evaporator coil module through said evaporator coil module inlet; air seal structure surrounding said adaptor module inlet opening and said adaptor module outlet opening and disposed between said adaptor module and said furnace module and between said adaptor module and said evaporator coil modules; securement structure including a plurality of tensioned securement straps extending between said furnace module and said evaporator coil module exerting forces on said furnace module and on said evaporator coil module continuously urging said furnace module and said evaporator coil module toward one another whereby said furnace module and said adaptor module apply opposed compressive forces on said adaptor module to maintain said adaptor module under compression between said furnace module and said evaporator coil module and in a predetermined position relative thereto, and whereby said air seal structure is simultaneously compressed between said adaptor module and said furnace module and between said adaptor module and said evaporator coil module, said adaptor module including a first adaptor module component having a first plate defining said adaptor module inlet opening and a second adaptor module component having a second plate spaced from said first plate defining said adaptor module outlet opening, said first adaptor module component and said second adaptor module component being releasably connected to one another to selectively allow either of said first and second adaptor module components to be replaced to adapt to different sizes of furnace module outlet openings and evaporator coil module inlet openings; and a gasket between said first and second plates and surrounding said adaptor module inlet opening and said adaptor module outlet opening, said casket being compressed between said first and second plates to substantially prevent leakage of air passing between said adaptor module inlet opening and said adaptor module outlet opening.