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Grand Hyatt

AHU-18 replacement and AHU-16 & 17 restoration. Grand Hyatt. AHU-18 replacement. The existing AHU-18 was approximately 30 years old and in need of replacement. The exterior casing and internal components had deteriorated beyond the point of repair.

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Grand Hyatt

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  1. AHU-18 replacement and AHU-16 & 17 restoration Grand Hyatt

  2. AHU-18 replacement • The existing AHU-18 was approximately 30 years old and in need of replacement. • The exterior casing and internal components had deteriorated beyond the point of repair. • The existing unit was not designed to accommodate proper service and the hydronic coils had frozen and burst. • Host Properties and Southland Industries selected Air Cleaning Technologies, Inc. (Integrated Systems Division) as the replacement AHU-18 manufacturer.

  3. Old AHU-18 Old AHU-18 casing with single wall construction and internal insulation. New AHU-18 casing with foam filled “no thru metal” double wall casing.

  4. AHU-18 fans Old DWDI fan with external isolation New SWSI plenum fan with internal isolation

  5. AHU-18 chilled water condensate pans Old pans with no slope and deteriorated soft metal New seam welded stainless steel pans with double wall sloped construction.

  6. All concrete floors coated with immersion grade Belzona 5811 sealant • Filter section • Fan inlet section

  7. AHU-18 removal and installation All old and new material had to be rigged through a 40” x 40” access hatch Old coils being removed

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