Project Snapshot: Beverly Middle School | Thermo-Composite DX Units

Project Name: Beverly Middle School
 Architect: Ai3 Architects
Mechanical Engineer: Griffith and Vary
Mechanical Contractor: PJ Kennedy & Sons
Equipment: 13 Rooftop Units with DX
Manufacturer: Annexair
Size: 5,700, 5,100, 6,800, 5,400, 4,500 5,600, 6000, 6,300, 5,750, 4825, 4,700, 6,600, 7,800 CFM
DAC Sales Engineer: Pat Will

Project Overview:

The City of Beverly embarked upon an exciting and much-needed effort to design and construct a new middle school to give students a learning environment enriched with the tools necessary to provide the highest quality educational experience.The project included construction of a new 231,509 SF, 1,395 student middle school serving grades 5 through 8. The project included a 4-story classroom core with each floor dedicated to one grade and a common outdoor learning area. The project included a 535 seat auditorium, a 352 seat cafeteria on the first floor for grades 5 & 6 and a 352 seat cafeteria on the third floor for grades 7 & 8, a gymnasium, classrooms, media center and administration spaces.

HVAC Highlights:

  • Hot Water Coils
  • DX Coils
  • Enthalpy Wheels
  • Thermo-composite panel system

The units at the Beverly Middle School were supplied by Annexair and incorporated their Thermo-composite panel system.  The design looked for replacement units that would weigh the same as original and provide 30% more capacity.  Weight was a key design factor.  The Annexair units are 30% lighter than traditional steel units, so we were able to satisfy the design criteria with a lighter unit.  Additionally, the units come with a lifetime warranty against corrosion.  Best of all they are the same cost as traditional steel units.

Outdoor units have a rain gutter above each access door and a watertight roof shall be provided with a

white TPO UV-reflective membrane. Units have the entire exterior finished with a PVDF coating designed for UV resistance. Panels needed to pass ASTM B117 3000-hour salt fog resistance test and ASTM D4585 3000-hour moisture condensation resistance test. In addition, the paint needed to meet AAMA 620-02 standard for color, chalking, gloss retention, and abrasion resistance. The air handler unit casing was provided with a lifetime warranty against corrosion resistance under normal use.

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