This bid is for HVAC unit replacements at Arundel Mills Campus, 7009 Arundel Mills Circle, Hanover, Maryland 21076, and the Center for Applied Learning and Technology, 101 College Parkway, Arnold, Maryland 21012-1895.
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What the job is
ET.
Rooftop units: Replace RTU-1 and RTU-4, each approximately 15,930 lbs. RTU-1: 33,500 CFM, 1,131.2 MBH cooling, 380 MBH hot-water heating. RTU-4: 27,000 CFM, 1,122.2 MBH cooling, 414.1 MBH hot-water heating. Both: 460 V, 3-phase, 60 Hz; R-454B with factory leak detection and mitigation. Basis of design: Trane SLHRC904.
Makeup air unit: Replace MAU-1 serving atrium smoke evacuation: 4,000 CFM supply/outdoor air, 1.0-inch external static pressure, 300 MBH gas input/243 MBH output, 460 V, 3-phase, 60 Hz; approximately 1,000 lbs. Basis of design: Trane GRAA. Reuse the roof curb with an adapter as needed.
Installation: Include equipment, demolition/disposal, crane/rigging, permits and required FAA approvals, mechanical/electrical connections, ductwork and piping modifications, controls, fire alarm integration, restoration, startup, training, and NEBB- or TABB-certified testing and balancing.
Equipment and integration: Approved manufacturers: Carrier, Innovent, Trane, and York. Integrate with the existing Niagara Tridium BAS through Smart Building Technologies; use Johnson Controls/Simplex for CALT fire alarm integration. Roofing must use Cole Roofing, Ruff Roofers, Citiroof, or Tecta America and preserve the roof warranty.
VAV options: Separately price reheat-coil additions for an estimated 14 VAVs and replacement with reheat-equipped units for an estimated 50 VAVs; quantities are not guaranteed.
Pricing and schedule: Provide separate standard-rate and prevailing-wage pricing, proposed equipment models and lead times, and a two-year parts-and-labor warranty. Site work is tentatively scheduled for May 24, 2027, with substantial completion August 1 and final completion August 15, 2027.