1. Replacement system must utilize the existing Supply and Return Duct/Plenums within the building of the Aquatic Center. Contractor shall be responsible for any and all duct transitions. All ducts shall be constructed, insulated, and sized in accordance with American Society of Heating, Refrigeration, and Air conditioning Engineering (ASHRAE) standards. Pool area shall be ventilated in accordance with ASHRAE 62.1 standards for fresh air. 2. Approved manufacturers of natatorium dehumidification systems are PoolPak, Seresco, Desert Aire, Aaon, Innovent, and Xetex. Any other manufacturer must be preapproved by the City project manager before submittal. 3. Provide cleaning and inspection of existing Supply and Return Duct/Plenums within the building of the Aquatic Center. Any deficiencies or defects must be reported immediately to the City Project Manager. 4. Replacement system must reasonably fit within the envelope of the existing system and not interfere with the existing access to the building nor the surrounding drives or walkways. 5. The operating performance: a. Maintain Pool head space temperature between 80 and 86 degrees F during Fall, Winter, and Spring months. b. Maintain Pool head space Relative Humidity between 40 and 60%. c. Maximum Supply Volumetric Rate between 22,000 and 24,000 cfm. d. Minimum fresh air makeup in accordance with ASHRAE 62.1 of 0.48 cfm/sq ft (7400 cfm). e. Total System Cooling and Heating Capacity between 744 and 960 MBH with approximately 1.2 MMBH of Auxiliary water heating. f. Able to condense and collect approximately 350 lbs/hr
