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908.1 General
A cooling tower used in conjunction with an air-conditioning appliance shall be installed in accordance with the manufacturer's instructions. Factory-built cooling towers shall be listed in accordance with UL 1995 or UL/CSA 60335-2-40.
908.2 Access
Cooling towers, evaporative condensers and fluid coolers shall be provided with ready access.
908.3 Location
Cooling towers, evaporative condensers and fluid coolers shall be located to prevent the discharge of vapor plumes from entering occupied spaces. Plume discharges shall be not less than 5 feet (1524 mm) above or 20 feet (6096 mm) away from any ventilation inlet to a building. Location on the property shall be as required for buildings in accordance with the International Building Code.
908.4 Support and Anchorage
Supports for cooling towers, evaporative condensers and fluid coolers shall be designed in accordance with the International Building Code. Seismic restraints shall be as required by the International Building Code.
908.5 Water Supply
Cooling towers, evaporative coolers and fluid coolers shall be provided with an approved water supply, sized for peak demand. The quality of water shall be provided in accordance with the equipment manufacturer's recommendations. The piping system and protection of the potable water supply system shall be installed as required by the International Plumbing Code.
908.6 Drainage
Drains, overflows and blowdown provisions shall be indirectly connected to an approved disposal location. Discharge of chemical waste shall be approved by the appropriate regulatory authority.
908.7 Refrigerants and Hazardous Fluids
Heat exchange equipment that contains a refrigerant and that is part of a closed refrigeration system shall comply with Chapter 11. Heat exchange equipment containing heat transfer fluids which are flammable, combustible or hazardous shall comply with the International Fire Code.
908.8 Cooling Towers
Cooling towers, both open circuit and closed circuit type, and evaporative condensers shall comply with Sections 908.8.1 and 908.8.2.
908.8.1 Conductivity or Flow-Based Control of Cycles of Concentration
Cooling towers and evaporative condensers shall include controls that automate system bleed based on conductivity, fraction of metered makeup volume, metered bleed volume, recirculating pump run time or bleed time.
908.8.2 Drift Eliminators
Cooling towers and evaporative condensers shall be equipped with drift eliminators that have a maximum drift rate of 0.005 percent of the circulated water flow rate as established in the equipment's design specifications.

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