SECTION 15589
HYDRONIC SYSTEM WATER TREATMENT
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes water-treatment systems for the following:
1. Heating, hydronic piping (closed-loop systems) (Note: Cleaning & Treatment is for Bldg 90)
1.2 CHEMICAL FEED SYSTEM DESCRIPTION
A. Closed-Loop System (Hydronic Hot water Piping system):
1. Test existing Hydronic System water once all new Hydronic systems are filled and online.
2. Introduce chemical treatment through existing bypass feeder when required or indicated by test called for above. Coordinate treatment with Owner.
1.3 PERFORMANCE REQUIREMENTS
A. Maintain water quality for HVAC systems that controls corrosion and build-up of scale and biological growth for maximum efficiency of installed equipment without posing a hazard to operating personnel or the environment.
B. Base chemical treatment performance requirements on quality of water available at Project site, HVAC system equipment material characteristics and functional perfor- mance characteristics, operating personnel capabilities, and requirements and guide- lines of authorities having jurisdiction.
1.4 SUBMITTALS
A. Product Data: Include rated capacities; water-pressure drops; shipping, installed, and operating weights; and furnished products listed below:
1. Chemicals.
B. Field Test Reports: Indicate and interpret test results for compliance with performance requirements. Document system fill volume and quantity and type of chemical treat- ment used in closed loop system. Make recommendations as to periodic testing and treatment program.
1.5 QUALITY ASSURANCE
A. Installer Qualifications: An experienced installer who is an authorized representative of the chemical treatment manufacturer for both installation and maintenance of chemi- cal treatment equipment required for this Project.
B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.
1.6 MAINTENANCE
A. Scope of Service: Provide chemicals and service program for maintaining optimum conditions in the circulating water for inhibiting corrosion, scale, and organic growths in the hot-water piping heating system located in Structure 150. Services and chemi- cals shall be provided for a period of one year from date of Substantial Completion, in- cluding the following:
1. Initial water analysis and recommendations.
2. Startup assistance.
3. Periodic field service and consultation.
4. Customer report charts and log sheets.
5. Laboratory technical assistance.
6. Analyses and reports of all chemical items concerning safety and compliance with government regulations.
1.7 EXTRA MATERIALS
A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements, Coordinate with Owner rep- resentative and existing vendor type and models of equipment that will be used on this project. See Editing Instruction No. 1 in the Evaluations for cautions about naming products and manufacturers.
2.2 CHEMICALS
A. Furnish chemicals recommended by water-treatment system manufacturer that are compatible with piping system components and connected Boiler equipment.
B. System Cleaner: Liquid alkaline compound with emulsifying agents and detergents to remove grease and petroleum products.
C. Closed-Loop, Water Piping Chemicals: Sequestering agent to reduce deposits and ad- just pH, corrosion inhibitors, and conductivity enhancers.
PART 3 - EXECUTION
3.1 CLEANING
A. Provide temporary means of filling, flushing and cleaning the hydronic piping for each structure before engaging connections to district Hydronic system.
B. Utilize temporary connections and temporary pumps & feeders as needed.
C. Demonstrate cleaned and flushed system to Owner’s Representative before activating connections to central district system.
3.2 INSTALLATION
A. Add cleaning chemicals as recommended by manufacturer.
B. As Structures are brought online to central Hydronic system, monitor water quality and chemical treatment levels of central system. Add additional chemical treatment as needed.
3.3 CONNECTIONS
A. Piping installation requirements are specified in other Division 15 Sections. Drawings indicate general arrangement of piping, fittings, and specialties.
B. Install piping adjacent to equipment to allow service and maintenance.
3.4 FIELD QUALITY CONTROL
A. Engage a factory-authorized service representative to perform startup service.
1. Inspect field-assembled components and equipment installation,
2. Inspect piping and equipment to determine that systems and equipment have been cleaned, flushed, and filled with water, and are fully operational before in- troducing chemicals for water-treatment system.
3.5 DEMONSTRATION
A. Review manufacturer's safety data sheets for handling of chemicals.
END OF SECTION
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