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Southern Human Services Center Smith Sinnett /2020072 <br />HVAC and Roof Renovations Orange County,North Carolina <br />HVAC Water Treatment 23 25 00 - 2 <br />8.Ryznar Index >6.0 <br />9.Suspended solids <10 micron <br />10.Bacteria Counts <br />a.Total aerobic bateria counts <100 cfu per mL <br />b.Total anaerobic bacteria counts <10 cfu per mL <br />1.06 DESIGN CRITERIA <br />A.Chemicals shall be suitable for pipe material,fluid medium,and inteded treatment. <br />B.Provide initial chemical treatment and equipment for all systems based on complete system fluid <br />analysis including makeup water prior to installation. <br />C.Initial supply of chemicals for treatment of each system shall be sufficient for start up and testing <br />period,for the time the systems are operated by the Contractor for temporary heating and cooling, <br />and for one year after start-up of system. <br />PART 2 PRODUCTS <br />2.01 MANUFACTURERS <br />A.AmSolv-Amrep,Inc <br />B.Aqua-Chem <br />C.Aqualine <br />D.ChemTreat <br />E.GE Water &Process Technologies <br />F.Water Guard <br />G.Nalco Company <br />H.Or Approved Equal <br />2.02 MATERIALS <br />A.System Cleaner: <br />1.Liquid alkaline compound with emulsifying agents and detergents to remove grease and <br />petroleum products;sodiumtripoly phosphate and sodium molybdate. <br />2.Biocide chlorine release agents such as sodium hypochlorite or calcium hypochlorite or <br />microbiocides such as quarternary ammonia compounds,tributyltin oxide,methylene bis <br />(thiocyanate). <br />B.Closed System Treatment (Water): <br />1.Sequestering agent to reduce deposits and adjust pH. <br />2.Corrosion inhibitors;boron-nitrite,sodium nitrite and borax,sodium totyltriazole,low <br />molecular weight polymers,phosphonates,sodium molybdate,or sulphites. <br />3.Conductivity enhancers;phosphates or phosphonates. <br />2.03 BY-PASS (POT)FEEDER <br />A.Reuse existing <br />PART 3 EXECUTION <br />3.01 PREPARATION <br />A.Systems shall be operational,filled,started,and vented prior to cleaning. Use water meter to <br />record capacity in each system. <br />B.Place terminal control valves in open position during cleaning. <br />C.Verify that electric power is available and of the correct characteristics. <br />D.Coordinate mobilization and sequencing of Work with Phasing Plan. <br />3.02 CLEANING SEQUENCE <br />A.Concentration: <br />1.As recommended by manufacturer. <br />DocuSign Envelope ID: 94E7997D-4F29-42F6-A9B4-0A160438D2A6