DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

B. Install thermometer wells in vertical position in piping tees where thermometers are indicated.Install wells with stem extending to center of pipe. Extension necks shall suit insulation thickness.Fill wells with oil or graphite and secure caps.3 .8 PIPE EXPANSION GUIDES, AND ANCHORSA. Install piping with provisions for expansion and contraction using expansion offsets as indicated.Provide for expansion and contraction in mains, risers, and runouts.B. Install guides to properly direct pipe movement into expansion offsets.C. Install anchors to control movement in piping. Braze or clamp anchors to piping. Install pipeanchors at intermediate points in pipe runs between expansion offsets.D. Connect risers to mains with at least 5 pipe fittings including tee in main. Connect risers toterminal units with at least 4 pipe fittings including tee in riser.3 .9 STRAINERSA. Install strainers on supply side of inline pump and as indicated. Install nipple and ball valve inblow down connection of strainers 2-inch and larger.3 .10 EXPANSION TANK AND AIR SEPARATOR INSTALLATIONA. Install tanks as shown; locate appurtenances for easy servicing.B. Install gate valve and union on air separator drain to facilitate removal of strainer. Routedischarge on air separator to nearest drain.C. Check expansion tank after cleaning, testing, and filling of system to ensure system is completelyfull.D. Provide bracket supports, saddles, and hangers to support tanks.E. Install air separator level in both directions, supported from structure so that all pipe can beremoved without moving tank.F. Charge expansion tank with proper air charge before pressurizing water side of system.3 .11 CHEMICAL FEEDERA. Install feeder in upright position with top of funnel not more than 48-inches above floor. Pipedrain, with ball valve, to nearest equipment drain. Install piping adjacent to equipment to allowservicing and maintenance.3 .12 CLEANINGA. General: Ensure system is operational, filled, started, and vented prior to cleaning. Place terminalcontrol valves in open position during cleaning. Add cleaning chemicals as recommended bymanufacturer.B. Hot Water Heating System: Apply heat while circulating, slowly raising system to designtemperature; maintain for a minimum of 24 hours. Remove heat and allow to cool; drain and refill15500-8HYDRONIC SYSTEMS