Lochinvar CW 745, CW 645 manual CW-DG-05 Revised CW-DG-051/07, 4/09-Printedin U.S.A

Models: CW 645 CW 745

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Lochinvar Corporation • Lebanon, TN • 615-889-8900 / Fax: 615-547-1000

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Contents

DESIGNER’S GUIDE COPPER-FIN WATER HEATER 4 9 5 , 0 0 0 - 2 , 0 6 5 , 0 0 0 B t u / h rDear Specifier/Project Manager Table of Contents Appendix A Water Heater Piping DiagramsFigures & Tables Index Lochinvar CODESLOCATION OF UNIT oPlacement of Cold WaterSPECIAL LOCATION OUTDOOR USE Lochinvar FLUE PRODUCTS VENTCOMBUSTION & VENTILATION AIR VENTING CONTAMINANTSLochinvar GeneralVent Terminations VENTING OPTIONS LochinvarConventional Venting Barometric DampersOUTDOOR INSTALLATION Masonry ChimneyGAS SUPPLY Freeze Protection Outdoor InstallationLochinvar WATER CONNECTIONS High Altitude ApplicationsInlet and Outlet Water Connections LOW WATER TEMPERATURE DELIVERY WATER VELOCITY CONTROLPUMP OPERATION LochinvarWATER TREATMENT Water Flow SwitchELECTRICAL REQUIREMENTS LochinvarNorth America Relief ValvePIPING DIAGRAM WAT E R H E AT E R P I P I N G D I A G R A M SA P P E N D I X A L E G E N DPIPING DIAGRAM L E G E N DSINGLE HEATER - TWO TANK PIPING DIAGRAM L E G E N DCHECK VALVE RELIEF VALVE MIXING VALVE INLET OUTLETPIPING DIAGRAM L E G E N DTWO HEATERS-SINGLETANK LIT0138PIPING DIAGRAM L E G E N DTWO HEATERS-TWOTANKS PIPING DIAGRAM LIT0396Heater Heater InletPage CW-DG-05 Revised CW-DG-051/07 4/09-Printedin U.S.A