Lochinvar CW 745, CW 645 Piping Diagram, LIT0396, Heater Inlet, Manifold, Model, Outlet Size

Models: CW 645 CW 745

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PIPING DIAGRAM

MULTI-STACK FRAME W/ WATER HEATERS AND STORAGE TANK

Heater	Heater Inlet/	Manifold
Model	Outlet Size	Pipe Size

CW495-745 2”3”

CW986-2066 2-1/2” 4”

A6	L o c h i n v a r D E S I G N E R ’ S G U I D E C O P P E R - F I N W A T E R H E A T E R 6 1 5 - 8 8 9 - 8 9 0 0

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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 Appendix A Water Heater Piping Diagrams Table of ContentsFigures & Tables Index LOCATION OF UNIT LochinvarCODES oPlacement of Cold WaterSPECIAL LOCATION OUTDOOR USE Lochinvar FLUE PRODUCTS VENTCOMBUSTION & VENTILATION AIR Lochinvar VENTINGCONTAMINANTS GeneralVent Terminations Conventional Venting VENTING OPTIONSLochinvar Barometric DampersOUTDOOR INSTALLATION Masonry ChimneyFreeze Protection Outdoor Installation GAS SUPPLYLochinvar High Altitude Applications WATER CONNECTIONSInlet and Outlet Water Connections PUMP OPERATION LOW WATER TEMPERATURE DELIVERYWATER VELOCITY CONTROL LochinvarWATER TREATMENT Water Flow SwitchNorth America ELECTRICAL REQUIREMENTSLochinvar Relief ValveA P P E N D I X A PIPING DIAGRAMWAT E R H E AT E R P I P I N G D I A G R A M S L E G E N DL E G E N D PIPING DIAGRAMSINGLE HEATER - TWO TANK CHECK VALVE PIPING DIAGRAML E G E N D RELIEF VALVE MIXING VALVE INLET OUTLETTWO HEATERS-SINGLETANK PIPING DIAGRAML E G E N D LIT0138L E G E N D PIPING DIAGRAMTWO HEATERS-TWOTANKS Heater PIPING DIAGRAMLIT0396 Heater InletPage CW-DG-05 Revised CW-DG-051/07 4/09-Printedin U.S.A