American Water Heater AHCG/HCG3 60T 120 - AHCG3/HCG3 100T 250 6HH0LLQJ9DOYHVRQSDJH

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ONE WATER HEATER, TWO TEMPERATURE WITH HIGH TEMPERAURE LOOP RECIRCULATION WITH BUILDING RECIRCULATION

WARNING: THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES; CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS.

LEGEND

TEMPERATURE & PRESSURE

RELIEF VALVE

PRESSURE RELIEF VALVE

CIRCULATING PUMP

TANK OR LINE TEMPERATURE

CONTROL

DRAIN

FULL PORT BALL VALVE

MIXING VALVE

CHECK VALVE

TEMPERATURE GAGE

WATER FLOW SWITCH

72

TEMPERED

WATER

TO FIXTURES

LINE TEMPERATURE

CONTROL

HOT WATER

OUTLET

TEMPERED WATER RETURN

COLD WATER

SUPPLY

12” TO 15”

MINIMUM

HOT

MIXING VALVE

PIPE T&P TO OPEN DRAIN

HOT WATER

RETURN

EXPANSION

TANK

COLD

LINE TEMPERATURE

CONTROL

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Contents

Installation Operation Service Maintenance Limited Warranty DSSUHFLDWH\RXUFRQ¿GHQFHLQRXUSURGXFWVAmerican Water Heater 7KDQN\RXIRUEX\LQJWKLVHQHUJ\HI¿FLHQWZDWHUKHDWHUTable of Contents Safe INSTALLATION, USE and Service ApprovalsSRWHQWLDOHSRVXUHWRVXFKVXEVWDQFHV KHDWHUVFRYHUHGLQWKLVPDQXDOGeneral Safety Information PrecautionsGrounding Instructions Hydrogen GAS FlammableInstalling, using or servicing Water heater Fire or Explosion HazardPreparing for the Installation Qualified Installer or Service AgencyIntroduction Abbreviations UsedFeatures and Components Basic OperationTOP Views HCG3 120 & 150 ComponentsHCG3 199 & 250 Components ,QWDNHDLUFRQQHFWLRQLQFK39& 3RZHUHGDQRGHURGV7KHZDWHUKHDWHU¶VFRYHUHGLQWKLV Side Views DWHURXWOHWSLSH´137FRQQHFWLRQ9HQWFRQQHFWLRQHKDXVWHOERZLQFK39& RQSDJHDQG&RQGHQVDWHUDLQ,QVWDOODWLRQRQSDJHInstallation Considerations Rough in DimensionsTOP Views FrontRecovery Capacities GAS Pressure RequirementsLocating the Water Heater GAS Line Connection SizeExtended Vent Terminations Optional Concentric TerminationsHard Water Circulation PumpsInstallation Requirements Power SupplyGAS Supply Systems Supply GAS RegulatorMixing Valves Dishwashing MachinesClosed Water Systems Thermal ExpansionTEMPERATURE-PRESSURE Relief Valve Valve Discharge Pipe RequirementsCondensate Drain Combustible Material StorageContaminated AIR Condensate Drain Water TrapAIR Requirements Unconfined SpaceConfined Space Unusually Tight ConstructionFresh AIR Openings for Confined Spaces Outdoor AIR Through TWO OpeningsOutdoor AIR Through ONE Opening Outdoor AIR Through TWO Horizontal DuctsOutdoor AIR Through TWO Vertical Ducts AIR from Other Indoor SpacesRXWGRRUV6HHLJXUH WKDQLQFKHVFPInstallation of Carbon Monoxide Detectors Commonwealth of Massachusetts InspectionApproved Carbon Monoxide Detectors SignageVenting Installation Power Vent ConfigurationGeneral Venting Information General Venting InstructionsINSPECT/ADJUST Intake AIR TEE Fitting Adjustment ProcedureHCG3 100T 199 & SUF 250 Intake AIR Connection Venting Requirements Venting Installation Sequence Power Vent InstallationDirect Vent Installation Supplied Installed Intake AIR Field Supplied Factory Installed Intake AIR ConnectionRemove for Direct Vent Pipe FieldVertical Termination Installation Vertical Terminations Installation Vertical Termination Direct VentVertical Terminations Flat Roof Clearance Field Supplied STRAP/SUPPORTSidewall Termination Installation Sidewall Termination InstallationSDVVWKURXJKWKHZDOO OHDVWLQFKHVFP6HHLJXUHConcentric Termination Installation Concentric Termination Flat Roof ClearanceQDWLRQDOFRGHVPXVWEHPDLQWDLQHG VDPHORFDWLRQInch Concentric Termination Installation Inch Concentric Termination KITTWO Concentric Terminations Three Concentric TerminationsFour Concentric Terminations Eight Concentric TerminationsMultiple Concentric Termination Arrangements Two Concentric TerminationsEight Concentric Terminations JURXSVGHSHQGLQJRQDYDLODEOHVSDFHPower Vent Horizontal Venting ArrangementsDirect Vent Horizontal Direct Vent Vertical Vent Horizontal Intake Direct Vent Horizontal Vent Vertical IntakeDirect Vent Horizontal Concentric Termination Clearances Sidewall Power Vent Power VentTermination Clearances Sidewall Direct Vent Direct VentWater Heater Installation Condensate Drain InstallationInstallation Notes Installation InstructionsSupply GAS Line Installation GAS Line SizingSupply GAS Line Sizing U. S. Units Supply GAS Line Sizing Metric UnitsGAS Line Leak Testing PurgingGAS Line Connection Electrical Wiring Power Supply ConnectionsENABLE/DISABLE Circuit Connecting An External Supervisory ControlWater Piping Diagrams Water Line Connections Valve Discharge PipeThermometers not Supplied Water Potable Heating and Space HeatingTemperature Regulation High Temperature Limit Control ECOHigh Temperature Applications Thermostat ControlControl System Operation OverviewControl System Navigation Menu HelpStatus Icons Icon DescriptionOperating States State DescriptionControl System Menus Menu DescriptionUser Settings & Control System Menus Update CancelBack Help Change Back Help Elapsed Time Day 0 hrs 0 minsBurner On Time Hrs 22 minsBack Advanced View Back HelpECO YesnoUpdate Select Back HelpName Your Company Name HereStart UP Prior to Start UPInitial Start UP GAS Valve / Venturi Assembly TOP View GAS Valve TOP ViewGAS Valve Side View GAS Valve TOP Detail ViewSupply GAS Pressure Adjustment Multiple Water Heater InstallationsManifold GAS Pressure Adjustment PDQXDOIRUIXUWKHUDVVLVWDQFHChecking the Firing Rate High Altitude Installations ‡ VHFRQGVLQRQHKRXUTo Turn OFF GAS FLUFXPVWDQFHVOn/Off Switch Lighting the Water HeaterLighting & Operation Labels DQGRSHUDWLQJWKHZDWHUKHDWHUTank Temperature 103F Operating Set Point 120F Do not TRY to Light the Burner by HandMenu Help Troubleshooting Installation Checklist Sequence of OperationSequence of Operation Flow Chart YES noOperational Problems Installation ErrorsRough STARTING, Rough Operation Momentary IgnitionFault and Alert Conditions Possible Causes CHECK/REPAIR Displayed FAULT/ALERT Message Back AdvancedHeater Information menu see Heater Information on Blower Prover Failure No Anode VoltageMaintenance General Maintenance ScheduleDraining and Flushing Filling the Water Heater Sediment RemovalLime Scale Removal Manual Lime Scale RemovalPowered Anode Rods Drain Valve and Access PanelsTEMPERATURE-PRESSURE Relief Valve Test Vent SystemDiagrams S1 DipswitchCCB Central Control Board Layout Changing Number of Ignition Trials Before Lock OUT HCG3 120 & 150 Wiring Diagram Transformer 50VA ON/OFF Ground VAC Neutral VAC HOTHCG3 199 & 250 Wiring Diagram 11 on J6 PlugGround Strip Burner Ground Inside CCB Burner Bolt Enclosure Circulation Pump Wiring Diagrams Water Piping Diagrams Line Temperature Control HOT Water ReturnHOT Water Outlet Pipe T&P to Open Drain Finished Floor Cold Water Supply Expansion Tank6HH&ORVHG6\VWHPVDQG7KHUPDOSDQVLRQRQSDJH 6HHDWHU/LQH&RQQHFWLRQVRQSDJHHIRUHLQVWDOODWLRQRIZDWHUSLSLQJUHYLHZWKHIROORZLQJ 6HH0LLQJ9DOYHVRQSDJHStorage Tank HOT Water OutletPipe T&P to Open Drain Finished Floor Storage Tanktemperature Water Piping Diagrams Open Drain HOT Water Return Cold Water Supply Expansion Tank Temperature & Pressure HOT Water Outlet Pipe T&P to Open Drain Finished FloorFull Port Ball Valve 6&XVWRPHUV Page ZZZDPHULFDQZDWHUKHDWHUFRP