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American Water Heater Commercial Gas Water Heaters instruction manual Water Piping Diagrams

Models: AHCG/HCG3 60T 120 - AHCG3/HCG3 100T 250 Commercial Gas Water Heaters

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WATER PIPING DIAGRAMS

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TWO WATER HEATERS, SINGLE TEMPERATURE WITH BUILDING RECIRCULATION

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

HOT WATER

OUTLET

LEGEND

TEMPERATURE & PRESSURE

RELIEF VALVE

PRESSURE RELIEF VALVE

CIRCULATING PUMP

TANK OR LINE TEMPERATURE

CONTROL

DRAIN

FULL PORT BALL VALVE

CHECK VALVE

TEMPERATURE GAGE

WATER FLOW SWITCH

75

LINE TEMPERATURE CONTROL

PIPE T&P TO

OPEN DRAIN

FINISHED

FLOOR

PIPE T&P TO OPEN DRAIN

HOT WATER

RETURN

COLD WATER

SUPPLY

EXPANSION

TANK

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American Water Heater Commercial Gas Water Heaters, AHCG/HCG3 60T 120 - AHCG3/HCG3 100T 250 Water Piping Diagrams

Contents

7KDQN\RXIRUEX\LQJWKLVHQHUJ\HI¿FLHQWZDWHUKHDWHU Installation Operation Service Maintenance Limited WarrantyDSSUHFLDWH\RXUFRQ¿GHQFHLQRXUSURGXFWV American Water HeaterTable of Contents KHDWHUVFRYHUHGLQWKLVPDQXDO Safe INSTALLATION, USE and ServiceApprovals SRWHQWLDOHSRVXUHWRVXFKVXEVWDQFHVHydrogen GAS Flammable General Safety InformationPrecautions Grounding InstructionsFire or Explosion Hazard Installing, using or servicing Water heaterAbbreviations Used Preparing for the InstallationQualified Installer or Service Agency IntroductionBasic Operation Features and ComponentsHCG3 120 & 150 Components TOP ViewsHCG3 199 & 250 Components ,QWDNHDLUFRQQHFWLRQLQFK39& 3RZHUHGDQRGHURGV7KHZDWHUKHDWHU¶VFRYHUHGLQWKLV RQSDJHDQG&RQGHQVDWHUDLQ,QVWDOODWLRQRQSDJH Side Views DWHURXWOHWSLSH´137FRQQHFWLRQ 9HQWFRQQHFWLRQHKDXVWHOERZLQFK39&Front Installation ConsiderationsRough in Dimensions TOP ViewsGAS Line Connection Size Recovery CapacitiesGAS Pressure Requirements Locating the Water HeaterCirculation Pumps Extended Vent TerminationsOptional Concentric Terminations Hard WaterSupply GAS Regulator Installation RequirementsPower Supply GAS Supply SystemsThermal Expansion Mixing ValvesDishwashing Machines Closed Water SystemsValve Discharge Pipe Requirements TEMPERATURE-PRESSURE Relief ValveCondensate Drain Water Trap Condensate DrainCombustible Material Storage Contaminated AIRUnusually Tight Construction AIR RequirementsUnconfined Space Confined SpaceOutdoor AIR Through TWO Horizontal Ducts Fresh AIR Openings for Confined SpacesOutdoor AIR Through TWO Openings Outdoor AIR Through ONE OpeningWKDQLQFKHVFP Outdoor AIR Through TWO Vertical DuctsAIR from Other Indoor Spaces RXWGRRUV6HHLJXUHSignage Installation of Carbon Monoxide DetectorsCommonwealth of Massachusetts Inspection Approved Carbon Monoxide DetectorsGeneral Venting Instructions Venting InstallationPower Vent Configuration General Venting InformationINSPECT/ADJUST Intake AIR TEE Fitting Adjustment ProcedureHCG3 100T 199 & SUF 250 Intake AIR Connection Venting Requirements Venting Installation Sequence Power Vent InstallationDirect Vent Installation Pipe Field Supplied Installed Intake AIRField Supplied Factory Installed Intake AIR Connection Remove for Direct VentVertical Termination Installation Field Supplied STRAP/SUPPORT Vertical Terminations InstallationVertical Termination Direct Vent Vertical Terminations Flat Roof ClearanceOHDVWLQFKHVFP6HHLJXUH Sidewall Termination InstallationSidewall Termination Installation SDVVWKURXJKWKHZDOOVDPHORFDWLRQ Concentric Termination InstallationConcentric Termination Flat Roof Clearance QDWLRQDOFRGHVPXVWEHPDLQWDLQHGInch Concentric Termination KIT Inch Concentric Termination InstallationEight Concentric Terminations TWO Concentric TerminationsThree Concentric Terminations Four Concentric TerminationsJURXSVGHSHQGLQJRQDYDLODEOHVSDFH Multiple Concentric Termination ArrangementsTwo Concentric Terminations Eight Concentric TerminationsPower Vent Horizontal Venting ArrangementsDirect Vent Horizontal Direct Vent Vertical Vent Horizontal Intake Direct Vent Horizontal Vent Vertical IntakeDirect Vent Horizontal Concentric Power Vent Termination Clearances Sidewall Power VentDirect Vent Termination Clearances Sidewall Direct VentInstallation Instructions Water Heater InstallationCondensate Drain Installation Installation NotesSupply GAS Line Sizing Metric Units Supply GAS Line InstallationGAS Line Sizing Supply GAS Line Sizing U. S. UnitsGAS Line Leak Testing PurgingGAS Line Connection Connecting An External Supervisory Control Electrical WiringPower Supply Connections ENABLE/DISABLE CircuitWater Potable Heating and Space Heating Water Piping DiagramsWater Line Connections Valve Discharge Pipe Thermometers not SuppliedThermostat Control Temperature RegulationHigh Temperature Limit Control ECO High Temperature ApplicationsMenu Help Control System OperationOverview Control System NavigationIcon Description Status IconsMenu Description Operating StatesState Description Control System MenusUser Settings & Control System Menus Update CancelBack Help Change Back Help Hrs 22 mins Elapsed TimeDay 0 hrs 0 mins Burner On TimeYesno Back AdvancedView Back Help ECOYour Company Name Here UpdateSelect Back Help NameStart UP Prior to Start UPInitial Start UP GAS Valve TOP Detail View GAS Valve / Venturi Assembly TOP ViewGAS Valve TOP View GAS Valve Side ViewPDQXDOIRUIXUWKHUDVVLVWDQFH Supply GAS Pressure AdjustmentMultiple Water Heater Installations Manifold GAS Pressure AdjustmentFLUFXPVWDQFHV Checking the Firing Rate High Altitude Installations‡ VHFRQGVLQRQHKRXU To Turn OFF GASDQGRSHUDWLQJWKHZDWHUKHDWHU On/Off SwitchLighting the Water Heater Lighting & Operation LabelsTank Temperature 103F Operating Set Point 120F Do not TRY to Light the Burner by HandMenu Help Installation Checklist Sequence of Operation TroubleshootingYES no Sequence of Operation Flow ChartMomentary Ignition Operational ProblemsInstallation Errors Rough STARTING, Rough OperationFault and Alert Conditions Possible Causes CHECK/REPAIR Displayed FAULT/ALERT Message Back AdvancedHeater Information menu see Heater Information on No Anode Voltage Blower Prover FailureMaintenance General Maintenance ScheduleDraining and Flushing Manual Lime Scale Removal Filling the Water HeaterSediment Removal Lime Scale RemovalVent System Powered Anode RodsDrain Valve and Access Panels TEMPERATURE-PRESSURE Relief Valve TestChanging Number of Ignition Trials Before Lock OUT DiagramsS1 Dipswitch CCB Central Control Board LayoutGround VAC Neutral VAC HOT HCG3 120 & 150 Wiring DiagramTransformer 50VA ON/OFFHCG3 199 & 250 Wiring Diagram 11 on J6 PlugGround Strip Burner Ground Inside CCB Burner Bolt Enclosure Circulation Pump Wiring Diagrams Finished Floor Cold Water Supply Expansion Tank Water Piping DiagramsLine Temperature Control HOT Water Return HOT Water Outlet Pipe T&P to Open Drain6HH0LLQJ9DOYHVRQSDJH 6HH&ORVHG6\VWHPVDQG7KHUPDOSDQVLRQRQSDJH6HHDWHU/LQH&RQQHFWLRQVRQSDJH HIRUHLQVWDOODWLRQRIZDWHUSLSLQJUHYLHZWKHIROORZLQJStorage 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