American Water Heater Commercial Gas Water Heaters Features and Components, Basic Operation

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FEATURES AND COMPONENTS

BASIC OPERATION

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BLOWER

BURNER

ASSEMBLY

INTAKE AIR (combustion air)

CONNECTION 3 INCH PVC

MAIN BURNER (radial design)

HEAT

EXCHANGER

HELICAL

COIL

VENT (exhaust)

OUTLET

Figure 1

BLOWER/BURNER ASSEMBLY DETAIL

INTAKE AIR

COMBUSTION

(combustion air)

BLOWER

CONNECTION

 

3 INCH PVC

 

BLOWER

 

FLANGE

 

FLAME

 

SENSOR

 

MAIN

 

BURNER

 

(radial design)

 

HOT SURFACE

 

IGNITER

 

120,000 & 150,000 Btu/hr MODELS

COMBUSTION

INTAKE AIR

BLOWER ASSEMBLY

(combustion air)

 

CONNECTION

 

3 INCH PVC

 

BLOWER

 

FLANGE

 

HOT SURFACE

 

IGNITER

FLAME

MAIN

BURNER

SENSOR

(radial design)

 

199,000 & 250,000 Btu/hr MODELS

Figure 2

Hot Surface Igniter

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Flame Sensor

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Image 7 Contents
7KDQN\RXIRUEX\LQJWKLVHQHUJ\HI¿FLHQWZDWHUKHDWHU Installation Operation Service Maintenance Limited WarrantyDSSUHFLDWH\RXUFRQ¿GHQFHLQRXUSURGXFWV American Water HeaterTable of Contents KHDWHUVFRYHUHGLQWKLVPDQXDO Safe INSTALLATION, USE and Service Approvals 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 Views,QWDNHDLUFRQQHFWLRQLQFK39& HCG3 199 & 250 Components 3RZHUHGDQRGHURGV7KHZDWHUKHDWHU¶VFRYHUHGLQWKLV RQSDJHDQG&RQGHQVDWHUDLQ,QVWDOODWLRQRQSDJH Side Views DWHURXWOHWSLSH´137FRQQHFWLRQ 9HQWFRQQHFWLRQ HKDXVWHOERZ LQFK39&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 OpeningWKDQLQFKHV FP  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 InformationAdjustment Procedure INSPECT/ADJUST Intake AIR TEE FittingHCG3 100T 199 & SUF 250 Intake AIR Connection Venting Requirements Power Vent Installation Venting Installation SequenceDirect 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 ClearanceOHDVWLQFKHV FP 6HHLJXUH 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 TerminationsVenting Arrangements Power Vent HorizontalDirect Vent Horizontal Direct Vent Horizontal Vent Vertical Intake Direct Vent Vertical Vent Horizontal 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. UnitsPurging GAS Line Leak TestingGAS 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 MenusUpdate Cancel User Settings & Control System MenusBack 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 NamePrior to Start UP 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 LabelsDo not TRY to Light the Burner by Hand Tank Temperature 103F Operating Set Point 120FMenu Help Installation Checklist Sequence of Operation TroubleshootingYES no Sequence of Operation Flow ChartMomentary Ignition Operational ProblemsInstallation Errors Rough STARTING, Rough OperationFault and Alert Conditions Back Advanced Possible Causes CHECK/REPAIR Displayed FAULT/ALERT MessageHeater Information menu see Heater Information on No Anode Voltage Blower Prover FailureGeneral Maintenance Schedule MaintenanceDraining 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/OFF11 on J6 Plug HCG3 199 & 250 Wiring DiagramGround 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 HIRUHLQVWDOODWLRQRIZDWHUSLSLQJUHYLHZWKHIROORZLQJHOT Water Outlet Storage TankPipe T&P to Open Drain Finished Floor Storage Tanktemperature Water Piping Diagrams Open Drain HOT Water Return Cold Water Supply Expansion Tank HOT Water Outlet Pipe T&P to Open Drain Finished Floor Temperature & PressureFull Port Ball Valve 6&XVWRPHUV Page ZZZDPHULFDQZDWHUKHDWHUFRP