American Water Heater AHCG/HCG3 60T 120 - AHCG3/HCG3 100T 250 General Safety Information

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GENERAL SAFETY INFORMATION

PRECAUTIONS

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GROUNDING INSTRUCTIONS

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HYDROGEN GAS FLAMMABLE

Explosion Hazard

Flammable hydrogen gases may be present.

Keep all ignition sources away

from faucet when turning on hot water.

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Verify the power to the water heater is turned off before performing any service procedures.

Read and understand this instruction manual and the safety messages herein before installing, operating or servicing this water heater.

Failure to follow these instructions and safety messages could result in death or serious injury.

This manual must remain with the water heater.

Water temperature over 125°F (52°C) can cause severe burns instantly resulting in severe injury or death.

Children, the elderly and the physically or mentally disabled are at highest risk for scald injury.

Feel water before bathing or showering.

Temperature limiting devices such as mixing valves must be installed when required by codes and to ensure safe temperatures at fixtures.

Explosion Hazard

Overheated water can cause water tank explosion.

Properly sized temperature and pressure relief valve must be installed in the opening provided.

CAUTION

Improper installation, use and service may result

in property damage.

Do not operate water heater if flood damaged.

Inspect anode rods regularly, replace if damaged.

Install in location with drainage.

Fill tank with water before operation.

Properly sized thermal expansion tanks are required on all closed water systems.

Refer to this manual for installation and service.

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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 Components,QWDNHDLUFRQQHFWLRQLQFK39& HCG3 199 & 250 Components 3RZHUHGDQRGHURGV7KHZDWHUKHDWHU¶VFRYHUHGLQWKLV Side Views  DWHURXWOHWSLSH´137FRQQHFWLRQ9HQWFRQQHFWLRQ HKDXVWHOERZ LQFK39& 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 WKDQLQFKHV FP Installation of Carbon Monoxide Detectors Commonwealth of Massachusetts InspectionApproved Carbon Monoxide Detectors SignageVenting Installation Power Vent ConfigurationGeneral Venting Information General Venting InstructionsAdjustment Procedure INSPECT/ADJUST Intake AIR TEE FittingHCG3 100T 199 & SUF 250 Intake AIR Connection Venting Requirements Power Vent Installation Venting Installation SequenceDirect 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 OHDVWLQFKHV FP 6HHLJXUHConcentric 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 JURXSVGHSHQGLQJRQDYDLODEOHVSDFHVenting Arrangements Power Vent HorizontalDirect Vent Horizontal Direct Vent Horizontal Vent Vertical Intake Direct Vent Vertical Vent Horizontal 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 UnitsPurging GAS Line Leak TestingGAS 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 DescriptionUpdate Cancel User Settings & Control System MenusBack 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 HerePrior to Start UP 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 DQGRSHUDWLQJWKHZDWHUKHDWHUDo not TRY to Light the Burner by Hand Tank Temperature 103F Operating Set Point 120FMenu Help Troubleshooting Installation Checklist Sequence of OperationSequence of Operation Flow Chart YES noOperational Problems Installation ErrorsRough STARTING, Rough Operation Momentary IgnitionFault and Alert Conditions Back Advanced Possible Causes CHECK/REPAIR Displayed FAULT/ALERT MessageHeater Information menu see Heater Information on Blower Prover Failure No Anode VoltageGeneral Maintenance Schedule MaintenanceDraining 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 OUTHCG3 120 & 150 Wiring Diagram Transformer 50VAON/OFF Ground VAC Neutral VAC HOT11 on J6 Plug HCG3 199 & 250 Wiring DiagramGround 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 6HH0LLQJ9DOYHVRQSDJHHOT 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

AHCG/HCG3 60T 120 - AHCG3/HCG3 100T 250, Commercial Gas Water Heaters specifications

American Water Heater's Commercial Gas Water Heaters, particularly the AHCG/HCG3 60T 120 and AHCG3/HCG3 100T 250 models, stand out in the market for their impressive performance and reliable efficiency. Designed to meet the demanding needs of commercial applications, these gas water heaters provide an optimal solution for businesses requiring consistent hot water supply.

One of the main features of the AHCG/HCG3 series is its exceptional heat capacity. The models are engineered to deliver high recovery rates, ensuring that adequate hot water is available even during peak demand periods. The AHCG/HCG3 60T 120 can yield a robust output, ideal for smaller to medium-sized facilities, while the AHCG3/HCG3 100T 250 is designed for larger operations that require enhanced capacity.

These water heaters incorporate innovative technologies to maximize efficiency. The use of a high-efficiency burner system significantly reduces gas consumption, earning these models an Energy Factor rating that complies with modern energy standards. Additionally, the inclusion of a direct vent design allows for safe and efficient exhaust management, further promoting the energy-saving capabilities of these units.

The design of these commercial water heaters prioritizes durability and longevity. Constructed with heavy-duty components, including a corrosion-resistant water tank, these models are built to last, reducing the need for frequent replacements and maintenance. They also feature an advanced control system that monitors and adjusts the operation for optimal performance, enhancing user experience while decreasing operational costs.

Another notable characteristic of the AHCG/HCG3 series is their flexibility in installation. Both the 60T 120 and the 100T 250 models offer various venting options, which means they can easily fit into the existing infrastructure of many commercial facilities. This versatility facilitates a seamless integration process, saving time and resources during installation.

With a commitment to providing effective hot water solutions, American Water Heater continues to innovate, making the AHCG/HCG3 series a valuable addition to any commercial establishment. From restaurants to laundromats and beyond, these gas water heaters deliver reliable performance, ensuring that businesses can operate smoothly and efficiently.