A.O. Smith 2600, 3400, 1700, 2000 instruction manual Control Components

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CONTROL COMPONENTS

THE CONTROL SYSTEM

The R7910A1138 is a burner control system that provides heat control, flame supervision, circulation pump control, fan control, boiler control sequencing, and electric ignition function. It will also provide status and error reporting.

Figure 5.  BURNER CONTROL SYSTEM

SPARK IGNITER

The spark igniter is a device that ignites the main burner. When power is supplied to the igniter electrode, an electric arc is created between the electrode and the ground terminal which ignites the main burner.

Figure 6.  SPARK IGNITER

LOW/HIGH GAS PRESSURE SWITCH

This XP boiler is equipped with a low gas pressure switch which meets the CSD-1 code requirements.

The Low Gas Pressure Switch is normally open and remains open unless the pressure falls below the preset pressure.

The High Gas Pressure Switch is normally closed and is used to detect excessive gas pressure.

Figure 7.  LOW/HIGH GAS PRESSURE SWITCH

GAS VALVE

The gas valve is a normally closed servo regulated gas valve. The valve opens only when energized by the burner control and closes when the power is removed. The burner control supplies 24 volts to the gas valve during operation.

Figure 8.  GAS VALVE

WATER FLOW SWITCH

The water flow switch activates when sufficient water flow has been established. Switch will not close when water flow is not present.

Figure 9.  WATER FLOW SWITCH

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Contents XP Boiler Table of Contents Approvals Safe INSTALLATION, USE and ServiceImportant Definitions General Safety Model Identification IntroductionAbbreviations Used QualificationsOperating Characteristics Dimensions and Capacity DataDouble Heat Exchanger Boiler Rough in Dimensions Double Electrical Requirements RatingsXB Models FLOW, Head and Temperature Rise FLOW, Head and Temperature RiseSingle Heat Exchanger Boiler Components Features and ComponentsDouble Heat Exchanger Boiler Components Low water cutoff board and sensor probe Lwco Component DescriptionControl Components Water Temperature Limit Controls Flame Sensor Water Temperature SensorsMain Power Supply Switch LOW Water Cutoff Device LwcoGeneral Boiler Installation ConsiderationsHydronic System HOT Water Boiler System General Water Line Connections Internal ContaminantsClosed Water Systems Thermal ExpansionGAS Connections Explosion HazardGAS Supply Line Sizing Corrosive Materials and Contamination SourcesVAC Power Supply Wiring Field WiringPower Supply Check LOW Voltage Control WiringSuggested Pipe Size for Multiple GAS Appliances Natural GAS Required Ability General RequirementsLocation Replacing Existing Common Vented BoilerPanels and Covers Installation ClearancesChemical Vapor Corrosion LevelingFresh AIR Openings for Confined Spaces Confined Space Outdoor AIR Through TWO OpeningsOutdoor AIR Through ONE Opening Outdoor AIR Through TWO Vertical Ducts Outdoor AIR Through TWO Horizontal DuctsAIR from Other Indoor Spaces DuctsVenting Requirements for Installation in Canada Vent and AIR Pipe InstallationAIR Inlet Pipe Materials Horizontal Installation Requirements Vertical Installation RequirementsDirect Vent Installation Requirements Venting SupportsModels Vent KIT Numbers XB/XW TEE Models Vent KIT Numbers XB/XW Rain CAPModels Vent AIR Intake XB/XW KIT Numbers Rain CAP Elbow Models Vent AIR Intake XB/XW KIT Numbers TEE ElbowDirect VENT, Vertical Vent Horizontal Intake Power Vent Termination Clearances Sidewall Power VentDirect Vent Termination Clearances Sidewall Direct VentBELOW. Keep Clear of ALL Obstructions VENT/AIR Termination Locations Direct Vent Horizontal TerminationTermination Prepare ROOF/WALL Penetrations Direct Venting Vertical TerminationVertical ClearancesModel Vent Diameter Vent MIN. Length Vent MAX. Length Inch Condensate Neutralizer Condensate DisposalCondensate Trap XP Models AO Smith Condensate Neutralizer KIT NumbersGAS Supply Pipe Connections GAS Supply ConnectionsGAS Pressure Requirements Purging GAS Line Pipe Sizes for Propane GASCheck GAS Supply Inlet Pressure Check for GAS LeaksFilling HOT Water Supply Boiler Installation Filling and Purging of Heating Boiler InstallationBoiler Start UP and Operations Manifold Pressure ConnectionsCHECK/CONTROL Water Hardness Freeze Protection Hydronic Heating InstallationINSPECT/FILL Condensate System Water Hardness Medium 0-12 Grains PER Gallon XW ModelLighting and Operating Instructions Setting of the Test Mode AdjustmentHigh Fire Rate Burner Control System Control SystemOverview Communications and Displays SpecificationsBurner Control Operation General Operational Sequence Domestic HOT Water Lead LAGLead LAG LL Master General Operation Local Operator Interface Display System FeaturesDefinitions Quick Setup S7999B OI Display Installation Instructions S7999B OI DisplayMounting the S7999B OI Display and Power Supply Common OI Display page Symbols POWER-UP ValidationStarting UP the S7999B OI Display NavigationS7999B Display page Flow Status or Home Configure ButtonLogin Configuration PasswordChange Parameter Settings KeyboardParameter Verify Example of Change ConfigurationData Comment FAULT/ALARM HandlingHistory Button Example of Hydronic History Operation Button Control Expanded Alert DetailSystem Configuration S7999B OI Display only Diagnostics ButtonSystem Synchronization S7999B OI Display only ConfigurationHydronic Control Code Description Recommended Troubleshooting Lockout Codes TroubleshootingReserved ILK OFF Flame Operation Faults 105 Flame detected out of sequence Adjust the LF switch while in this position Inspect the Combustion Pressure Switch to make Code Description Recommended Troubleshooting Lockout Codes Code Description Recommended Troubleshooting Lockout Codes Allowed Code DescriptionFan Parameter Errors Code Description Steam 20mA water temperature setting was invalid Abnormal Recycle Hardware flame bias delta high Eeprom DHW Plate Heat Exchanger Errors Maintenance Schedules Maintenance ProceduresGeneral Maintenance Inspect Boiler AreaBlower Compartment Burner MaintenanceAIR Filter BOX Heat Exchanger Maintenance Venting MaintenanceCondensate Removal System Handling Ceramic Fiber Materials Replacement PartsInlet DIA Piping DiagramsStorage Tank AOS Conditions and Exceptions Limited Warranty

3400, 1700, 2000, 2600 specifications

A.O. Smith, a leader in water heating solutions, has developed a range of high-efficiency water heaters that cater to various residential and commercial needs. Among their stellar offerings are the A.O. Smith 2600, 2000, 1700, and 3400 models, each boasting impressive features, cutting-edge technologies, and excellent energy efficiency.

The A.O. Smith 2600 model is designed for those who require a robust water heating solution with a capacity to handle high-demand scenarios. It utilizes a highly efficient heating element that provides rapid heating and maintains a steady output. The built-in smart control system allows users to monitor temperature settings and track energy consumption, ensuring optimal performance.

Next in line, the A.O. Smith 2000 is perfect for households that require a reliable and efficient water heater without compromising on space. This compact model integrates advanced thermal insulation that minimizes heat loss, coupled with a powerful heating element that ensures quick heating times. Its sleek design makes it suitable for various installations while maintaining aesthetic appeal.

The A.O. Smith 1700 model caters specifically to smaller residential needs but retains features that align with higher-end models. It incorporates state-of-the-art safety features, including overheat protection and a pressure relief valve. Its lightweight structure and ease of installation stand out, making it a recommended choice for those looking for efficient heating without extensive modifications to their plumbing systems.

Lastly, the A.O. Smith 3400 is a powerhouse designed for larger commercial applications. This model offers exceptional heating capacities and includes advanced technologies such as a digital display for easy monitoring and control. The robust build is complemented by a high-performance insulation system that significantly reduces energy consumption and operating costs.

All A.O. Smith water heaters, including the 2600, 2000, 1700, and 3400 models, feature corrosion-resistant materials ensuring longevity and durability. With their commitment to quality and innovation, A.O. Smith continues to provide water heating solutions that meet modern demands while emphasizing energy efficiency and user convenience. Whether for residential or commercial use, each model represents the pinnacle of reliability and performance in water heating technology.

In conclusion, A.O. Smith has established itself as a reliable choice for water heaters, with models that cater to diverse needs without compromising on efficiency or quality.