A.O. Smith 3400 Outdoor AIR Through TWO Horizontal Ducts, Outdoor AIR Through TWO Vertical Ducts

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OUTDOOR AIR THROUGH TWO HORIZONTAL DUCTS

Figure 19.  OUTDOOR AIR THROUGH TWO HORIZONTAL

DUCTS

The confined space shall be provided with two permanent horizontal ducts, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the enclosure. The horizontal ducts shall communicate directly with the outdoors. See Figure 19.

Each duct opening shall have a minimum free area of 1 square inch per 2,000 Btu/hr (1100 mm2 per kW) of the aggregate input rating of all appliances installed in the enclosure.

When ducts are used, they shall be of the same cross sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be not less than 3 inches.

OUTDOOR AIR THROUGH TWO VERTICAL DUCTS

The illustrations shown in this section of the manual are a reference for the openings that provide fresh air into confined spaces only.

Do not refer to these illustrations for the purpose of vent installation.

Figure 20.  OUTDOOR AIR THROUGH TWO VERTICAL

DUCTS

The confined space shall be provided with two permanent vertical ducts, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the enclosure. The vertical ducts shall communicate directly with the outdoors. See Figure 20.

Each duct opening shall have a minimum free area of 1 square inch per 4,000 Btu/hr (550 mm2 per kW) of the aggregate input rating of all appliances installed in the enclosure.

When ducts are used, they shall be of the same cross sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be not less than 3 inches.

AIR FROM OTHER INDOOR SPACES

Figure 21.  AIR FROM OTHER INDOOR SPACES

The confined space shall be provided with two permanent openings, one commencing within 12 inches (300 mm) of the top and one commencing within 12 inches (300 mm) of the bottom of the enclosure. See Figure 21.

Each opening shall communicate directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an Unconfined Space.

Each opening shall have a minimum free area of 1 square inch per 1,000 Btu/hr (1100 mm2 per kW) of the aggregate input rating of all appliances installed in the enclosure. Each opening shall not be less than 100 square inches (645 cm2).

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Contents XP Boiler Table of Contents Safe INSTALLATION, USE and Service ApprovalsImportant Definitions General Safety Introduction Model IdentificationAbbreviations Used QualificationsDimensions and Capacity Data Operating CharacteristicsDouble Heat Exchanger Boiler Rough in Dimensions Double Ratings Electrical RequirementsFLOW, Head and Temperature Rise XB Models FLOW, Head and Temperature RiseFeatures and Components Single Heat Exchanger Boiler ComponentsDouble Heat Exchanger Boiler Components Component Description Low water cutoff board and sensor probe LwcoControl Components Flame Sensor Water Temperature Sensors Water Temperature Limit ControlsMain Power Supply Switch LOW Water Cutoff Device LwcoBoiler Installation Considerations GeneralHydronic System Internal Contaminants HOT Water Boiler System General Water Line ConnectionsClosed Water Systems Thermal ExpansionExplosion Hazard GAS ConnectionsCorrosive Materials and Contamination Sources GAS Supply Line SizingField Wiring VAC Power Supply WiringPower Supply Check LOW Voltage Control WiringSuggested Pipe Size for Multiple GAS Appliances Natural GAS General Requirements Required AbilityLocation Replacing Existing Common Vented BoilerInstallation Clearances Panels and CoversChemical Vapor Corrosion LevelingConfined Space Outdoor AIR Through TWO Openings Fresh AIR Openings for Confined SpacesOutdoor AIR Through ONE Opening Outdoor AIR Through TWO Horizontal Ducts Outdoor AIR Through TWO Vertical DuctsAIR from Other Indoor Spaces DuctsVenting Vent and AIR Pipe Installation Requirements for Installation in CanadaAIR Inlet Pipe Materials Vertical Installation Requirements Horizontal Installation RequirementsDirect Vent Installation Requirements Venting SupportsModels Vent KIT Numbers XB/XW Rain CAP Models Vent KIT Numbers XB/XW TEEModels Vent AIR Intake XB/XW KIT Numbers TEE Elbow Models Vent AIR Intake XB/XW KIT Numbers Rain CAP ElbowDirect VENT, Vertical Vent Horizontal Intake Termination Clearances Sidewall Power Vent Power VentTermination Clearances Sidewall Direct Vent Direct VentBELOW. Keep Clear of ALL Obstructions Direct Vent Horizontal Termination VENT/AIR Termination LocationsTermination Direct Venting Vertical Termination Prepare ROOF/WALL PenetrationsVertical ClearancesModel Vent Diameter Vent MIN. Length Vent MAX. Length Inch Condensate Disposal Condensate NeutralizerCondensate Trap XP Models AO Smith Condensate Neutralizer KIT NumbersGAS Supply Connections GAS Supply Pipe ConnectionsGAS Pressure Requirements Pipe Sizes for Propane GAS Purging GAS LineCheck GAS Supply Inlet Pressure Check for GAS LeaksFilling and Purging of Heating Boiler Installation Filling HOT Water Supply Boiler InstallationBoiler Start UP and Operations Manifold Pressure ConnectionsFreeze Protection Hydronic Heating Installation CHECK/CONTROL Water HardnessINSPECT/FILL Condensate System Water Hardness Medium 0-12 Grains PER Gallon XW ModelLighting and Operating Instructions Adjustment Setting of the Test ModeHigh Fire Rate Control System Burner Control SystemOverview Specifications Communications and DisplaysBurner Control Operation General Operational Sequence Lead LAG Domestic HOT WaterLead LAG LL Master General Operation Features Local Operator Interface Display SystemDefinitions Installation Instructions S7999B OI Display Quick Setup S7999B OI DisplayMounting the S7999B OI Display and Power Supply POWER-UP Validation Common OI Display page SymbolsStarting UP the S7999B OI Display NavigationS7999B Display page Flow Configure Button Status or HomeConfiguration Password LoginChange Parameter Settings KeyboardExample of Change Configuration Parameter VerifyFAULT/ALARM Handling Data CommentHistory Button Example of Hydronic History Control Expanded Alert Detail Operation ButtonDiagnostics Button System Configuration S7999B OI Display onlyConfiguration System Synchronization S7999B OI Display onlyHydronic Control Troubleshooting Code Description Recommended Troubleshooting Lockout CodesReserved 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 Code Description AllowedFan 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 Procedures Maintenance SchedulesGeneral Maintenance Inspect Boiler AreaBurner Maintenance Blower CompartmentAIR Filter BOX Venting Maintenance Heat Exchanger MaintenanceCondensate Removal System Replacement Parts Handling Ceramic Fiber MaterialsPiping Diagrams Inlet DIAStorage Tank AOS Limited Warranty Conditions and Exceptions

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.