A.O. Smith 317443-000, 100 Power Vent DV Series 120 Closed Water Systems, Thermal Expansion

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Figure 9.

CLOSED WATER SYSTEMS

Water supply systems may, because of code requirements or such conditions as high line pressure, among others, have installed devices such as pressure reducing valves, check valves, and back flow preventers. Devices such as these cause the water system to be a closed system.

THERMAL EXPANSION

As water is heated, it expands (thermal expansion). In a closed system the volume of water will grow when it is heated. As the volume of water grows there will be a corresponding increase in water pressure due to thermal expansion. Thermal expansion can cause premature tank failure (leakage). This type of failure is not covered under the limited warranty. Thermal expansion can also cause intermittent temperature-pressure relief valve operation: water discharged from the valve due to excessive pressure build up. This condition is not covered under the limited warranty. The temperature-pressure relief valve is not intended for the constant relief of thermal expansion.

A properly sized thermal expansion tank should be installed on all closed systems to control the harmful effects of thermal expansion.

Figure 10.

NOTE: To protect against untimely corrosion of hot and cold water fittings, it is strongly recommended that di-electric unions or couplings be installed on this water heater when connected to copper pipe, see Figure 10 also.

Figures 9 and 10 show the typical attachment of the water piping to the water heater. The water heater is equipped with 3/4 inch NPT water connections.

NOTE: If using copper tubing, solder tubing to an adapter before attaching the adapter to the water heater connections. Do not solder the water lines directly to the water heater connections. It will harm the dip tube and damage the tank.

T & P Valve and Pipe Insulation (if supplied)

Remove insulation for T & P valve and pipe connections from carton.

Figure 11.

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Contents Printed Whenever maintenance adjustment or service is required317443-000 Table of contents Safe installation, use and service ApprovalsPrecautions Hydrogen Gas Flammable General safety informationGrounding Instructions General safety information Fire or Explosion Hazard Preparing For The Installation IntroductionAbbreviations Used QualificationsFeatures and components Replacement Parts and Deliming ProductsInstallation consideration Rough in DimensionsRough-In-Dimensions Recovery capacity based on 96% thermal efficiencyProperty Damage Hazard Locating The Water HeaterInsulation Blankets Combustion AIR and VentilationUnconfined Space Confined Space Fresh Air Openings For Confined SpacesOutdoor Air Through Two Openings Outdoor Air Through One OpeningOutdoor Air Through Two Horizontal Ducts Air From Other Indoor SpacesInstalling the new water heater Power SupplyChemical Vapor Corrosion Water PipingDishwashing Machines Mixing ValvesSpace heating and potable water system Thermal Expansion Closed Water SystemsValve and Pipe Insulation if supplied Temperature-Pressure Relief Valve Valve Discharge Pipe RequirementsGas piping Condensate PipingHigh Altitude Installations Sediment Traps Filling the Water HeaterVent Pipe Termination VentingPlanning the Vent System Installation of Vent System Vent Terminal INSTALLATION, SidewallInstallation Requirements Commonwealth of Massachusetts Installation of Carbon Monoxide DetectorsApproved Carbon Monoxide Detectors SignageTermination Clearances Sidewall Power Vent Power VentTermination Clearances Sidewall Direct Vent Direct VentInstallation Sequence Sequence of INSTALLATIONS, aVent Termination a Direct Vent terminal installation Vent Terminals Supplied with Heater Must be UsedFlat Roof Installation Concentric vent installation Safety ConsiderationsKIT Components Description QtyConcentric Termination Flat Roof Clearance MULTI-CONCENTRIC Vent Terminations Direct vent diagram Vent Pipe Preparation Step B Step EStep F Step GBlower Prover Switch Blocked Exhaust SwitchBlocked Intake Switch ON/OFF SwitchPower Vent Wiring Schematic Figure What to do if YOU Smell GAS Do not try to light the burner by handDo not TRY to Light the Burner by Hand Temperature regulation HI Limit Switch ECOOverview Control system operationControl System Navigation Icon Description Status IconsOperating States Control System MenusUser Settings & Control System Menus Temperatures Operating Set Point And Differential AdjustmentTemperatures Heater StatusECO Contact , Blocked Inlet PS , Blocked Outlet PS , Blower Blower Low On , Blower High On displays whetherDisplay Settings Heater InformationCurrent Fault Fault HistoryFault Occurrence Restore Factory DefaultsService Contact Information Service Contact InformationStart UP Conditions For your informationOperational Conditions Periodic maintenance Temperature-Pressure Relief Valve OperationVenting System Inspection Anode ROD InspectionTo drain the water heater storage tank ServiceTo Flush the Water Heater Storage Tank Maintenance Temperature-Pressure Relief Valve TestLeakage checkpoints Troubleshooting Installation ChecklistSequence Of Operation Flow Chart YES noOperational Problems Fault And Alert ConditionsResetting Control System Lock Outs Diagnostic ChecksFault And Alert Messages AC ReversedBlower Prover Failure Page Page Page Limited Warranty Fill in Warranty and Keep for Future Reference

100 Power Vent DV Series 120, 317443-000 specifications

The A.O. Smith 317443-000,100 Power Vent DV Series 120 is an advanced water heating solution designed to enhance efficiency and performance for residential applications. As part of A.O. Smith's renowned lineup, this model embodies the company's commitment to innovation and energy conservation.

One of the main features of the DV Series 120 is its power venting capability. This technology allows for flexible installation options, as it can vent vertically or horizontally, accommodating various home configurations. It utilizes a fan-assisted venting system, which efficiently expels exhaust gases, ensuring safe operation even in tight spaces.

The unit's energy efficiency is another standout characteristic. Equipped with a high-efficiency gas burner, the DV Series 120 optimizes fuel consumption, resulting in lower utility bills while providing reliable hot water when needed. Its impressive Energy Factor (EF) ratings make it an environmentally friendly choice, aligning with modern standards for green building practices.

Durability is also a significant focus of the A.O. Smith 317443-000,100 Power Vent model. Constructed with a glass-lined tank and a robust anode rod, this water heater is designed to resist corrosion and extend its lifespan. This construction enhances performance reliability while minimizing maintenance needs, making it a smart investment for homeowners.

Smart technologies are integrated into the DV Series 120, featuring an intelligent control system that provides various operational insights. The built-in diagnostic features allow homeowners to monitor performance and identify potential issues early, reducing the likelihood of unexpected failures. This control system can also enable more precise temperature management, enhancing both comfort and efficiency.

Safety is paramount in the design of the A.O. Smith 317443-000,100. The unit comes equipped with safety features such as a built-in flame rollout sensor and an automatic shut-off system to protect against potential hazards. These features ensure peace of mind for users, allowing them to confidently rely on their hot water supply.

In summary, the A.O. Smith 317443-000,100 Power Vent DV Series 120 stands out as a high-efficiency water heating solution, combining innovative venting technologies, durability, smart features, and safety mechanisms. This model is an ideal choice for homeowners seeking a reliable and efficient hot water system that meets modern energy standards.
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