A.O. Smith Water Heater Gas Requirements, Gas Piping, Gas Pressure Testing

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MANUAL GAS_

SHUT-OFF VALVE--_

GROUND-------=

JOINT

UNION

CHECK WITH

LOCAL UTILITY

FOR MINIMUM HEIGHT

Explosion Hazard

• Usea new CSA approvedgassupply line.

3" MINIMUM

DISCHARGE PiPE

(DO NOT PLUG OR CAP)

•Installa shut-offvalve.

•Do not connecta naturalgas waterheater to an L.P.gas supply.

t/

 

_6"

MAXIMUM

DRIP LEG_

_

T

AIR GAP

SUITABLE

DRAIN "--_'_f

 

 

FIGURE 3.

•Do not connectan L.P.gaswater heaterto a naturalgas

supply.

Gas Pressure

 

•Failureto follow theseinstructionscan resultin death, explosion,or carbonmonoxidepoisoning.

Gas Requirements

IMPORTANT: Read the rating plate to be sure the water heater is made for the type of gas you will be using in your home. This information will be found on the rating plate located near the gas control valve/thermostat. If the information does not agree with the type of gas available, do not install or light. Call your dealer.

NOTE: An odorant is added by the gas supplier to the gas used by this water heater. This odorant may fade over an extended period of time. Do not depend upon this odorant as an indication of leaking gas.

Gas Piping

The gas piping must be installed according to all local and state codes or, in the absence of local and state codes, the "National Fuel Gas Code", ANSI Z223.1(NFPA 54)-current edition.

Tables 1 and 2 on the following page provide a sizing reference for commonly used gas pipe materials. Consult the "National Fuel Gas Code" for the recommended gas pipe size of other materials.

NOTE: Use pipe joint compound or teflon tape marked as

being resistant to the action of petroleum [Propane (L.R)] gases (See Figure 3.)

1.Install a readily accessible manual shut-off valve in the

gas supply line as recommended by the local utility. Know the location of this valve and how to turn off the

gas to this unit.

2.Install a drip leg (if not already incorporated as part of the water heater) as shown. The drip leg must be no less than three inches long for the accumulation of dirt, foreign material, and water droplets.

3.Install a ground joint union between the gas control valve/thermostat and the manual shut-off valve. This

is to allow easy removal of the gas control valve/ thermostat.

4.Turn the gas supply on and check for leaks. Test all connections by brushing on an approved noncorrosive leak-detection solution. Bubbles will show a leak.

Correct any leak found.

Explosion Hazard

•Gas leaks can not always be detected by smell.

•Gas suppliers recommend that you use a gas detector approved by UL or CSA.

•For more information, contact your gas supplier.

•If a gas leak is detected, follow the "What to do if you smell gas" instructions on the cover of this manual.

IMPORTANT: The gas supply pressure must not exceed the maximum supply pressure as stated on the water heater'srating plate. The minimum supply pressure is for the purpose of input adjustment.

Gas Pressure Testing

IMPORTANT: This water heater and its gas connection must be leak tested before placing the appliance in operation.

•If the code requires the gas lines to be tested at a pressure exceeding 14" W.C., the water heater and its manual shut-off valve must be disconnected from the gas supply piping system and the line capped.

•If the gas lines are to be tested at a pressure less than

14" W.C., the water heater must be isolated from the gas supply piping system by closing its manual shut-off valve.

NOTE: Air may be present in the gas lines and could prevent the pilot from lighting on initial start-up. The gas lines should be purged of air by a qualified technician after installation of the gas piping system. While purging the gas piping system of air, insure that the fuel is not spilled in the area of the water heater installation, or any source of ignition. If the fuel is spilled while purging the piping system of air follow the "WHAT TO DO IF YOU SMELL GAS" instructions on the cover of this manual.

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Contents Smith InstallerWater Important Definitions Improper installation and use may result in property damage Fire or Explosion HarzardFire Hazard GET to Know Your Water Heater GAS Models Important Information About This Water Heater Consumer InformationConsumer Responsibilities Site Location Location RequirementsPmpey Damage Hazard Clearances and AccessibilityGas Pressure Gas Pressure TestingGas Requirements Gas PipingExplosion Hazard LP Gas OnlyConfined Space Unconfined SpaceCarbon Monoxide Warning RoomAll Air from Inside the Building All Air from OutdoorsLouvers and Grilles PER Open Draft Hood InstallationVent Connectors Vent Pipe SizeChimney Connection MA,NTA,N\ Piping InstallationClosed System/Thermal Expansion Propey Damage HazardTemperature & Pressure Relief Valve Temperature and Pressure Relief Valve Explosion HarzardRelief Valve and Pipe Insulation Some Models Combination Space Heating/Potable Water SystemAIR Solar InstallationVent Pipe System Water System PipingGas Supply and Piping Before Lighting InstructionsChecking the Draft ForyoursafetyreadbeforelightingToturnoffgastoappliance Burn HazardBurner Flames Water Temperature RegulationEmergency Shut Down White Rodgers ValvesOperational Conditions Property Damage HazardCondensation Routine Preventive Maintenance Anode Rod/Water OdorDraining and Flushing Removing the Burner from the Manifold/ Burner Assembly Replacement PartsManualrelief ThermalReplacing the Thermocouple Replacing the Pilot/Pilot Tube AssemblyReplacing the Manifold/Burner Assembly External Inspection & Cleaning of the Base-Ring FilterCleaning the Combustion Chamber and Flame-arrestor Testing the Igniter System Piezoelectric Igniter SystemRemoving and Replacing the Gas Control Valve/Thermostat Possible Causes FVlR System Operational ChecklistThermostat set too high ProblemYES Repair Parts List Listed Parts Kits and Illustrations Page Conditions and Exceptions Limited Residential GAS WarrantyInstallation Information Claim ProcedureLimitation on Implied Warranties Disclaimers

Water Heater specifications

A.O. Smith is a renowned name in the water heating industry, celebrated for its commitment to innovation, quality, and efficiency. Their water heaters are designed to cater to a wide variety of needs, making them suitable for both residential and commercial applications. The main features of A.O. Smith water heaters are tailored to ensure optimal performance, convenience, and reliability.

One of the standout characteristics of A.O. Smith water heaters is their impressive energy efficiency. Many models are equipped with advanced insulation technologies that minimize heat loss, allowing users to save on energy bills while ensuring a consistent supply of hot water. The introduction of high-efficiency gas burners and electric heating elements enhances their energy utilization, which is reflected in their excellent Energy Factor ratings.

A.O. Smith also incorporates smart technology in its water heaters. Many models feature integrated Wi-Fi connectivity, allowing homeowners to monitor and control their water heating system remotely via a smartphone app. This capability enables users to adjust temperature settings, receive maintenance alerts, and track energy usage, providing a new level of convenience and control.

Durability is another hallmark of A.O. Smith water heaters. Constructed with high-quality materials, these units often feature a glass-lined tank that enhances corrosion resistance. Additionally, many models are designed with a robust anode rod that helps prevent rusting, extending the lifespan of the heater and ensuring dependable service for years to come.

Safety features are also a priority for A.O. Smith. Many water heaters come equipped with advanced safety mechanisms, such as automatic shut-off valves, temperature controls, and flame failure detection systems, ensuring safe operation and reducing the risk of accidents.

Different models are available to suit varying space requirements and preferences. A.O. Smith produces traditional tank water heaters as well as modern tankless options, which provide endless hot water on demand, making them ideal for homes needing high hot water consumption. Their versatility guarantees that customers can find the perfect solution tailored to their specific needs.

In conclusion, A.O. Smith water heaters represent a blend of innovation, efficiency, durability, and safety. With various models available that cater to different heating needs and preferences, A.O. Smith continues to remain a trusted choice for consumers seeking reliable hot water solutions.
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