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100XXXXXX (A)_200XXXXXX (Ver. 00)

October 2016

Residential Gas

Water Heater

Installa on Instruc ons and

Use & Care Guide

Keep this manual in the pocket on heater for future reference whenever maintenance, adjustment or service is required.

Retain your original receipt as proof of purchase.

Residen al Atmospheric Gas Water Heater

with the Flammable Vapor Igni on Resistant

Safety System

Read this manual and the labels on the water heater before you install,
operate, or service it. If you have di

ﬃ

culty following the direc ons, or

aren’t sure you can safely and properly do any of this work yourself:

• Call our Technical Assistance Hotline at

1-877-817-6750 or visit

h p:// www.AOSmithAtLowes.com

. We can help you with installa on, opera ons,

troubleshoo ng, or maintenance. Before you call, write down the model and serial
number from the water heater’s data plate.

Incorrect installa on, opera on, or service can damage the water heater, your house
and other property, and present risks including

fi

re, scalding, electric shock, and

explosion, causing serious injury or death.

Do not store or use gasoline or other

fl

ammable vapors and liquids in the

vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.
• Do not touch any electrical switch;

do not use any phone in your build-

ing.

• Immediately call your gas supplier

from a neighbor’s phone. Follow the

gas supplier’s instruc ons.

• If you cannot reach your gas sup-

plier, call the

fi

re department.

Installa on and service must be per-

formed by a quali

fi

ed installer, service

agency or the gas supplier.

WARNING: If the informa on in

these instruc ons is not followed

exactly, a

fi

re or explosion may

result causing property damage,

personal injury or death.

LOW LEAD

CONTENT

Table of Contents Page

IMPORTANT SAFETY INFORMATION ............................................. 3
GETTING STARTED ........................................................................ 7
INSTALLATION ............................................................................. 14
OPERATION ................................................................................. 23
TROUBLESHOOTING ................................................................... 25
MAINTENANCE ........................................................................... 28
NOTES ......................................................................................... 31
REPAIR PARTS ............................................................................. 35

2000536058 (Ver. 00) 100277333 (A)

DO NOT RETURN THIS UNIT TO THE STORE

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Содержание G9-T5040NVR

Страница 1: ... service can damage the water heater your house and other property and present risks including fire scalding electric shock and explosion causing serious injury or death Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phon...

Страница 2: ...t to cold water supply Hot water line T P relief valve Cold water shut oﬀ Dra hood T P discharge pipe Drain pan discharge pipe Metal drain pan Gas control valve thermostat Cold water line Gas supply shut oﬀ Vent pipe Drain valve Gas supply Sediment Trap ...

Страница 3: ...oided could result in death or serious injury CAUTION CAUTION indicates a hazardous situa on that if not avoided could result in minor or moderate injury NOTICE NOTICE indicates prac ces not related to physical injury WARNING If the informa on in these instruc ons is not followed exactly a fire or explosion may result causing property damage personal injury or death Do not store or use gasoline or...

Страница 4: ...h to cause severe burns instantly resul ng in severe injury or death Feel water before bathing or showering To reduce the risk of scalding install Thermosta c Mixing Valves temperature limi ng valves at each point of use These valves automa cally mix hot and cold water to limit the temperature at the tap Mixing valves are available from Lowe s Follow manufac turer s instruc ons for installa on and...

Страница 5: ...bu on if you suspect flammable vapor have accumu lated inside or outside the appliance Immediately call a qualified person to inspect the appliance Water heaters subjected to a flammable vapors inci dent will show a discolora on on the flame arrestor and require replacement of the en re water heater Improper installa on or an inadequate air supply can also cause the FVIR system to dis able the wat...

Страница 6: ... odorless gas that is a by product of burning of fuels such as coal wood charcoal oil kerosene propane and natural gas Breathing excessive and abnormal amounts of carbon monoxide can cause carbon monoxide poisoning resul ng in serious injury or death This water heater must be supplied with adequate combus on air and must be properly vented to the outdoors Have a qualified person licensed plumber a...

Страница 7: ...pound approved for potable water For homes with copper pipes you may purchase a Gas Water Heater Hook Up Kit available from Lowes with compression fi ngs that don t require soldering This kit includes two 12 flex water lines two compression fi ngs an 18 flexible gas line two nipples and Teflon tape For homes with plas c pipe use threaded connectors suitable for the specific type of plas c pipe use...

Страница 8: ...le you will need to conduct the vent dra test on pages 23 24 when installa on is finished If there is not enough ven la on you will need to ven late with outside air Check for Chemicals Installa ons where corrosive chemi cals may be present require outside air Air for combus on and ven la on must be clean and free of corrosive or acid forming chemicals such as sulfur fluorine and chlorine Ven la o...

Страница 9: ...l or horizontal ducts B2 Determine type of ven la on There are several types of ven la on that can be used 1 Direct to outdoors 2 Ver cal ducts 3 Horizontal ducts 4 Single opening not recom mended must be at least 100 square inches Not appropriate for confined spaces smaller than 50 cubic feet per 1 000 BTU HR as calculated in sec on A or when ge ng air from another room 5 From a larger room insid...

Страница 10: ...mension of no less than three inches All screens must have mesh or larger Moveable louvers must be locked open or interconnected with the equipment so that they open au toma cally during opera on Keep louvers and grills clean and free of debris or other obstruc ons B5 Check that air source is clean and free of chemicals Air for combus on and ven la on must be clean and free of corrosive or flammab...

Страница 11: ...wl spaces or any confined or inaccessible loca on Single wall vent pipe cannot pass through any interior wall Clearance to Combus ble Materials The vent pipe cannot pass through any ceiling floor firewall or fire par on Any part of the vent system must main tain the following clearances from any combus ble materials Single wall vent pipe must main tain a six inch clearance from combus ble material...

Страница 12: ...with type B double wall vent pipe Figure 9 Venting through a chimney with type B double wall vent pipe Gas Piping Gas piping must be installed accord ing to local and state codes or in the absence of local and state codes the Na onal Fuel Gas Code ANSI Z223 1 NFPA 54 current edi on NOTICE When installing gas piping apply pipe joint compound or Teflon tape approved for fuel gases Figure 10 Gas Pipi...

Страница 13: ...eat ing appliances when used to supply potable water Solar Installa on If this water heater is used as a solar stor age heater or as a backup for the solar system the water supply temperatures to the water heater tank may be in excess of 120 F A Thermosta c Mixing Valve or other temperature limi ng valve must be installed in the water supply line to limit the supply temperature to 120 F The unit m...

Страница 14: ... on the main incoming cold water supply line and adjust the water pressure control to between 50 and 60 psi If your home does not have a Pressure Reducing Valve install a PRV on the home s main water sup ply line and set it to between 50 and 60 psi Pressure Reducing Valves are available at Lowe s BACKGROUND Over the years many u li es have increased water supply pressures so they can serve more ho...

Страница 15: ...stall a metal drain pan available from Lowe s under the water heat er to catch condensa on or leaks from the piping connec ons or tank Most codes require and we recom mend installing the water heater in a metal drain pan that is piped to an adequate drain The drain pan must be at least two inches wider than the diameter of the water heater Install the drain pan so the water level would be limited ...

Страница 16: ...d If the water heater is installed di rectly on carpe ng it shall be in stalled on a metal or wood panel extending beyond the full width and depth of the water heater by at least 3 in 76 2mm in any direc on If the water heater is installed in an alcove or closet the en re floor shall be covered by the aforestated panel If your area is prone to earth quakes use special straps as required by local b...

Страница 17: ... open a hot water faucet to help the water in the tank drain faster 9 When the tank is empty disconnect the Temperature Pressure T P Relief Valve discharge pipe You may be able to reuse the discharge pipe but do not reuse the old T P Relief Valve A new T P Relief Valve comes with your new water heater Figure 21 Removing the T P Relief Valve discharge pipe 10 Allow the vent pipe and dra hood to coo...

Страница 18: ...e drain pan so the water level is limited to a maximum depth of 1 3 4 4 Verify that the water heater is set in place properly Check that There is adequate space to install the T P Relief Valve discharge pipe and that it can be piped to a separate drain and not into the drain pan There is adequate access and space around the water heater for future maintenance The water heater is installed ver call...

Страница 19: ...discharge pipe must not be smaller than the pipe size of the T P Relief Valve The pipe must also be able to withstand 250 F 121 C without distor on Use only copper or CPVC pipe Do not use any other type of pipe such as PVC iron flexible plas c pipe or any type of hose Terminate the discharge pipe a maximum of six inches above a floor drain or outside the building Do not drain the discharge pipe in...

Страница 20: ...e of removing the water heater for service or replacement connect the water pipes with a coupling called a union We recommend using a dielectric type union available from Lowe s Dielectric unions can help prevent corrosion caused by ny elec tric currents common in copper water pipes and can help extend the life of the water heater IF YOU HAVE COPPER PIPES If your home has copper water pipes you ca...

Страница 21: ...ator at the nearest hot water faucet This allows debris in plumbing system to be washed out of the pipes 2 Turn the cold water supply back on and fill the tank 3 Open a hot water faucet and allow the water to run un l it flows with a full stream 4 Let the water run full stream for three minutes 5 Close the hot water faucet and replace the aerator 6 Check inlet and outlet connec ons and water pipes...

Страница 22: ...amounts of lint dust etc If so the air filter or flame arrestor located on the bo om of the water heater will need to be cleaned more o en Combus on Air Supply and Ven la on Adequate air supply for water heater and any other nearby gas appliances If the water heater is installed in a closet or other small enclosed space or within the living space of the house air supply openings needed Are the ope...

Страница 23: ...three seconds Wait 10 minutes between ligh ng a empts 7 A solid Status Light means the pilot was lit but is now oﬀ Release the gas control knob and wait 10 minutes Once the Status Light goes out repeat ligh ng steps 2 through 5 8 If the Status Light doesn t start flashing a er three ligh ng a empts turn the gas control knob to the OFF posi on and refer to the Troubleshoo ng No Hot Water sec on see...

Страница 24: ...nown as smelly water and can reduce the levels of bacteria that cause water borne diseases Water usage pa erns as well as heat from sources such as solar collectors ambient air and the pilot light can result in temperatures higher than the thermostat set point WARNING Higher temperatures increase the risk of scalding but even at 120 F hot water can scald see Table 1 Install Thermosta c Mixing Valv...

Страница 25: ...hot water is simply not warm enough there are several possible causes Faulty Thermosta c Mixing Valve in a faucet or shower control check other faucets in the house for hot water Water heater s capacity too small or usage too high Reversed plumbing connec ons or melted dip tube usually found soon a er new installa on Plumbing leak Sediment or lime build up in the bo om of the tank Thermosta c Mixi...

Страница 26: ...f Valve or discharge pipe and do not operate the water heater without a func oning T P Relief Valve this could cause an explosion Water Pressure too High High water pressure can cause the T P Relief Valve to drip Install a Pressure Re ducing Valve PRV on the main cold water supply line Adjust the PRV to between 50 and 60 psi Thermal Expansion Tank Install a Thermal Expansion Tank If a Thermal Expa...

Страница 27: ...Residen al Standard Gas Water Heater Use and Care Guide 27 TROUBLESHOOTING Residen al Standard Gas Water Heater Use and Care Guide 27 TROUBLESHOOTING ...

Страница 28: ...arden hose to the drain valve and place the other end of the hose in a drain outside or in buckets Note that sediment in the bo om of the tank may clog the valve and prevent it from draining If you can t get the tank to drain contact a qualified person 5 Turn the cold water supply valve OFF 6 Open the drain valve on the water heater Figure 42 Draining the water heater 7 Also open a hot water fauce...

Страница 29: ... properly perform this visual inspec on or if the burner needs to be cleaned get help from a qualified person T P Relief Valve Maintenance Figure 45 T P Relief Valve Read and follow the opera ng and an nual maintenance instruc ons provided by the manufacturer of the T P Relief Valve yellow label a ached to T P Relief Valve Minerals in the water can form deposits that cause the valve to s ck or cre...

Страница 30: ...ead a 4 sec on of gas pipe into the inlet and use it to turn the FVIR Safety System Opera onal Checklist TROU BLESHOOTING CHART gas control valve thermostat counterclockwise Do not use pipe wrench or equivalent to grip body Damage may result causing leaks Do not insert any sharp objects into the inlet or outlet connec ons Damage to the gas control valve thermostat may result Figure 56 Gas control ...

Страница 31: ...Residen al Standard Gas Water Heater Use and Care Guide 31 NOTES NOTES ...

Страница 32: ...32 Residen al Standard Gas Water Heater Use and Care Guide NOTES NOTES ...

Страница 33: ...Residen al Standard Gas Water Heater Use and Care Guide 33 NOTES NOTES ...

Страница 34: ...34 Residen al Standard Gas Water Heater Use and Care Guide NOTES NOTES ...

Страница 35: ...ermal switch wire lead 11 OUTER DOOR 12 PILOT THERMOPILEASSEMBLY KIT 13 FINAL BURNER ASSEMBLY 14 MANIFOLD DOOR GASKET 15 WRAP AROUND AIR FILTER REPAIR PARTS LIST Replacement parts may be ordered through your plumber or the local distributor Parts will be shipped at prevailing prices and billed accordingly NOTICE When ordering replacement parts have the following informa on ready Model and serial n...

Страница 36: ... Gas or L P Item 13 Final burner assembly which contains the burner orifice manifold tube gasket door pilot tube thermopile manifold component block with retainer clip thermal switch and pilot assembly Natural Gas Low Nox or L P Item 14 Contains manifold door gasket Item 12 Item 13 L P Burner Item 14 Item 13 Natural Burner Teflon is a registered trademark of E I Du Pont De Nemours and Company A O ...

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