How To Install Ao Smith Water Heater

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Installing the New Water Heater

The data on this web site is supplemental to the printed instructions that came with your water heater. To reduce the take a chance of belongings harm, serious injury or expiry, read and follow all labels on the water heater and the safe instructions in the printed owner's manual.

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Step 1 : Tools

• Box cutter

• Marker

• Thermometer

• Not-contact excursion tester

• Paper towels or shop rags

• Pipe cutter

• Pipe joint compound or plumber's tape

• 1/4" nut driver and/or Phillip's screwdriver and wrench

Pace 2 : Supplies

• Drain pan

• For homes with copper pipes, consider purchasing an Electric H2o Heater Installation Kit (available from hardware stores and home centers) which have compression fittings that don't require soldering.

• For homes with plastic pipe, use threaded connectors suitable for the specific type of plastic pipe used: CPVC or PEX (cantankerous-linked polyethylene). Practise non apply PVC or iron pipe.

• Shutoff valve

• Thermostatic mixing valves

Step 3 : Open Box and Remove the Water Heater

• Cut the water heater box along the dotted lines.

Step iv : Read the Printed Installation Instructions and Labels

• Read the printed installation instructions, including all of the safety warnings, before beginning.

• Read all of the labels on the water heater.

• It is your responsibleness to ensure that the installation complies with national, country and local building, plumbing, and electric codes.

• Bank check the water heater's data plate and ensure that the habitation'due south voltage, wiring size, and circuit breaker are correct for this water heater. Ensure that wire sizes, type, and connections comply with all applicable local codes. In the absence of local codes, follow NFPA-seventy and the current edition of the National Electric Code (NEC).

• Discover: If yous are not certain yous can correctly and safely complete the installation, seek help from a qualified person.

Pace v : Install the Drain Pan

• Install a suitable drain pan that is piped to an adequate bleed. Install the bleed then the h2o level is limited to a maximum depth of 1-3/4".

• The drain pan must be at to the lowest degree 2 inches wider than the diameter of the h2o heater.

Footstep six : Install the Water Heater in the Drain Pan

• Set up the water heater in the drain pan, taking care non to damage the drain pan.

• CAUTION: Water heaters are heavy. Use two or more people to remove or install a water heater if you don't have an apparatus dolly. Failure to do then can event in back or other injury.

• Verify there is adequate access and space around the water heater for future maintenance.

Step 7 : Install the Temperature and Force per unit area Relief Valve

• Most Temperature and Force per unit area (T&P) Relief Valves are installed at the mill. If your T&P Relief Valve is in a carve up carton, it must be installed in the opening marked "T&P Relief Valve." Use the new T&P Relief Valve supplied with your new water heater. Do not reuse the old one.

• Warning! If your water heater does not have a factory installed T&P Relief Valve, install one (and a belch piping) according to the printed installation instructions to avoid serious injury or death from explosion.

Step 8 : Install the Discharge Pipe

• Install the discharge piping. The belch pipe should be at least three/4" inside diameter and sloped for proper drainage. Install it to allow for complete drainage.

• The belch pipage must withstand 250°F (121°C) without distortion. Apply merely copper, PEX, or CPVC pipage. Exercise not utilise any other type of piping, such equally PVC, iron, flexible plastic pipe, or any type of hose.

• Terminate the discharge pipage at least 1" and a maximum of 6" above a floor drain or outside. Do non bleed the discharge piping into the drain pan; instead, pipe it to an adequate bleed.

• In cold climates, cease the belch pipe inside the building to an adequate bleed. Outside drains could freeze and obstruct the bleed line.

• Warning! Practise non identify whatever valve or other brake between the tank and T&P Relief Valve. Do not cap, block, plug, or insert any valve between the T&P Relief Valve and the cease of the discharge pipage. Practice non install any reducer in the discharge pipe.

Step 9 : Install Shutoff Valve

• If one is not already installed, install a transmission shutoff valve in the cold water line that supplies the h2o heater. Install the shutoff valve nearly the h2o heater then that information technology is readily accessible. Only utilise a total-flow brawl or gate valve compatible with drinkable water.

• This step varies depending on your water heater'southward location and pipage. Consult the installation instructions.

Step 10 : Install Thermostatic Mixing Valves

• Install a Thermostatic Mixing Valve at each point of utilize (for instance, kitchen sink, bathroom sink, bath, shower) per the valve manufacturer's instructions.

• For h2o heaters that are fed by a solar water heating organisation (or any other pre-heating arrangement), always install a Thermostatic Mixing Valve or other temperature limiting device in the inlet water supply line to limit h2o supply inlet temperature to 120°F.

• WARNING! Hot water can cause severe burns instantly, resulting in astringent injury or death. Install Thermostatic Mixing Valves at each point of utilize to reduce the risk of scalding.

Step 11 : Flexible Connectors are Easier to Work With

• For ease of removing the water heater for service or replacement, use compression fittings to connect the h2o pipes. If you are soldering copper pipes, use dielectric unions to connect the pipes to the water heater.

• Installation kits are available with flexible stainless steel connectors and compression fittings that don't require soldering. And many flexible connectors contain built-in dielectric fittings. Use fittings appropriate for the type of pipe in your home. Use copper, PEX or CPVC pipe. Exercise not employ fe or PVC pipe.

• Find: Do non solder pipes while they are attached to the water heater. The h2o heater's inlet and outlet connections contain non-metallic parts which could exist damaged.

Pace 12 : Mensurate Pipes Advisedly

• If you are using the installation kit with flexible connectors, measure both of the water lines.

Step 13 : Cut Water Pipes to Length

• Cut both of the h2o pipes, merely leave them a little longer than the measurement. You can always cut them shorter if necessary.

Step 14 : Install Compression Fittings

• Install compression fittings on both water lines and tighten.

• Watch this short video to meet how that's washed.

Pace 15 : Pipe Joint Chemical compound or Plumber's Record

• Use pipe joint compound or plumber's tape on the threaded connections only.

Footstep xvi : Connect the H2o Supply

• Connect the cold water supply using a iii/4" NPT threaded adapter to the outlet connectedness on the h2o heater marked "C" (COLD).

• Connect the hot water supply using a 3/4" NPT threaded adapter to the outlet connection on the water heater marked "H" (HOT).

Stride 17 : Check the Water Pipes

• Make sure the home'due south hot and cold h2o pipes are continued to the correct hot and cold water fittings on the water heater.

Step xviii : Dry out the Pipe Connections

• Dry the pipe connections so that any drips or leaks will exist apparent.

Stride 19 : Plough the Cold Water Supply ON

• Turn the common cold h2o supply back ON and fill the tank.

Pace 20 : Remove the Aerator

• Detect: Do non turn electrical ability on unless you are sure all of the air is out of the tank and the tank is completely full of water. If power is applied before the tank is completely full of water, the upper element will burn out (dry fire).

• To remove air from the tank and allow the tank to fill completely with water, follow these steps:

• Remove the aerator at the nearest hot h2o faucet. This allows any debris in plumbing system to exist washed out of the pipes.

Step 21 : Open up a Hot Water Faucet

• Open a hot water faucet and allow the water to run until it flows total stream.

• Allow the water run total stream for THREE MINUTES to go all of the air out of the tank.

• Find: You lot must remove all the air from the tank and permit the tank to make full completely with water before connecting electric power.

Step 22 : Shut the Hot Water Faucet and Replace the Aerator

• After all of the air has been removed from the tank, close the hot h2o faucet and replace the aerator.

Step 23 : Check for Leaks

• Check inlet and outlet connections and water pipes for leaks. Tighten fittings or repair any leaks.

• Well-nigh all leaks occur at connections and are not a tank leak.

Step 24 : Bank check for Electric Power

• Using a non-contact circuit tester, check the power wires to make sure the power is off.

• WARNING! Working on an energized circuit can result in severe injury or expiry from electrical shock. Check wires with a volt meter or excursion tester to make certain power is off.

Pace 25 : Install Wiring in a Conduit

• Install wiring in an canonical conduit (if required by local codes).

Step 26 : Remove the Junction Box Cover

• Remove the cover on the electric junction box on the top of the water heater.

Step 27 : Insert Conduit Connector

• Insert the conduit connector and power wires through the pigsty in the junction box embrace.

• Attach strain-relief nut.

Pace 28 : Connect the Ground Wire

• Connect the dwelling'due south bare copper or green ground wire to the water heater'south light-green ground spiral.

Footstep 29 : Connect the Home'south Power Wires

• Connect the abode's ii power wires to the water heater's two service wires. Utilise suitable wire nuts or other canonical means to make the power connections.

Stride thirty : Replace the Junction Box Cover

• Replace the junction box cover and secure with the screws provided.

• Alert! Be sure cover is secured to reduce the risk of fire and electric daze.

Stride 31 : Install Strain Relief

• Use a UL listed or CSA approved strain relief to secure the electrical wiring to the water heater.

Step 32 : Plough Ability ON

• Turn power ON at the circuit breaker (or supplant fuses).

• It may take several hours for a tank of cold water to oestrus up. If you have no hot h2o after ii hours, refer to the troubleshooting section.

Step 33 : Install Insulation on the Water Pipes

• Install insulation (or heat tape) on the h2o pipes, especially if the indoor installation area is subject to freezing temperatures.

• Insulating the hot h2o pipe tin increase energy efficiency.

Step 34 : Adjusting the Temperature

• The thermostat(s) on this water heater have been factory set to approximately 120°F to reduce the adventure of scald injury. You may wish to gear up a higher temperature to provide hot water for automatic dishwashers or washing machines, to provide more than hot h2o capacity and to reduce bacterial growth.

• WARNING! Because of the increased risk from scalding, if you set the water heater's thermostat(s) higher than 120°F, Thermostatic Mixing Valves at each signal of use are recommended to reduce the chance of scalding.

• Check water temperature at several points of use in your home (for example, bathtub faucet, shower, or lavatory sink) and adjust the Thermostatic Mixing Valves as needed.

• If you practice wish to change the temperature, see Adjusting the Temperature in Standard Electric Troubleshooting.

Source: https://www.aosmithatlowes.com/support/help/installing-the-new-water-heater/2

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