Press and hold down the reset button on the control box for 60 seconds after the pilot ignites. This means installing a new water heater, the installer has to cut the pipe the broken heater connects to and then install the cold water shut off valve and a union. Align the water heater so there’s easy access to the burner and controls. Step 4 – Decide on the Location of the Tankless Heater. Here are the steps: Use pliers to remove the thermal coupling from the gas valve then install the automatic shutoff valve coupling in its place (Image 1). If your water heater tank has an excessive amount of sediment build-up, the drain valve may clog. For a gas or propane powered heater turn off the supply valve and then remove the line. ", Step 2: Check your local code for requirements. This will make it easier to prep for the solder connection later. Local store prices may vary from those displayed. Follow the manufacturer’s guidelines and local water heater installation code requirements. Check for leaks on each end of the hot and cold flexible water lines while the tank is filling. Turn the lower dial to your desired water temperature. Insert one end of the adjustable vent pipe into the water heater vent hood and begin attaching the other pipe sections. I am likely going to get the Rheem 12 year 50 gallon tank at Home Depot. Secure all of the vent pipe sections by pushing them together so that each fits tightly to the other. Gas water heaters use gas fuel to increase the temperature of the water. However, if you want to save a little money and achieve a feeling of accomplishment, installing your gas water heater is a great DYI project. If you choose to drain the tank while the water in it is still hot, use extreme caution. If you are installing a new water heater, you have a number of choices for type, size and power source. If you are not 100% confident installing a gas water heater, Lowe’s recommends that you hire a professional. Use of this site is subject to certain Terms Of Use. Disconnect supply line from old water heater. Hold a lit fireplace match or barbecue lighter to the pilot access opening. Open a hot water faucet, this will alert you that the tank is full. When using a professional installer, make sure they remove the old water heater as part of their service. Let them cool before installing them onto the heat trap fittings. Turn off the water supply to the water heater. Make sure the hot water faucets are still open and turn on the water supply. Fail to Install Shut Off Valves Correctly. Heat the fitting and solder. Be sure to check your water heater manufacturer manual for the correct diameter. Installing a tankless water heater by yourself is especially discouraged since new gas and water supply lines often need to be installed. Apply soldering paste and assemble. Others have a sight glass that will allow you to visually check if the flame caught. 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