Tips for installing tankless water heaters

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Tankless Water Heater Installation Tips

Gas Piping:

Most tankless heaters require a 3/4-inch gas line. The average tank-type heater normally uses ½-inch supply lines. Adapting the existing 1/2-inch supply line to the tankless heater will choke the fuel supply and limit the water heater output.  If the heater's Installation Manual says "3/4-inch supply line," that means all the way back to the gas pressure regulator.

A small safety override regulator on the gas inlet is located on most of these heaters. This is a back up for as well as an addition to your standard regulator at the tank or gas entrance. This secondary regulator is the means for adjusting gas flow at higher altitudes. The gas inlet is located at the bottom center for all tankless heaters.