Tankless Water Heater Installation Plumbing and Gas Connections
How to Install a Gas Water Heater · Install Earthquake Straps · Connect the Water Supply · Install the Vent Hood · Install the Vent Piping · Install the Gas.
Connect the Gas Supply Before connecting the gas line, clean all threads with a wire brush and rag. Apply gas-rated thread seal tape or piping compound to the threads of the black pipes as you connect them. If you are Assemble and tighten each fitting with two pipe wrenches. Install the union.