Check to make sure your gas line is sized properly. Tankless
water heaters draw many more BTU's than a tank water heater, so
you will want to make sure your gas line is of the proper size
and the distance the gas line is run is not too long, so the
unit will function properly. Below are tables that show
the maximum gas line run by diameter for natural gas, propane
(LP) with black iron pipe and propane (LP) with copper tubing.
If any other applications are sharing the line or for more
specific information, please consult the National Code Fuel Chart.
Maximum length of black iron pipe run for Natural Gas
Mon-Fri 8-5pm (CT)
