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5. To facilitate any future maintenance, it is also recommended that an approved gas union fitting be installed in the supply line between
the shut-off valve and the ¾" female NPT connection on the water heater.
Figure 12 – Gas Line With Shut-Off Valve Detail
6. Test the gas pressure to make sure it meets the minimum standards and does not exceed the maximum standards of the water
heater.
7. Leak test the gas line pipe before placing the water heater in operation. Only use approved leak detector liquid solutions to check for
leaks.
8. Do not operate the water heater until all connections have been completed and the heat exchanger is filled with water.
Figure 13 – Natural Gas Piping Installation – NOTE: Capacity to be not Less than Total Capacity of Connected Appliances
Figure 14 – LP Gas Piping Installation – NOTE: Capacity to be Not Less than Total Capacity of Connected Appliances
WHL-004 REV. 12.17.14
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