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53
Gas Supply Installation
Install the manual gas appliance shut-off valve to
the gas connection at the water heater. The shut-off
is supplied with the water heater.
Install a ground joint union or ANSI design-certified
semi-rigid or flexible gas appliance connector to
the open end of the manual gas appliance shut-off
valve. The (NFGC) ANSI Z223.1 and CAN/CSA
B149.1 codes mandate the use of manual gas
shut-off valves.
Install a manual gas supply line shut-off valve to
the end of the gas supply line.
Using the proper-size piping, fittings, and
components, build the gas supply line to the water
heater.
NOTICE:
The gas supply line should be a minimum of 3/4-
in. (1.9-cm) black steel pipe or other approved gas
piping material.
Install a sediment trap at the lowest portion of the gas
line�
The inlet gas pressure to the water heater must NOT
exceed 10�5 in� w�c� (2�6 kPa) for natural gas and 13
in� w�c� (3�2 kPa) for LP gas� For purposes of input
adjustment, the minimum inlet gas pressure (with main
burner on) is shown on the water heater rating plate� If
high or low gas pressures are present, contact your gas
supplier for correction�
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INSTALLATION INSTRUCTIONS
Gas Supply
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