American Water Heater DCG - Manual (Page 15)

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Gas Pressure Testing
Important: This water heater and its gas connection
must be leak tested before placing the appliance in
operation.
• If the code requires the gas lines to be tested at
a pressure of 14” W.C. or greater, the water
heater and its manual shut-off valve must be
disconnected from the gas supply piping
system and the line capped.
• If the gas lines are to be tested at a pressure
less than 14” W.C., the water heater must
be isolated from the gas supply piping system
by closing its manual shut-off valve.
U.L. recognized fuel gas and carbon monoxide(CO)
detectors are recommended in all applications and
should be installed using the manufacturer’s instruc-
tions and local codes, rules, or regulations.
Note: Air may be present in the gas lines and could
prevent the burner from lighting on initial start-up. The
gas lines should be purged of air by a qualified service
technician after installation of the gas piping system.
Explosion Hazard
Have a qualified service technician make
sure L.P. gas pressure does not exceed
13” water column.
Failure to do so can result in death,
explosion, or fire.
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