AAON RN-140 - Manual (Page 56)

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Figure 31 - Example 6-25 and 30 ton through the Base Gas Piping
Leak Testing
All components of gas supply system,
including manual shut off valves and the
piping in the interior of the unit, should be
leak tested with a soap solution before
operating the appliance and at least on an
annual basis thereafter.
Do not use open flame or other
source of ignition for leak testing. Fire
or explosion could result causing
property damage, personal injury, or
death.
DANGER
LEAK CHECK GAS PIPE
The gas pipe in the unit should be
checked for leaks before startup.
Leak checking is the responsibility of
the
installing contractor. All
connections should be checked for
leaks
annually after installation.
Failure to leak check could result in
fire, explosion, or other hazardous
situations.
DANGER
Some soaps used for leak detection
can be corrosive to certain metals.
Rinse piping thoroughly after leak
test has been completed.
CAUTION