104
Leak Testing
All components of gas supply system,
including manual shut off valves and the
piping in the interior of the unit, shall be leak
tested with a soap solution before operating
the appliance and at least on an annual basis
thereafter.
All gas fired heat exchangers are completely
tested at the factory before shipment. This
will remove nearly all of the oils that have
been used in the manufacturing process.
However, trace amounts may remain. When
performing the initial startup at the jobsite, it
is highly recommended that people or any
other living animals, which may be sensitive
to the residual odors or gases, NOT be
present in the conditioned space during the
startup. In all cases, including the initial
factory firing and testing, any of the gases
will be under the acceptable level of
concentration for human occupancy.
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.
Those sensitive to odors or gases
from trace amounts of residual oils
must NOT be present in the
conditioned space during the startup
of a gas fired installation.
The gas pipe in the unit shall be
checked for leaks before startup. Leak
checking is the responsibility of the
installing contractor. All connections
shall be checked for leaks annually
after installation. Failure to leak check
could result in fire, explosion, or other
hazardous situations.
Some soaps used for leak detection
can be corrosive to certain metals.
Rinse piping thoroughly after leak test
has been completed.
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