| To ensure safe and reliable
light off of any burner, a pilot that is stable and dependable under
adverse conditions is essential. Coen has developed a series
of pilots that provide reliable operation over a wide range
of heat release. |
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These pilots light immediately from the built-in-spark igniter during
the 10 second sparking period in the light off sequence.
Pilot Selection
Selection of a pilot is based on burner size and
is subject to application insurance regulations. For general practice,
it is recommended that the capacity of the pilot be at least 2.5 % of
the burner heat input at its low fire light off capacity. For example,
a 100,000,000 Btu/hr burner would normally be lit off at 20% of high fire,
or at 20,000,000 Btu/hr. Thus, the pilot would be sized for 500,000
Btu/hr capacity.
The capacities of Coen gas pilots can be found on
the chart below. Typically, the Fry-Lyter Pilot would be
selected for normal capacities (20,000,000-100,000,000 Btu/hr), while
the Hurricane Pilot is used for very high capacities, or where
low pilot gas supply pressure requires this larger pilot. The Hurricane
Pilot is available in two versions, depending upon capacity required.
The Ultra-Stable Pilot is typically utilized
on very large systems where large heat inputs are required.
However, it is also an excellent product for applications in adverse conditions,
where fouling of the electrode is possible and even likely. The
High Stability Pilot is typically utilized on duct burner applications,
where low oxygen conditions require a separate air source for reliable
ignition.
Coen Pilots...for Reliable Light off and Dependability.
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