
Product OverviewFeatures & Bene ts
High Energy Spark Igniter
e High Energy Spark Igniter (HESI) is a Class 3 Igniter used for direct
spark ignition of oil or gas igniters or small burners. Forney’s HESI provides a
highly reliable source of ignition for a wide range of industry igniters utilizing a
12 joule source of energy delivered to the spark tip (3 sparks per second) which
easily ignites the fuel.
e High Energy Spark Igniter consists of three major components: a
power unit, spark rod assembly and cable assembly.
e power unit is packaged in a NEMA-4 or 4X enclosure suitable for wall
mounting at the burner front as a standard. Additional enclosures are available
to meet speci c application demands. e power unit develops 12 joules
of energy delivered to the spark tip through the use of heavy duty electrical
components. It has a 50% duty cycle at temperatures up to 135°F ambient.
e spark rod is available in the standard rigid design or in a exible
con guration for use in a tilting tangential burner application. e spark rod
features a self-cleaning surface-gap spark tip that is easily replaceable via a
threaded connection. Both rigid and exible spark rods can be provided with an
optional retraction assembly to allow the spark tip to be inserted and retracted
from the ring position.
e cable assembly consists of heavy duty 12-gauge, 3,000-volt wire
sheathed in a ½ inch exible conduit terminated with quick release, military-
grade connectors.
Standard designs are available for both Class I Div 2 and Class I Div 1 area
applications. e ATEX HESI is ATEX Exd IIC T6 approved.
• NON-FOULING SPARK TIP
The surface gap spark tip emits a self-
cleaning, highly reliable, 12 joule spark even
in the presence of moisture, oil and carbon
deposits.
• R
EMOVABLE SPARK TIP
The spark tip completely detaches from the
spark rod through a threaded connection.
Replacement of the spark tip is quick and
easy.
• A
PPLICATION FLEXIBILITY
Standard, flexible and retractable HESI
models are available to fit a variety of igniter
or burner types.
• C
OST EFFECTIVE SOLUTION
Proven technologies at an affordable price.
Pre-packaged, pre-engineered product min-
imizes cost and lead time.
• S
AFE OPERATION
Heavy duty, UL approved flexible cable
connects the power unit to the spark rod
assembly ensuring operator safety.
Forney’s High Energy Spark Igniter
(HESI) provides a highly reliable, non-
fouling source of ignition for oil or gas
igniters or small burners.
Forney Corporation • 3405 Wiley Post Road • Carrollton, TX 75006 • 800-356-7740 • Fax 972-458-6650 • www.forneycorp.com
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