Horn Igniter0 pages

Horn Igniters
Forney’s horn igniter offers reliable single or dual fuel ignition and warm-up for tangentially fired
burners and is designed for maximum flame stability and detection.

Product Overview

Features & Benefits

The Forney horn igniter is used on tangentially fired boilers

•t I gniter Capacity

for burner ignition and warm up, typically as a Class 2 igniter.
Depending on customer needs, Forney offers either a single or
dual fuel horn igniter. The single fuel horn igniter fires either oil
or gas. The dual fuel horn igniter fires either oil or gas without
a change of equipment, allowing for a quick and effortless
change over of fuel.
Both horn igniter assemblies consist of a mounting plate, an
oil or gas gun for the single fuel horn igniter or a combination
oil and gas gun for the dual fuel horn igniter, a High Energy
Spark Igniter (HESI), a combustion air tube, an optional flame
detector, and a horn.

The major components are fastened

to the igniter front plate with easily removable connections
to simplify maintenance. The oil and gas connections utilize
stainless steel braided hoses and optional quick disconnect
couplings.
The optional flame detector is mounted on a 1” NPT sight
tube, which provides an unobstructed view of the flame
inside the horn. Since the detector is mounted to the
igniter windbox, it does not require cooling air.

Up to 4 MBtu/hr for ignition and/or
support of main gas, oil or coal burners
and up to 15 MBtu/hr with an auxiliary gun.
Depending on burner capacity, the horn
igniter is capable of supporting Class 1 or 2
operations.

•t D ual Fuel Capability

The single fuel horn igniter fires either
oil or gas; the dual fuel horn igniter fires
either oil or gas without any change of
equipment.

•t S table Flame

Combustion air is evenly distributed
throughout the horn for reliable operation;
Forney’s design does not include an eddy
plate, thus reducing coke buildup and
overheating.

•t Optional Flame Detection

The flame detector senses flame inside
the horn and discriminates from flames
outside the horn.

•t Reliable Ignition

The High Energy Spark Igniter (HESI)
is fixed at the most efficient light-off
position for repeatable ignition.

On retrofit applications, the existing horn (diffuser) may
be reused, if it is not damaged or deteriorated. As a
result, the installation requires only replacing the front
plate and internal hardware, minimizing costs.

Forney Corporation • 16479 North Dallas Parkway, Suite 600 • Addison, TX 75001 • 800-356-7740 • www.forneycorp.com