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ST-2 Pilot
Superior Performance In A Wider Range Of ConditionsCustomers worldwide look to John Zink Hamworthy Combustion
for innovative solutions they can count on. And for more than 80
years, we’ve provided industry-leading products proven in thousands
of installations worldwide. With the ST-2 Pilot, we’ve leveraged
that experience and expertise to design, develop and deliver robust
ignition, flame detection, and stable operation over a wider range of
operating conditions, pressures and fuels.
A Better DesignYears of experience and customer input helped us develop the most
state-of-the-art pilot design in the industry. + High energy igniter (HEI) and sealed flame rod assembly
+ 1/2” diameter igniter for maximum durability
+ Thicker flame rod for greater longevity
+ Covered ignition channel and flame rod channel to keep out debris
+ No external ceramic insulators
+ Can be removed for maintenance with pilot in operation
+ Upgraded premix venturi with a robust spud design
+ Air door not required
+ All stainless steel construction
+ Single configuration for combustion air temperature from ambient up to 800˚F
+ Retrofits into previous John Zink pilot mounting dimensions
+ Compact, head-mounted electronics
+ High Energy Ignition (HEI) exciter and flame detection circuitry in the same enclosure
+ Able to spark and detect flame simultaneously
+ Relay contact for flame detection
+ Contacts for 10 VDC flame signal strength indication
+ LEDs for power, flame detection and HEI sparking
+ NEMA, 4/7, explosion proof electronics enclosure
+ Accepts 100-240 VAC 50/60 Hz
Why We Developed The ST-2 PilotWe designed the ST-2 to meet the increasing
needs of industry, including:
+ Reliable light off after exposure to
moisture during furnace steam outs and
humidity
+ Dependable flame monitoring after
exposure to moisture
+ Robust ignition, flame detection, and stable
operation over a wider range of operating
conditions, pressures and fuels
+ Compatibility with 2” x 4” pilot opening for
easy retrofits
+ Minimized footprint on burner front plate
+ Low total installed costs of high energy
ignition and flame sensing electronics
Continuous innovation like the ST-2 Pilot is a vital part of our ongoing success. We invest heavily in facilities and experts. Our three research and development centers make up the largest and most advanced testing complex in the industry. These exclusive resources allow us to push innovation, gain expertise and measure performance in a full-scale industrial setting under near real-world conditions.
johnzinkhamworthy.com
Europe Middle EastAfricaIndiaRegional Headquarters
South AmericaRegional Headquarters
Koch Tecnologia Química Ltda.Av. Eliseu de Almeida, 2.960 – Butantã05533-000 – São Paulo – SPBrasil
T: +55 11 3740 5655
+John Zink International Luxembourg S.àr.l. Zone Industrielle ‘Riedgen’L-3401 Dudelange, Luxembourg T: +352 518991 F: +352 518611
++ John Zink Company LLC11920 East Apache StreetTulsa, Oklahoma 74116 United States T: +1 918 234 1800F: +1 918 234 2700
North AmericaInternational Headquarters
PB-13207©2015 John Zink Company LLC. JOHN ZINK HAMWORTHY COMBUSTION are trademarks of John Zink Company LLC. JOHN ZINK is a registered trademark of John Zink Company, LLC.
Asia-PacificRegional Headquarters
John Zink Asia-Pacific, a division of Koch Asia-Pacific, Inc. 4th Floor, Takanawa Muse Building, 3-14-13Higashi-Gotanda, Shinagawa-ku Tokyo 141-0022 Japan T: +81 3 4332 5550 F: +81 3 5423 1627
+
The ST-2 Pilot: Many Conditions. Many Fuels. Same Reliable Performance.
High moisture environments. Wide firebox pressure swings. Varying fuel composition. Many pilots can’t reliably ignite and
operate under such conditions. Our ST-2 pilot was designed specifically to perform in these extreme environments. The ST-2 pilot
is compatible with a wide range of fuels — from pure propane to high hydrogen — without any adjustments. Reliable performance
you can count on, in a compact stainless steel package with low installation costs. Let us prove our reliability to you.
Contact us today for more information on the ST-2 pilot.