SUREFIRE™ IGNITERS   

High Energy Igniters (HEI) are Class 3 igniters used for direct spark ignition of oil or gas igniters and small burners  Features: 

• Non-fouling spark tip, self-cleaning, highly reliable.Produces 
a 12 joule spark even in the presence of moisture, oil and 
carbon deposits. 
• Removable spark tip. Replacement is quick and easy. 
• Flexible cable connects the power pack to the spark rod 
assembly ensuring operator safety. 
• Standard and retractable HEI models are available to fit a 

variety of igniter or burner types. 

The 12 joules of power delivered to the spark tip (3 sparks per second)
easily ignites the fuel.
The HEI igniters consist of three major components: a power pack, a
spark rod assembly and a cable assembly.
The power pack is packaged in a NEMA-4 enclosure for wall mounting
at the burner front. The power pack develops the 12 joules of power
delivered to the spark tip through the use of heavy duty electrical components.
It has a 100% duty cycle at temperatures up 130°F ambient.
The spark rod features a self-cleaning surface gap spark tip that is easily
replaceable through a threaded connection. The spark rods can come with
an optional retraction assembly to allow the spark tip to be inserted and
retracted from the firing position if necessary.
The cable assembly consists of heavy duty 12-guage, 3,000 volt wire sheathed
in a 1/2 inch flexible conduit terminated with quick release, military-grade connectors.
Refer to Bulletin SF-1 for complete information

• NONFOULING SPARK TIP –
The surface gap spark tip produces a self-cleaning,
highly reliable, 12 joule spark even in the presence of
moisture, oil and carbon deposits.
• REMOVABLE SPARK TIP –
The spark tip completely detaches from the spark rod
through a threaded connection. Replacement of the
spark tip is quick and easy.
• SAFE OPERATION –
Heavy duty, UL approved flexible cable connects the
power pack to the spark rod assembly ensuring operator
safety.
• APPLICATION FLEXIBILITY –
Standard and retractable HEI models are available to fit a
variety of igniter or burner types.
HIGH ENERGY IGNITER SPECIFICATIONS
Igniter Class: Class 3 interrupted (special)
Approval: Factory Mutual
Input Voltage: 110 or 220 vac, 50/60 HZ
Output Energy: 12 joules per spark
Output Voltage: 2,000 vac
Spark Rate: 3 per second
Spark Rod Lengths: 14 in. (356mm) minimum
180 in. (4572mm) maximum
Spark Rod Diameter: 0.625 in. (16mm)
Spark Tip Type: Surface gap (aircraft)
Spark Tip Length: 8.5 in (216mm) or 27 in.
(686mm)
Spark Tip Resistance: 200 to 600 ohms (center electrode to
outer case)
Spark Tip Material: Stainless steel with a silicon carbide
insulator
Maximum Recommended
Tip Temperature: 1,000°F (538°C)
Power Pack Temperature Ratings: 0°F to 135°F (-18°C to 57°C)
Power Pack Enclosure: NEMA-4 cabinet (NEMA-4X optional)
Power Pack Dimensions: 10 in. high x 8 in. wide x 4.25 deep
(25.4cm x 20.3cm x 10.8cm)
Power Pack Mount Holes: 10.75 in. x 6.0 in. (27.3 cm x 15.2 cm)
Field Conduit Hole Diameter: 0.88 in. (2.2cm)
Power Cable: 12 gage, 3,000 v in 0.5 in.
(1.3cm) flexible conduit
Power Cable Lengths: 6 ft., 9 ft., 12 ft., 15 ft.
(1.8, 2.7, 3.7, 4.6m) 15 ft. is standard
Duty Cycle: 100% at temperature rating

T H E S URE F IRE M ODEL 20 G A S I GNITER PROVIDES RELIABLE
IGNITION ENERGY FOR MAIN GAS OR OIL BURNERS IN
EITHER NFPA C LASS 1, C LASS 2 O R C LASS 3
APPLICATION , DEPENDING ON THE BURNER CAPACITY .
These igniters easily retrofit into many types of burners due to their
size, BTUH capacity and their reliable operation.
The SureFire Gas Igniter consists of three major components: a guide
tube, a gas transport tube, and a High Energy spark rod. The guide tube houses
the spark rod and the gas transport tube, which are easily removed from the guide
tube for maintenance purposes, by releasing the “V” band retainer. No tools are required. Cooling/combustion
airflow is directed down the guide tube to support and maintain the primary combustion zone
during operation and to cool the igniter when it is out of service. The controlled mixture of fuel and air
inside the igniter guide tube at the primary combustion zone results in a highly reliable igniter.
The SureFire Gas Igniter is used with a High Energy Igniter (HEI) spark source (power pack) and
interconnecting cable, both ordered separately. The HEI produces a powerful 12-joule spark three times
per second at the primary combustion zone. The HEI spark tip is a nonfouling, surface-gap spark plug
that is replaceable as a unit by a threaded connection. The remaining HEI components consist of a
positioning rod (included with the Gas Igniter), power cable, and power pack (the cable and power pack
are ordered separately).
Optional equipment for the SureFire Model 20 Gas Igniter includes a mount tube, a combination mount
flange, a gas hose and a rubber air hose.
• C LASS 1, C LASS 2
O R C LASS 3 G A S
I GNITER –
Capacity 1.0 MBTU/hr.
• B URNER C OMPATBILITY –
The nominal 2” diameter allows
the igniters to fit into almost any
burner application.
• R ELIABLE O PERATION –
The protected primary combustion
zone ensures successful starts.
• F UEL F LEXIBILITY –
Capable of burning natural gas or
propane.
• C OOLING / C OMBUSTION
A I R –
12 SCFM airflow required.
• L O W M AINTENANCE – No
moving parts, a self-cleaning
spark tip and no tools required
to perform periodic inspection.
• I GNITION S OURCE –
12-joule High Energy Spark Igniter
(HEI) with screw-on replaceable tip.

GAS IGNITER SPECIFICATIONS

SureFire 20
Fuel: Natural gas/propane
Guide Tube OD: 1.88”
Mounting Tube OD: 2.13”
Capacity Rating (MBTU/hr.): 1.0
Fuel Supply Requirements (psig): 10 psig
Cooling/Combustion Air Supply: 12 SCFM@3”>windbox
Cooling/Combustion Air Pressure
(inches w.c. measured at the sight port): 0.5
Material of Construction: 304 Stainless steel (except for gas transport extension tube and HEI rod)
Cooling/Combustion Air Connection: 1”
Ignition Method: High Energy Igniter (HEI) 12 joule (all versions)
NFPA Class: 1, 2 or 3
Recommended Gas Hose Size: 3/4”
Gas Hose Connection Size (NPT): 1/2”
Gas Line Strainer (FNPT): 0.33”

HIGH ENERGY IGNITER SPECIFICATIONS

Approval: Factory Mutual
Output Energy: 12 joules per spark
Output Voltage: 2,000 vdc
Input Voltage: 110/220 VAC, +/- 10%, 50/60 Hz
Input Power: 110 vac (2-A fuse); 220 vac (1-A fuse)
Spark Rate: 3 sparks per second
Spark Tip Material: Stainless steel with a silicon carbide insulator
Maximum Recommended
Tip Temperature: 537.8°C (1,000°F)
Power Pack Temperature Ratings: -18°C to 57°C (0°F to 135°F)
Power Pack Enclosure: NEMA-4 approved cabinet (NEMA-4X optional)
Power Pack Dimensions: 10 in. high x 8 in. wide x 4.25 in deep
(25.4cm x 20.3cm x 10.8 cm)
Power Cable: 12 gage, 3,000 v in. 0.5 in. (1.3cm) flexible conduit
Power Cable Lengths: 6, 9, 12, 15 ft. (1.8, 2.7, 3.7, 4.6 m) 15 ft. is standard