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DESCRIPTION
The SureFire™ gas igniters are a versatile and reliable source of ignition energy for oil, coal, or nat-
ural gas burners. They are self-contained units and feature a stable and clean-burning flame, repeat-
able fuel ignition, low maintenance (no moving parts), and low cooling-/combustion-air
requirements.
The SureFire™ gas igniters are NFPA-rated as a Class 1, 2, or 3 igniter, depending on the applica-
tion: Class 1 igniters are used for burner light-up and support under any conditions; Class 2 igniters
are used for light-up and support under prescribed light-off conditions; and Class 3 igniters are used
for light-up only and are not intended for warm-up or support.
These igniters are provided with a durable High Energy Igniter (HEI) for repeatable light-off. Refer
to the HEI bulletin for detailed HEI information.
In most applications, the self-contained SureFire™ gas igniters are mounted in a burner through a
mounting tube. The major components of the SureFire™ gas igniters are the guide tube assembly,
and the HEI. Figure 1 shows the SureFire™ igniter assembly.
FIGURE 1.
SureFire Model 20 Gas Igniter Assembly
SIGHT
PORT
74.7
(2.94)
REF
QUICK-
RELEASE
FLANGE
CLAMP
TO HEI
CONNECTING
CABLE
HEI SPARK
ROD
1.69
ASSEMBLY
REF
1/2" NPT
GAS HOSE
CONNECTION
COMBUSTION
COOLING
AIR HOSE
153.9 (6.06)
CONNECTION
REF
3/4" NPT
Model 20 - 1.0 MBTUH
"L" REF
HEI SPARK ROD TIP
MUST BE FLUSH WITH
FURNACE SIDE OF
GUIDE
BAFFLE PLATE
TUBE
GAS PILOT
ORIFICE
BAFFLE
PLATE
DIMENSIONS IN MM (INCHES)
®
SF-100
APRIL 19, 2013
®
FIREYE
™
SureFire
Gas Igniter
DIMENSIONS mm (in)
47.8
(1.88)
O.D. REF
GAS
TUBE
1
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Related Manuals for Fireye SureFire 20
Summary of Contents for Fireye SureFire 20
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Page 1: Description
® SF-100 APRIL 19, 2013 ® FIREYE ™ SureFire Gas Igniter Model 20 - 1.0 MBTUH DESCRIPTION The SureFire™ gas igniters are a versatile and reliable source of ignition energy for oil, coal, or nat- ural gas burners. They are self-contained units and feature a stable and clean-burning flame, repeat- able fuel ignition, low maintenance (no moving parts), and low cooling-/combustion-air requirements. -
Page 2: Table Of Contents
TABLE OF CONTENTS DESCRIPTION ....................TABLE OF CONTENTS ................DESCRIPTION (continued)................SPECIFICATIONS..................SUREFIRE IGNITER SPECIFICATION PROCEDURE ......SUREFIRE MODEL 20 GAS IGNITER............SUREFIRE 20 ORDERING INFORMATION..........SAFETY......................INSTALLATION..................... COMMISSIONING ..................OPERATION....................TROUBLESHOOTING ................MAINTENANCE..................STORAGE..................... SUREFIRE MODEL 20 OUTPUT CURVE.......... -
Page 3: Description (Continued)
(See HEI bulletin for details.) View Port An integral view port is provided on the head of the SureFire™ igniter. SPECIFICATIONS SUREFIRE 20 Fuel Natural gas/propane Guide Tube OD 1.88”... -
Page 4: Surefire Igniter Specification Procedure
SUREFIRE IGNITER SPECIFICATION PROCEDURE A complete Fireye gas igniter assembly will consist of at least three part numbers, each ordered sep- arately. These include the SureFire 20 Gas Igniter, the High Energy Igniter (HEI) power pack, and the HEI interconnecting cable. - Page 5 AIR HOSE (Optional) Fireye can also provide a reinforced 1" ID rubber air hose with a 1" NPT nipple connection to air supply at one end, and hose clamps at both ends. The air hose is required to supply cooling/combus-...
- Page 6 FIGURE 3. SureFire 20 GAS IGNITER GASKET P/N 29-403 SUREFIRE 20 CLAMP P/N 13-382 14” (350mm) P/N SF20-XXX 2.13” (55mm)Dia BURNER FRONT PLATE CLOSE NIPPLE MOUNT TUBE P/N 35-309 P/N MT20 -XX (OPTIONAL) AIR HOSE 10’ (3.0m) P/N 59-495 8”...
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Page 7: Surefire 20 Ordering Information
Length in inches (014 through 180) Fireye SureFire in 2” increments 20 gas igniter EXAMPLE: Specify a SureFire 20 gas igniter - 72 inches long : Specify part number: SF20 – 072 SELECT OPTIONAL ACCESSORIES PART NUMBER SUREFIRE 20 MOUNTING TUBES MT20-004 Mount Tube 4”... - Page 8 PART NUMBER SUREFIRE 20 AIR HOSE AND GAS LINE ACCESSORIES 59-495 Air Hose, flexible rubber, 1”(I.D.) with 1” nipple, x 10 feet (cut to length on site) 35-309 Close nipple, 1/2” NPT stainless steel 10-211 Quick Disconnect Plug, male, 1/2” NPT...
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Page 9: Safety
® SAFETY Safety is the responsibility of each individual who installs, operates or maintains Fireye equipment. Fireye includes personnel safety as a basic design element of the SureFire igniter. Observe the following safety instructions prior to performing installation, operation, or maintenance: WARNING: Hazardous voltage is present and serious injury can occur. - Page 10 As a general rule, locate the SureFire™ tip 3 inches behind the burner fuel nozzle vertical plane. FIGURE 4. Typical SureFire 20 Mounting Tube MATERIAL: CARBON STEEL, RED PRIMER PAINTED 12.7 CLAMPING COLLAR (.50)
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Page 11: Commissioning
® Before tightening the mounting tube squeeze collar, rotate the guide tube, as necessary, to accept the cooling/combustion air flexible hose connection. Connect the cooling/combustion air flexible hose to the SureFire™ guide tube. FIGURE 5. Typical HEI Spark Rod Tip Location IGNITER GUIDE HEI SPARK TIP... -
Page 12: Operation
NOTE: Before proceeding, all “light-off” permissive conditions must be satisfied. Initiate a start command to the SureFire™ igniter while observing the fuel pressure. The SureFire™ igniter ignites within 10 seconds from the time the fuel valve opens. The base of the flame should be blue and may change to a bright yellow as the flame travels into the furnace. -
Page 13: Troubleshooting
® TROUBLESHOOTING If the igniter does not light, check the following: • All fuel supply valves, including manual valves, are open. • Regulated gas pressure is available to the igniter. • Any valves in the gas lines are functioning properly. •... -
Page 14: Storage
Using compressed air to clean the tip, blow out the gas lines, both forward and backward. Inspect and clean the primary orifice located upstream of the removable fixed orifice. Replace the removable orifice in its original location. High Energy Igniter Remove and inspect the spark rod assembly every 6 months or during planned boiler outage, per the HEI Service Manual. - Page 15 ®...
- Page 16 Fireye warranty, as stated in its General Terms and Conditions of Sale, pertains only to the Fireye products and not to any other equipment or to the combined system or its overall performance.
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