Fireye SureFire 20, Manual

1

®

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.

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 

REF

153.9 (6.06)

REF

1.69
REF

“L” REF

(1.88)

O.D. REF

(2.94)

74.7

QUICK-
RELEASE
FLANGE
CLAMP

TO HEI

CONNECTING

CABLE

HEI SPARK

ROD
ASSEMBLY

GAS PILOT
ORIFICE

GUIDE
TUBE

47.8

SIGHT
PORT

COMBUSTION
COOLING
AIR HOSE
CONNECTION

HEI SPARK ROD TIP
MUST BE FLUSH WITH
FURNACE SIDE OF
BAFFLE PLATE

BAFFLE 

1/2" NPT

GAS HOSE

CONNECTION

DIMENSIONS IN MM (INCHES)

PLATE

GAS

TUBE

DIMENSIONS mm (in)

3/4" NPT

SF-100

APRIL 19, 2013