Forney MAXFire 40 User Manual

IGNITERS

MAXFIRE 40 LOW PRESSURE GAS IGNITER

THEMAXF

IRE

40 LOWP

RESSUREGASIGNITER PROVIDES A RELIABLE SOURCE OF ENERGY FOR MAIN FLAME

IGNITION

,

FLAME STABILIZATION, AND LOW GAS PRESSURE APPLICATIONS

. Depending on the burner capacity, the

MAXFire can be used in a class 1 , class 2 , or class 3 application. This igniter can be easily installed

as a retrofit into most types of burners because of its size, capacity, and reliable operation.

The MAXFire Gas Igniter consists of four major components: a guide tube, a gas transport

tube, a spark rod, and a stainless steel diffuser for pilot stabilization. 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 a "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. The controlled mixture of fuel and air in the

primary combustion zone results in a highly reliable, stable igniter flame. While out of

service, this airflow cools the igniter and prevents debris from migrating into the end of

the guide tube.

The MAXFire Gas Igniter is provided with Forney’s HESI spark source. The HESI

produces a powerful 12-joule spark approximately three times per second at the primary

combustion zone. The HESI spark tip is a nonfouling, surface-gap tip which is replaceable

as a unit by a threaded connection. The MAXFire is also available with a High Tension

Spark (HTSI) source in place of the HESI. Optional equipment for the MAXFire Gas Igniter

includes mounting hardware, hoses, valves, and optical flame detector.

• LOW GAS PRESSURE APPLICATIONS

Provides 6 mmBtu/hr at 1.5 psig

(0.103 bar) gas pressure

• APPLICATION FLEXIBILITY

The protected primary combustion

zone ensures reliable operation.

• RELIABLE IGNITION

99% ignition rate in most

applications.

• COOLING/COMBUSTION AIR

Low cooling/combustion air

requirements.

• LOW MAINTENANCE REQUIREMENTS

No moving parts, a self-cleaning
spark tip and no tools required to
perform periodic inspection.

• DURABILITY

Heavy duty material and no moving
parts to wear out.

• COMPATIBILITY

Fits most existing mount tubes
minimizing retrofit installation costs.

• SPARK SOURCE OPTIONS

The highly reliable, nonfouling HESI
comes standard. HTSI provides high
performance at an economical price.

Forney Corporation

3405 Wiley Post Road
Carrollton, TX 75006 USA
Tel: [phone]
Fax: [phone]
www.forneycorp.com

IGNITERS

MAXFIRE SPECIFICATIONS

Fuel: Natural gas
Fuel Pressure: 1.5 psig (0.103 bar)
Maximum Length: 10 feet (304.8 cm)
Guide Tube Material: Carbon steel with 12 inches stainless steel at furnance end

MAXFire CAPACITY GUIDE TUBE COOLING AIR REQUIREMENT TIP

MODEL MBTU/HR OD (ABOVE WINDBOX) TYPE

40 6.0 4.0 inches 60 scfm @ 6 inches wc Straight nozzle

101.6 mm 1.7 m3/min @ 14.9 mbar

For other sizes and capacities consult the factory.

HESI SPECIFICATIONS

Input Voltage: 120 to 240 VAC 50/60 HZ
Output Voltage: 2000 VDC
Output Energy: 12 joules per spark
Spark Rate: 3 per second (approx.)
Duty Cycle: 50% at – 18 to 57°C (0 to 135°F)

HTSI SPECIFICA

TIONS

Amperage: 20 mA
Input Voltage: 120 to 240 VAC 50/60 HZ
Output Voltage: 6000 VDC
Input Current: 1.5 A (2-A fuse); 240 VAC @ 0.75A (1-A fuse)
Duty Cycle: 100% at temperature rating

TECHNICAL BULLETIN

PUBLICATION
#404006-18 REV 06/06

MAXF

IRE 40 LOW PRESSURE GAS IGNITER