Forney MAXFire 100 User Manual
MAXFire® Series 100 Gas Igniters
A UTC Fire & Security Company
MAXFire® gas igniters provide the most
reliable source of energy for main flame
ignition, flame stabilization, and boiler
warm-up.
Features & Benefits
Cla ss 1, 2 or 3 Gas IG nIter
•
Capacity range from 0.3 to 50 MBtu/hr.
app lICatIo n Fle xIbI lIty
•
The protected primary combustion zone
ensures reliable operation in multiple
environments.
rel Iable IGnItI on
•
99% ignition rate in most applications.
Coo lInG / Combu stIon aIr
•
Low cooling/combustion air requirements.
low maInte nanCe req uIrem ents
•
No moving parts, a self-cleaning spark tip
and no tools required to perform periodic
inspection.
Dur abIlIty
•
Heavy duty material and no moving parts
to wear out.
Product Overview
e MAXFire® Series 100 gas igniters can be used as a Class 1 , Class 2, or
Class 3 igniter, depending on burner capacity. e MAXFire® igniter is easily
installed as a retrofit into most burner types based on its size, capacity, and reliable
operation.
MAXFire® gas igniters consist of four major components: a guide tube, a
gas transport tube, a spark rod, and a stainless steel diffuser for pilot stabilization.
e 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, requiring no tools. Cooling/combustion airflow is directed down the guide
tube to support and maintain the primary combustion zone during operation. e
controlled mixture of fuel and air in the primary combustion zone results in a
highly reliable, stable igniter flame. While out of service, airflow cools the igniter
and prevents debris from migrating into the end of the guide tube.
MAXFire® gas igniters come standard with Forney’s High Energy Spark
Com patIbIl Ity
•
Fits most existing mount tubes minimizing
retrofit installation costs.
spa rk sour Ce op tIon s
•
The nonfouling HESI comes standard.
HTSI provides high performance at an
economical price.
Forney Corporation • 3405 Wiley Post Road • Carrollton, TX 75006 • 800-356-7740 • Fax 972-458-6650 • www.forneycorp.com
Igniter (HESI) as the spark source. e HESI produces a powerful 12-joule
spark approximately three times per second at the primary combustion zone. e
HESI spark tip is a nonfouling, surface-gap tip which is replaceable as a unit by
a threaded connection. Optional equipment for the MAXFire® includes a High
Tension Spark (HTSI) source in place of the HESI, mounting hardware, hoses,
flame rod and an integral or externally mounted optical flame detector.
MAXFire® Series 100 Gas Igniters
Primary Combustion Zone
Clamp
Guide Tube
Cooling/combustion Air Inlet
Gas Inlet
HESI
Specications
Fuel: Natural gas or propane
Minimum Length: 14 inches
Guide Tube Material: 10 & 30 - Stainless steel
35, 40 & 50 - Carbon steel with 12” stainless steel at furnace end
Pub # 404006-19
Rev 01/2011
MAXFire
Model
110 0.3 to 1.5 1 7/8” 1/2” 3/4” 23 @ 3 Straight 5-12
130 1.5 to 6.0 2 7/8” 3/4” 3/4” 45 @ 3 Straight or wide 5-12
135 5.0 to 15 3 1/2” 1 1/2” 1 1/2” 50 @ 6 Straight or wide 5-25
140 5.0 to 25 4” 1 1/2” 1 1/2” 80 @ 6 Straight or wide 5-25
150 10 to 50 5” TBD TBD 120 @ 6 Straight or wide 5-25
*scfm@inches w.c. above windbox
Capacity
MBtu/hr
Guide
Tube OD
Connections (NPT) Cooling Air
Gas Air
Requirement*
Nozzle
Type
HESI Specications
Input Voltage: 120 to 240 VAC, 50/60 Hz
Input Power: 120 VAC @ 1.5 A (2-A fuse); 240 VAC @ 0.75A (1-A fuse)
Output Voltage: 2000 VDC
Output Energy: 12 joules per spark
Spark Rate: 3 per second (approximately)
Duty Cycle: 50% at temp 0°F to 135°F (-18°C to 57°C) Ambient
HTSI Specications
Amperage: 20 mA
Input Voltage: 120 to 240 VAC 50/60 HZ
Output Voltage: 6000 VAC
Typical Fuel
Pressure (psig)
Duty Cycle: 100% at temperature rating
Forney Corporation • 3405 Wiley Post Road • Carrollton, TX 75006 • 800-356-7740 • Fax 972-458-6650 • www.forneycorp.com
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