Forney MAXFire 100 Series User manual

MAXFire®Series 100 Gas Igniters Manual
Publication 372001-04 Rev. C

MAXFire®Series 100 Gas Igniters Manual
372001-04 Rev. C
ii
INTRODUCTION
This manual contains information for the MAXFire®Series 100 Igniter from Forney Corporation, 16479
North Dallas Parkway, Suite 600 Addison, TX 75001.
All personnel should become thoroughly familiar with the contents of this manual before
attempting to install, operate or maintain the MAXFire®Igniter system. Because it is virtually
impossible to cover every situation that might occur during operation and maintenance of the
equipment described in this publication, personnel are expected to use good engineering judgment
when confronted with situations that are not specifically mentioned herein.
The user should update this manual whenever significant changes are made to the system. To be of value,
the manual must always reflect the latest configuration of the equipment. It should be noted, however,
that Forney Corporation will furnish updated pages only if Forney authorizes a modification and
accomplished under Forney supervision.
PROPRIETARY NOTICE
The contents of this publication are proprietary data of Forney Corporation. Reproduction or use of any
part of the publication for purposes other than the support of the equipment for which it is published is
permissible only if expressly authorized in writing by Forney.
Additional copies of this publication may be purchased from Forney. When ordering or
requesting cost information, refer to the publication number appearing on the title page. Address
to the attention of the Sales Department, Forney Corporation, 16479 North Dallas Parkway, Suite
600 Addison, TX 75001.
Revisions
Revision
Date
Comments
A
05/04/2010
Initial Release
B
10/25/2010
Updated Capacity Rating for MAXFire 135
C
02/09/2015
Update logos, contact info, Spec table-MaxFire35 gas supply

MAXFire®Series 100 Gas Igniters Manual
372001-04 Rev. C
iii
Table of Contents
Section 1 Description....................................................................................................1
1.1 Spark Ignition Source.......................................................................................................................2
1.2 View Port..........................................................................................................................................2
1.3 Mount Tube......................................................................................................................................2
Section 2 Specifications...............................................................................................3
Section 3 Safety ............................................................................................................4
Section 4 Installation ....................................................................................................5
4.1 Mount Tube / Guide Tube................................................................................................................5
4.2 Fuel and Air Piping...........................................................................................................................6
Section 5 Commissioning ............................................................................................7
5.1 Igniter Flame Detection....................................................................................................................7
Section 6 Troubleshooting...........................................................................................8
Section 7 Maintenance..................................................................................................9
7.1 Guide Tube ......................................................................................................................................9
7.2 Igniter ...............................................................................................................................................9
Section 8 Storage........................................................................................................10
Section 9 Return or Repair Service ...........................................................................10
Section 10 Spare Parts ...............................................................................................11
Table of Figures
Figure 1-1 MAXFire® Gas Igniter AssemblyGuide Tube Assembly........................................................1
Figure 1-2 Typical MAXFire® Mount Tube Assembly..............................................................................2
Figure 4-1 Igniter Tip Arrangement..........................................................................................................5
Figure 4-2 Typical Fuel Piping Arrangement ...........................................................................................6
List of Tables
10-1 Recommended Spare Parts List....................................................................................................11

MAXFire®Series 100 Gas Igniters Manual
372001-04 Rev. C
1
Section 1 Description
The MAXFire®gas igniter is a versatile and reliable source of ignition energy for oil, coal, or natural gas
burners. It is a self-contained unit that features a stable and clean-burning flame, repeatable fuel ignition,
low maintenance (no moving parts), and low combustion/cooling air requirements.
Depending on the burner capacity, the MAXFire®gas igniter may be sized for use as an NFPA-rated
Class 1, Class 2, or Class 3 igniter. Class 1 igniters are used for burner light off and support. Class 2
igniters are used for light off and support under prescribed light off conditions. Class 3 igniters are used
for light off only and are not intended for warm-up or support.
MAXFire® igniters are available in a variety of hardware configurations to fit the customer’s installation
requirements and operating preferences. In addition to the standard assemblies, other capacities can be
provided on request.
The major components of the igniter assembly are a guide tube, ignition source, and view port. Figure
1-1 illustrates a typical arrangement of the MAXFire®igniter assembly.
Figure 1-1 MAXFire® Gas Igniter AssemblyGuide Tube Assembly
Guide tube lengths are available from 14 to 180 inches in 2-inch increments. The guide tube assembly
houses the following major parts of the igniter:
Gas tube
Spark Ignition Source
Orifice tube assembly

MAXFire®Series 100 Gas Igniters Manual
372001-04 Rev. C
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1.1 Spark Ignition Source
The igniter port of MAXFire®igniter can be fitted with:
Forney High Energy Spark Igniter (HESI Series 90 or Series 90EC for European applications)
High Tension Spark Igniter (HTSI)
Refer to the service manual for the HESI Series 90, HESI Series 90EC or HTSI for more detailed
information.
1.2 View Port
The standard MAXFire®igniter includes an integral view port through the igniter head.
CAUTION: Forney does not recommend the use of the view port for flame detector sighting. If this
location is utilized, Forney’s initial start-up procedure should be adhered to in its entirety. Reference
Section 5 Commissioning.
1.3 Mount Tube
In most applications, the MAXFire®igniter is mounted on a burner through a mount tube.
The mount tube (Figure 1-2) is welded to the burner front-plate and supports the igniter assembly. The
igniter guide tube slides into the mount tube and is secured in place by a split clamping ring (squeeze
collar) that is bolted or welded to the mount tube. The squeeze collar also serves as a packing gland
follower.
Figure 1-2 Typical MAXFire® Mount Tube Assembly
MAXFire®
Model
Mount Tube Outside
Diameter
110
2.13”
130
3.5”
135
4.0”
140
4.5”
150
5.5”