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MAXFire

®

 Series 100 Gas Igniters Manual 

372001-04 Rev. C 
 

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 

Содержание MAXFire 100 Series

Страница 1: ...MAXFire Series 100 Gas Igniters Manual Publication 372001 04 Rev C...

Страница 2: ...ys 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 Forne...

Страница 3: ...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 S...

Страница 4: ...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 conf...

Страница 5: ...iew 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 appl...

Страница 6: ...pendent 5 to 10 MMBtu hr 10 psig 11 to 15 MMBtu hr 15 to 20 psig 5 10 and 15 MMBtu hr 15 psig 20 and 25 MMBtu hr 25 psig 25 to 50 MMBtu hr 15 to 25 psig Gas inlet port NPT NPT 1 NPT 1 NPT 2 NPT Coolin...

Страница 7: ...xercise extreme care when the power unit is open Refer to the HESI Service Manual for safety instructions for HESI equipment 7 Ensure that no voltage is present prior to disconnecting any terminations...

Страница 8: ...plane through the position of the main burner fuel nozzle 3 Seal weld the mount tube to the burner front plate On some older installations where cast iron plates must be penetrated a steel flange or...

Страница 9: ...During installation tap off the gas header from the top or side to help prevent contamination 2 Install gas pressure regulators in the gas headers to ensure that the specified pressure is maintained a...

Страница 10: ...__ Adjust the cooling combustion air manual valve to supply proper airflow reference Specifications section of this manual _________ Adjust the pressure regulator on the igniter gas header to obtain t...

Страница 11: ...ion Figure 3 and is producing sparks If the HESI or HTSI fails to generate sparks refer to the HESI or HTSI Service Manual for additional guidance on fault isolation The two fuel orifices in the orifi...

Страница 12: ...e guide tube every 12 months or during a scheduled boiler outage and examined as follows 1 Close the manual gas shutoff valve in line with this igniter 2 Disconnect the gas line from the inlet to the...

Страница 13: ...d in accordance with these RMA instructions To issue an RMA Forney must have the following information List of equipment to be returned by stock number model number Reason for return Company name and...

Страница 14: ...replacement parts that should be in the customer s stock for system startup and the first year of operation Replacement parts should be ordered as necessary to maintain the suggested stock of spare p...

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