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-  a mounting tube for welding, has a free tube section left to be welded to the burner plate. Pilot fixing inside the 

mounting tube as in p. 7.1. There are two lengths A available: 150 and 600 mm. 

 

4.  IGNITION  SOURCES FOR GAS PILOT  LIGHT-OFF.    (SETTING METHOD)

 

Sources  of  ignition in the  gas  pilot 

SP-48

 are electrical high energy spark  igniters  (HESI)  or  high  tension igniters 

(HTI) equipped with the ignition rods of outer diameter 16 mm and coaxial electrode arrangement (see Fig. 3):

 

-     for  the  high  energy  spark  igniter  (HESI):  this  type  of  device  creates  single  sparks  of  a  high  energy  

of about 12 J. With frequency of 4 to 5 sparks per second it ensures reliable ignition of a gas/air mixture  under 
all conditions. The secondary circuit voltage is nominally 2,000 VDC at primary supply 230VAC or 110 VAC,

 

-     for  the  high tension igniter (HTI): this type of  device creates an  electrical arc  of  low  energy  which allows  for 

ignition  of  a  gas/air mixture  in  clean  environment  and  repeatable  conditions. The secondary circuit  voltage  is 
8,000 VAC at primary supply 230VAC or 110 VAC.  

Using the Fireye High Tension Igniter, the end of the rod tip should be placed at a distance of 10 mm back from the 
swirler-stabilizer (see Fig.1). In case of the High Energy Spark Igniter, the rod tip should be placed further back  ~ 
50 mm back from the swirler-stabilizer.  

It  should  be  noted  that  the  rod  tip  positioning  against  the  swirler-stabilizer  plate  in  the  pilot  gas  part 
assembly  (pos.  1  on  Fig.  1)  should  be  done  outside  the  air  tube  only  (do  not  install  the  rod  in  the  gas  head 
already mounted in the air tube). Only after proper rod positioning, should the rod be fixed by tightening the 
rod holding gland and the whole gas assembly with igniter rod inserted into the air tube pos. 4.  

The rods of both types of devices are mounted in gas head by means of a holding gland 1/2"BSP. 

The ignition device is not in gas pilot scope of supply. It is normally specified and ordered separately. 

 

FIGURE 3. 

Gas pilot type SP-48-

NG/PG

-FD with examples of electrical ignition devices

 

 

 

 
 
 

 
 
 

 
 
 

 
 
 

 
 
 

 
 
 

 
 
 
 
 
 
 
 
 

 
 

 
 
 

Gas Pilot type SP-48-NG/PG-FD-xxx
with HTI igniter rod type HTSS-xxx-J (Spark & Sense) for safe area

HESI igniter rod for safe area

HESI igniter rod for Zone 1 Exd

 HTI igniter rod type HTSS-xxx-CEX for Zone 1 Exd (Spark & Sense)

HTI igniter rod type HTSS-xxx-J-CEX with j. box for Zone 1 Exd (S&S)

ignition point

 

Summary of Contents for SureFire II SP-48-NG-FD

Page 1: ...d each unit is checked and tested before dispatch Acquaintance with the following instructions and strict attention to the indications reduce the possibility of equipment failure to a minimum and ensu...

Page 2: ...xits the main nozzle at the outlet of the air tube The main flame then stabilizes in the primary combustion zone at the outlet of the air tube The swirler stabilizer plate and holes in air tube provid...

Page 3: ...he Fireye High Tension Igniter the end of the rod tip should be placed at a distance of 10 mm back from the swirler stabilizer see Fig 1 In case of the High Energy Spark Igniter the rod tip should be...

Page 4: ...ling the pilot burner please follow the rules below 6 1 Use pilot only for its intended purpose 6 2 At the time of installation operation and maintenance follow the procedures described in the instruc...

Page 5: ...he burner plate with a diameter slightly larger than the diameter of the mounting tube b The mounting tube for welding slide the mounting tube in the hole and set it in the correct position insertion...

Page 6: ...tors may be used c To ensure a long and trouble free operation of the pilot it should be kept clean Check the condition of the gas pipe and if the orifices are not blocked Remove all buildups Hoses sh...

Page 7: ...flame stabilizes at the end of the air tube and reaches a blue yellow color If the airflow is too low the end of the air tube may start to glow it starts to glow at 400 500 C as the main flame burns i...

Page 8: ...the flame after trial for ignition the valves are closed and electrical igniter is switched off i Eventual repeating of trial for ignition sequence depends on the application Details of sequence timin...

Page 9: ...does not operate correctly check the following a All manual gas valves on gas supply line were open and there is gas available b All valves in the supply line are functioning properly c The preset gas...

Page 10: ...intenance of igniter contrary to the instructions in the user manual unauthorized igniter modifications or repairs made by unauthorized personnel use of components or spare parts other than original 1...

Page 11: ...ght 3 0 m ins length The Table 2 below shows Part Numbers of gas igniter mounting tubes and spare parts Table 2 SureFire II Pilot Mounting Tubes Spare Parts Part No Description SP 48 MTF Mounting Tube...

Page 12: ...12 APPENDIX No 1 The Pilot capacity vs gas pressure graphs standard version Remark The real measured capacity may differ by 5 depending on a particular pilot and measurement conditions...

Page 13: ...us pilot on a sample main burner with gas spuds and central oil or gas gun vertical mounting The pilot air tube tip can be mounted in the throat or in the swirler Pilot tip cannot extend beyond the he...

Page 14: ...nd especially refinery gas Refinery Off Gas needs additional engineering and testing because their gas compositions and calorific values are different than these of NG PG and LPG taken for gas pilot d...

Page 15: ...5 cubic foot ft3 Air flow rate 1 cubic metre hour m3 h x 0 589 standard cubic foot min SCFM Weight 1 kilogram kg x 2 2046 pound lb Pressure 1 kilopascal kPa x 6 895 pound square inch gauge psig x 4 01...

Page 16: ...is found defective in material or workmanship or which otherwise fails to conform to the description of the product on the face of its sales order THE FOREGOING IS IN LIEU OF ALL OTHER WARRANTIES AND...

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