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1. INTRODUCTION
This Instruction Manual contains a description of the type SureFire II™ SP-48-NG/PG-FD gas pilot construction,
operation principle and the instructions for installation, start-up and service, including the industrial health & safety
recommendations.
The SP-48-NG/PG-FD-xxx (48 mm outer diameter, NG - Natural Gas or PG - Propane Gas or LPG, FD - Forced
Draught) gas pilot is a reliable and effective source of ignition for oil and gas burners.
A sample of Pilot Part Number for Natural gas is "SP-48-NG-FD-xxx", for Propane gas is "SP-48-PG-FD-xxx"
where "-xxx" is the insertion length "L" from 0.5 to 3.0 metres (see Appendix 1 – the pilot capacity vs. gas pressure
graphs for Natural gas and Propane). For other Fuel gas types or capacity ranges – see p. 11 Ordering Information
for Special Pilots Part Numbering approach.
The pilot is constructed of high quality materials and 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 ensure safety during normal operation.
2. OPERATION PRINCIPLE AND TECHNICAL SPECIFICATION
Unit construction provides
air. No moving parts ensure long, trouble-free operation with low maintenance costs.
SureFire II™ Pilot
SP-48-NG/PG-FD can operate as an intermittent (light-off), or as a continuous pilot.
Gas pilot type SP-48-NG/PG-FD.
FIGURE 1.
Detail B
Igniter rod mounting bracket
2:1
Bleed orifice
Gas divider with
main gas orifice
Gas tube
Electrical Igniter rod of OD 16mm
(out of the pilot scope)
a stable flame, ignition repeatability, with low demand for combustion and cooling
View C-C
Sight port or
mounting hole with
stop plug 1/2"BSP
Main orifice gas tube
Gas inlet 1/2" BSP
HESI igniter rod
6
3
5
- rod gland 1/2"
C
C
Gas inlet
1/2" BSP
~ 112 mm
~ 188 mm
SP-48-NG/PG-FD
HTI igniter rod
Spark & Sense
Rod mounting
hole with gland
1/2"BSP
2
4
Detail B
Air inlet
3/4" BSP
HTI igniter rod tip
Spark & Sense
®
MAY
SureFire II™
Forced Draught
Gas Pilot type
Instruction Manual
~10 mm
1
~50 mm
L
View A-A
Swirler-stabilizer plate
Main orifice gas tube
SF-600
15, 2019
A
A
1
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Summary of Contents for Fireye SureFire II SP-48-NG-FD
- Page 1 ® SF-600 15, 2019 SureFire II™ Forced Draught Gas Pilot type SP-48-NG/PG-FD Instruction Manual 1. INTRODUCTION This Instruction Manual contains a description of the type SureFire II™ SP-48-NG/PG-FD gas pilot construction, operation principle and the instructions for installation, start-up and service, including the industrial health & safety recommendations.
- Page 2 The orifice-stabilizer assembly is optimized for Natural gas or Propane gas/LPG. In case of other Fuel gas type or other capacity needed contact Fireye as this may need the pilot construction changes - see p. 11 for Special Pilots. Thanks to this principle of design, the pilot combustion zone is protected, the main combustion zone is outside the pilot, hence the air tube does not overheat and there is no need for retraction of the ignition device rod.
- Page 3 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.
-
Page 4: Technical Data
Material used for pilot construction all parts: 304/316 SS and heat-resistant steel 310/330 Notes: 1. If the above parameters are different than those required please contact Fireye 2. For Imperial Units please refer to the Appendix 4 Unit Conversion Table 3. -
Page 5: Installation
® 7. INSTALLATION During the installation, all components have to be protected from impact or bending. WARNING: DURING PILOT INSTALLATION THE RECOMMENDATIONS IN THE APPENDIX 2 SHOULD BE STRICTLY OBSERVED. SP-48-FD pilot’s air tube can be welded directly to the burner plate, or placed in the mounting tube (see Fig. 2). It should be noted that the distance from the gas head with mounting ring to the burner plate should be not less than 150 mm and insertion depth cannot exceed the “L”... - Page 6 ® Gas part assembly and air tube should be fastened by the mounting ring thread joint. Ensure that the ring gasket is correctly fitted in the gas head seat (see Fig. 4). The complete pilot (air tube) can be inserted into the mounting tube. In order to make the air tube slide-in easier, apply a small amount of high temperature resistant grease.
- Page 7 ® 8. PILOT START-UP, OPERATIONAL TESTS Before proceeding with the start-up and operational tests of SP-48-NG/PG-FD pilot check the following: 8.1 Gas and air installations are correctly mounted, tight and functionally checked, including: valves, flaps, strainers, fittings and joints (flanged and screwed), control and interlock devices. 8.2 Gas and air connections to the pilot are made in accordance with the above instructions and the assy drawing.
-
Page 8: Operation
® 9. OPERATION After installing and completion of pilot start up and tests SP-48-NG/PG-FD is ready for operation. General description of activities performed by the burner/boiler control system or manually by operator: 9.1 Preparation of the furnace/boiler for firing up. 9.2 Opening of air to the burner and pilot. -
Page 9: Inspection And Maintenance
® 10.1 INSPECTION AND MAINTENANCE SP-48-FD pilot because of its simple design does not require complicated maintenance procedures. Checking and cleaning of gas tube and orifice-stabilizer assembly: Close the manual gas valve and disconnect the pilot gas line. Disconnect the ignition rod electric supply cable. Unscrew the mounting ring. - Page 10 ® 11.2 In case of air tube wear or damage: – if air tube or mounting ring has to be replaced - order a replacement air tube (with mounting ring) of length “L” – prices on request only, – if just the end of air tube is eroded - cut 200 mm of the tube tip, order and weld spare part P/N SP-48-END - replacement air tube end, length 200 mm, SS310/330.
-
Page 11: Ordering Information
Part Number in such case is SP-48-ZYY-F-xxx where: “Z” is capacity range e.g. S-small, M-medium, L-large or possibly others, “YY” is the specific Project Number given by Fireye after analyzing the Proposal Data Sheet, “F” is Forced draught, “xxx” is the length L. - Page 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 ® APPENDIX No 2 Proper position of the SureFire II™ SP-32 and SP-48 Pilots on burners Appendix shows a sample of typical positions of gas pilots on two types of burners. Incorrect position too close to flame Atomized fuel cone Correct position SP-32, -48 Gas Igniter Oil or gas gun...
- Page 14 ® APPENDIX No 3 Proposal Data Sheet SureFire II™ Pilot - Forced Draught Gas Pilot Type SP-48-NG/PG-FD-xxx Please provide the following data before placing the Order for gas pilot: Information about End User — Plant Name: ........—...
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Page 15: Unit Conversion Table
® APPENDIX No 4 UNIT CONVERSION TABLE Quantity Metric Units Imperial Units x 0.003281 = foot [ft.; ’] x 0.03937 = inch [in; ”] Length 1 millimetre [mm] x 3.281 = foot [ft; ’] x 39.370 = inch [in; ”] 1 metre [m] Volume 1 cubic metre [m... - Page 16 Fireye warranty, as stated in its General Terms and Conditions of Sale, pertains only to the Fireye products and not to any other equipment or to the combined system or its overall performance.
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