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NEMA 4X, IP66
CLASS I, DIV 2, GROUPS A, B, C, D
CLASS II, CLASS III, DIV 2, GROUPS F and G
This bulletin is directed to the licensed boiler service technicians and professional combustion
engineers who are experienced in the installation and operation of Fireye flame safeguard
controls. Persons not experienced with Fireye flame safety products should contact the nearest
Fireye representative, or a qualified service group for assistance. IMPROPER INSTALLA-
TION OF THESE PRODUCTS MAY BE HAZARDOUS TO LIFE AND PROPERTY.
DESCRIPTION
Fireye Type 55UV5 scanners are self-checking, flame sensing devices. When powered by a compat-
ible, self-checking Fireye control, the scanners detect the presence or absence of flames which emit
ultraviolet radiation (UV). Typical fossil fuels which emit UV include natural gas, propane, meth-
ane, butane, kerosene, light petroleum distillates and diesel fuels. For burners firing steam-atomized
oil or pulverized coal, Fireye recommends the use of infrared (IR) scanners. Fireye offers a complete
line of infrared scanners best suited for these applications.
APPLICATION
When used with a Fireye amplifier, the 55UV5 scanner provides flame failure protection on single
and multi-burner industrial applications such as electric utility boilers, power boilers and large fur-
naces or incinerators. The 55UV5 scanner monitors the flame(s) of only one burner. The pilot and
main flames may be monitored individually (2 scanners) or in combination (1 scanner). When prop-
erly sighted, the scanner should discriminate between the burner being monitored and all other burn-
ers and any background flames.
Note: Scanner response is dependent on burner configuration as well as the turbulence and spectral
characteristics of the flames. Application assistance is available on request.
55UV5 SCANNER
MODEL 1010
APPROVED
133-721
MAY 6, 2013
1
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Related Manuals for Fireye 55UV5
Summary of Contents for Fireye 55UV5
- Page 1 The 55UV5 scanner monitors the flame(s) of only one burner. The pilot and main flames may be monitored individually (2 scanners) or in combination (1 scanner). When prop- erly sighted, the scanner should discriminate between the burner being monitored and all other burn- ers and any background flames.
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Page 2: Principles Of Operation
This is a prerequisite for energizing the associated Fireye control’s flame relay. The 55UV5 scanner is equipped with a fitting to accept ½" liquid-tight flexible conduit, and 20 feet (6 meters) of captive cable to connect to its associated 25SU3 or 25SU5 control. -
Page 3: Specifications
190 to 250 nanometers. No response to infrared radiation or visible light. ELECTRICAL: Power Requirement: 4 VA AC from associated Fireye control (see note below). Frequency: 60 HZ Electrical Connection: Flexible -conduit fitting and 20 ft (6m) of five conductor cable... -
Page 4: Installation
Specifications subject to change without notice. IMPORTANT NOTE: The AC power source must be sinusoidal for proper scanner operation. The application of any waveform other than a sine wave (e.g. square wave) will damage the 55UV5 scanner. PURGE AIR Source:... - Page 5 FIGURE 2. SINGLE BURNER SCANNER SIGHTING FLAME AIR REGISTER ENVELOPE BLADES SCANNER LINE OF SIGHT BURNER BURNER CENTER LINE THROAT PRIMARY BASE COMBUSTION ZONE FIGURE 3. SCANNER LOCATION VS. SECONDARY AIR ROTATION IGNITOR IGNITOR SCANNER SCANNER MAIN MAIN BURNER BURNER CCW ROTATION CW ROTATION...
- Page 6 Purge air may be supplied through the 3/4" or 1" wye connection. Normally only one of the two connections is provided with purge air and the other connection is plugged. When a Fireye sealing coupling is used as shown in Figure 6, the 1" wye connection is used for the purge air (plug 3/4"...
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Page 7: Piping Arrangements
If the tube position is changed in the field, and the scanner is later replaced, verify that the signal strength is not excessive. The scanner sight pipe should be as large as is practical. Ideally, the sight pipe should increase one inch in diameter (ID) for every foot in length. -
Page 8: Alignment And Adjustments
Adjust scanner sighting to detect main burner flame. When sighting is correct (see Figure 4), the signal should read between 4 and 32 on a Flame Signal Meter, Fireye P/N 38-54 or 38-55, with- out extreme fluctuations in the signal reading. - Page 9 FIGURE 7. A.Tube 4-320-1 B.Shutter 61-7181-1 FIGURE 8. A-I. Orifices: 0.062" - 0.5" DIA Orifice Retainer 34-181 Heat Insulating Nipple 35-127-1 (NPT) Heat Insulating Nipple 35-127-3 (BSP) Diode 101-78 Sealing Quartz Window 92-48 Quartz Scanner Lens 002611-001 Lens O-Ring (Not Shown) 2 needed 107427-006 Lens Retainer Ring (not shown) 101537-001 FIGURE 9.
- Page 10 AIR SUPPLY FIELD VIEW 60-1199-1 3/4" PLUG OR PURGE 1" SWIVEL MOUNT AIR SUPPLY (BACKSIDE) FIGURE 11. Scanner with Orifice FLAME FRONT .5" DIA ORIFICE 55UV5 TARGET WINDBOX AREA FIELD OF 4’ 1’ VIEW 5’ 19.6 SQ.IN. 10’ x = 10 ft...
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Page 11: Maintenance
NOTE: The installation of liquid-tight flexible conduit is mandatory in all installations, and is furnished by the installer. The 55UV5 scanner is equipped with 20 feet (6 meters) of captive cable to connect to its associated 25SU3 or 25SU5 control. If a longer length is required, Fireye six-conductor cable p/n 59-470 (600V / 90C, 4 conductors 18 AWG, 2 conductors 22 AWG, common shield with drain wire) should be used to extend the distance up to 1000 feet (305 meters) total. - Page 12 NOTE: The Green wire is connected to the scanner housing and may be used as an optional earth ground connection. NOTE: The 55UV5-1010 scanner has a unique cable color code per figures 12 -14. FIGURE 13. WIRING, 25SU3-5166; 25SU5-5011, -5012, -5013 AMPLIFIERS...
- Page 13 Connect scanner cable shield to amplifier earth ground terminal D32 or Z32 The shield at the 55UV5-1010 scanner end is left disconnected. 25SU3-2000, see bulletin CU-34E 25SU3-2100, see bulletin CU-34 NOTE: The 55UV5-1010 scanner has a unique cable color code per figures 12 -14.
- Page 14 NOTE 1: Scanner and control frequency must be compatible with frequency of power line. NOTE 2: For 25SU3 Model 4169T code 18 and later use 55UV5 Model 1010 (60HZ). 25SU3 Model 4169T code 17 and earlier should not be used with 55UV5-1010.
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Page 15: Troubleshooting
TROUBLESHOOTING The following steps should be performed if flame is not detected: NOTE: Wear protective filtered lenses when viewing flame. Check scanner wiring for breaks and proper connections. Look down the sight pipe. — Scanner should have an unrestricted view for all firing conditions. —... - 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.