Datasheet Content
[{"filename":"SC-108-Flame_Scanners_UV_Non_Self-Check_Models_UV1AL-3_UV1AL-6_UV1AL-CEX_Englsih_2020-04-06.pdf","text":"UV5\n\n SC-108\n April 6, 2020\n\n FIREYE\n FLAME SCANNERS\n UV non self-checking Scanner Models:\n 3G-OTH-02855-3, 3G-OTH-02855-6, 3G-OTH-02855-CEX\n UV90L-1, UV90L-2, UV5-1, UV5-2\n UV90L\n\n\n\n 3G-OTH-02855\n\n\n\nDESCRIPTION\n The 3G-OTH-02855, UV90L, 3G-OTH-02855-CEX and UV5 scanners are used with the BurnerPRO, MBCE and\n NXF4000 systems. The 3G-OTH-02855-3/6 scanners come with 3 ft. or 6 ft. cables rated for Tray Cable -\n Exposed Run (TC-ER) and complies with the crush and impact requirements of the standard for metal\n clad cable, UL 1569. The 3G-OTH-02855-3/6 is fitted with a 1/2” NPT threaded coupling. The UV90L-1/2\n provides field wireable terminal block. The UV5-1 and UV5-2 come with a 6.5ft UL rated cable for\n installation. The 3G-OTH-02855-CEX is a 3G-OTH-02855 mounted in a ATEX compliant housing for environments\n requiring the rating of Exd IIC T6 ATEX hazardous location.\n The UV90L Series Scanners are designed for front and lateral (90°) mounting which, in some appli-\n cations allow the scanners to obtain a clearer view of the flame. The UV90L, with its exclusive snug-\n fit mounting block, eliminates the need for a threaded sight pipe. The UV5 scanner also supports front\n and lateral viewing, but it’s highly recommended for lateral viewing to maximize the UV tube’s\n sensitivity. The UV5-1 is shipped with a mounting flange and a detachable cable. The UV5-2 is shipped\n with a mounting flange and integrated cable.\n The UV tube is made of quartz and is filled with a gas that ionizes when struck by UV radiation from\n the flame. In the absence of UV radiation, the gas acts as an insulator between two electrodes which\n are mounted inside the tube. These electrodes are energized continuously by a high voltage. During\n combustion, UV radiation ionizes the gas, causing current pulses to flow between the electrodes.\n These current pulses result in a flame signal which is transmitted to the amplifier in the control, where\n it is processed to energize or hold in the flame relay.\n WARNING: When installing or replacing UV scanners, a minimum pilot turndown test on pilot ignited\n burners and a spark pickup test on all burners must be performed.\n WARNING: All installation, service and troubleshooting of Fireye products must be performed by a qualified\n technician.\nAPPLICATION\n The UV scanner is ideally suited for gaseous fuels (natural gas & propane). However, it can be used in\n detecting flames from standard fuel gases, some waste gases and light oil fuels such as No. 2 oil. Flames\n from heavier oils can be detected with UV scanners but the unburned fuel shroud and/or atomization\n shroud can block passage of the UV from the flame zone to the UV tube, causing nuisance burner/boiler\n trips. Infrared detection is recommended for fuel oil heavier than No. 2, and some installations where\n waste gases are burned together with natural gas as a main flame.\n It should be noted that certain safety codes and regulations require the use of self-checking ultraviolet\n scanners. For information on self-checking UV scanners, refer to Bulletin SC-101.\n 1\n\fSPECIFICATIONS\n Operating Voltage: (S1-S2): 300 VDC nominal\n Operating Temperature\n 3G-OTH-02855: -40°C to +94°C (-40°F to +201°F)\n 3G-OTH-02855-CEX: -40°C to +94°C (-40°F to +201°F)\n UV90L: -40°C to +90°C (-40°F to +194°F)\n UV5: -20°C to +60°C (-4°F to +140°F)\n\n Humidity: 85% RH maximum non-condensing\n\n 1\n 3G-OTH-02855-3: /2\" NPT, 36\" (915mm) shielded leads\n 1\n 3G-OTH-02855-6: /2\" NPT, 72\" (1830mm) shielded leads\n 3G-OTH-02855-CEX: 1 NPT, 1/2\" NPT conduit cable entry\n UV90L-1 Terminal block\n UV90L-2 Terminal block (specialty application - contact factory)\n UV5-1 80” (2000mm) length, detachable cable\n UV5-2 80” (2000mm) length integrated cable\n\n For scanner dimensions refer to Figures 2, 3 and 4.\n Consult factory for custom lead lengths.\n\n\n NOTICE: The information provided in this bulletin is directed to assist boiler and combustion\n service technicians who are experienced in the installation and operation of Fireye Flame Safety\n equipment. Persons not familiar with Fireye products should contact the nearest Fireye representative\n or other qualified service group. The 3G-OTH-02855, UV5, and UV90L, as well as all other Fireye scanners,\n are designed to be used exclusively with the appropriate Fireye Flame Safeguard and Burner\n Management controls. The application of these scanners to other than Fireye equipment should be\n reviewed for approval by Fireye.\n\n\nAPPLICATION REFERENCE\n 3G-OTH-02855, UV5 and UV90L-1 can be used only with the following FIREYE flame safeguard controls.\n BURNERPRO MBCE FLAMESWITCH NEXUS\n BP110UV series MBCE-110UV-x NXF4000\n BP230UV series MBCE-230UV-x NXF4000-230V\n BP110UVFR series\n BP230UVFR series\n\n The UV90L-2 is only approved for use with the M4RT1.\n\n\n\n\n2\n\f CAUTION: The 3G-OTH-02855, UV5 and UV90L ultra-violet flame scanners are non-self checking UV\n systems and should be applied only to burners that cycle often (e.g.: a minimum of once per 24\n hours) in order for the safety checking circuit to be exercised.\n\nFIGURE 1. TYPICAL SCANNER MOUNTING FOR 3G-OTH-02855\n\n\n\n\nFIGURE 2. MOUNTING DIMENSION FOR UV90L\n\n\n\n\n 3\n\f FIGURE 3. 3G-OTH-02855 SCANNER OUTLINE DIMENSIONS\n\n\n\n\n FIGURE 4. MOUNTING DIMENSION FOR UV5\n\n\n\n\n Use two #8-32 PAN or M4 PAN screws to secure flange to mounting surface\n\n\n\n\n4\n\f FIGURE 5. DIMENSION FOR 3G-OTH-02855-CEX\n\n\n\n\nACCESSORIES\n PART NUMBER DESCRIPTION\n 1\n 60-302 /2\" Swivel Union\n 35-69 Heat Insulator 1/2\" NPT threads each end, (male x female).\n 1\n 60-1257 /2\" NPT Union with quartz window\n 1\n 60-1290 /2\" NPT Union with quartz lens to increase sensitivity\n\n\n\n\n 5\n\fINSTALLATION OF 3G-OTH-02855, UV5, & UV90L SCANNERS\n WARNING: THE LEADS FROM THE SCANNER TO THE CONTROL MUST BE SHIELDED TO\n PREVENT ELECTRICAL NOISE FROM GENERATING A FALSE FLAME SIGNAL TO THE\n CONTROL.\n Where possible, obtain the Burner Manufacturer’s Instructions for mounting the scanner. This information is\n available for most standard burners. The scanner mounting should comply with the following general\n Instructions:\n The following UL standards have been revised and now allow the use of TC-ER rated cable on Com-\n mercial boilers and burners:\n UL 295: Commercial - Industrial Gas Burners – Sections 10.1.6, 10.1.9, and 11.2.2.\n UL 296: Oil Burners – Sections 31.1.8, 31.1.11, and 32.2.2.\n UL 726: Oil fired Boiler Assemblies – Sections 15.1.6, 15.1.9, and 16.1.6.\n UL 795: Commercial - Industrial Gas Heating Equipment – Section 12.5.\n 1. The quartz UV tube is brittle. Care must be exercised to avoid dropping or otherwise striking the\n scanner with force. Keep the scanner protected until mounted.\n 2. Position the UV scanner within 36 inches of the flame to be monitored.\n 3. Select a scanner location that will remain within the ambient temperature limits of the UV\n Scanner. If cooling is required, use an insulating coupling (Fireye P/N 35-69).\n 4. The UV Scanners are designed to seal off against pressures up to 1 PSI. To seal against higher\n pressures, install a union coupling with quartz window (P/N 60-1257). Add cooling air to reduce\n the scanner sight pipe temperature. (Not applicable to UV90L and UV5).\n 5. Install the 3G-OTH-02855 scanner on a standard 1/2 inch NPS pipe whose position is rigidly fixed. If\n the scanner mounting pipe sights through the refractory, do not extend it more than halfway\n through. Swivel flanges are available if desired (P/N 60-302). The sight pipe must permit an\n unobstructed view of the pilot and/or main flame, and both pilot and main flames must com-\n pletely cover the scanner field of view. Oil and gas flames radiate more ultraviolet energy from\n the base of the flame than from further out in the flame. This fact should be considered when\n installing the scanner sight pipe.\n\n\n\n\n 6. Since the radiated energy from an electric spark ignitor is very rich in the UV region, the field of\n view should be aimed so that it does not see an electric spark ignitor nor any reflector that is close\n to the spark.\n\n CAUTION: The unprotected leads must be run in electrical conduit in order to eliminate pickup\n of electrical noise which could present an unsafe condition.\n\n To prevent spark pickup by the UV detector, close and/or disconnect all pilot and main fuel valves.\n Operate the control through a burner startup cycle to determine that ignition spark cannot be detected.\n Burner will not ignite if spark is detected.\n 7. Avoid running the scanner cables or conduit in close proximity to hot surfaces at the burner.\n 8. Avoid running the scanner conduit in close proximity to high energy ignition wires.\n 9. Smoke or unburned combustion gases absorb ultraviolet radiation. On installations having negative\n pressure combustion chamber, a small hole drilled in the scanner sight pipe will assist in keeping the\n pipe clean and free of smoke. For…
