UL 2043-2013 pdf download
UL 2043-2013 pdf download.Fire Test for Heat and Visible Smoke Release for Discrete Products and Their Accessories Installedin Air-Handling Spaces.
4.4 Photometer system
4.4.1 Linearity of the photometer system is to be verified by interrupting the light beam with multiple calibrated neutral density filters to cover the range of the recording instrument. Transmittance values measured by the photometer, using neutral density filters, are to be within ±3 percent of the calibrated value for each filter.
5 Test Specimens
5.1 Finished test specimens of each product are to be tested. The test specimens are to be
representative of the construction being investigated with regard to components and design.
5.2 The test specimens are to be conditioned at 73 ±5°F (23 ±3°C) and at a relative humidity of 50 ±5
percent for a minimum of 24 hours peor to the test.
6 Test Procedure
6.1 initial preparation
6.1.1 The ambient temperature in the test area is to be above 60°F (16°C) and the relative humidity is to be less than 75 percent prior to the start of each test.
6.1.2 The pretest calibration procedures specified in Pretest Calibration, Section 4. are to be performed.
6.1.3 A nominal exhaust flow rate of at least 1500 cubic feet per minute (0.71 m3/s) through the duct is to be established, sufficient to provide adequate air flow to capture the products of combustion. The exhaust flow rate is to be increased as necessary dunng the test to maintain a duct oxygen concentration above 14 percent.
6.2 Procedure
6.2.1 The mounting method of the test specimen is to be as described in Appendix A — Guide to Mounting Methods.
6.2.2 The test frame enclosure and burner are to be positioned on a non-combustible surface as described in Appendix A.
6.2.3 The test is to be conducted in an environment that is relatively free of spurious air currents which will affect the isolation of the burner flame beneath the test specimen.
6.2.4 The gas supplied to the burner is to be Special Duty Propane as defined in the Standard Specification for Liquefied Petroleum (LP) Gases. ASTM 01835; or HD-5 Propane as defined in the Standard for Liquefied Petroleum Gas Specifications and Test Methods, GPA Standard 2140; or CP-grade propane (99 percent pure). This gas has a known net heating value of 2500 Btu (thermochemical) per cubic foot [93.0 MJ/m3 or 22.2 kilocalories (thermochemical per cubic meter) shall be used. To start the test, the propane gas burner is to be ignited and the propane gas flow is to be increased to 88 ±2 cubic feet per hour (624 ±15 cm3/s) to provide a flame which produces a theoretical heat release rate of 60 kilowatts (204.740 ±5825 BtuTh). The data acquisition equipment is to be started simultaneously.
A2 Loudspeakers, Loudspeaker Assemblies and Their Accessories
A2.1 Test frame enclosure and burner
A21.1 A steel angle frame is to be used to support the test specimeri The frame is to measure 36 inches (914 mm) high by 28 inches (106 mm) wide by 48 inches (1.2 m) long and be comprised of nominal 1-1/2 by 1-1/2 inch (38 by 38 mm) angles as shown in Figure A1.1. Other construction shall not be used except where the alternative construction has been shown to provide equivalent results.
A2.1.2 Nominal 1/2 Inch (12.7 mm) thick by 42 inch (1,07 m) wide ceramic boards are to be secured to the steel angle frame to form an enclosure as shown in Figure Al .1. The boards are to be secured to the frame to extend 18 inches (457 mm) above the top of the steel angle frame creating a 12 inch (305 mm) gap at the base of the frame. The ceramic board enclosure is not prnhibited from containing glazed observation windows for visual and photographic documentation.
A2.1 .3 The test frame enclosure and burner Is to be positioned on a non-combustible surface. The gas burner is to be positioned in the center of the test frame on top of a nominal 8 inch (203 mm) high inorganic support.
