UL-1784:2015 pdf free download – STANDARD FOR SAFETY Air Leakage Tests of Door Assemblies and Other Opening Protectives.
5.3.4 The air supply opening into the chamber is to be arranged so that air does not impinge directly on the test sample with any non-uniform velocity.
5.3.4 revised February 17, 2015
5.4 Test setup
5.4.1 The test sample is to be installed in or against the test chamber. The same test sample is to be used for the Cycling Test, Section 6, and the Air Leakage Tests, Section 7.
5.4.2 Sealing material or construction that is not intended as a part of the assembly as installed in a building is to be removed. The test sample is to be fitted into or against the chamber opening. The outer perimeter of the test sample is to be sealed to only one face of the chamber wall. Non-hardening mastic-compounds or pressure-sensitive tape can be used effectively to seal the test sample at the chamber opening, to seal the access door to the chamber, and to achieve air tightness in the construction of the chamber. These materials can also be used to seal a separate mounting panel to the chamber. Rubber gaskets with clamping devices may also be used for this purpose, if the gasket is highly flexible and has a narrow contact edge.
5.4.2 revised February 17, 2015
5.4.3 Without disturbing the seal between the test sample and test chamber, the clearances between each side of the door or opening protective and frame, and between the meeting edges of pairs of doors; and between top and bottom are to be adjusted to the lesser of the maximum clearances specified in the installation instructions provided with the test sample, or the maximum clearances permitted by subtracting the difference between the maximum width and height of the frame, including maximum positive tolerances, and the minimum width of the door(s) or opening protective, including the maximum negative tolerances.
5.4.3 revised February 17, 2015
5.4.4 The closing forces necessary to operate a test sample incorporating a positive means of latching shall be measured and recorded. For opening protectives other than swinging doors, the closing force measurement method shall also be recorded.
5.4.4 revised February 17, 2015
5.4.5 In order to obtain information on the extent of air leakage at the ungasketed bottom gap of a test sample, an artificial seal may be applied to the bottom 6 inches (152.4 mm) of the test sample. The artificial seal may be any material, such as an impermeable sheet or tape. The artificial seal is to be used at the test sponsor’s request to isolate the perimeter of the opening protective or door assembly to allow for measuring leakage through the assembly without any influence from the clearance between the bottom of the assembly and the top of the floor surface.
6 Cycling Test
6.1 The cycling test requirements are only applicable for test samples that include movable parts. This section may be omitted for test samples that are non-operable.
6.1 added February 17, 2015
6.2 Prior to conducting the Air Leakage Tests, Section 7, the operable panel of the test sample shall function as intended after being operated for five full-stroke close and reopen operations. The closing force necessary to close and latch the door or opening protective incorporating a positive means of latching before and after the cycling test shall be measured and recorded. The test sample is to be cycled while mounted as intended.