BHMA A156-4:2013 pdf download.AMERICAN NATIONAL STANDARD FOR DOOR CONTROLS - CLOSERS
1. SCOPE
1 .1 BHMA A156-4 contains requirements for door closers surlitce mounted, concealed in the door, overhead concealed and concealed in the floor. Also included are pivots for floor closers. Criteria for conformance include cycle, operational, closing force and finish tests. Optional tests which shall be specified separately are also included.
1.2 Tests in this Standard are performed under neutral air pressure laboratory conditions and between 60 and 85 degrees F. In actual usage results vary because of installation, maintenance, and environmental conditions. Actual closer performance is affected by fluctuating ambient conditions such as wind and pressure differentials, consult factory for recommendations.
1 .3 Use on Fire I)oors A door closer used on labeled tire door assemblies shall be listed or labeled by a nationally recognized independent testing laboratory, and be subject to a periodic in-plant follow-up service. Consult the authority having jurisdiction for the appropriate fire test requirements.
2. GENERAL
2.1 Reference to other Standards. ANSI Standards referenced in this Standard are available from the American National Standards Institute, www.ansi.org, and www.buildershardware.com.
2.2 Type Numbers This Standard has been prepared to standardize door closers and controls by type requirements and performance levels. Only those type numbers shown in this Standard shall he used. For explanation of identifying numbers, see 11.14.
2.3 Manufacturer’s Catalogs Consult manufacturer’s catalogs for construction details and special conditions relating to accessories.
2.4 Tolerances All values which do not carry specific tolerances or are not marked maximum or minimum shall have the following tolerances: Number of cycles shall be minimum. Linear dimensions shall be ± 1/16 in. (1.6 mm). Pounds or pound force shall be ± 2%. The scribed lines for degree of opening shall be within ± 2 degrees. A tolerance of± 2 degrees F shall be applied to temperature call outs.
2.5 SI Units All dimensions are expressed first in US units with SI unit (metric) equivalents given in parentheses. SI units are approximate.
2.6 All Closers Door closers shall be categorized as listed in the following groupings by their performance requirements.
2.8 Fluid To ensure better performance over a range of outdoor temperatures fluid used in door closers intended for exterior or vestibule door application shall have a pour point of minus 38 degrees F (-39 degrees C) or lower when tested in accordance with ASTM D-97.
2.9 Types to Test Non-hold open type closers shall be used for all testing.
2.10 Samples A single door closer shall be used for all tests except finish tests, and shall be run consecutively.BHMA A156-4 pdf download.