![]() Ammonia markers have been developed to help contractors comply with ANSI / ASME A13.1-2015 standards for piping identification and IIAR's Recommended Guidelines, Bulletin #114 Identification of Ammonia Refrigeration Piping and System Components March 2014 Revision. Mouse trap atari download. Bulletin #114 2014 states that all piping mains, headers and branches should be identified as to the physical state of the refrigerant, i.e. Vapor, liquid, etc., the relative pressure level of the refrigerant and the direction of flow. All components of the refrigeration system, e.g. Receivers, heat exchangers, accumulators, etc., should also be uniformly identified. ![]() Pipe markers in accordance with Bulletin 114, are designed to identify the refrigerant contained within that piping segment (i.e., ammonia) including the physical state of the refrigerant, relative pressure level of the refrigerant and direction of flow. The changes specified in the 2014 Revision of the guidelines are as follows: • Ammonia Piping Abbreviations: The 2014 revision contains 28 abbreviations versus 17 contained in the 1991 Guidelines. See full list below. • Color changes: The background color for Ammonia pipe markers shall be Safety Orange, following the color guidelines by ANSI Z535.1 Safety Color Code. • Color Changes: The color for the LIQUID physical state has also changed, it used to be Orange and is now Yellow. • Component/ Equipment Marker Abbreviations: in the 2014 revision IIAR has supplied a list of the most common component abbreviations. Evaporative condensers are used in refrigeration systems as an efficient means of heat rejection. Their installation and specifically the installation of the piping to and from the evaporative condenser has a direct effect on their operation and the overall energy efficiency of the refrigeration system. In this manual. Guide Specification: Refrigeration Systems A. Product data: To include product description, manufacturer’s installation instructions, types of insulation and recommended thicknesses for each application, and location of materials. See full list below. • Piping Color Scheme: the scope of this new section is to provide a suggested, non-mandatory color scheme beyond a simple 'one color' or 'two color' scheme for ammonia refrigeration piping systems in machinery rooms. The color schemes may also be applied to portions of the refrigeration system beyond machinery rooms. Existing schemes for identification are considered acceptable. In those areas where state codes and government regulations are not conflicted, ammonia refrigerated facilities have the option to implement a company documented piping color scheme. AMMONIA PIPE MARKER INFORMATION Ammonia pipe markers will contain or be divided in 5 section or components: • Abbreviation Section: Printed in black • Physical State Section: Either LIQUID or VAPOR Printed in yellow for Liquid and sky blue for Vapor • Marker Body: Body color to be Safety Orange and contain the refrigerant 'AMMONIA' printed in black • Pressure Level Section: Either LOW or HIGH. Pressure in excess of 70 psig will be considered to be high pressure and printed in black letters on a red band. Pressure equal to or less than 70 psig will be considered to be low pressure and printed in black on a green band. • Directional Arrow: Detachable arrow printed in black. The following chart shows the recommended pipe marker letter height and marker size based on the outside pipe diameter of the pipe to be identified and the distance between the viewer and the pipe. Considering these factors, the size of the pipe marker and lettering should be selected to provide quick and positive identification. Pipe location, from a viewer's standpoint, will be different on every installation. Therefore, on-site decisions will be necessary to provide the optimum pipe marking system. Directional arrows will be printed on the marker body. In the case of the wrap around pipe markers, arrows & legends are printed repeatedly in opposite directions allowing the marker to be applied in any direction achieving proper reading while indicating pipe content flow. The 'self-adhesive' type of marker will be printed with one directional detachable arrows. In either case, the directional arrow or arrowhead will be BLACK in color and proportionate in size to the marker. Pex Piping Installation GuideDirectional arrow tape may also be applied around the full circumference of the pipe. Component markers will bear the name of the equipment they identify, e.g., RECEIVER, ACCUMULATOR, RECIRCULATOR, etc. In addition, component markers will be provided with a pressure level designation. Component markers will have BLACK letters on a SAFETY ORANGE field. Pressure Level will be indicated by the word HIGH in RED letters or the word LOW in GREEN letters printed or applied flush with the right edge of the marker. Brimar's component markers measure 24' x 3-1/2' and contain 2-1/2' high text.
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