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Standards A-C

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  1. ANSI/ASHRAE 55-2013 Thermal Environmental Conditions for Human Occupancy cover image

    ANSI/ASHRAE 55-2013 Thermal Environmental Conditions for Human Occupancy (PDF Download)

    Referenced in the 2018 IECC. Standard 55 specifies conditions for acceptable thermal environments and is intended for use in design, operation, and commissioning of buildings and other occupied spaces. The 2013 edition of ANSI/ASHRAE Standard 55 incorporates 18 published addenda to the 2010 edition, and provides two compliance methods: a graphic method for simple situations and an analytical method for more general cases. Analytical calculations can be easily performed using the ASHRAE Thermal Comfort Tool software available from the ASHRAE Bookstore.

    Since 2010, Standard 55 has been rewritten with a renewed focus on application of the standard by practitioners and use of clear, enforceable language. Requirements are now clearly stated and calculation procedures appear sequentially. For example, during design, a "representative occupant" must be defined, and the air speed and temperature they experience must be an average across the human body at three typical measurement heights. All informative background information has been moved to informative appendices.

    Other noteworthy additions to the standard include an allowance for the cooling effect of air movement as a way to extend the upper limit of the comfort zone in naturally conditioned spaces, the addition of a predictive model for occupant clothing behavior based on extensive field research, and major revisions to Section 7 procedures for measuring comfort in existing spaces.

    Documentation requirements to show that a design complies with Standard 55 are contained in Section 6, and a sample compliance form is provided in Appendix J. Both of these sections are clarified and streamlined for use by owners and third-party rating systems.

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  2. ASHRAE 127-2007 Method of Testing for Rating Computer cover image

    ASHRAE 127-2007 Method of Testing for Rating Computer (PDF Download)

    Referenced in the 2015 IECC and 2018 IECC. The purpose of the standard is to establish a uniform set of requirements for rating computer and data processing room (CDPR) unitary air conditioners. This 2007 revision of the standard makes some significant changes to the 2001 edition: (1) some definitions have been rewritten for clarification and other definitions have been added, (2) the rating requirements have been changed—some to align the test conditions with the recommendations published in ASHRAE’s Thermal Guidelines for Data Processing Environments. (3) standards for the testing and rating of the humidification and dehumidification systems have been added or clarified, (4) a minimum MERV rating for the air filters has been established, (5) a standard method for the test and rating of the noise emitted by the units has been established, and (6) the tolerance of the unit rating verses the test results has been tightened.

    Units: Dual

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  3. ANSI/ASHRAE 140—2014 Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs cover image

    ANSI/ASHRAE 140—2014 Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs (PDF Download)

    Referenced in the 2018 IECC. Standard 140 specifies a standard method of test for evaluating the technical capabilities and applicability of software used in calculating the thermal performance of buildings and their HVAC systems. These test procedures can be used to identify and diagnose predictive differences from whole-building energy simulation software that may be caused by algorithmic differences, modeling limitations, input differences, coding errors, or documentation errors.

    The current set of tests focuses on building thermal envelope and fabric loads and HVAC equipment performance and includes 1.comparative tests, in which a program's results may be compared to a different version of itself or to the results of other programs, and 2.analytical verification tests, in which a program's results may be compared to analytical, quasi-analytical, or verified numerical model solutions.

    This procedure tests software over a broad range of parametric interactions and for a number of different output types, thus minimizing the concealment of algorithmic differences by compensating errors. Different building energy simulation programs, representing different degrees of modeling complexity, can be tested. However, some of the tests may be incompatible with some building energy simulation programs.

    The revised 2014 edition of Standard 140 includes all the test cases of Standard 140-2011 and adds a set of analytical verification test cases for evaluating models of ground-coupled heat transfer related to slab-on-grade floor construction.

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  4. ANSI/ASHRAE 146—2011 Testing and Rating Pool Heaters cover image

    ANSI/ASHRAE 146—2011 Testing and Rating Pool Heaters (PDF Download)

    Referenced in the 2015 IECC and 2018 IECC. Originally published in 1998, Standard 146 prescribes uniform methods of testing and rating pool heaters and comes under the classification of an ASHRAE Standard Method of Measurement or Test. It applies to all pool heaters operated by gas, oil, or electricity, including heat pumps using ambient air as a heat source.

    Changes to this 2011 revision include updated references and citations.

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    As low as: $50.00
  5. ASHRAE 193-2010 (ra 2014) Method of Test for Determining the Airtightness of HVAC Equipment cover image

    ASHRAE 193-2010 (ra 2014) Method of Test for Determining the Airtightness of HVAC Equipment (PDF Download)

    Referenced in 2018 IECC. Though other ASHRAE standards aim to reduce the overall air leakage found in HVAC systems, they do not provide a way to determine the effectiveness of specific components in an HVAC system in preventing air leakage. ASHRAE Standard 193 was created specifically to test the airtightness of HVAC equipment. It provides results that cognizant authorities can use to regulate air leakage of HVAC equipment and that contractors and installers can use to specify and install equipment with known leakage characteristics.

    The 2014 reaffirmation of this standard provides minor editorial updates.

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  6. ANSI/ASHRAE/IES Standard 90.1- 2016 Energy Standard for Buildings Except Low-Rise Residential Buildings (I-P Edition) (Cover Image)

    ANSI/ASHRAE/IES Standard 90.1- 2016 Energy Standard for Buildings Except Low-Rise Residential Buildings (I-P Edition)

    Standard 90.1 has been a benchmark for commercial building energy codes in the United States and a key basis for codes and standards around the world for more than 35 years. This standard provides the minimum requirements for energy-efficient design of most buildings, except low-rise residential buildings. It offers, in detail, the minimum energy efficiency requirements for design and construction of new buildings and their systems, new portions of buildings and their systems, and new systems and equipment in existing buildings, as well as criteria for determining compliance with these requirements. It is an indispensable reference for engineers and other professionals involved in design of buildings and building systems.

    This 2016 edition comprises numerous energy-saving measures and incorporates changes from more than 125 addenda. It also includes the following:

    Format changes to improve usability and readability:

    • One-column format for easier reading
    • Exceptions separated, indented, and set apart with a smaller font size
    • Italicized defined terms
    • Changes to table formats to provide contrast between rows

    Structural changes:

    • A new Reference Standard Reproduction Annex 1 is provided at the end of the document. Section 5.1.4 now cites ASHRAE Standard 169 as the source for climatic data, and Annex 1 contains extracts of tables and figures from that standard for the reader’s convenience.
    • Two new climate zones (0A/B) have been added to all prescriptive requirements tables.
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    As low as: $126.00

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