Cookies on CSA Group

We use Cookies to create a secure and effective website experience for our customers. For more information about Cookies and how you can disable Cookies, visit our privacy policy page. Learn More

logo close
Privacy Preference Centre

Please manage your cookie choices by switching the consent toggles on or off under the Purposes below.

You may change your preference at any time as described in our Cookie Policy

  • Cookie Settings
  • List of Cookies
close
    Skip to content
    CSA Store
    • CSA Group
    • CSA OnDemand™
    • CSA Communities
    • Contact Us
    • Catalogue
      • Browse By Subject Area

        • Electrical
        • Fuels & Transportation
        • Petroleum & Natural Gas
        • Environment & Natural Resources
        • Construction & Infrastructure
        • Mechanical & Industrial Equipment
        • Nuclear
        • Health Care and Well-being
        • Worker & Public Safety
        • Management Systems
      • Browse By Publisher

        • ASME
        • ASTM
        • CSA Group
        • ESA
        • IEC
        • ISO
        • NRC
        • ORNAC
        • TSSA
      • ICS Catalogue

        • Browse by International Classification of Standards (ICS Codes)
    • Subscription
      • Browse By Subject Area

        • Electrical
        • Fuels & Transportation
        • Petroleum & Natural Gas
        • Environment & Natural Resources
        • Construction & Infrastructure
        • Mechanical & Industrial Equipment
        • Nuclear
        • Health Care and Well-being
        • Worker & Public Safety
        • Management Systems
      • CSA Subscriptions

        • Why choose subscriptions?
        • About CSA Advantage™
        • About CSA OnDemand™
        • CSA OnDemand™ Collections
      • ICS Catalogue

        • Browse by International Classification of Standards (ICS Codes)
    • Services
    Cart Icon0
    ×
    Login / Register
    English / CAD

    Language

    en

    fr

    Currency

    CAD

    USD

    • CSA Group
    • CSA OnDemand™
    • CSA Communities
    • Contact Us
    Wishlist

    Catalogue

    • Browse By Subject Area

      • Electrical
      • Fuels & Transportation
      • Petroleum & Natural Gas
      • Environment & Natural Resources
      • Construction & Infrastructure
      • Mechanical & Industrial Equipment
      • Nuclear
      • Health Care and Well-being
      • Worker & Public Safety
      • Management Systems
    • Browse By Publisher

      • ASME
      • ASTM
      • CSA Group
      • ESA
      • IEC
      • ISO
      • NRC
      • ORNAC
      • TSSA
    • ICS Catalogue

      • Browse by International Classification of Standards (ICS Codes)

    Subscription

    • Browse By Subject Area

      • Electrical
      • Fuels & Transportation
      • Petroleum & Natural Gas
      • Environment & Natural Resources
      • Construction & Infrastructure
      • Mechanical & Industrial Equipment
      • Nuclear
      • Health Care and Well-being
      • Worker & Public Safety
      • Management Systems
    • CSA Subscriptions

      • Why choose subscriptions?
      • About CSA Advantage™
      • About CSA OnDemand™
      • CSA OnDemand™ Collections
    • ICS Catalogue

      • Browse by International Classification of Standards (ICS Codes)

    Services

    Menu toggle Icon
    Login / Register
    English / CAD

    Language

    en

    fr

    Currency

    CAD

    USD

    Wishlist Cart (
    )

    Search Section

      • Home
      • CSA Group
      • Fuels & Transportation
      • Safety & Performance
      • Gas Equipment Standards
      • ANSI Z21.47-2016/CSA 2.3-2016

      Codes & Standards - Purchase

      ANSI Z21.47-2016/CSA 2.3-2016

      Gas-fired central furnaces
      SKU: 2424023 Published by CSA Group Publication Year 2016 324 pages Withdrawn

      View Access for this document is only available for viewers in Canada

      Product Details

      • Preface/Scope
      • Editions

      Preface


      This is the seventh edition of ANSI Z21.47 • CSA 2.3, Gas-fired central furnaces. It supersedes the previous editions published in 2012, 2006, 2003, 2001, 1998, and 1993.


      Scope


      1.1

      This Standard applies to automatically operating gas-fired central furnaces (see Clause 3, Definitions), hereinafter referred to as furnaces, for installation in residential, commercial, and industrial structures including furnaces for direct vent, recreational vehicle, outdoor, and manufactured (mobile) homes. These furnaces may include a cooling unit. All units are to be constructed entirely of new, unused parts and materials.


      1.2

      In Canada, this Standard applies to gas-fired central furnaces having inputs up to and including 400,000 Btu/hr (117 228 W).


      1.3

      This Standard applies to Category I, Category II, Category III, and Category IV Central Furnaces. See Clause 3, Definitions.


      1.4

      This Standard applies to furnaces of the types defined in Clause 3, Definitions, which are designed to supply heated air through ducts to spaces remote from or adjacent to the furnace location. Location and use of such furnaces with respect to the spaces being heated necessitates automatic operation of the appliance.


      1.5

      This Standard covers the thermal efficiency, Clause 5.40, Thermal efficiency, and related markings of only those furnaces whose efficiencies are not regulated in the U.S.A. by the Energy Policy Act and Conservation Act of 1975 and the National Energy Conservation Policy of 1978* or not covered in Canada by Clause 13, Items unique to Canada, when connected to single phase electrical supply.


      * At the time of printing, Federal energy acts in the U.S.A. regulate the efficiency (heating capacity) of furnaces having input ratings less than 225,000 Btu/hr (65 941 W).


      1.6

      A furnace of a type not specifically defined in this Standard may be subjected to such examination and tests as deemed necessary by the testing agency to determine compliance with the intent of this Standard.


      1.7

      This Standard also applies to a furnace that is factory equipped with both a draft hood and an automatic vent damper device (see Clause 3, Definitions), hereinafter referred to as vent damper device.


      1.8

      Unless otherwise indicated on its rating plate, a furnace is to be for installation indoors in accordance with its markings and the manufacturer’s installation instructions. When specified additional or alternate provisions are met, a furnace may be for manufactured (mobile) home installation or for use outdoors.


      1.9

      A furnace for manufactured (mobile) home installation is to be designed so when installed in accordance with the manufacturer’s installation instructions supplied with the furnace, it provides complete separation of its combustion system from the living space of the manufactured (mobile) home.


      The complete separation of the furnace combustion system from the living space of the manufactured (mobile) home is accomplished by the furnace being designed and installed so (1) all air supplied for combustion, (2) the combustion system of the furnace, and (3) all products of combustion are completely isolated from the living space. Doors, panels, and any other access openings of the structure serving an enclosure required for such isolation are to communicate only to the outdoors. A furnace that by its inherent design provides such complete separation is referred to as a direct vent central furnace (see Clause 3, Definitions).


      1.10

      A furnace is for use with one or more of the gases specified in Clause 5.1.1. A furnace for manufactured (mobile) home installation is to be convertible for use with natural gas and propane gas.


      1.11

      Special construction provisions applicable to Category II, III, or IV furnaces are outlined under Clauses 1.12,4.1.25, 4.13, Condensate disposal, Clauses 4.14.16 through 4.14.18, 4.23.6(d), 4.23.6(h), 4.26.3 (b)(iv), and Clause 4.26.6(f).


      1.12

      A furnace for indoor installation designed to vent the flue gases horizontally through an outside wall is to be specified as Category III or IV, except Category I furnaces utilizing a listed mechanical venter applied externally to the venting system.


      1.13

      Special construction provisions applicable to a furnace for manufactured (mobile) home installation are outlined under Clauses 1.8, 1.9, 1.10, 4.1.24, 4.5.5, 4.10.18, 4.23.3(d), 4.23.9, 4.26.3(b)(vi), 4.26.13(a) and Clause 4.26.13(d), and Clause 6.


      1.14

      Special construction provisions applicable to a furnace convertible for use with natural gas and propane gas are outlined under Clauses 1.10, 4.7.5, 4.11.5(d), 4.26.3(b)(vii), and Clause 4.26.5(a).


      1.15

      If a value for measurement as given in this Standard is followed by an equivalent value in other units, the first stated value is to be regarded as the specification, except as noted in Clauses 4.22.1 and 4.26.1(b).


      1.16

      All references to psi throughout this Standard are to be considered gauge pressures, unless otherwise specified.


      1.17

      Special construction provisions applicable to a furnace designed for use with an optional listed conversion kit are outlined under Annex H, Provisions for listed gas appliances conversion kits (optional).


      1.18

      Clause 2, Reference publications, contains a list of standards specifically referenced in this Standard and sources from which they may be obtained.


      Clause 2, Reference publications, includes both U.S. and Canadian reference standards where applicable. It is the responsibility of the user of this Standard to determine which referenced standard applies based on the requirements of the authority having jurisdiction at the location of the installation. However, a furnace for use in a particular country only should comply with the applicable referenced standard for that country.


      1.19

      Clause 4.17, Electrical equipment and wiring, is unique to the Standard for Gas-Fired Central Furnaces, ANSI Z21.47. The Canadian electrical equipment and wiring provisions are contained in the Standard for Electrical Features of Fuel-Burning Equipment, CAN/CSA-C22.2, No. 3.


      1.20

      Special construction provisions applicable to furnaces designed to operate at altitudes over 2000 ft (610 m) are outlined in Annex K, Provisions for listed high altitude conversion kits (optional).


      1.21

      In this Standard, shall is used to express a requirement, i.e. a provision that the user is obliged to satisfy in order to comply with the Standard; should is used to express a recommendation or that which is advised but not required; and may is used to express an option or that which is permissible within the limits of the Standard.


      Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.


      Notes to tables and figures are considered part of the table or figure and may be written as requirements.


      Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

      items 1 - of 5 result(s)
      View 20 | View 100

      ANSI Z21.47-2012/CSA 2.3-2012

      ANSI Z21.47-2012/CSA 2.3-2012 - Gas-fired central furnaces

      Withdrawn

      ANSI Z21.47-2006/CSA 2.3-2006 (R2011)

      ANSI Z21.47-2006/CSA 2.3-2006 (R2011) - Gas-Fired Central Furnaces

      Withdrawn

      ANSI Z21.47-2003/CSA 2.3-2003

      Gas-Fired Central Furnaces

      Withdrawn

      ANSI Z21.47-2001/CSA 2.3-2001

      Gas-Fired Central Furnaces

      Withdrawn

      ANSI Z21.47-1998/CSA 2.3-M98

      Gas-Fired Central Furnaces

      Withdrawn
      copyright imgRequest Copyright Permissions

      Buy

      Language

      Radio input

      Format

      Radio input
      • FAQs
      • Contact Us
      • Email Product

      GST REG No R119441681
      QST REG No R1006017360

      Compare Formats

      Determine the subscription format that is right for you.

      Select the subscription format that is right for you. Table with 13 rows and 3 columns, identifies features available and not available for the two different subscription formats - CSA Advantage TM and CSA OnDemand TM
      Features CSA AdvantageTM CSA OnDemandTM
      Offline access CSA AdvantageTM. feature available. Offline access CSA OnDemandTM. feature available. Offline access
      Full-text search CSA AdvantageTM. feature available. Full-text search CSA OnDemandTM. feature available. Full-text search
      Create highlights and personal notes CSA AdvantageTM. feature available. Create highlights and personal notes CSA OnDemandTM. feature available. Create highlights and personal notes
      Newest editions added automatically CSA AdvantageTM. feature available. Newest editions added automatically CSA OnDemandTM. feature available. Newest editions added automatically
      Includes all supported languages and archive versions CSA AdvantageTM. feature not available. Includes all supported languages and archive versions CSA OnDemandTM. feature available. Includes all supported languages and archive versions
      My Files - create customized files by adding multiple clauses, tables or figures from the standard into your own personal File for quick reference CSA AdvantageTM. feature available. My Files - create customized files by adding multiple clauses, tables or figures from the standard into your own personal File for quick reference CSA OnDemandTM. feature not available. My Files - create customized files by adding multiple clauses, tables or figures from the standard into your own personal File for quick reference
      Toggle between your files and the full standard to maintain context CSA AdvantageTM. feature available. Toggle between your files and the full standard to maintain context CSA OnDemandTM. feature not available. Toggle between your files and the full standard to maintain context
      Instantly preview cross referenced material within the book CSA AdvantageTM. feature available. Instantly preview cross referenced material within the book CSA OnDemandTM. feature not available. Instantly preview cross referenced material within the book
      Export personal notes to Excel CSA AdvantageTM. feature available. Export personal notes to Excel CSA OnDemandTM. feature not available. Export personal notes to Excel
      Transfer notes and highlights when updates are available CSA AdvantageTM. feature available. Transfer notes and highlights when updates are available CSA OnDemandTM. feature not available. Transfer notes and highlights when updates are available
      Adobe Reader PDF and browser compatible for iOS and Android CSA AdvantageTM. feature not available. Adobe Reader PDF and browser compatible for iOS and Android CSA OnDemandTM. feature available. Adobe Reader PDF and browser compatible for iOS and Android
      Web, Android, iOS Compatible CSA AdvantageTM. feature available. Web, Android, iOS Compatible CSA OnDemandTM. feature not available. Web, Android, iOS Compatible

      Follow Us On Social Media

      Get Our Newsletter

      Get CSA Newsletter

      • About CSA Store
      • Subscription
      • Services
      • Catalogue
      • FAQ
      • Return Policy
      • FULFILLMENT DETAILS
      • EBOOK SUPPORT
      • Product Updates
      • Contact Us
      • CSA GROUP
      • CSA COMMUNITIES
      • CSA Update Service
      • About CSA Store
      • Subscription
      • Services
      • Catalogue
      • FAQ
      • Return Policy
      • FULFILLMENT DETAILS
      • EBOOK SUPPORT
      • Product Updates
      • Contact Us
      • CSA GROUP
      • CSA COMMUNITIES
      • CSA Update Service

      • General Terms and Conditions
      • Privacy Policy
      • Accessibility
      © 2023 Canadian Standards Association. All rights reserved

      Free Login/Registration Required

      View Access for this document is only available for viewers in Canada.

      A free user account is required to view this document.

      Login or Register