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    ANSI Z21.44 : 1994

    GAS-FIRED GRAVITY AND FAN-TYPE DIRECT VENT WALL FURNACES

    American National Standards Institute

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    ANSI Z21.48 : 92 ADDENDA B 94

    GAS-FIRED GRAVITY AND FAN TYPE FLOOR FURNACES,

    American National Standards Institute

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    IEC 60335-2-51 : 4.0

    Household and similar electrical appliances – Safety – Part 2-51: Particular requirements for stationary circulation pumps for heating and service water installations

    International Electrotechnical Committee

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    ISO 13675 : 2013

    HEATING SYSTEMS IN BUILDINGS - METHOD AND DESIGN FOR CALCULATION OF THE SYSTEM ENERGY PERFORMANCE - COMBUSTION SYSTEMS (BOILERS)

    International Organization for Standardization

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    ISO 12241 : 2008(R2012)

    THERMAL INSULATION FOR BUILDING EQUIPMENT AND INDUSTRIAL INSTALLATIONS - CALCULATION RULES

    International Organization for Standardization

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    ASTM E 2618 : 2013 : R2019

    Standard Test Method for Measurement of Particulate Emissions and Heating Efficiency of Solid Fuel-Fired Hydronic Heating Appliances

    American Society for Testing and Materials

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    ASTM F 2929 : 2017 : REDLINE

    Standard Specification for Crosslinked Polyethylene (PEX) Tubing of 0.070 in. Wall and Fittings for Radiant Heating Systems up to 75 psig

    American Society for Testing and Materials

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    I.S. EN 303-6:2019

    Heating boilers - Part 6: Heating boilers with forced draught burners - Specific requirements for the domestic hot water operation and energy performance of water heaters and combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kW

    National Standards Authority of Ireland

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    I.S. EN 13941-2:2019

    District heating pipes - Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks - Part 2: Installation

    National Standards Authority of Ireland

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    I.S. EN 13941-1:2019

    District heating pipes - Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks - Part 1: Design

    National Standards Authority of Ireland

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