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  • APPENDIXRA
    RECOMMENDED PROCEDURE FOR WORST-CASE TESTING
    OF ATMOSPHERIC VENTING SYSTEMS UNDER
    R402.4 OR R405 CONDITIONS ≤ 5ACH50

    (This appendix is informative and is not part of the code.)

    SECTIONRA101
    SCOPE

    RA101.1 General.

    This appendix is intended to provide guidelines for worst-case testing of atmospheric venting systems. Worst-case testing is recommended to identify problems that weaken draft and restrict combustion air.