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Full Description

This standard provides a test method for determining whether the depressurization of a dwelling unit by air-moving devices is sufficient to affect the ability of vented fuel-burning appliances and their venting systems to exhaust some or all of their combustion products to the outdoors.

This standard applies to dwelling units (detached, semi-detached and row housing (The standard applies to row housing that is ground accessible and equipped with self-contained ventilation and venting systems.)) equipped with both fuel-burning appliances whose products of combustion are intended to be vented to the outdoors and air exhaust devices expelling air to the outdoors or air-moving devices moving air within the dwelling unit.

This standard establishes specific conditions of test and describes the pressure-measuring apparatus and the procedures for measuring the resultant depressurization.

This standard includes a list of depressurization limits for specified fuel-burning appliances and their venting systems. These limits are used to assess whether the level of depressurization measured is likely to result in the spillage of combustion products within the dwelling unit.

The testing and evaluation of a dwelling unit against this standard may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this standard has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any applicable regulatory requirements prior to its use.

 

Document History

  1. CAN/CGSB 51.71-2005

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    Depressurization Test

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  2. CAN/CGSB 51.71-95


    The Spillage Test - Method to Determine the Potential for Pressure-Induced Spillage from Vented, Fuel-Fired, Space Heating Appliances, Water Heaters and Fireplaces

    • Historical Version