J
Building Performance and Testing
VERIFICATION
Documentation: The Rater will collect a report and documentation of test results that are within 10 % of ACCA Manual J calculations from a qualified professional, such as a home performance contractor. These tests may be completed by the Rater, if he or she is appropriately qualified.
J3.
J4.
INTENT
To increase building comfort and conserve energy used by forced air systems, by verifying performance through testing and adjusting the systems as needed.
MECHANICAL VENTILATION TESTING AND LOW LEAKAGE
CRITERIA FOR QUALIFICATION
One point of credit is available for having a certified HERS Rater test the mechanical ventilation system( each supply and exhaust fan used for ventilation) and then match the results to ASHRAE 62.2-2010.
Additionally, the system must be pressurized to verify that the duct system does not leak more than 6 %.
VERIFICATION Documentation: The Rater will collect the following:
INTENT
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The results of the total ventilation flow rates The ASHRAE 62.2 minimum requirements The duct leakage test results from a HERS Rater or another qualified professional
To improve indoor air quality by using mechanical ventilation and verifying performance through testing and adjusting the systems as needed.
COMBUSTION APPLIANCE SAFETY TESTING
CRITERIA FOR QUALIFICATION
DRAFT
One point is available for performing a combustion safety test( if needed) to ensure carbon monoxide flue gases are not backdrafting into the home from an open combustion fireplace, water heater, or furnace.
To receive credit, all action items for BPI Technical Standards must be completed, and the project must pass draft and spillage tests. Combustion safety must be completed for appliances in the home( s), including cook tops and ovens. Carbon monoxide levels should also be tested at burners.
Based on the results of the test, proceed with appropriate actions according to the carbon monoxide limits identified in the Combustion Safety Action Level table. For all combustion appliances, measure the carbon monoxide at steady-state operating conditions.
DRAFT GreenPoint Rated New Home Rating Manual 66 Version 6.0, September 2013
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