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[EnergyPlus_Support] Re: Sizing according to ASHRAE 90.1

Unfortunately, I have another doubt. What is the best solution for the choice of the weather data for the sizing period? I know that I have to respect paragraph G3.1.2.2.1 but I don't have statistical data to develop "design days developed using 99.6% heating design temperature and 1% dry-bulb and 1% wetbulb cooling design temperatures". 
Is using the same test reference year that I use for the annual simulation acceptable for LEED reviewers? 
In that case, I would use the object "SizingPeriod:WeatherFileDays" and I would create two objects: one with the three coldest months (field "Day of Week for Start Day": WinterDesignDay) the other one with the three warmest months (field "Day of Week for Start Day": WinterDesignDay). Do you think it is a good idea?
Best Regards
Francesco



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