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About This Sheet:
This sheet is designed to determine the volume of airflow required to meet the ASHRAE 62.2-2013 whole building ventilation requirement.
There is a tab at the bottom of the page that links to a report sheet that can be completed and signed to document the system.
The "Exist. Adjusted whole Bldg CFM" Cells display the ventilation requirements for Existing buildings Adjusted for existing fans, windows and infiltration credit.
It displays required ventilation when the buildings is tightened, calculates the ACH50, ACHnatural, calculations te 'n' Factor, and The target CFM50 for. 35 ACHnatural. Ceiling height Assumed to be 8feet.
Note that the "n" Factor based on ASHRAE's TMY 3 weather data, and The number of stories of the building.
If Macros are active, select "Clear Entries" to Clear all the Entry Fields.
Using the Sheet:
Select the state of Province.
Select a weather station.
Enter the square footage of the house.
Enter the Number of bedrooms or bedrooms or number of occupants -1, Whichever is More.
Select the number of floors.
Enter the Blower Door CFM50 on single family units. No entry for multi family units Existing Building Adjustment
Note: Calculations assume that if there is no entry for a window or fan in the kitchen the existing building calculations re not being used.
1. Entry Sheet
2. Whole Building Ventilation Intermittent Control
3. Report
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