6.6201.3 Primary Ventilation Air Flow Between Rooms

Topic:

Whole Building Ventilation

Subtopic:

Air Flow Requirements

Desired Outcome:

Air circulates freely between rooms

Multifamily Homes

	Title	Specification(s)	Objective(s)
	6.6201.3a Balancing pressure	An appropriate means of pressure balancing will be installed (e.g., transfer grilles, jumper ducts, individual room returns) No room will exceed +/- 3 pascals with reference to the outside with all interior doors closed and ventilation systems running Return airflow paths for residential space shall be designed in accordance with ANSI ANSI American National Standards Institute, www.ansi.org / ACCA ACCA Air Conditioning Contractors of America, www.acca.org 1 Manual D or equivalent Ducts for common areas shall be designed in accordance with ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org procedures or ACCA ACCA Air Conditioning Contractors of America, www.acca.org Manual Q	Ensure free flow of air between rooms Preserve integrity of the building envelope Envelope The separation between the interior and exterior environments of a building that includes a combination of air and thermal barrier

Title

Specification(s)

Objective(s)

6.6201.3a
Balancing pressure

An appropriate means of pressure balancing will be installed (e.g., transfer grilles, jumper ducts, individual room returns)

No room will exceed +/- 3 pascals with reference to the outside with all interior doors closed and ventilation systems running

Return airflow paths for residential space shall be designed in accordance with ANSI ANSI American National Standards Institute, www.ansi.org / ACCA ACCA Air Conditioning Contractors of America, www.acca.org 1 Manual D or equivalent

Ducts for common areas shall be designed in accordance with ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org procedures or ACCA ACCA Air Conditioning Contractors of America, www.acca.org Manual Q

Ensure free flow of air between rooms

Preserve integrity of the building envelope Envelope The separation between the interior and exterior environments of a building that includes a combination of air and thermal barrier