IEQ1: Decoupled Ventilation

(1-4 points)

PURPOSE

Provide dedicated system for outside air ventilation to optimize thermal comfort, moisture control and energy performance.

CRITERIA

Projects fulfill applicable options:

Option A: Dedicated Outside Air System (DOAS) (1 point)

Decouple outside air introduction from the building’s heating and cooling systems by installing a DOAS for at least 90% of outside air flow rate requirements. Ventilation air must be pre-conditioned before it is introduced into heating and cooling system or conditioned spaces. System must have filter that is accessible for maintenance.

Option B: Pre-Conditioning Outside Ventilation Air with Energy Recovery (3 points)

Employ pre-conditioning strategies to temper incoming ventilation air using an energy recovery ventilation (ERV) system. System must be easily accessible and have a filter that is accessible for maintenance.

VERIFICATION 

• Construction Documents indicate DOAS and ventilation pre-conditioning strategies 
• Site Inspection by ECLC Technical Advisor

RESOURCES

American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) www.ashrae.org

http://doas-radiant.psu.edu/IAQ8.pdf