Outdoor air systems
- 1 Air quality standards
- 2 Smoking ban
- 3 Ventilation effectiveness
- 4 VOC reduction
- 5 Air filtration
- 6 Microbe and mold control
- 7 Construction pollution management
- 8 Healthy entrance
- 9 Cleaning protocol
- 10 Pesticide management
- 11 Fundamental material safety
- 12 Moisture management
- 13 Air flush
- 14 Air infiltration management
- 15 Increased ventilation
- 16 Humidity control
- 17 Direct source ventilation
- 18 Air quality monitoring and feedback
- 19 Operable windows
- 20 Outdoor air systems
- 21 Displacement ventilation
- 22 Pest control
- 23 Advanced air purification
- 24 Combustion minimization
- 25 Toxic material reduction
- 26 Enhanced material safety
- 27 Antimicrobial surfaces
- 28 Cleanable environment
- 208 Injury prevention
20. Outdoor air systems
Dedicated outdoor air systems separate the imperatives of heating and cooling from ventilation requirements so that optimal air quality and thermal comfort can be independently achieved.
Although there is evidence that thermal comfort and space conditions may improve through the use of dedicated outdoor air systems (DOAS), ASHRAE does not currently have a separate published and peer-reviewed standard or design guide for them. A properly designed DOAS can save energy compared to conventional systems while always supplying the appropriate amount of ventilation. This feature sets requirements for projects implementing DOAS systems.
Part 1: Source Separation
All restrooms, janitorial closets, kitchens, cafeterias and pantries prevent strong odors from migrating to workspaces through one of the following separation methods:
a. Negative pressurization.
b. Interstitial rooms.
c. Vestibules.
d. Hallways.
e. Automatic doors.
Respiratory
Applicability Matrix
| Core & Shell | Tenant Improvement | New Construction | |
|---|---|---|---|
| Part 1: Source Separation | - | O | O |
| Commercial Kitchen | Schools | Multifamily Residential | Restaurant | Retail | |
|---|---|---|---|---|---|
| Part 1: Source Separation | O | O | - | O | O |
Verification Methods Matrix
| Letters of Assurance | Annotated Documents | On-Site Checks | |
|---|---|---|---|
|
PART 1 (Design) Source Separation |
Architectural Drawing |