American Aldes ASHRAE Standard 622 User Manual

							ASHRAE Standard 62.2 2010 is a national standard that provides methods for achieving minimally acceptable indoor air quality (IAQ) 
for typical residences. This standard is applicable to single-family houses and multi-family structures of no more than three stories.
ASHRAE 62.2 2010 provides two ventilation methods, both of which need to be used to help achieve acceptable indoor air quality:
1.Whole-House Ventilation
2.Local Exhaust
WHOLE-HOUSE VENTILATION
ASHRAE 62.2 2010 has provisions for three basic ventilation strategies that can be used for whole-house ventilation:
1.Exhaust ventilation
2.Supply ventilation
3.Balanced ventilation
•Both mechanical exhaust and supply ventilation
•Mechanical exhaust and supply ventilation with heat or energy recovery
•Mechanical exhaust and passive supply ventilation
When selecting the whole-house ventilation strategy that is best for your application, you should consider local code requirements, 
geographic location, special needs of occupants, and specific indoor and outdoor air-quality issues.
Each of these three whole-house ventilation strategies can be designed for continuous or intermittent operation. American 
ALDES Ventilation Corporation recommends that for proper indoor air quality the whole-house ventilation system be designed 
for continuous operation.
ASHRAE 62.2 2010 provides the following two methods for determining the minimum airflow required for a continuously operating 
Whole House Ventilation system:
LOCAL MECHANICAL EXHAUST
A local mechanical exhaust system shall be installed in each kitchen and in each bathroom. The individual local mechanical exhaust 
can be designed for continuous or intermittent operation. ASHRAE 62.2 2010 provides the following methods for determining 
the minimum airflow required for a continuously or intermittently operating local mechanical exhaust system:
When selecting the local mechanical exhaust strategy that is best for your application, you should consider local code requirements, 
geographic location, special needs of occupants, and specific indoor and outdoor air-quality issues.
ASHRAE Standard 62.2 2010
APPLICATION  GUIDE 
						

							ASHRAE Standard 62.2 2010
2
American ALDES Ventilation Corporation offers a wide range of ventilation products to address your specific applications. The 
following examples identify various strategies to meet the requirements of ASHRAE 62.2 2010 for both whole-house ventilation 
and local mechanical exhaust.
E X AM PLE #1: 
1000ft2 apartment with one bedroom, one bathroom, and a 180ft2 kitchen is required to have a minimum of:
• 25 CFM of continuous whole-house ventilation
• 20 CFM of continuous local exhaust or 50 CFM of intermittent exhaust in the bathroom
• 15 CFM of continuous local exhaust or 100 CFM of intermittent exhaust in the kitchen
The ventilation requirements of this example can be met with any one of the following strategies:
1. One continuously operating exhaust fan with a 20 CFM exhaust grille in the bathroom and a 15 CFM exhaust grille in the kitchen.
2. One continuously operating exhaust fan with a 20 CFM exhaust grille in the bathroom with boost feature for 40-175 CFM and 
a 15 CFM exhaust grille in the kitchen with boost feature for 40-175 CFM.
3.  One continuously operating Heat or Energy Recovery Ventilator with a 20 CFM exhaust grille in the bathroom (with or without 
boost) and a 15 CFM exhaust grille in the kitchen (with or without boost).
4.  One continuously operating Heat or Energy Recovery Ventilator with a 25 CFM exhaust grille in the bathroom (with or without 
boost). Additionally, an intermittent exhaust fan or vented range hood (minimum of 100 CFM) would be required in the kitchen.
5. One continuously operating exhaust fan with exhaust grille(s) for a total of 25 CFM. An intermittent local exhaust fan (minimum 
50 CFM) in the bathroom and an intermittent local exhaust fan / range hood (minimum 100 CFM) in the kitchen.
6. One continuously operating supply fan with inlet grille(s) for a total of 25 CFM. An intermittent local exhaust fan (minimum 
50 cfm) in the bathroom and an intermittent local exhaust fan / range hood (minimum 100 CFM) in the kitchen.
EXAMPLE #2: 
3000ft2 house with three bedrooms, two bathrooms, and a 300ft2 kitchen is required to have a minimum of:
• 60 CFM of continuous whole-house ventilation
• 20 CFM of continuous local exhaust or 50 CFM of intermittent exhaust in each bathroom
• 25 CFM of continuous local exhaust in the kitchen or 100 CFM of intermittent exhaust
The ventilation requirements of this example can be met with any one of the following strategies:
1. One continuously operating exhaust fan with a 20 CFM exhaust grille in each bathroom and a 25 CFM exhaust grille in the 
kitchen.
2. One continuously operating exhaust fan with a 20 CFM exhaust grille in each bathroom with boost feature for 40-175 CFM 
and a 25 CFM exhaust grille in the kitchen with boost feature for 40-175 CFM.
3.  One continuously operating Heat or Energy Recovery Ventilator with a 20 CFM exhaust grille in each bathroom (with or without 
boost) and a 25 CFM exhaust grille in the kitchen (with or without boost).
4.  One continuously operating Heat or Energy Recovery Ventilator with a 30 CFM exhaust grille in each bathroom (with or without 
boost). Additionally, an intermittent exhaust fan or vented range hood (minimum of 100 CFM) would be required in the kitchen.
5. One continuously operating exhaust fan with exhaust grille(s) for a total of 60 CFM. An intermittent local exhaust fan (minimum 
50 CFM) in each bathroom and an intermittent local exhaust fan / range hood (minimum 100 CFM) in the kitchen.
6. One continuously operating supply fan with inlet grille(s) for a total of 60 CFM. An intermittent local exhaust fan (minimum 
50 CFM) in the bathroom and an intermittent local exhaust fan / range hood (minimum 100 CFM) in the kitchen.
American ALDES Ventilation Corporation  •  4521 19th Street Court East, Suite 104  •  Bradenton, FL 34203 – USA
941.351.3441  •  800.255.7749  •  941.351.3442 (fax)  •  [email protected]  •  www.aldes.us
© 2013 American ALDES Ventilation Corporation.  Reproduction or distribution, in whole or in part, of this document, in any form or by any means, without the express written consent of American ALDES Ventilation Corporation, is strictly prohibited. The information contained within this document is subject to change without prior written notice.
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