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Broan Automatic Make-Up Air Damper Product Guide – 04-17-13 
 
 
About the Application Guide 
 
Congratulations on your purchase of the Broan Automatic Make-Up Air Damper!  This product, 
called the “Damper” throughout this guide, is designed to keep your home well ventilated and 
comfortable for years to come. The Damper works automatically once it’s properly installed with 
a compatible Broan®, NuTone®, or BEST® exhaust device, so you won’t have to give your 
home’s exhaust systems a moment’s thought.  
 
Please read this Guide thoroughly, noting the specific applications for which the Broan 
Automatic Make-Up Air Damper is intended, as well as the different installation approaches.  
 
Installers – note that a separate set of Installation Instructions for the Damper is available from 
Broan. The Application Guide does not contain specific installation instructions.  
 
 
Important Information about the Application Guide 
 
Please take note that this guide uses the following symbols to emphasize particular information: 
 
 
 
 
 
About the Broan Automatic Make-Up Air Damper Unit   
 
 
 
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSON(S) 
OBSERVE THE FOLLOWING: 
1.  This Damper is intended for residential installation only. 
2. 
Installation work and electrical wiring must be done by a qualified person(s) in 
accordance with all applicable codes and standards, including fire-rated construction 
codes and standards.
 
3.  This Damper is not designed to provide combustion air for fuel-burning appliances.  
4. 
Sufficient air is needed for proper combustion and exhausting of gases through the flue 
(chimney) of fuel burning equipment to prevent backdrafting. Follow the heating 
equipment manufacturer’s guideline and safety standards such as those published by 
the National Fire Protection Association (NFPA), and the International Fuel Gas Code 
(IFGC), and the local code authorities.