Make-Up Air Application Guide
Broan Automatic Make-Up Air Damper Product Guide – 04-17-13 5
TableofContents
1. Definitions & Key Terms ........................................................................................... 6
2. What is Make-Up Air? .............................................................................................. 7
3. Broan Automatic Make-Up Air Damper – Product Function ..................................... 8
4. Different Models of the Broan Automatic Make-Up Air Damper ............................... 8
5. When to Use the Broan Automatic Make-Up Air Damper ........................................ 9
6. Common Applications .............................................................................................. 9
6.1 Applications with the LinkLogic™ Model (SMD* model) ................................... 10
6.2 Applications with the Direct-Wired Model (MD*T model) .................................. 10
6.3 Applications with the Universal Model (MD*TU model) .................................... 11
6.4 Applications with the Slave Model (MD*S model) ............................................ 11
7. Planning the Installation ......................................................................................... 12
7.1 Sizing the Damper & the Duct .......................................................................... 12
7.1.1 Using the On-line Make-Up Air Specifier ................................................... 13
7.1.2 Simplified Sizing in the Absence of Building Codes ................................... 14
7.1.3 Testing ....................................................................................................... 14
7.2 Outdoor Air Intake Location.............................................................................. 14
7.3 Outdoor Air Intake Opening Protection ............................................................ 15
7.4 Climatic Considerations for Outdoor Air (OA) Ducts Connected to Central Duct
Systems ..................................................................................................................... 15
8. Typical Installations ................................................................................................ 16
8.1 Damper Connected to Return Side of Central Duct System ............................ 16
8.2 Damper and OA Duct Connected Directly to a Ceiling, Floor, or Wall Register 16
9. Installation .............................................................................................................. 17
10. System Operation ................................................................................................ 17
11. Maintenance ........................................................................................................ 17
12. Frequently Asked Questions (FAQs) ................................................................... 18