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UNIVERSAL
AUTOMATIC
MAKE-UP AIR DAMPER
Broan's Universal Automatic Make-up Air
Damper provides interlocked damper operation
so outside air is only allowed to enter the house
when a connected fan or hood is operating.
For use with any Broan or Best hood operating
over 400 CFM.
Model MD6TU (for 6" round duct)
Model MD8TU (for 8" round duct)
Meets IRC Code M1503.4
•
24 Volt, 60 Hz AC motor
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Normally closed damper
•
Automatically opens when exhaust fans are activated
•
Foam seals minimize air leakage
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24 gauge galvanized steel construction
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Damper adjustment screw for balancing adjustments
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Use with Fresh Air Inlet Model 641FA for 6" dampers
•
or Fresh Air Inlet Model 643FA for 8" dampers (sold
separately)
Includes 24 Volt 20VA transformer
•
Includes pressure switch kit
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SPECIFICATION SHEET
Model MD6S
Model MD6TU
Model MD8S
Model MD8TU
Model MD6S (Slave Damper for 6” round duct)
Model MD8S (Slave Damper for 8” round duct)
Normally closed damper
•
Can be ganged together with any Broan Automatic
•
make-up damper when additional controlled fresh air
inlets/dampers are required to meet make-up air code
requirements.
For use with all Broan Automatic make-up air systems
•
(MD6TU, MD8TU, SMD6, SMD8, MD6T/6TR,
MD8T/8TR).
Broan-NuTone LLC Hartford, Wisconsin www.broan.com 800-558-1711
REFERENCE QTY. REMARKS Project
Location
Architect
Engineer
Contractor
Submitted by Date
Pressure Switch Kit
Included with
MD6TU & MD8TU
21C 99044956A
Transformer
Included with
MD6TU & MD8TU
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