SPECIFICATION SHEET
Broan-NuTone LLC Hartford, Wisconsin www.broan.com 800-558-1711
REFERENCE QTY. REMARKS Project
Location
Architect
Engineer
Contractor
Submitted by Date
UNIVERSAL
AUTOMATIC
MAKE-UP AIR DAMPER
21C 99044956A
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
•
Normally closed damper
•
Automatically opens when exhaust fans are activated
•
Foam seals minimize air leakage
•
24 gauge galvanized steel construction
•
Damper adjustment screw for balancing adjustments
•
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
Model MD6S (for 6" round duct)
Model MD8S (for 8" round duct)
•
Use with the MD6TU or MD8TU when additional
dampers are required to meet code requirements.
•
Can be ganged and controlled using any Broan
damper containing a transformer (MD6TU, MD8TU,
SMD6, SMD8, MD6T/6TR, MD8T/8TR).
Model MD6S
Model MD6TU
Model MD8S
Model MD8TU
Transformer
Included with
MD6TU & MD8TU
Pressure Switch Kit
Included with
MD6TU & MD8TU
Comments to this Manuals