AUTOMATIC MAKE-UP AIR
DAMPER WITH TRANSFORMER
& PRESSURE SWITCH
READ AND SAVE THESE INSTRUCTIONS
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR
INJURY TO PERSONS, OBSERVE THE FOLLOWING:
1. 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.
2. Validated performance testing certified for use with BEST,
Broan, and Broan Elite range hoods.
3. This unit is not designed to provide combustion air for fuel-
burning appliances.
4. Do not connect the unit directly to a combustion appliance of
any type.
5. 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 American Society for Heating, Refrigeration and
Air Conditioning Engineers (ASHRAE), and the local code
authorities.
6. Before servicing or cleaning unit, switch power off at service
panel and lock the service disconnecting means to prevent
power from being switched on accidentally. When the service
disconnecting means cannot be locked, securely fasten a
prominent warning device, such as a tag, to the service panel.
7. When performing installation, servicing or cleaning the unit, it is
recommended to wear safety glasses and gloves.
8. During extreme weather events including snow storms, ensure
that the intake area for the outside air duct is not blocked and
able to provide a clear pathway for outside air to enter the
system.
9. When cutting or drilling into wall or ceiling, do not damage
electrical wiring or other hidden utilities.
10. When notching or drilling into framing including floor supports,
rim joists, and wall studs, comply with code and manufacturer
limitations on allowable modifications to these structural
members.
11. This unit is intended to be installed within the home in a location
protected from moisture.
12. This unit must be in an accessible location which allows for
inspection of the unit.
13. Use this unit only in the manner intended by the manufacturer.
If you have questions, contact the manufacturer at the address
or telephone number listed in this document.
14. When federal, provincial or state legislation comprises more
restrictive installation and/or certification requirements, the
aforementioned requirements prevail on those of this document
and the installer agrees to conform to these at his own expense.
FOR RESIDENTIAL USE ONLY
MODELS G6MD • G8MD • G10MD
CAUTION
1. Do not locate outside air inlet near hazardous materials or explosives.
2. Unit shall not be installed to introduce air from crawlspaces, garages,
attics, adjacent dwelling units, or other locations within the building
shell. Unit shall be installed to introduce air directly from outdoors.
3. Do not run the outside air duct directly above or closer than 2 ft to
any furnace or its supply plenum, boiler, or other heat producing
appliance.
4. Any ductwork used in conjunction with the Damper must be installed
in compliance with all local and national codes that are applicable.
5. Do not operate the Damper for fresh air introduction until all system
filters, including the central duct system filter, have been installed per
the system design.
6. Please read the unit specification label on the product for further
information and requirements.
7. The Damper's outdoor air intake, ducting, and any filters should be
inspected and maintained on a regular basis.
8. Insulate the duct and damper to prevent build-up of condensation in
cold weather climates. Vapor barriers on both sides of insulation are
recommended.
Page 1