RenewAire MD Series Motorized Rectangular Damper Owner’s Manual

MD Series Motorized Rectangular Damper

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Specifications

• Damper Type: Round Motorized Damper

• Diameters: 6, 8

• Operating Mode: Normally closed, spring
  return

• Voltage: 24VAC, 0.36A

Product Information

The MD Series Motorized Dampers are designed for indoor ductwork
installation. They come in diameters of 6 and 8 inches and operate
in a normally closed mode with spring return functionality. The
dampers are made of corrosion-resistant galvanized steel and
feature a foam blade seal for enhanced performance. The 24VAC
voltage requirement ensures efficient operation.

Key Benefits

• Quick installation onto ERV round duct collars
• Floating motor mount for proper alignment
• Clutch/coupler for increased service life
• Flow control adjustment for precise blade positioning

Product Usage Instructions

1. Installation: Attach the motorized damper onto
   the designated duct collar using appropriate fasteners. Ensure
   proper alignment of the motor, shaft, and damper to prevent
   binding.

2. Electrical Connection: Connect the damper to a
   24VAC power source using the provided plug-in transformer (for
   MD6-PT) or follow wiring guidelines for MD6-FM.

3. Adjustment: Use the flow control adjustment
   feature to set the desired blade position for optimal airflow
   control.

4. Maintenance: Regularly inspect the damper for
   any debris buildup or obstructions that may affect its operation.
   Clean and lubricate moving parts as needed.

FAQ

Q: Can the motorized damper be used outdoors?

A: No, the motorized damper is specifically designed for indoor
ductwork installation only to ensure proper functionality and
longevity.

Q: How many moving parts does the clutch/coupler system

reduce?

A: The clutch/coupler system reduces the number of moving parts
in the damper assembly, contributing to a longer service life and
improved reliability.

Note: For the most up-to-date information and support, please
visit RENEWAIRE.COM or contact customer service at
1.800.627.4499.

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MD SERIES MOTORIZED DAMPERS (6″ & 8″) ACCESSORY

MOTORIZED DAMPERS

SPECIFICATIONS
Damper Type: Round Motorized Damper Diameters: 6″, 8″ Operating Mode: Normally closed, spring return Voltage: 24VAC, 0.36A

Standard Features: Corrosion-resistant galvanized steel Foam blade seal FM interlock (MD6-FM only) Plug-in transformer (MD6-PT only)

Note: Motorized damper designed for indoor ductwork installation only.

APPLICATIONS
Prevent unwanted airflow through the energy recovery ventilator (ERV) when adverse outdoor air conditions, such as wildfire smoke are present or to meet local codes. The ENERGY STAR Single Family New Homes and ENERGY STAR Multifamily New Construction programs require a motorized damper on the ERV supply airstream if connected to a ducted return of the HVAC system to restrict airflow during ventilation off-cycle and occupant override. The MD Series dampers installed per recommend methods (see MD Series manual) on the SA duct collar will meet this requirement.
KEY BENEFITS
u Quick to install as damper fits directly onto ERV round duct collars u Floating motor mount assures proper alignment of motor, shaft and damper to prevent binding u Clutch/coupler reduces the number of moving parts for greater service life u Flow control adjustment so that the damper blade can be blocked from opening or closing 100%, if applicable
4 5/8″

2 15/16″

1 3/8″
SPRING/STOP/OVER-TRAVEL CLUTCH ASSEDMBLY

D

FOAM STRIP SEAL 10″

SELECTION GUIDE

Damper Kit

MD6-FM

MD6-PT

Diameter ERV has a “DAMP” terminal* Furnace interlock required

6″ No Yes

• ERVs with “DAMP” terminal can power one MD damper. ** Furnace interlock may still be used, but must be purchased separately.

MD6

MD8

8″ Yes No**

Subject to change without notice: RENEWAIRE.COM | 1.800.627.4499

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