RETROFIT ROUND DAMPER (RRD)
Construction
Frame: 18 gauge G-60 or G-90 galvanized steel C channel
with gasket, 20 gauge actuator mounting bracket.
Blade: 20 gauge G-60 or G-90 galvanized steel sur-
rounded by a black EPDM rubber gasket.
Shaft: 1/2" hex damper blade shaft of cold rolled zinc
electroplated steel. The shaft runs through a white
nylon bushing.
Sizes: 5.125", 6.125", 7.125", 8.125" diameters
Electrical Rating: 24 VAC, 50 or 60 Hz
Power Consumption: 1.7 watts running, .7 watts holding.
Transformer sizing VA: 2.5.
Wiring Terminals: M1 (Common), M6 (clockwise, closed),
M4 (counter-clockwise, open)
Nominal Angular Rotation: 90°
Torque: 35 in. lb, (4 Nm)
Nominal Timing: 90 seconds independent of load
Ambient Ratings: 41° F (5° C) to 122° F (50° C), 5-95%
RH non-condensing
Mounting: Direct couple to 1/2" shaft
Agency Listings: NEMA 1, UL listed, class two
Dimensions: See Fig. 1–2
Weight:
RRD5: 3.6 lb
RRD6: 3.8 lb
RRD7: 4.1 lb
RRD8: 4.3 lb
Leakage (Closed): 3.4% at .05" WC
Pressure Drop (Open): <.05" WC
1-13/32
(36)
4-19/32 (116)
RANGE STOPS
2-19/32
(66)
57/64
(22)
Fig. 1. Motor dimensions in in. (mm).
69-1960ES—03
2-5/16
(60)
3-1/2 (89)
MANUAL BLADE
RELEASE
WIRING
TERMINALS
3-1/2 (89)
M23408
2-5/8
(67)
2-17/32
(64)
Fig. 2. RRD damper.
INSTALLATION
Before Installing this Product
1. Read all instructions before installing this product.
Failure to follow instructions can damage the prod-
uct or cause a hazardous condition.
2. Check the ratings given in the instructions and on
the product to verify that the product is suitable for
your application.
3. Installer must be a trained and experienced service
technician.
4. Install the product in an area that is easily accessible
for checkout and service.
5. After completing installation, use these instructions
to check out product operation.
Installing the Retrofit Round
Damper
Select a location for the damper in the ductwork. It is
suggested that the RRD damper be at least 6 feet from the
register for quiet operation.
1. Peel off the back of the cut-out template. Carefully
align the template with the centerline of the duct.
Apply template to the section of round ductwork
where the damper is to be installed. Ensure that the
template is parallel to the ductwork. It is suggested
that the damper be installed with the motor under a
horizontal duct to reduce twist to the duct. It may
also be necessary to support the duct.
2. Drill a starter hole in the cut-out area of the tem-
plate.
3. Cut out the area between the holes.
2
10-3/4 (273)
5-3/8 (137)
1/2 (13)
1/2
(13)
M23409