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RETROFIT ROUND DAMPER (RRD)
ZONE
1, 2, 3, ETC.
R Y W G C M6 M4 M1
R Y W G
ZONE
THERMOSTAT
M1
M6
M4
Fig. 6. Wiring multiple RRD dampers using wire nuts.
ADJUSTMENTS
Manual Blade Adjustment
To verify correct range of motion, depress the manual blade
adjustment button. While this is pressed, the gears are
disengaged, allowing the blade to be manually opened or
closed by turning the damper blade shaft. See Fig. 1.
Position Indicator
The position indicator points toward the position of the damper
blade to identify if the blade is open, closed, or at an
intermediate position. A slot at the end of the damper blade
shaft also indicates blade position.
Range stops
The RRD damper motor can be adjusted to prevent complete
closure of the blade. This is useful in zone systems where it is
not possible to install a bypass damper.
To set the range stop to prevent complete closure:
1. Locate the range stop adjustment screw on the top of
the motor to the right blade shaft. This is at the extreme
counter-clockwise end of travel.
2. Using a small Phillips head screwdriver, loosen the set
screw.
3. Move the end-stop block to the new position
4. Secure the set screw.
5. Verify the new range of motion while depressing the
manual blade release button.
TROUBLESHOOTING
Damper operates backwards
Damper does not operate
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
® U.S. Registered Trademark
© 2006 Honeywell International Inc.
69-1960
M.S. 06-06
WIRE NUT
M1
M6
M4
M23410
Verify correct damper wiring as shown in Fig. 4–6.
1. Verify damper wiring using checkout methods listed in this document.
2. Verify that the duct is round and not making the blade stick. Depress the
manual blade release button and manually turn the blade shaft to verify
smooth opening and closing operation.
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
CHECKOUT
CAUTION
Possible Equipment Damage
Do not manually open or close the damper unless the
manual blade release button is depressed
To check out the RRD damper using 24 VAC transformer:
1. Connect 24 VAC common to the M1 (common) terminal
on the actuator.
2. Connect 24 VAC hot to the M6 terminal to close the
damper.
3. Observe the blade move clockwise and stop in the
closed position.
4. Remove the 24 VAC hot wire from the M6 terminal.
5. Connect the 24 VAC hot wire to the M4 terminal.
6. Observe the blade move counter-clockwise and stop in
the open position.
7. This verifies correct operation.
To check out the RRD damper when connected to a zone
control panel. (This assumes that the damper has been wired
correctly as shown in Fig. 4.)
1. Begin with all zone thermostats set so that they are not
calling for heat, cool, or fan.
2. To test the damper on zone 1, set the thermostat on
zone 2 to the fan "On" mode so that it calls for fan.
3. This will make the damper on zone 1 close
4. Observe damper one closing on its position indicator.
The damper will take 90 seconds to close.
5. Set zone 2 thermostat to the fan "Auto" mode so that it
is no longer calling for fan. The zone 1 damper will now
return to the open position. This completes the test of
the zone 1 damper.
6. To test the damper on zone 2, set that thermostat on
zone 1 to the fan "On" mode so that it calls for fan.
7. Observe the damper on zone 2 close.
8. Also observe that zone 3 or others, if connected, also
close when the zone 1 thermostat is in the fan "On" mode.
9. When complete, set the zone 1 thermostat to the fan
"Auto" mode. All zones will now return to the open
position.
10. This verifies correct damper wiring and operation.
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