Alan Manufacturing Inc. AZRD-A80VP User manual

2
Comfort Improvement
Description
Saves Energy
The AZRD-A80VP is a 24VAC powered damper with
modulating or variable positioning control using the Manual
Wall Control or Occupancy Sensor. These dampers are
designed for use with ceiling diffusers or grills to control airflow.
Overheating and overcooling of work spaces are common to
many facilities and can be eliminated using the AZRD-A80VP
Damper and Manual Wall Control or Occupancy Sensor.
Additional energy savings can be achieved by automatically
lowering airflow when an office, conference room or other
space is vacant.
The Occupancy Sensor lets you set the airflow level for best
comfort and a lower airflow level to save energy when the
space is vacant and the lights turned off. The Occupancy
Sensor automatically lowers airflow level when the lights are
turned off and raises airflow to your comfort level when the
lights are turned on.
When overheating and overcooling are eliminated, the
conditioned air is automatically directed to areas or zones that
require additional heating or cooling. The HVAC unit runs a
shorter period of time and energy consumption is reduced.
This damper can also be used to lower airflow to unoccupied
spaces providing further energy savings.
The OSL Occupancy Sensor
automatically adjusts airflow for best
comfort when a space is occupied and
lowers airflow for added energy savings
when the space is vacant.
The MWC Manual Wall Control allows you
to set the airflow to the level best suited to
your comfort and optionally lower the
airflow when the space is vacant.
Compatible Controls
MIN MAX
AIRFLOW
The AZRD-A80VP damper actuator has a Close Position limit
that can be used to insure a minimum airflow even when all
dampers are closed. The minimum Close Position can be set
from about 50% closed to fully closed.
Close Cam
Set Screw
Cam Cover
Setting Mechanical Bypass
1
Adjusting Close Limit
Cam set for fully close operation.
Cam set for 50% close operation.
Set the damper to the fully open position by applying 24VAC to
COM and 24VAC terminals. The damper will cycle open-close-
open to calibrate itself.
Loosen the set screw and rotate the Close Cam CW and
tighten the set screw. With the cam in the fully CCW position,
the damper will completely close. In the fully CW position, the
damper will close to about 50% closed allowing some air to
pass even when the user sets the damper to fully closed.
Replace the cam cover.

3
Remove the flex-duct from the ceiling register or diffuser collar.
Mechanical Installation
2
Insert the damper into the collar and secure it with sheet metal
screws.
Attach the flex-duct to the damper and secure the inner sleeve
to the damper using the cable tie provided.
Alternately you can shorten the inner sleeve by the length of
the damper and slide the outer insulation over the damper and
secure it with duct tape. Cut a slot in the insulation to fully
expose the actuator.
24VAC
COM
GND
VP
+5V
Connect to 24VAC transformer
Connect to 24VAC transformer
Connect to occupancy sensor or
manual wall control.
0 to +5V control input. Connect
to occupancy sensor or
manual wall control.
+5VDC output. Connect
to occupancy sensor or
manual wall control.
The damper requires 24VAC power that can be provided by a
40VA, 24VAC transformer. The transformer can be a plug-in
type or a transformer mounted on a junction box in the ceiling.
A single 40VA transformer can power 12 dampers.
Wiring Instructions
3
Wiring 24VAC Power
The damper requires 24VAC power that can be provided by a
40VA, 24VAC transformer. Connect the transformer output to
terminals 24VAC and COM.
To 24VAC
Transformer
COM
Model A80-VP
24VAC
GND
VP
+5V
Wiring Using an OSL
Occupancy Sensor
An AZRD-A80VP damper and OSL Occupancy Sensor are
connected using the GND, VP and +5V terminals.
To 24VAC
Transformer
Model OSL
Occupancy
Sensor
COM
Model A80-VP
24VAC
GND
VP
+5V
+5V VP GND

4
Wiring Using an MWC
Manual Wall Control
An AZRD-A80VP damper and MWC Manual Wall Control are
connected using the GND, VP and +5V terminals.
To 24VAC
Transformer
Model MWC
Manual Wall
Control
COM
Model A80-VP
24VAC
GND
VP
+5V MIN MAX
AIRFLOW CONTROL
AIRFLOW
Red
White
Black
Wiring Using One OSL
Occupancy Sensor to Control
Multiple VPD Dampers
An Occupancy Sensor can control multiple AZRD-A80VP
dampers using the VP and GND terminals. Up to six
AZRD-A80VP dampers can be controlled by an Occupancy
Sensor.
IMPORTANT! Only the +5V terminal on the first
damper is connected to the Occupancy Sensor.
To 24VAC
Transformer
To 24VAC
Transformer
Model OSL
Occupancy
Sesnor
COM
Model A80-VP
24VAC
GND
VP
+5V
COM
Model A80-VP
24VAC
GND
VP
+5V
+5V VP GND
Wiring Using an MWC
Manual Wall Control with
Multiple VPD Dampers
A Manual wall Control can control multiple AZRD-A80VP
Dampers using the VP and GND terminals. Up to six
AZRD-A80VP Dampers can be controlled by a single Manual
Wall Control
IMPORTANT! Only the +5V terminal on the first
damper is connected to the Manual Wall
Control.
To 24VAC
Transformer
To 24VAC
Transformer
Model MWC
Manual Wall
Control
COM
Model A80-VP
24VAC
GND
VP
+5V
COM
Model A80-VP
24VAC
GND
VP
+5V
MIN MAX
AIRFLOW CONTROL
AIRFLOW
Red
White
Black
3-Year Limited Warranty
The 3-year warranty is limited to the repair or replacement
of defective product due to parts failure or defective
workmanship.