Greenheck AMD-42 Manual

Part number 474014
SAFETY WARNING:
Improper installation, adjustment, alteration, service or maintenance can cause property damage,
injury or death. Read the installation, operating, and maintenance instructions thoroughly before
installing or servicing this equipment.
Due to continuing research, Greenheck reserves the right to change specifications without notice.
RECEIVING AND HANDLING
Upon receiving dampers, check for both obvious and hidden damage. If damage is found, record all
necessary information on the bill of lading and file a claim with the final carrier. Check to be sure that all parts
of the shipment, including accessories, are accounted for.
Dampers must be kept dry and clean. Indoor storage and protection from dirt, dust and the weather is highly
recommended. Do not store at temperatures in excess of 100°F (37ºC).
This manual is the property of the owner, and is required for future maintenance. Please leave it with the
owner when the job is complete.
AMS & AMD Damper Series
Installation, Operation, and Maintenance Instructions
AMS AMD-42
Pre-Installation Guidelines
The basic intent of a proper installation is to secure the AMS & AMD series damper into the opening in such a
manner as to prevent distortion and disruption of damper operation. The following items will aid in completing
the damper installation in a timely and effective manner.
1) Check the schedules for proper damper locations within the building. Visually inspect the damper for
damage.
2) Lift or handle damper using sleeve or frame. Do not lift damper using blades, linkage, actuators, pick-ups,
or jackshafting. When handling multiple sections assemblies, use sufficient support to evenly lift at each
section mullion (see drawing). Do not drag, step on, apply excessive bending, twisting, or racking.

Pre-Installation Guidelines cont......
3) Do not install screws in damper frame that will interfere with unexposed blade
linkage and prevent damper blades from opening and/or closing.
4) Damper must be installed into duct or opening square and free of twist or
other misalignment. Damper must not be squeezed or stretched into duct or
opening. Out of square, racked, twisted or misaligned installations can cause
excessive leakage and/or torque requirements to exceed damper/actuator
design.
5) Damper and actuator must be kept clean, dry and protected from dirt, dust
and other foreign materials prior to and after installation. Examples of such
foreign materials include but are not limited to:
a) Mortar dust
b) Drywall dust
c) Firesafing materials
d) Wall texture
e) Paint overspray
6) Damper should be sufficiently covered as to prevent overspray if wall texturing or spray painting will be
performed within 5 feet (1.5m) of the damper. Excessive dirt or foreign material deposits on damper can
cause excessive leakage and/or torque requirements and inaccurate airflow measurement to exceed
damper/actuator design.
7) ACCESS: Suitable access (actuators maintenance, etc.) must be provided for damper inspection and
servicing. Where it is not possible to achieve sufficient size access, it will be necessary to install a
removable section of duct.
Spreader Bar
Attachments
Multi section dampers
Installation- Failure to follow instructions will void all warranties
1. Ensure the AMS or AMD series damper is mounted with airflow straightener upstream of the damper.
2. Duct opening or opening square should measure 1/4 inch (6mm) larger than damper dimension and should
be straight and level.
3. Use shims between damper frame and duct opening or opening space to prevent distortion of frame by
fasteners holding it in place. Brace at every horizontal mullion and vertically brace at every 8 feet (2.4m) of
damper width for strength. Dampers in high velocity (2000 fpm [610m per second]) may require more
bracing. Note: Greenheck dampers are specifically designed and engineered for structural integrity based on
model and conditions. Attachment, framing, mating flanges, and anchoring of damper assemblies into
openings, ductwork, or walls is the responsibility of the installer. Design calculations for these retaining and
supporting members should be determined by field engineers for that particular installation.
4. Individual damper sections, as well as entire multiple section assemblies must be
completely square and free from racking, twisting, or bending. Measure diagonally
from upper corners to opposite lower corners of each section.
5. Damper blades, axles, and linkage must operate without binding. Before system
operation, cycle dampers after installation to assure proper operation. On multiple
section assemblies all sections should open and close simultaneously.
2
Do not twist
or bow. Mount
damper plumb
in the opening.
AB
AF = BE
AB = CD
CD
EF

3
6) Installing two section high AMD series
together.
AMD's more than one section high will be
shipped separately in individual sleeves.
The high and low pressure ports need to be
plumbed together and then plumbed back to
the pressure transducer.
SAFETY DANGER !
Electrical input may be needed for
this equipment. This work should be
performed by a qualified electrician.
Electrical Guidelines
SAFETY CAUTION !
Verify power requirements before wiring
actuator. Greenheck is not responsible for
any damage to, or failure of the unit caused
by incorrect field wiring.
Electrical and/or pneumatic connections to damper actuators should be made in accordance with wiring and piping
diagrams developed in compliance with applicable codes, ordinances and regulations.
Connect electrical connection to terminal strip as shown on drawing (see figure 1).
Installation cont...
Setup and Operation for AMS and AMD Series Without Factory Supplied Controller
The factory supplied pressure transducer supplies a 0-10 VDC output that is proportional to the pressure mea-
sured by the airflow station. Using the output from the transducer a controller can be programmed to calculate
airflow using the formulas:
Ptransducer = Voltage x 0.2
CFM = Area * K * (Ptransducer)m
The K & m values are damper specific factory supplied variables that will be printed on a label on the side of the
damper:
Damper Model: AMD-42
Damper Width: 24.00
Damper Height: 24.00
Q = Airflow (cfm)
P = Damper Pressure (in *wc)
K = 8,720
m = 0.4940
Area = 4.0
Q = Area * K * Pm
Assy Date: 5/6/10
Assembled in USA
Sales Order: 6203049 Line: 20.00
Item Number: AMD-42-24.000 x 24.000
P.O. 24615403
Actuator: MS7510A2008
Qty: 1of 1
Label 1 Label 2
Damper Sleeve
Damper Sleeve
Pressure Transducer
Plumb the high pressure parts together
Plumb the low pressure parts together

4
Basic Setup
1. Mount the control box higher than the damper to avoid condensation from running back into the pressure
transducer.
2. Wire the actuator terminals to the control box terminal strip as shown in figure 1.
• Wiretheactuatorpower,actuatorterminals1and2,tothecontrolboxterminalslabeledP1andP2
respectively.
• Wiretheactuatorpositioncommand,actuatorterminal3,tothecontrolboxterminallabeled3.
3. Plumb the air pressure pickups from the damper to the control box as shown in figure 1. Make sure that the
air pressure pickup fitting labeled “High” is plumbed back to the control box fitting labeled “High”. Likewise,
the air pressure pickup fitting labeled “Low” should be plumbed back to the control box fitting labeled “Low
Pressure”.
4. Wire the airflow setpoint command (+) to control box terminal 2 and the airflow setpoint command ground (-)
to control box terminal 1. Note: The control signal source must have an impedance of less than 2,000 ohms.
The correct flow setpoint signal can be calculated based on the following formula:
C = Q/ (200*A)
Where:
Q = Desired Airflow (cfm)
C = Flow Set-point (Vdc)
A = Face Area of the damper (ft2)
Example: the building desires 6,000 cfm through a 24”x 24” AMD-42
A= (24*24)/144 = 4 ft2
C=6,000 / (200 * 4) =7.5 Vdc
Setup and Operation for AMD Series With Factory Supplied Controller
Figure 1 wiring diagram

5
Optimal Placement for AMS & AMD Damper Series
Fans
3D
Centrifugal Fan Discharge
1.5D
Centrifugal Fan Inlet
5D
Vane Axial Fan Discharge
Elbows
D/2
1D
90° Vaned Elbow
1D
5D
90°Elbow Without Vanes
2D
Vane Axial Fan Inlet
D/2
2D
Round Sweep Elbow
D/2
2D
Sweep Elbow

6
Optimal Placement for AMS & AMD Damper Series
Transitions
1D
α
αTransition 1
D/2
α
α
Transition 2
1D
α
α
Transition 3
D/2
Transition 4
α
α
1D
α
Transition 5
1D
α
Transition 6
1D
α
Transition 7
Dampers
1D
D1
4D
D2
D/2
Transition 8
α

7
Optimal Placement for AMS & AMD Damper Series
Takeoffs
3D
Branch Takeoff 1
3D
Branch Takeoff B2B
2D
Branch Takeoff 3
1D
Branch Takeoff 4
Branch Takeoff B2A
Air Handling Units
1D Louver
Air Handler with Louver
Hood
Return Air
1D

8
Copyright © 2011 Greenheck Fan Corporation
AMD/AMS IOM Rev. 4 August 2011
WARRANTY
Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one
year from the shipment date. Any units or parts which prove to be defective during the warranty period will be
repaired or replaced at our option. Greenheck shall not be liable for damages resulting from misapplication or
misuse of its products. Greenheck will not be responsible for any installation or removal costs. Greenheck will
not be responsible for any service work or backcharges without prior written authorization.
Damper Maintenance
Greenheck's dampers are designed to be trouble free and hassle free under normal operation. Dampers are
to be installed square and straight so as to prevent binding during operation. The following annual damper
maintenance suggestions will help to insure proper damper operation and increase the life expectancy of the
damper.
Foreign Matter Over the course of time, dirt and grime may collect on damper surfaces. The
damper surfaces should be cleaned to prevent hindrance to airflow.
Moving Parts Make sure that parts such as linkage, bearings, blades, etc. that are intended
to move freely, can do so. Lubricating these components can prevent possible
rusting and unnecessary friction increase. Use only a moli-spray oil or similar
graphite based oil as regular lubricating oil will attract dirt.
Bearings. Synthetic, oil impregnated, and ball bearings (without grease fittings)
do not require lubrication. Ball bearings with grease fittings require only minimal
grease.
Closure Remove foreign materials that may be interfering with blade closure or effective
sealing of the blades with each other or with the frame.
Operation While operating the damper through its full cycle, check to see that the blades
open and close properly. If there is a problem, check for loose linkage, especially
at the actuator. Tighten the linkage where required.
Optimal Placement for AMS & AMD Damper Series
Air Handling Units . . .
2D
Fan Discharge 1
MIN
3D
Fan Discharge 2
Circular Duct: D = Duct Diameter
4 x Width x Height

Rectangulat Duct: D=