Greenheck AMD-42 User manual

AMS
AMD-42
AM
Airflow
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 (38°C).
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.
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.
Note: A minimum velocity of 300 fpm (1.5 m/s) is required.
Table of Contents
Pre-Installation Guidelines ................... 2
Electrical Guidelines........................ 2
Installation .............................2-10
Setup and Operation for AMS and AMD Series
Without Factory Supplied Controller ......... 3
Clearances Required Between Damper
Sleeves and Wall/Floor Openings ........... 4
Installing Multiple Damper Section
Assemblies ............................4-5
Multiple Section Damper Wiring ............ 5
Maximum Assembly Tables ................ 5
Inserting Damper into Wall/Floor Openings.... 6
Securing the Damper/Sleeve Assembly to
Wall/Floor Openings.....................7-8
Duct to Sleeve Conneciton ..............9-10
Actuator and Temperature Response
Device Connections ..................... 11
Maintenance............................. 12
Troubleshooting .......................... 12
®
AMD & AMS Series 1
®
Document 474014
AMD & AMS Series
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.

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.
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
Electrical Guidelines
All wiring shall be done in accordance with the
National Electrical Code ANSI/NFPA-70 latest edition,
any local codes that may apply, and wiring diagrams
developed in compliance with the job or project
design and specifications.
Important!
Electrical input may be needed for this equipment.
This work should be performed by a qualified
electrician. Verify power before wiring actuator.
Greenheck is not responsible for any damage to, or
failure of the unit caused by incorrect field wiring. To
avoid causing death or serious bodily harm to building
occupants, follow all instructions carefully. Dampers
must close completely to preserve the integrity of the
fire smoke separation.
Electrical Guidelines
AMD & AMS Series2®

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.
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.
Do not twist or
bow. Mount damper
plumb in the
opening.
AF = BE
AB = CD
CD
EF
Damper Sleeve
Damper Sleeve
Pressure Transducer
Plumb the high pressure parts together
Plumb the low pressure parts together
AMD & AMS Series 3
®

Setup and Operation for AMS and AMD Series Without Factory Supplied
Controller
Label 1: AMD/AMS Label
Each AMD and AMS is shipped with a highly accurate pressure transducer (+/- 0.25% of range) that results in
optimal airflow measurement accuracy (see Figure 1).The pressure transducer outputs a 0-10 VDC signal that is
proportional to the pressure measured by the airflow station. The high pressure limit of the transducer is set at the
factory to optimize the resolution of the reading. The selection is based on the maximum velocity of the application
that was selected at the time the unit was ordered. The selected transducer range is listed on a label affixed to the
AMD or AMS (see example label below). Using the high pressure limit of the transducer and the voltage output of the
transducer the real-time pressure reading can be calculated using the formula:
Ptransducer = (Transducer Output Voltage) * (High Pressure Limit of Transducer) / 10
Formula 1
The pressure reading of the transducer can then be used to calculate the volumetric flow rate going through the
AMS or AMD using the formula:
QSC = Damper Area*K*( Ptransducer)m
where QSC = cfm at standard air conditions
Formula 2
The K & m values are damper specific constants that are listed on the label. The area of the damper is also listed on
the label.
Figure 1: BAPI transducer
PI
d
Formula 2 calculates the cfm at “standard air conditions”. To correct the cfm value to the air density on the job (QSITE))
use the formula and air density correction factor (cf) shown below.
QSITE = cf * QSC
Formula 3
AMD & AMS Series4®

Setup and Operation for AMS and AMD Series With Factory Supplied Controller
Units ordered with a factory controller are supplied with a Greenheck Vari-Green constant volume controller. The
Vari-Green constant volume controller is highly configurable, but is shipped from the factory preprogramed as
ordered and thus does not normally required field configuration. The full installation and operation manual for the
controller is available at http://www.greenheck.com/products/detail/91 under the Instruction Manual tab.
In its default operating mode the controller will modulate the damper’s actuator to achieve a cfm setpoint. The
controller receives the cfm setpoint via an analog input. The controller also has an analog output that is proportional
to the real-time cfm that is going through the AMS/AMD. The following section describes how to determine the
voltage corresponding to the desired cfm setpoint and how to convert the voltage output into cfm.
Constant Volume
Varigreen Damper
Controller
Duct Air
Temp
Air Density Correction Factors
Elevation Dimensions in feet and (meters)
°F (C°)
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000
(0) (152.4) (304.8) (457.2) (609.6) (762) (914.4) (1066.8) (1219.2) (1371.6) (1524) (1676.4) (1828.8) (1981.2) (2133.6) (2286) (2438.4) (2590.8) (2743.2)
-40 (-40) 0.79 0.81 0.82 0.84 0.85 0.87 0.88 0.90 0.92 0.93 0.95 0.97 0.99 1.01 1.02 1.04 1.06 1.08 1.10
-20 (-29) 0.83 0.85 0.86 0.88 0.89 0.91 0.93 0.94 0.96 0.98 1 1.01 1.03 1.05 1.07 1.09 1.11 1.14 1.16
0 (-18) 0.87 0.88 0.9 0.92 0.93 0.95 0.97 0.99 1 1.02 1.04 1.06 1.08 1.10 1.12 1.14 1.16 1.19 1.21
20 (-7) 0.91 0.92 0.94 0.96 0.97 0.99 1.01 1.03 1.05 1.07 1.09 1.11 1.13 1.15 1.17 1.19 1.22 1.24 1.26
40 (4) 0.94 0.96 0.98 1 1.01 1.03 1.05 1.07 1.09 1.11 1.13 1.15 1.17 1.20 1.22 1.24 1.27 1.29 1.31
60 (15) 0.98 1 1.02 1.04 1.05 1.07 1.09 1.11 1.13 1.16 1.18 1.20 1.22 1.24 1.27 1.29 1.32 1.34 1.37
70 (21) 1 1.02 1.04 1.06 1.07 1.09 1.11 1.14 1.16 1.18 1.20 1.22 1.24 1.27 1.29 1.32 1.34 1.37 1.39
80 (27) 1.02 1.04 1.06 1.08 1.10 1.12 1.14 1.16 1.18 1.20 1.22 1.24 1.27 1.29 1.32 1.34 1.37 1.39 1.42
100 (38) 1.06 1.08 1.10 1.12 1.14 1.16 1.18 1.20 1.22 1.24 1.27 1.29 1.32 1.34 1.37 1.39 1.42 1.44 1.47
120 (49) 1.09 1.11 1.13 1.16 1.18 1.20 1.22 1.24 1.27 1.29 1.31 1.34 1.36 1.39 1.41 1.44 1.47 1.50 1.53
140 (60) 1.13 1.15 1.17 1.19 1.22 1.24 1.26 1.29 1.31 1.33 1.36 1.38 1.41 1.44 1.46 1.49 1.52 1.55 1.58
160 (71) 1.17 1.19 1.21 1.23 1.26 1.28 1.30 1.33 1.35 1.38 1.40 1.43 1.46 1.48 1.51 1.54 1.57 1.60 1.63
180 (82) 1.21 1.23 1.25 1.27 1.30 1.32 1.35 1.37 1.40 1.42 1.45 1.48 1.50 1.53 1.56 1.59 1.62 1.65 1.68
200 (93) 1.25 1.27 1.29 1.31 1.34 1.36 1.39 1.41 1.44 1.47 1.49 1.52 1.55 1.58 1.61 1.64 1.67 1.70 1.74
Table 1 - Air Density Correction Factor
AMD & AMS Series 5
®

Controller’s Analog Output Proportional to Real-Time Airflow
The controller outputs an analog signal (configurable for either 0-10 or 2-10 VDC) that is proportional to the real-time
airflow rate (cfm) going through the AMD/AMS. The cfm corresponding to the voltage output can be determined
using the following formulas:
0-10 VDC output
Q = (C * Vmax * A) / 10
2-10 VDC output
Q = ((C-2) * Vmax * A) / 8
Formula 4
Where:
C= Voltage Output Signal (VDC)
Q= Real-time Airflow (cfm)
V max = Maximum Velocity as specified at the time the unit was ordered (fpm)
A= Face Area of the Damper (ft2)
Note that Vmax and A are found on the label affixed to the AMD/AMS next to the transducer (see Label 1)
Setting the Flow Setpoint
The controller accepts an analog input (configurable for either 0-10 or 2-10 VDC) that is proportional to a target
volumetric airflow rate (cfm). The voltage corresponding to the setpoint can be determined using the following
formulas:
0-10 VDC setpoint
C = Q /(Vmax * A) *10
2-10 VDC setpoint
C = Q /(Vmax * A) *8 + 2
Formula 3
Where:
C= Flow Setpoint (VDC)
Q= Desired Airflow (cfm)
V max = Maximum Velocity as specified at the time the unit was ordered (fpm)
A= Face Area of the Damper (ft2)
Note that Vmax and A are found on the label affixed to the AMD/AMS next to the transducer (see Label 1)
Example: The BMS desires 6,000 cfm through a 24 in. x 24 in. AMD-42 that was ordered with a maximum velocity of
2,000 fpm. Find the voltage setpoint that corresponds to 6,000 cfm:
C = 6,000 / (2,000 * 4) * 10 = 7.5VDC (0-10 VDC)
C = 6,000 / (2,000 * 4) * 8 +2 = 8 VDC (2-10 VDC)
AMD & AMS Series6®

Controller Display
The controller has a two line backlit LCD display. By using the up and down arrows on the controller’s cover the
display can be toggled to show one of three sets of data:
• Top Screen: Real-Time CFM and CFM Setpoint
• Middle Screen: Real-Time Velocity (fpm) and Velocity Setpoint
• Bottom Screen: Real-Time Differential Pressure Measurement and Actuator Position
Wiring the Controller
The basic wiring of the controller is shown below in Figure 2. The controller’s three terminal blocks can be accessed
by opening the cover of the enclosure.
Powering the Controller
The controller is powered by applying electrical power to the “Power In” terminal block. The controller can run off of
24 VAC +/- 20% 50/60 Hz ; 24 VDC +/- 10%.
Connecting the Pressure Transducer
The second terminal block is labeled “Remote Sensor” and is used to connect the pressure transducer. The three
terminals from the Remote Sensor block connect directly to the pressure transducer as shown in Figure 2. The
controller supplies the transducer with its power and reads the pressure signal.
Connecting the Damper Actuator
The actuator can be powered either by the same power supply as the controller (as shown in Figure 2) or by running
a separate power supply to terminals 4 and 5 of the factory supplied terminal block on the AMD/AMS. In addition,
the “Control Out” from the controller (terminal 7) must be run to terminal 6 on AMD/AMS terminal block.
Connecting the Flow (or position) Setpoint Signal
Connect the 0-10 VDC or 2-10 VDC flow (or position) setpoint to the controller’s terminals 1 and 3. The controller’s
terminal 1, labeled Remote Setpoint, is the positive terminal and the controller’s terminal 3 is the negative terminal.
Connecting to the Flow Output Signal
Connecting to controller terminals 6 and 3 allows the user to read the 0-10 VDC or 2-10 VDC flow output that is
proportional to the cfm measured by the AMD/AMS. To convert the voltage signal to cfm see the section above on
Controller’s Analog Output Proportional to Real-Time Airflow.
Override Mode
See the full Vari-Green constant volume controller installation and operation manual for a description of the override
feature. The override feature can be activated by closing the contacts of an external relay across terminals 2 and 3
(or by simply putting a jumper wire across them).
AMD & AMS Series 7
®

All wiring above terminal block done at factory
when the actuator is externally mounted. When
the actuator is internally mounted the actuator
must be wired to the terminal block in the field.
Vari-Green Constant Volume Controller Wiring Diagram
Figure 2
AMD & AMS Series8®

Elbows
D/2
1D
90° Vaned Elbow
1D
5D
90°Elbow Without Vanes
D/2
2D
Round Sweep Elbow
D/2
2D
Sweep Elbow
3D
Centrifugal Fan Discharge
1.5D
Centrifugal Fan Inlet
5D
Vane Axial Fan Discharge
2D
Vane Axial Fan Inlet
Optimal Placement for AMS & AMD Damper Series
Fans
AMD & AMS Series 9
®

Transitions
1D
Į
ĮTransition 1
D/2
Į
Į
Transition 2
1D
Į
Į
Transition 3
D/2
Transition 4
Į
Į
1D
Į
Transition 5
1D
Į
Transition 6
1D
Į
Transition 7
D/2
Transition 8
Į
Dampers
1D
D1
4D
D2
AMD & AMS Series10 ®

2D
Fan Discharge 1
MIN
3D
Fan Discharge 2
Circular Duct: D = Duct Diameter
4 x Width x Height
H
Rectangular Duct: D=
Air Handling Units
1D Louver
Air Handler with Louver
Hood
Return Air
1D
Takeoffs
3D
Branch Takeoff 1
3D
Branch Takeoff B2B
2D
Branch Takeoff 3
1D
Branch Takeoff 4
Branch Takeoff B2A
AMD & AMS Series 11
®

Greenheck's dampers are designed to be trouble free and hassle free under normal operation. Dampers are to
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.
Damper Maintenance
474014 • AMD & AMS Series, Rev. 12, September 2018 Copyright 2018 © Greenheck Fan Corporation12
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications
without notice.
Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature
section of the website at Greenheck.com/Resources/Library/Literature.
®
Phone: [phone] • Fax: [phone] • Parts: 800.355.5354 • E-mail: [email protected] • Website: www.greenheck.com
Our Commitment