Greenheck AMD-23-TD Installation Manual

478799 AMD-xx-TD Series

Installation, Operation, and Maintenance Instructions

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.

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).

Due to continuing research, Greenheck reserves the right to change specifications without notice.

Pre-Installation Guidelines

The basic intent of a proper installation is to secure the AMD-xx-TD 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 your schedule for proper damper locations within the building. Visually inspect the damper for damage.

2. When you lift or handle the damper use the sleeve or frame. Do not lift damper using blades, linkage, actuators, probes, or jackshafting. When you handle multiple section 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.

Pre-Installation Guidelines cont...

4. Damper must be installed into duct or opening square and free of twist or other misalignment.

Spreader Bar

Attachments

Multi section dampers

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, actuator, and transmitter 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 the 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.

Installation- Failure to follow instructions will void all warranties

1. Ensure the AMD-xx-TD series damper is mounted with measurement probes upstream of the damper.

2. Your 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, you can cycle dampers after

installation to assure proper operation. On multiple section assemblies all sections should open and close simultaneously.

6. AMD-xx-TD series more than one section high will be shipped separately in individual sleeves. Using the provided RJ-45 cable connect the bottom probe on the top section to the top probe on the bottom section. The bottom section has the transmitter mounted to it.

Do not twist

AF = BE

AB = CD

or bow. Mount damper plumb in the opening.

Electrical Guidelines

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.

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.

Connect electrical connection to terminal strip as shown in drawings on pages 4 and 5.

Electrical input may be needed for this equipment. This work should be performed by a qualified electrician.

SAFETY DANGER !

Setup and Operation for AMD-xx-TD Series Damper

All AMD-xx-TD’s are supplied with a Vari-Green® airflow rate transmitter that is factory wired to one or more Vari-Green airflow measurement probe(s). The transmitter has been configured at the factory with customer supplied parameters. For normal applications the transmitter’s configuration should not need to be modified in the field. However, if field configuration is necessary please reference the Vari-Green transmitter Installation, Operation, and Maintenance Manual available at www.greenheck.com.

Once electrical power is applied, the transmitter will go through a standard start-up sequence during which it will identify and enable each airflow sensor. This will take approximately 30 seconds. Once the start-up sequence has been completed the transmitter's display will show the measured volumetric airflow rate, velocity, and ambient air temperature (see below). Under normal operation a dot in the upper right corner of the display will blink rapidly (4 times per second).

You can order AMD-xx-TD’s with or without a factory supplied controller. When a factory supplied controller is ordered, the controller can be configured for either analog operation or operation via a BACnet MS/TP connection. Setup and operation for these different options are described on the following pages.

AMD-xx-TD Series Dampers without a Factory Supplied Controller

Units ordered without a factory supplied controller are supplied with a standard modulating actuator. The Vari-Green transmitter and actuator are wired to a factory supplied terminal block. Figure 1 shows the field wiring side of the terminal block.

The 0-10 VDC analog output at terminals 3 and 4 comes from the Vari-Green transmitter and is proportional to the velocity going through the AMD-xx-TD. A 10 VDC signal represents the maximum velocity that was selected at the time the unit was ordered. The selected maximum velocity and the area of the AMD-xx-TD are listed on a label adjacent to the terminal block. An example of how you can determine the velocity and/or cfm going through the unit is shown below.

Figure 1

Example 1: Determine the CFM from a 24 in.

x 24 in. AMD-xx-TD (area of 4 ft2) with a selected maximum velocity of 2,000 fpm and a voltage reading across terminals 3 and 4 of 3.5 VDC.

Measured Velocity = Max Velocity * (Measured Voltage / 10) Measured Velocity = 2,000 * (3.5 / 10) Measured Velocity = 700 fpm

and

Measured CFM = Measured Velocity * Area Measured CFM = 700 fpm * 4 ft2 Measured CFM = 2,800 cfm

Factory Installed

Terminal Block

2 3



24VAC

0-10VDC Output

Proportional to

On multiple section high dampers, the

*** ***

actuators on the sections without the

terminal block will need to be field wired

4 5

Control



Signal to Actuator

Flow

into Terminals 1, 2, & 5



AMD-XX-TD w/o Factory

Supplied Controller

AMD-xx-TD’s Ordered with a Factory Supplied Controller

When you order a factory supplied controller, it comes with a Greenheck exclusive VAFB24-BAC-GTD actuator which has the controller integrated inside of it. The actuator/controller is configured by the factory at the time the unit is ordered for either analog or BACnet operation. This selection is made by setting the Setpoint Source datapoint to Local AI or BACnet. A complete list of the all the BACnet datapoints is listed in Table 1 (page 7).

AMD-xx-TD Series Dampers with an Analog Factory Supplied Controller

Figure 2 shows field wiring for an AMD-xx-TD ordered with a factory supplied controller configured for analog operation.

Factory Installed Terminal Block

24VAC

Figure 2

4 5



Flow

2 3



0-10 VDC Output

Proportional to

0-10VDC

Input

Setpoint



AMD-XX-TD w/Analog

Factory Supplied

Controller

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