Greenheck ABD Series Installation and operating instructions

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.

Table of Contents

General Installation............................................ 2

Round Duct/Opening Installation ...................... 2

Square Duct/Box Transition Installation ........... 3

Grille Mount Box Installation ............................. 3

Operation - CFM Set-Point Adjustment ............ 4

Maintenance ..................................................... 4

See complete marking on

product.

UL 2043 Classiﬁcation

R39668

These instructions apply to the automatic balancing damper, including dampers with a transition and a grille mount

box. The ABD is a reversible product and can be used for exhaust or supply applications.

NOTE: The ABD is air ﬂow dependent and the direction of airﬂow through the product is critical for proper operation.

Automatic Balancing Dampers 1

Document 483591

ABD 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.

General Installation

Greenheck’s ABD dampers can be installed anywhere a constant volume of air is required. Assure that the airﬂow

direction is properly aligned for your application (see Figure 1).

The ABD is designed for installation without the need for any screws or fasteners. The adjustment of the cfm

set-point is accomplished by positioning the set-point indicator to the notch corresponding to the desired cfm (see

Figure 2). The damper must be mounted such that the set-point ridges are located on the bottom of the damper

(see Figure 3).

Figure 4

Figure 2

Figure 3

Spiral Duct or Round Collar

(by others)

Round Duct/Opening Installation

The damper can be pressed into a round duct without the need for fasteners. The provided perimeter gasket

provides a press ﬁt grip to hold the valve in place without the need for additional fasteners or adhesives.

Remove the adapter plate from the end of the ABD and slide the damper into either spiral duct or round duct (see

Figure 4), or any rigid round opening, such as the neck of a diffuser.

Note: The perimeter gasket material can be removed from one end and moved to the opposite end if needed for

installation.

Figure 1

Airflow

Automatic Balancing Dampers2

Square Duct/Box Transition Installation

Grille Mount Box Installation

Greenheck model ABD-GM is designed for applications where round duct terminates at a square grille. The

ABD-GM is supplied with a factory installed grille mounting box (see Figure 7). The grille can also be factory

supplied. Factory supplied grilles are shipped loose. Screws can be used to secure the grille mount box into place.

Installation into square duct requires a square to round transition. Greenheck model ABD-T is supplied with a factory

square to round transition. The size of the transition can be speciﬁed at the time it is ordered. (see Figure 5).

The square to round transition can be inserted into a square duct or plenum box (see Figure 6). Sheet metal screws

can then be used to secure the ABD-T into place.

Note: If the valve is installed in a continuous duct run, an access panel or door should be provided for periodic

cleaning, inspection, or adjustment.

Figure 6Figure 5

Figure 7

4 in. model with 6 in. x 6 in.

transition shown

Automatic Balancing Dampers 3

Damper Maintenance

Dampers do not typically require maintenance as long as they are kept dry and clean. If cleaning is necessary, wash

with water. No solvents should be used in cleaning, as they could damage the valve or gasket. In addition, ABD

dampers incorporate Steri-BalanceTM into all plastic components. Steri-BalanceTM is a non-caustic material that

inhibits antimicrobial growth.

Operation - CFM Set-Point Adjustments

The design of the Greenheck ABD allows for easy ﬁeld adjustment to over 20 cfm set-points.The set-point range for

the 4 and 5 inch damper is 25 to 125 cfm. For the 6 inch damper, the range is 55 to 250 cfm.

Adjusting the damper to the target cfm set-points can be done without tools. Simply slide the set-point indicator on

the face of the damper to the desired point.

The damper should only be adjusted by means of the adjustment arm. Do not operate the damper via the blade.

Adjusting or operating the damper by the blade can change the tension of the stainless steel spring and could

change the operating range of the damper.

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: 715.359.6171 • Fax: 715.355.2399 • Parts: 800.355.5354 • E-mail: [email protected] • Website: www.greenheck.com

Our Commitment

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