Greenheck AMD-xx-TD Series Dampers (478799 IOM). - Manual (Page 2)

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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, actuator, and transmitter must be kept
clean, dry and protected from dirt, dust and other
Spreader Bar
Attachments
Multi section dampers
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
Do not twist
or bow. Mount
damper plumb
in the opening.
A B
AF = BE
AB = CD
C D
E F
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 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.
Pre-Installation Guidelines
cont...