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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
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.
®
1
⁄
4
C
E
Do not twist or
bow. Mount damper
plumb in the
opening.
AF = BE
D
AB = CD
F
Damper Sleeve
Pressure Transducer
Plumb the high pressure parts together
Plumb the low pressure parts together
Damper Sleeve
AMD & AMS Series
3
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