Greenheck IAQ-42 Installation Manual

Part number 467954

IAQ-42

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.

Airflow

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 (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 IAQ-42 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

Multi section dampers

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

Spreader Bar

Attachments

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.

Installation- Failure to follow instructions will void all warranties

1. Ensure the IAQ-42 damper is mounted with airflow straightener or louver mounted 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. If no holes are present in frame, drill 1/4 inch (6mm) diameter holes at 6 inch (52mm) centers and fasten
frames together with 1/4 inch (6mm) #20 (.03mm) bolts and nuts.

4. 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.

5. If damper actuator is to be mounted out of the airstream, the extension pin should extend approximately
6 inches (152mm) beyond the frame.

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Installation - cont...

6. 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.

A

C

E

B

Do not twist

D

AF = BE
AB = CD

F

or bow. Mount
damper plumb
in the opening.

7. 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.

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.

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

SAFETY DANGER !

Connect electrical connection to terminal strip as shown on drawing (see figure 1).

120 VAC ONLY

L1 L2

1-ACTUATOR HOT (ACT 1)

2-ACTUATOR NEUTRAL (ACT 2)

3-ACTUATOR POSITION COMMAND (ACT 3)

4-FLOW OUTPUT (+)

5-FLOW OUTPUT (-)

6-FLOW/POSITION SETPOINT(+)

7-FLOW/POSITION SETPOINT (-)

8-ACTUATOR POSITION FEEDBACK (ACT5)

9-THERMISTOR (-)

10-THERMISTOR (+)

11-CONTACT CLOSURE

12-CONTACT CLOSURE

HIGH PRESSURE (UP STREAM)

LOW PRESSURE
(DOWN STREAM)

Fig.1 wiring diagram

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