Honeywell TROL-A-TEMP AOBD Series User Manual

AUTOMATIC OPPOSED BLADE DAMPERS (AOBD)
68-0246 4
INSTALLATION
When Installing this Product...
1.
Read these instructions carefull
y
. Failure to follow these
instructions can dama
g
e the product or cause a hazard-
ous condition.
2.
Check the ratin
g
s
g
iven in the instructions and on the
product to make sure the product is suitable for
y
our
application.
3.
Installer must be a trained, experienced service techni-
cian.
4.
After completin
g
installation, use these instructions to
check out the product operation.
Planning the Installation
Selecting a Location
Select a location for the zone damper that is at least three feet
from the HVAC unit plenum in the air duct takeoff to the
respective zone. IODB dampers can be installed near air
re
g
isters.
The AOBD is a complete factor
y
-assembled motorized
damper. It comes complete and read
y
for installation.
Selecting Damper Size
To ensure correct operation, be sure to select the correct
damper size for the air duct:
IMPORTANT
Be aware that damper sizes are built slightly smaller
than the listed dimensional sizes.
• If the damper is forced into an undersized air duct,
the excess pressure can jam the damper blades and
cause improper operation.
• When a small percentage of continuous flow is
desired in a zone, even when the damper blades are
closed, install a damper that is shorter than the air
duct width. Refer to Fig. 4.
Fig. 4. Installing shorter dampers.
Selecting Location with Humidifier Installed
• Recommended humidifiers are the evaporative t
y
pe.
IMPORTANT
Excessive lime or mineral deposits can accumulate
on damper blades and cause improper operation
when spray or atomizing type humidifiers are
installed in the furnace plenum or air supply duct with
the zone dampers.
• Non-recommended humidifiers are the spray or
atomizer type that is installed in the furnace plenum
or air supply duct.
Installing the Dampers
IMPORTANT
— Install AOBD, AOBD-BM and IOBD dampers into a
squared air duct.
— Use multiple dampers and damper mounting tracks.
to install applications wider than 30 in. See Fig. 5.
— Do not force dampers into undersized air ducts.
Excess pressure can damage damper blades.
— Do not weld dampers to the air ducts or damper
mounting tracks.
— In multiple damper applications, do not weld damp-
ers together.
— When securing dampers with sheet metal screws,
refer to Installation Instructions. Incorrect use of
sheet metal screws can damage the damper blades
and the electric actuator.
— Be sure high limit setting is 200° F (93°C) or lower.
Higher settings can damage the electric actuator.
IMPORTANT
When installing dampers in vertical air ducts, always
secure the front and back of the damper to the air
duct. See Fig. 5.
Fig. 5. Securing back of damper to air duct.
1
1 DAMPER IS SLIGHTLY SMALLER THAN THE AIR DUCT SIZE. THIS
GAP ALLOWS A CONSTANT FLOW OF CONDITIONED AIR INTO
A ZONE WHEN DAMPER BLADES ARE CLOSED.
M513
M514
1
SECURE BACK OF DAMPER TO AIR DUCT USING
TWO 1/4 IN. (6 MM) SHEET METAL SCREWS.
1

Honeywell TROL-A-TEMP AOBD Series Specifications

General

Brand	Honeywell
Model	TROL-A-TEMP AOBD Series
Category	Stud Sensor
Language	English