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For specific duct types, follow instructions below:
A. Round Metal Duct Work
1. Crimp end of branch duct.
2. Slip end of zone damper over end of duct work. Use
self-tapping sheet metal screw to secure. (See Fig. 2.)
3. Properly seal joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with actuator.
4. Insulate damper using 1-1/2 in. to 2-in. insulation. (Check
your local codes.)
NOTE: All zone dampers and duct work must be properly
supported according to local codes or SMACNA standards.
B. Rectangular Metal Duct Work
1. Make connections using S-lock and drives. (See Fig. 2.)
2. Properly seal joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with actuator.
MOUNTING
HUB
QUICK BLADE
OPN COM CLS
RELEASE
BUTTON (RED)
Fig. 1—Damper 24-vac Connections
SUPPLY
AIR DUCT
Fig. 2—Rectangular Metal Duct Work
3. Insulate damper using 1-1/2 in. to 2-in. insulation. (Check
your local codes.) (See Fig. 3.)
C. Round Flexible Duct Work
1. Slip 1 end of flexible duct work over 1 end of zone damper.
(See Fig. 4.)
ACTUATOR
HOUSING
MOUNTING
PLATE
FIELD
INSTALLED
POWER WIRING
C02083
S-LOCK
DRIVE
ZONE
DAMPER
A92478
1 2
1 / " TO 2"
INSULATION
Fig. 3—Insulated Rectangular Metal Duct Work
FLEXIBLE
DUCT
Fig 4—Round Flexible Duct Work
2. Secure flexible duct to zone damper using SMACNA or
other approved method.
3. Properly seal joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with actuator.
4. Insulate damper using 1-1/2 in. to 2-in. insulation. (Check
your local codes.) (See Fig. 5.)
NOTE: All zone dampers and duct work must be properly
supported according to local codes or SMACNA standards.
Fig. 5—Insulated Round Duct Work
D. Rectangular Fibrous Glass Duct Work
1. Insert 1 end of zone damper into 1 end of fibrous glass duct
work approximately 2 to 3 in. (See Fig. 6.)
2. Screw field-supplied screws and tabs into zone damper.
3. Properly seal joint using duct tape, mastic, or other ap-
proved method. Do not allow mastic to come in contact
with actuator.
4. Insulate damper using 1-1/2 in. to 2-in. insulation. (Check
your local codes.) (See Fig. 7.)
V. INSTALL BAROMETRIC BYPASS DAMPER
NOTE: The barometric bypass damper is a critical part of Bryant
3-Zone System for controlling noise at minimum airflow. A
barometric bypass should be installed unless the duct work and
indoor unit have been sized for use without a bypass.
—3—
A95131
ZONE
DAMPER
A95132
/ " STEEL STRAP
1 2
A95133
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