Carnes FAAA User Manual
Control Dampers
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Model FDCB (Opposed Blade)
FDHB (Parallel Blade)
Aluminum Low Leakage Control Dampers
t Standard Specifications
Frame: .081 extruded aluminum
Blades: .125 extruded aluminum
Bearings: bronze oilite
Linkage: *concealed in frame
Axles: 1/2ӯ cast zinc with thrust bushing
Control Shaft: 1/2” x 6” long outboard support
bearing supplied with all single section dampers for
field mounted actuators. Factory-installed jackshaft
supplied with all multi-section dampers.
Damper
Width x Height
1 in. w.g. Class 4 in. w.g. Class 8 in. w.g. Class
12” x 12” 3.6 (Class 1A) 7.6 (Class 1A) 10.3 (Class 1A)
36” x 36” 0.5 (Class 1A) 5.6 (Class 1A) 20.8 (Class 1A)
Leakage Performance
Leakage - L/s/m² (ft³/min/ft²)
Note: At 1” w.g. 12” x 12” damper leaks 3.6 cfm per square foot.
Note: At 1” w.g. 36” x 36” damper leaks 0.5 cfm per square foot.
Note: Blade and jamb seals are required to meet the leakage
rates shown above.
4-1/2”
Undersized 1/4”
t Standard Specifications
Frame: roll formed galvanized steel
Blades: 4” - 7” wide, 16 gauge galvanized steel
Bearings: nylon
Linkage: concealed in frame
Axles: 3/8” square plated steel
Control Shaft: Ø1/2” x 4-1/2” long shaft supplied
with all single section dampers for field mounted
actuators. Factory-installed jackshaft supplied with all
multiple section dampers.
W
H
5”
Optional
Stainless steel
jamb seals
Vinyl blade seals
Model FDNB (Opposed Blade)
FDQB (Parallel Blade)
Galvanized 3V Blade Control Dampers
Damper
Width x
Height
1 in. w.g.
Class
4 in. w.g.
Class
8 in. w.g.
Class
*Torque
(per sq. ft.)
36” x 36” Class III Class III Class III 5.55 lbs-in
Leakage Performance
*Torque applied to hold damper in closed position.
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Control Dampers
t Standard Specifications
Frame: .081 extruded aluminum (6063-T5)
Blades: hollow airfoil with .375” thick end nose
(6063-T5) extruded aluminum
Extended Shaft: 1/2” diameter
Bearing: bronze oilite
Linkage: concealed in frame
Pivot Axels: zinc with thrust bushings
Blade Seals: removable EPDM (250°F)
Jamb Seals: stainless steel (compression)
Options
- Insulated Blades (Foam Filled Blades)
Damper
Width x Height
1 in. w.g. Class 4 in. w.g. Class
12” x 12” Class I Class II
24” x 24” Class I Class I
36” x 36” Class I Class I
12” x 48” Class III Class III
48” x 12” Class I Class I
60” x 36” Class II Class II
Leakage Performance (Forward Flow)
Model FAAA (Opposed Blade)
FABA (Parallel Blade)
Aluminum Airfoil Blade Control Dampers
*H
4.5”
*Undersized 1/4”
*W
Model FACA (Opposed Blade)
FADA (Parallel Blade)
Galvanized Airfoil Blade Control Dampers
t Standard Specifications
Frame: rollformed galvanized steel
Blades: 5”-7” wide galvanized steel airfoil (double
skin construction of 14 ga equivalent thickness)
Extended Shaft: 1/2” diameter
Bearing: nylon
Linkage: concealed in frame
Axels: zinc plated
Blade Seals: PVC (175°F)
Jamb Seals: stainless steel (compression)
Options
- Insulated Blades (1/2” Fiberglass)
*H
5”
*Undersized 1/4”
Standard
*W
Damper
Width x Height
1 in. w.g. Class 4 in. w.g. Class 8 in. w.g. Class
12” x 12” Class I Class II Class II
24” x 24” Class I Class I Class I
36” x 36” Class II Class II Class II
12” x 48” Class III Class III Class II
48” x 12” Class I Class I Class I
60” x 36” Class II Class II Class II
Leakage Performance (Forward Flow)
Minimum Size: 8”w x 8”h
Maximum Size: 60”w x 72”h (single section)
Maximum Multi-Section: Unlimited
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