Carnes FDCB User Manual

Volume Control Dampers

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Volume Control Dampers

Volume Control Dampers - Galvanized

Model: FDNB Opposed Blade Channel Frame, FDQB Parallel Blade Channel Frame,
FDPB Opposed Blade Flanged Frame, FDRB Parallel Blade Flanged Frame

Model FDNB and FDQB

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.
Maximum Panel Size: 48”w x 60”h (single section)
Maximum multi-section: unlimited
Minimum Panel Size: 6”w x 6”h
9”h and under - single blade

Options

• Vinyl Blade Seals

• Compression Jamb Seals (stainless steel)

• Header Plates (end flange)

• Hand Quadrant

• Factory Installed Actuators

• Position Switch

• Face and By-pass Damper

• Chain Operator

• Single Flange

• Double Flange

• Bolt Holes in Flange

• Stainless Steel Bushings

• Heresite Coated (air dry)

• Epoxy Coated (powder coated)

• Stand Off Bracket, 2”

W

H

5”

Optional

Stainless steel
jamb seals

Vinyl blade seals

12” wide -3500 FPM
24” -2800
36” -2300
48” -2100

FPM Table

Volume Control Dampers

Volume Control Dampers

F-76 www.carnes.com

Galvanized Volume Control Dampers

Model: FDNB and FDQB

Ratings shown are based on tests made in accordance with AMCA standard 500.

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

Imperial Units (Forward Flow)

*Torque applied to hold damper in closed position.

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

Imperial Units (Back Flow)

*Torque applied to hold damper in closed position.

Damper

Width x Height

(mm)

250 Pa Class 1 kPa Class 2 kPa Class *Torque

915 x 915 Class III Class III Class III 6,394 grams-cm

Standard International Units (Forward Flow)

*Torque applied to hold damper in closed position.

Damper

Width x Height

(mm)

250 Pa Class 1 kPa Class 2 kPa Class *Torque

915 x 915 Class III Class III Class III 6,394 grams-cm

Standard International Units (Back Flow)

*Torque applied to hold damper in closed position.

Air leakage is based on operation
between 50°F to 104°F. All data
corrected to represent air density
of 0.075 lbs/ft.

3

Air leakage is based on operation
between 10°C to 40°C. All data
corrected to represent air density
of 1.201 kg/m.

3

PL-1

PL-7 PL-X

PL-Y

M

AIRFLOW

AIRFLOW

Figure 5.4 - Test Device Setup with Outlet Chamber

Note: For pressure drop testing an outlet

chamber shall have a cross sectional
area at least fifteen times the free
area of the device being tested.

P

s7

W + H

75mm ± 6mm

(3 in. ± .025 in.)

Device

being

tested

M/2 min.

M/2 min.

Figure 6.3 - Airflow Rate Measurement Setup -

Multiple Nozzle Chamber on Fan Inlet

M

M/2 min.

P

s7ΔPn

PL-A

PL-B PL-5 PL-6

Any

angle

Variable
exhaust

system

Settling means

M/2 min.

38mm ± 6mm
(1.5 in. ± .025 in.)

38mm ± 6mm
(1.5 in. ± .025 in.)

t

d5

Leakage, ft.3/min/ft.

2

Required Rating Extended Ranges (optional)

Class

Pressure

1” 4” 8” 12”

I 4 8 11 14

II 10 20 28 35

III 40 80 112 140

All data corrected to represent standard air at a density of 0.075 lbs/ft.

3

Leakage, L/s/m.

3

Required Rating Extended Ranges (optional)

Class

Pressure

0.25 kPa 1.0 kPa 2.0 kPa 3.0 kPa

I 20.3 40.6 55.9 71.1

II 50.8 102 142 178

III 203 406 569 711

D6= Throat dia. of largest nozzle

2.5 D

6

min.

Volume Control Dampers

www.carnes.com F-77

Volume Control Dampers

PL-1

PL-2

PL-4

PL-Z

AIRFLOW

AIRFLOW

Figure 5.3 - Test Device Setup with Inlet and Outlet Ducts

P

s9

D ± 0.02D

Device being tested

6D min.

Figure 6.5 - Airflow Rate Measurement Setup -

Multiple Nozzle Chamber on Fan Inlet

M

M/5 min.

P

s5ΔPn

PL-A

PL-B

PL-5

PL-6

Variable
exhaust

system

Settling means

M/2 min.

38mm ± 6mm
(1.5 in. ± .025 in.)

38mm ± 6mm
(1.5 in. ± .025 in.)

t

d5

Galvanized Volume Control Dampers

Model: FDNB and FDQB

PL-9PL-YPL-X

P

s4

Inlet cone required
if attached to plenum

10D min.

D ± 0.02D

D

6

= Throat dia. of

largest nozzle

Settling means

2.5 D

6

min.

Pressure Drop

Static Pressure Drop (inches w.g.)

FREE AREA VELOCITY (FT/MIN)

Standard air - .075 lbs per cu ft
Ratings do not include the effects of a wire birdscreen
Test based on a 48” x 48” test size, 15 min test duration

Free Area Velocity

ft/min (m/s)

Pressure Drop

in w.g. (Pa)

1000 (5.08) 0.055
1500 (7.62) 0.100

2000 (10.16) 0.175

36 x 36

From supply system and
flow measuring section

Volume Control Dampers

Volume Control Dampers

F-78 www.carnes.com

Low Leakage Volume Control Dampers - Aluminum

Model: FDCB Opposed Blade Channel Frame, FDHB Parallel Blade Channel Frame,
FDSB Opposed Blade Flanged Frame, FDTB Parallel Blade Flanged Frame

Model FDCB and FDHB

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.
Maximum Size: 52”w x 72”h (single section)
Multi-section unlimited.
Minimum Size: 5”w x 4”h. 8” and under single blade.

*Over 36” wide or 48” high, blade linkage will be modified.

Options

• .125 Extruded Aluminum Frame (box frame)

• 1-1/2” .125 Extruded Aluminum Flanged Frame

• Blade Seals PVC (175°F)

• Blade Seals Silicone (400°F & #304 stainless steel bushing)

• Compression Jamb Seals (stainless steel)

• Hand Quadrant

• Factory Installed Pneumatic or Electric Actuators

• Position Switch

• Face and By-pass Damper

• Chain Operator

• Heresite Coated (air dry)

• Epoxy Coated (powder coated at 415°)

• Explosion-proof Enclosure for Actuator

Size Tested: 36”w x 36”h and 12”w x 12”h

12” wide -2600 FPM
24” -2200
36” -2000
48” -1700
52” -1600

FPM Table

4-1/2”

6-1/4”

Undersized 1/4”

Jackshafting provided over 52” wide

Pressure - up to 3” w.g. ­See pressure limit table

0 2 3

48”

36”

24”

12”

Maximum Damper

Section Width

Maximum Design Total Static
Pressure Inches Water Gage

Pressure Limitations

Volume Control Dampers

www.carnes.com F-79

Volume Control Dampers

Aluminum Low Leakage Volume Control Dampers

Model: FDCB and FDHB

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.

AMCA Standards

Leakage Classification per AMCA publication 511-99.

Leakage,

ft³/min/ft²

Required Rating Extended Ranges (optional)

Class

0.25 kPa (1”) 1.0 kPa (4”) 2.0 kPa (8”) 3.0 kPa (12”)

1A 15.2 (3) 40.6 (8) 55.9 (11) 71.1 (14)

1 20.3 (3) 40.6 (8) 55.9 (11) 71.1 (14)
2 50.8 (10) 102 (20) 142 (28) 178 (35)
3 203 (40) 406 (80) 569 (112) 711 (140)

Pressure

Ratings shown are based on tests made in accordance with AMCA standard 500.

Free Area Velocity

ft/min (m/s)

Pressure drop

w.g. (Pa)

CFM

407 (2.0) .040 (1.24) 407

820 (4.1) .150 (4.97) 820
1234 (6.3) .340 (12.42) 1234
1641 (8.3) .610 (22.35) 1641

2057 (10.4) .950 (34.77) 2057

Pressure Drop

Static pressure drop (inches w.g.)

Free Area Velocity (ft/min)

Based on standard air - .075 lbs per cubic foot
FDCB, FDHB size tested: 36 x 36

Free Area Velocity

ft/min (m/s)

Pressure drop

w.g. (Pa)

CFM

392 (1.99) .005 (1.24) 3528

789 (4.01) .02 (4.97) 7100
1208 (6.14) .05 (12.42) 10,877
1598 (8.12) .09 (22.35) 14,382

2006 (10.19) .14 (34.77) 18,061

36” x 36” (914mm x 914mm)

12” x 12” (305mm x 305mm)

PL-2

AIRFLOW

Figure 5.5 - Test Device Setup with Inlet Chamber

P

s6

Device

being

tested

M/2 min.

PL-8

PL-Y

PL-X

PL-2

M/2 min.

W x H

W x H

PL-1

PL-2

PL-4

PL-Z

AIRFLOW

Figure 5.3 - Test Device Setup with Inlet and Outlet Ducts

P

s9

D ± 0.02D

Device being tested

6D min.

M

75mm ± 6mm
(3 in. ± .025 in.)

t

d5

PL-9

PL-YPL-X

P

s4

Inlet cone required
if attached to plenum

10D min.

D ± 0.02D

From supply system and flow measuring section

Backdraft Dampers & Motorized Dampers

SECTION 8

F-80 www.carnes.com

Backdraft Dampers & Motorized Dampers

Horizontal or Vertical Exhaust Dampers; For All Models of Louvers and Penthouses
Model: JDHAA Automatic/Gravity, JDHAM Motorized, JDHAC Chain Operated

t Standard Specifications

Frame: .036” (1.6mm) 6063T6 aluminum
Blades: 24 gauge aluminum with double stiffening breaks
Finish: mill aluminum
Bearings: self lubricating nylon
Blade Pivots: 3/16” (5mm) plated steel
Linkage: galvanized steel; double linkage for width exceeding

20” (508mm)

Seals: felt between blades and polyurethane sponge at sill
Maximum Panel Size: 50”w x 72”h (1270mm x 1829mm)
Maximum Velocity: 1500 FPM (8 M/S)
Maximum Differential Pressure: 1” WG (250 N/M2)
Maximum Temperature: Damper 250°F (95°C); Motor 130°F (55°C)

Options

• POSC (Power Open-Spring Close)

• Standard Motor Voltage is 115-230/1/60

• Optional 24 VAC or 575 VAC

• Optional Transformers

• Optional Finishes

120V 240V

Idle Speed (RPM) 1.8 1.8

Idle Amps 0.244 0.137

Stall Amps 0.261 0.146

Face View

Model JDHAA Automatic

Model JDHAC Chain Operated

Model JDHAM Motor Operated

Spring Assist is field installed and is
recommended for face
velocity less than 600 FPM.

CAUTION: Motor kits are not suitable for
use in atmospheres or airflows containing
explosive or flammable products.

Actual Size = Nominal Size -1/4” (6mm)

Motor kits ship loose for field installation