OVERVIEW | Spiral Duct Grilles (RD_M)
Spiral Duct Grilles The Carnes RD series of spiral duct grilles and diffusers offer a clean, unobtrusive look w...
Spiral Duct Grilles The Carnes RD series of spiral duct grilles and diffusers offer a clean, unobtrusive look with easy installation. These units mount flush to the duct eliminating any need for stand offs. The extruded aluminum frames are welded on the corners and the end caps are curved to match the spiral duct radius. These are available in single deflection, double deflection, perforated or a linear slot diffuser configuration. All Carnes RD models have the following features: • Radiused end caps for flush mounting. • Extruded aluminum construction. • Countersunk mounting screws standard. • All units are available with white or natural anodized finish. • Air scoop dampers are available on all models. • Thick foam gasketing provided as standard. • 3/4” blade spacing on single and double deflection models.
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A-481
Specialty Products
(RD_M)
OVERVIEW | Spiral Duct Grille (RD_M) Application The Carnes Model RD is a curved grille designed to fit flush to the spiral duct without any stand offs necessary. Available models include single deflection, double deflection, perforated and linear slot. These grilles offer a clean, subtle look that performs well and is easy to install.
Standard Features
Specialty Products
• Single and deflections models feature teardrop blades on 3/4” spacing. Vertical front blades are standard. • All models have thick foam gasketing on the back of the frame. • Countersunk screws used for mounting. • All blades are individually adjustable. • All mitered corners are welded. • White or anodized colors are available as standard.
Optional Features • Air scoop dampers available on all models. • Colors other than standard are available upon request. • Sizes other than standard are available upon request.
Model Numbering System Model Number 1 2 3
R
D
S
Design Series Style 4 5
M
Width 6 7
Height 8
9
Duct Diameter 10 11
Finish 12 13
OPTIONS 14
H
R - Register & Grille D - Spiral Duct Grille
SIZE 06 - 6” Thru 11 - Bright 03 - 3” A - Air 10 -10” Min 04 - 4” 36 - 36” White Deflector 48 -48” Max 06 - 6” even 51 - Natural sizes 08 - 8” Annodize only 10 - 10” A -1/2” Slot Width 12 - 12” B -3/4” Slot Width H -Horizontal (Blade Parallel to width) C -1” Slot Width S -Single Deflection V -Vertical (Blade Parallel to height) D -Double Deflection N -N/A (Perforated) P -Perforated Face 1 -1 Slot 2 -2 Slot 3 -3 Slot 4 -4 Slot
Correction Factors for Grille Performance • Total Pressure (Pt) - Use table data unchanged. • Throw - Use table data unchanged for 0° setting. Multiply the table data by the following factor for different blade angle settings.
Blade Angle Setting Factor
22-1/2°
45°
0.89
0.60
• Sound Level Use table data unchanged for 0° setting. Add the following to arrive at NC values for different blade angle settings. Duct Velocity (fpm) 45° Blade Setting
300
400
500
600
700
800
900
1000
1200
6
6
6
6
5
5
5
5
5
Correction Factors for Grilles with Air Scoop Damper • Total Pressure - Vse
A-482
• Total Pressure - Multiply cataloged data by 0.5
• All other data remains the same.
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DIMENSIONAL DATA | Spiral Duct Grille (RDSM) Model RDSM
1 Standard screws are #6 x 1 1/4” (32) phillips countersunk screws. 2. Standard color is Carnes bright white. Other colors are available on request. 3. Blades can be aligned either horizontally or vertically, and are individually adjustable. 4. Standard sizing is in even inch increments in both dimensions. 5. The standard operator on the damper takes a medium size screwdriver. 6. Metric dimensions are given in millimeters. 7. Optional air scoop damper available. 8. Thick foam gasket standard. 9. Blades are individually adjustable. 10. Larger sizes available upon request. 11. Gasketing on frame is standard.
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Dimensions Listed In Inches Height
3
4
6
8
10
12
Duct Diameter (Min/Max)
6/ 36
8/ 36
10 / 36
12 / 36
14 / 36
16 / 36
14 / 48
16 / 48
18 / 48
Width (Min/Max)
10 / 48
A-483
Specialty Products
-1/2” (13)
-1-1/4” (32)
DIMENSIONAL DATA | Spiral Duct Grille (RDPM) Model RDPM
1. Standard screws are #6 x 1 1/4” (32) phillips countersunk screws. 2. Standard color is Carnes bright white. Other colors are available on request. 3. Perforated material has a 51% free area. 4. Standard sizing is in even inch increments in both dimensions. 5. The standard operator on the damper takes a medium size screwdriver. 6. Metric dimensions are given in millimeters. 7. Optional air scoop damper available. 8. Thick foam gasket standard. 9. Larger sizes available upon request. 10. Gasketing on frame is standard.
A-484
Dimensions Listed In Inches Height
3
4
6
8
10
12
Duct Diameter (Min/Max)
6/ 36
8/ 36
10 / 36
12 / 36
14 / 36
16 / 36
14 / 48
16 / 48
18 / 48
Width (Min/Max)
10 / 48
www.carnes.com
DIMENSIONAL DATA | Spiral Duct Grille (RDDM) Model RDDM
1. Standard screws are #6 x 1 1/4” (32) phillips countersunk screws. 2. Standard color is Carnes bright white. Other colors are available on request. 3. Blades can be aligned either horizontally or vertically, and are individually adjustable. 4. Standard sizing is in even inch increments in both dimensions. 5. The standard operator on the damper takes a medium size screwdriver. 6. Metric dimensions are given in millimeters. 7. Optional air scoop damper available. 8. Thick foam gasket standard. 9. Blades are individually adjustable. 10. Larger sizes available upon request. 11. Gasketing on frame is standard.
www.carnes.com
Dimensions Listed In Inches Height
3
4
6
8
10
12
Duct Diameter (Min/Max)
6/ 36
8/ 36
10 / 36
12 / 36
14 / 36
16 / 36
14 / 48
16 / 48
18 / 48
Width (Min/Max)
10 / 48
A-485
Specialty Products
-1/2” (13)
-1-1/4” (32)
PERFORMANCE DATA | Spiral Duct Grille (RDSM, RDDM)
Notes on Performance Data • Performance data is based on tests conducted in accordance with ANSI/ASHRAE Standard 70-1991. • Actual performance in the field may vary. • Tests were conducted in isothermal conditions. • Sound levels are based on a room absorption of 10 db re 10-12 watts.
A-486
Notes on Units of Measure Used • Air flow is given in cubic feet per minute (CFM). • Static Pressure is given in inches of water (w.g.). • Sound data is given in NC. • Throws are given in feet to terminal velocity of 150, 100 and 50 fpm, respectively.
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Core Area
26 20 18 12
x x x x
4 5 6 8
36 x 3 28 x 4 18 x 6 30 x 4 24 x 5 20 x 6 14 x 8 12 x 10 32 x 4 16 x 8 36 x 4 24 x 6 18 x 8 16 x 10 12 x 12 36 x 5 30 x 6 22 x 8 18 x 10 14 x 12 36 x 6 28 x 8 25 x 9 22 x 10 18 x 12 30 x 8 24 x 10
Notes on Performance Data • Performance data is based on tests conducted in accordance with ANSI/ASHRAE Standard 70-1991. • Actual performance in the field may vary. • Tests were conducted in isothermal conditions. • Sound levels are based on a room absorption of 10 db re 10-12 watts.
Notes on Units of Measure Used • Air flow is given in cubic feet per minute (CFM). • Static Pressure is given in inches of water (w.g.). • Sound data is given in NC. • Throws are given in feet to terminal velocity of 150, 100 and 50 fpm, respectively.
A-487
Specialty Products
PERFORMANCE DATA | Spiral Duct Grille (RDSM, RDDM)