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Product Bulletin 135-D Linear Bar & Floor Grilles

Pleasant . . Serene. .YOU & DASCO.. .

www.dasco.com.kw

Partners for good health

Since 1964

Introduction

DASCO Linear Bar Grilles and Registers covers a wide range

for supply and return air distribution of HVAC systems and

are suitable for ceiling, floor, sill and sidewall applications.

They are selected for their pleasing continuous, l ine

architectural appearance and are designed for fan tops,

grilles of swimming pools, ventilation outlets and many other

applications.

INTRODUCTION

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Linear Bar Grilles

DASCO Linear Bar Grilles and Registers DLB (G,R) covers a wide range for supply and return air distribution of HVAC systems and are suitable for ceiling, floor, sill and sidewall applications. They are selected for their pleasing continuous line architectural appearance and are designed for fan tops, grilles of swimming pools, ventilation outlets and many other applications.

LINEAR BAR GRILLES & REGISTERS

2

GENERAL

Bar Grille DLBG - 30˚ - 2W

Mitered Corner (90˚ angle)

Mitered Corner (135˚ angle)

DASCO Linear Bar Grilles & Registers are multiparallel fixed bar type in continuous modular section up to 5 meters long to form linear type grilles. They are available in one way airflow pattern for zero degree bar deflection and in one or two way air flow pattern for (15˚) & (30˚) bar deflection. DLB (G,R) standard widths ranges from 3”to 12” (76mm-305mm). For quiet airflow, bars are equally spaced at 12.5mm (1/2”) distance Flat frames are standard but curved frames on request can be supplied for all models. Mull ion bars across the b lades provide additional strength. Mitered corners available in various arrangements to suit different installations.

DESCRIPTION

Linear Bar Grilles

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High quality extruded aluminium sections in matt silver anodized finish. White colour in electrostatic polyester powder coating finish available as standard. Other colours as per RAL standards are also available upon request.

MATERIAL & FINISH:

PRODUCT CODE (ORDERING KEY) :

DLBX D A W LDASCO LINEAR BAR GRILLES & REGISTERS

TYPEGrilleGrille with V.C.D. (Register)

Deflection AngleZero degree deflectionZero degree deflection (Special blade)15 degree deflection30 degree deflection

Air patternOne-way deflectionTwo-way deflection

Width of neck (inch or mm)

Length (inch or mm)

XGR

DOOy

1530

A1W2W

W

L

:::

:::

::

:::

::

Linear Bar Grilles

4

Complete dimensional details for DASCO Linear Bar Grille DLBG-15˚-1W.

AREA FACTORSBelow is the area factor per foot for DASCO Linear Bar Grilles (Ak)

NoteSizes other than listed are also available upon request.

LISTED WIDTHS:

Table No (1) – Listed Widths

Table No (2) – Area Factor (AK)

NoteFor use with alnor velometer with Tip No.2220 or 2220A

CFMAkLVk

====

Ak x L x Vk, whereArea Factor in Ft2/Ft RunActive Length of Linear Bar Grille in feet.Average velocity as measured by Alnor Velometer with Tip No.2220 or 2220A.

LISTED WIDTH + 58 mm

12.5 mm(1/2”) 32 mm

51.5

mm

LISTED WIDTH

3 mm(1/8”)

LISTED + 58 mm

12.5mm(1/2”)32 mm

6mm

51.5

mm

3 mm(1/8”)


32 mm12.5mm(1/2”)15˚

51.5

mm

3 mm(1/8”)

LISTED WIDTH


32 mm12.5mm(1/2”)30˚

51.5

mm

3 mm(1/8”)

LISTED WIDTH


32 mm12.5mm(1/2”)15˚

51.5

mm 3 mm(1/8”)

LISTED WIDTH


32 mm12.5mm(1/2”)

30˚

51.5

mm

3 mm(1/8”)

LISTED WIDTH

Dimensional Data

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DLBG – 0˚DASCO Linear Bar Grille with fixed bar 0 ̊deflection

DIMENSIONAL DATA (Linear Bar Grilles)

DLBG – 0˚YDASCO Linear Bar Grille with fixed bar (special blade)

0 ̊deflection

DLBG –15˚WDASCO Linear Bar Grille with fixed bar 15 ̊one-way

deflection

DLBG – 15˚-2WDASCO Linear Bar Grille with fixed bar 15˚ two-way

deflection

DLBG –30 -̊1WDASCO Linear Bar Grille with fixed bar 30 ̊one-way

deflection

DLBG – 30˚-2WDASCO Linear Bar Grille with fixed bar 30˚ two-way

deflection


12.5 mm(1/2”) 32 mm

51.5

mm

LISTED WIDTH

3 mm(1/8”)

LISTED + 58 mm

12.5mm(1/2”)32 mm

6mm

51.5

mm

3 mm(1/8”)


32 mm12.5mm(1/2”)15˚

51.5

mm

3 mm(1/8”)

LISTED WIDTH


32 mm12.5mm(1/2”)30˚

51.5

mm

3 mm(1/8”)

LISTED WIDTH


32 mm12.5mm(1/2”)15˚

51.5

mm 3 mm(1/8”)

LISTED WIDTH


32 mm12.5mm(1/2”)

30˚

51.5

mm

3 mm(1/8”)

LISTED WIDTH

Dimensional Data

DIMENSIONAL DATA (Linear Bar Registers)

6

DLBR – 0˚DASCO Linear Bar Register with fixed bar 0˚

deflection with opposed blade lever operated damper

DLBR – 0˚YDASCO Linear Bar Register with fixed bar (special blade) 0 ̊deflection with opposed blade lever operated damper

DLBR-15 -̊1WDASCO Linear Bar Register with fixed bar 15 ̊one waydeflection with opposed blade lever operated damper

DLBR-15 -̊2WDASCO Linear Bar Register with fixed bar 15 ̊two-waydeflection with opposed blade lever operated damper

DLBR-30 -̊1WDASCO Linear Bar Register with fixed bar 30 ̊one waydeflection with opposed blade lever operated damper

DLBR-30 -̊2WDASCO Linear Bar Register with fixed bar 30 ̊two-waydeflection with opposed blade lever operated damper

Accessories

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A complete variety of accessories and options are available for DLB (G,R) series liner Bar Grilles and Registers.

STANDARD 90˚ HORIZONTAL MITERED CORNER SECTIONSuitable for floor, sill or ceiling application.This standard corner section is available in 0˚, 15º and 30º deflection settings with angle of 90º. When specifying a corner section with 15º or 30º deflection settings, it is important to specify the direction of its throw either towards the insideor outside of the corner. Corner sections are not provided with dampers.

DIFFERENT SETTINGS OF MITERED CORNERS

ACCESSORIES

1. Opposed blade Volume Control Damper for supply grilles.2. Equalized grid.3. Lining strips for continuous sections.4. Mitered corner sections.(Available in both horizontal and vertical settings )

Opposed Blade volume control damper.

1.

SPECIAL HORIZONTAL MITERED CORNER SECTIONSuitable for floor, sill or ceiling applications. This special corner section includes an angle greater than 90º and less than 180º and is available in 0º, 15º and 30º deflection settings. When specifying a corner section with a 15º or 30º deflection settings, it is important to specify the direction of its throw either towards the inside or outside of the corner . Corner sections are not provided with dampers.

2.

Accessories

8

Curved Bar Grille (Convex Shape) Curved Bar Grille (Concave Shape)

VERTICAL OUTSIDE MITERED CORNER SECTION Designed for sidewall applications at the junctions of two outside walls. This type of corner section has a standard angle of 90º and is available in 0º, 15º and 30º deflection settings . Corner sections are not provided with dampers.

3.

VERTICAL INSIDE MITERED CORNER SECTIONDesigned for sidewall applications at the junction of two inside walls. This type of corner section has a standard angle of 90º and is available in 0º, 15º and 30º deflection settings. Corner sections are not provided with dampers.

4.

Balancing and Selection

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Use an Alnor Velometer with tip No. 2220 or 2220A .For outlets less than 3” wide , position tip over center bar and take velocity readings at various points along the length of the liner bar grilles . For outlets greater than 2 1/2” wide, take velocity readings near the outer and center or near center bar at various points along the length of the linear bar grilles.Take a minimum of four equally spaced readings .Average the velocity readings .Select appropriate Ak from table (2).Determine CFM by the following equation :CFM = Ak x Active Length x Average Velocity .

HOW TO DETERMINE ( CFM ) ?

BALANCING DATA AND SELECTION PROCEDURE

1.2.

3.4.5.6.

SAMPLE PROBLEM :Determine air flow rate through a 5” wide ( 15º ) – 14 feet long supply liner bar grille. The active length is a total of 7 feet .

SOLUTION The average of 14 velocity readings taken at various points along the active length of the linear bar grille centered over the next to outer bar and middle bar is 525 fpm.From table (2) the Ak for 5» wide 15º on supply air is 0.19CFM=Ak x Active Length x Average Velocity=0.19 x 7 x 525=700 CFM

1.

2.3.

Basic Performance Data

10

DASCO Linear Bar Grille Model : DLBG - 0˚

BASIC PERFORMANCE DATA

VELOCITYNCTOTAL PRESSURETHROW

Ak

400 500 600 700 800 1000 1200 1400 1600Velocity (fpm)WIDTH

(inch)

Area Factor

( Ft2/Ft)

AKTotal Pressure(Inch W.G.) 0.009 0.014 0.021 0.028 0.036 0.056 0.08 0.11 0.146

40 50 60 70 80 100 120 140 1603” 0.1

8-14 11-17 13-20 14-22 16-26 20-33 24-39 27-42 30-45

<20 <20 <20 <20 <20 25 28 31 34

CFM/Ft

Throw (Ft)

NC

60 75 90 105 120 150 180 210 240

10-16 12-19 14-24 18-28 20-31 25-40 30-47 33-50 37-54

<20 <20 <20 <20 <20 26 29 33 36

4” 0.15CFM/Ft

Throw (Ft)

NC

76 95 114 133 152 190 228 266 304

12-20 15-25 18-29 22-35 25-39 31-48 37-56 40-60 43-64

<20 <20 <20 <20 <20 26 29 34 37

5” 0.19CFM/Ft

Throw (Ft)

NC

92 115 138 161 184 230 276 322 368

14-21 16-26 20-31 24-37 26-41 32-52 39-62 43-66 46-69

<20 <20 <20 <20 20 26 30 35 38

6” 0.23CFM/Ft

Throw (Ft)

NC

124 155 186 217 248 310 372 434 496

16-24 18-29 22-33 26-39 27-43 35-55 41-65 46-69 50-73

<20 <20 <20 <20 21 27 31 35 39

8” 0.31CFM/Ft

Throw (Ft)

NC

160 200 240 280 320 400 480 560 640

18-28 20-32 24-36 28-42 29-45 37-58 43-68 48-74 51-76

<20 <20 <20 <20 22 28 32 36 40

10” 0.4CFM/Ft

Throw (Ft)

NC

192 240 288 336 384 480 576 672 768

20-30 22-35 26-39 30-45 31-48 39-61 45-69 50-78 55-80

<20 <20 <20 20 23 29 33 37 41

12” 0.48CFM/Ft

Throw (Ft)

NC

Table No. 3 ( 0˚ Deflection Liner Bar Grille )

::::

:

Is discharge velocity measured at face of grille in FPM .Is for supply without damper and room effect of 8 dB.Is in inch W.G. for supply grille without damper .Is for 8’ long supply grille without damper , for 100 and 50 FPM terminal velocities respectively.Is area factor in Ft2/Ft Run

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DASCO Linear Bar Grille Model : DLBG - 0˚ Y


Ak

::::

:


35 44 53 62 71 88 106 124 1423” 0.97

6-11 9-14 10-16 11-18 13-22 17-27 20-31 23-35 26-39

<20 <20 <20 <20 <20 23 27 31 35

CFM/Ft

Throw (Ft)

NC

51 64 77 90 103 129 155 181 206

7-13 9-16 11-20 14-23 16-26 20-32 24-40 27-43 30-47

<20 <20 <20 <20 20 24 28 32 36

4” 0.145CFM/Ft

Throw (Ft)

NC

67 84 101 118 135 169 202 236 271

9-16 11-20 14-25 18-30 21-33 25-40 30-45 34-49 38-54

<20 <20 <20 <20 21 25 29 33 37

5” 0.186CFM/Ft

Throw (Ft)

NC

83 104 125 146 167 209 251 292 335

11-17 13-22 16-27 20-33 22-37 27-44 30-48 34-53 38-57

<20 <20 <20 20 22 26 31 34 38

6” 0.225CFM/Ft

Throw (Ft)

NC

119 149 179 208 239 298 359 419 478

13-19 14-24 18-28 22-34 24-38 27-44 31-49 35-52 39-58

<20 <20 <20 21 23 27 32 36 40

8” 0.30CFM/Ft

Throw (Ft)

NC

151 189 227 265 303 379 455 530 607

15-22 16-22 19-29 22-35 25-38 30-45 33-49 37-54 40-59

<20 <20 20 22 25 29 33 37 41

10” 0.398CFM/Ft

Throw (Ft)

NC

183 229 275 321 367 459 551 643 735

17-24 19-27 20-30 24-35 37-39 31-45 35-50 39-55 43-62

<20 <20 21 23 26 31 34 38 42

12” 0.478CFM/Ft

Throw (Ft)

NC


(inch)

Area Factor

( Ft 2/Ft)


Table No. 4 ( 0˚ Deflection Liner Bar Grille - Special Blade )

12



Ak


(inch)

Area Factor

( Ft2/Ft)


38 47 57 67 77 96 115 134 1533” 0.095

8-13 11-16 12-18 13-20 15-25 19-31 23-36 26-40 29-43

<20 <20 <20 <20 <20 25 28 31 35

CFM/Ft

Throw (Ft)

NC

56 70 84 98 112 140 168 196 224

9-15 11-18 13-22 16-26 19-29 23-37 28-45 31-48 35-51

<20 <20 <20 <20 20 25 29 32 37

4” 0.14CFM/Ft

Throw (Ft)

NC

72 90 108 126 144 180 216 252 288

11-19 14-23 19-28 21-33 24-38 30-46 35-53 38-57 41-61

<20 <20 <20 <20 21 26 30 34 38

5” 0.18CFM/Ft

Throw (Ft)

NC

122 153 184 214 244 304 364 425 486

15-22 17-28 21-32 25-38 26-42 33-53 38-60 42-64 46-68

<20 <20 <20 20 23 28 32 36 40

8” 0.3CFM/Ft

Throw (Ft)

NC

156 195 234 273 312 390 468 546 624

17-26 19-30 22-34 27-40 28-43 35-55 40-63 44-66 48-70

<20 <20 <20 21 24 29 33 37 41

10” 0.39CFM/Ft

Throw (Ft)

NC

188 235 282 329 376 470 564 658 752

19-28 21-32 24-36 29-42 30-46 37-56 42-63 46-69 50-75

<20 <20 20 22 25 30 35 38 42

12” 0.47CFM/Ft

Throw (Ft)

NC

88 110 132 154 176 220 264 308 352

13-20 15-25 19-30 23-36 25-40 31-50 37-58 40-61 43-65

<20 <20 <20 22 27 31 35 39

6” 0.22CFM/Ft

Throw (Ft)

NC <20

Table No. 5 ( 15˚ Deflection Liner Bar Grille )

::::

:



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Ak

400 500 600 700 800 1000 1200 1400 1600

0.009 0.014 0.021 0.028 0.036 0.056 0.08 0.11 0.146

Velocity (fpm)WIDTH

(inch)

Area Factor

( Ft 2/Ft)AK

Total Pressure(Inch W.G.)

36 45 54 63 72 90 108 126 144

7-12 10-15 11-17 12-19 14-23 18-29 22-23 25-37 28-41

<20 <20 <20 <20 20 24 28 32 37

3” 0.09CFM/Ft

Throw (Ft)

NC

52 65 78 91 104 130 156 182 208

8-14 10-17 12-21 15-24 17-27 22-35 26-42 29-46 32-49

<20 <20 <20 <20 20 25 29 33 38

4” 0.13CFM/Ft

Throw (Ft)

NC

84 105 126 147 168 210 252 294 336

14-24 18-29 22-35 24-39 30-47 34-52 38-57 41-60

<20 <20 <20 22 28 32 35 4020

12-196” 0.21

CFM/Ft

Throw (Ft)

NC

120 150 180 210 240 300 360 420 480

14-21 20-30 24-36 25-40 31-49 35-53 39-58 42-61

<20 <20 <20 21 24 29 33 37 41

16-268” 0.29

CFM/Ft

Throw (Ft)

NC

152 190 228 266 304 380 456 532 608

18-27 21-31 25-38 27-41 33-50 36-54 40-59 43-62

<20 <20 20 22 26 30 34 38 42

16-2410” 0.38

CFM/Ft

Throw (Ft)

NC

184 230 276 322 368 460 552 644 736

20-29 22-33 27-39 29-43 35-51 38-56 42-61 46-67

<20 <20 21 24 27 32 36 39 43

18-2612” 0.46

CFM/Ft

Throw (Ft)

NC

68 85 102 119 136 170 204 238 272

13-22 16-27 21-33 23-36 29-45 34-50 37-54 40-58

<20 <20 <20 <20 21 26 30 34 39

10-185” 0.17

CFM/Ft

Throw (Ft)

NC

Table No.6 ( 30˚ Deflection Liner Bar Grille )

::::

:



Performance Notes

14

PERFORMANCE NOTES

• Add 2 dB to the tabulated NC values in case of grille with damper .

• Add 4 dB to the tabulated NC values for return grilles .

• For other active lengths , use the following corrections :

Table No. 7 – NC correction factors

DEFINITIONSVELOCITYNC

TOTAL PRESSURETHROW

Ak

::

::

:

Is discharge velocity measured at face of grille in (FPM) .Noise criteria for the supply grille without damper with room effect of 8 dB and 8’ active length ( see NC correction values in table No. (7)). Is in inches W.G. for supply grille without damper .Is for 8’ active length supply grille without damper for 100 and 50 FPM terminal velocities respectively . ( see throw correction value in table No. (8) ).Is area factor in Ft2/Ft RunFor other non – listed widths, use the following formula :

Ak = , W : width in inchesW- 0.85

24

CORRECTIONS

NC ( Noise Criteria ) :

• For grille with damper , multiply the tabulated value by 1.4

• For return grilles, multiply by 0.85


• For other active lengths use the following corrections :

Throw :

Active length (Ft) 1’ 2’ 4’ 6’ 8’ 10’ 12’Multiply throw by 0.60 0.7 0.8 0.9 1.0 1.2 1.4

Table No. 8 – Throw correction factors

Installation Details

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INSTALLATION DETAILS

Ceiling Installation

Here is the most commonly used methods of installing DASCO Linear Bar Grilles/Registers for different site applications ( Ceiling/Side wall/Floor)

Floor Installation

Side wall Installation

Floor Grilles & Registers

16

FLOOR GRILLES & REGISTERS

Floor grille DFG – 21HFloor grille DFGL – 21H

DASCO Floor Grilles and Registers (DFG -21 H/V & DFR -21 H/V) are designed to be installed on floors where air ducts are required to be underneath the floor level, such as for computer rooms. They are des igned to withstand 450 kg. point load for heavy duty applications.

GENERAL

Floor grille DFG – 21H

DFG -21 H/V are multiparallel, horizontal or vertical fixed Bars in continuous modular sections. They are available in fixed pattern of air flow (Zero deflection) for supplying vertical air flow. Bars are of heavy duty type 6mm wide, and are equally spaced at(1/4”) distance.

Description

Mullion bars across the blades provide additional strength and extra special reinforcement in the structure of the grille to withstand loads up to 450 kg. Bars are fixed by a standard frame (1.5mm thickness). Special type heavy duty frames with 7mm thickness are also available forming an extra special heavy type of floor grilles.Both horizontal and vertical bar models can be supplied with apposed blade dampers and are called registers DFR-21 H/V.

Floor grille DFGL – 21H

17

Floor Grilles & Registers

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Frame blades and dampers are all of heavy gauge extruded aluminum sections in matt silver anodized finish. Blades are 6mm thickness, and standard frames are flat type extruded aluminum with 1.5 mm thickness sections. Special blades for heavy duty type floor grilles are available in 7mm thickness. DASCO floor grilles can be supplied in white polyester powder coating finish or any other specified RAL- standard colour upon your requirement .

MATERIAL & FINISH:

ORDERING CODE :

DFXL – 21a - WxH

TYPEGrilleRegister (Grille with damper)Blade settingHorizontalVerticalNeck size, (inch)

XGRaHVWXH

:::::::

DASCO FLOOR AIR GRILLES & REGISTERS( Ordinary – Light duty – Type )

1.

DFX – 21a - WxH

TYPEGrilleRegister (Grille with damper)Blade settingHorizontalVerticalNeck size, (inch)

XGRaHVWXH

:::::::

DASCO FLOOR AIR GRILLES & REGISTERS( Heavy duty Type )

2.


18

BASIC PERFORMANCE DATA

SIZEW x H(inch)

Area Factor

( Ft2)

Velocity (fpm)

St. Pressure(Inch W.G)

400 500 600 700 800 1000 1200 1400 1600

0.01 0.016 0.025 0.039 0.052 0.093 0.134 0.178 0.218

0.25104 132 160 188 216 272 328 384 440

<20 <20 <20 <20 20 25 28 31<20NC

CFM12x6

NC

CFM 142 178 214 250 286 358 430 502 574

<20 <20 <20 <20 20 23 26 29 330.34

12x816x6

NC

CFM 180 228 276 324 372 468 564 660 756

<20 <20 <20 <20 21 24 27 31 350.43

12x1020x6

NC

CFM 217 269 321 373 425 529 633 737 841

<20 <20 <20 <20 22 25 29 33 370.52

12x1218x824x6

NC

CFM 305 362 420 478 536 652 770 890 1051

<20 <20 <20 20 23 26 30 34 380.73

12x1220x1024x8

NC

CFM 335 415 476 559 650 796 944 1090 1237

<20 <20 <20 21 27 31 35 39240.84

16x1418x1232x6

NC

CFM 378 453 540 631 736 904 1073 1241 1409

<20 <20 <20 22 26 29 32 36 400.90

20x1224x10

NC

CFM 450 567 648 756 881 1089 1296 1504 1712

<20 <20 <20 23 27 31 34 37 411.10

24x1224x10

NC

CFM 574 697 819 946 1104 1360 1615 1871 2127

<20 <20 <20 24 28 32 35 39 421.45

20x1830x1236x10

NC

CFM 929 1107 1324 1521 1771 2195 2618 3040 3469

<20 <20 21 25 29 33 36 40 442.3724x24

NC

CFM 1180 1370 1656 1895 2194 2729 3228 3758 4288

<20 <20 22 26 30 34 38 41 453.2130x24

NC

CFM 1381 1631 1987 2265 2595 3230 3866 4500 5136

<20 <20 23 27 31 35 39 43 474.0336x24

Table No. 9 - Floor Grille DFGL - 21H

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400 500 600 700 800 1000 1200 1400 1600

0.01 0.016 0.025 0.039 0.052 0.093 0.134 0.178 0.218

Velocity (fpm)SIZEW x H(inch)

Area Factor

( Ft2 ) St. Pressure(Inch W.G)

126 162 180 216 252 306 360 414 468

<20 <20 <20 <20 23 26 29 32200.26

NC

CFM12x6

NC

CFM 168 216 240 288 335 408 481 554 627

<20 <20 <20 <20 21 24 27 30 330.35

12x816x6

NC

CFM 210 270 300 358 417 508 599 690 781

<20 <20 <20 <20 22 26 30 34 370.44

12x1020x6

NC

CFM 252 296 340 428 498 610 722 834 946

<20 <20 <20 20 23 27 31 35 380.53

12x1218x824x6

NC

CFM 351 442 510 590 686 840 994 1148 1302

<20 <20 <20 21 24 28 32 36 400.75

16x1220x1024x8

NC

CFM 378 477 540 635 738 905 1072 1239 1406

<20 <20 <20 22 29 33 37 41250.86

16x1418x1232x6

NC

CFM 420 530 600 704 818 1005 1192 1379 1566

<20 <20 <20 23 26 30 34 38 420.93

20x1224x10

NC

CFM 504 630 720 840 979 1210 1441 1672 1903

<20 <20 20 24 28 32 36 39 431.12

24x1236x8

NC

CFM 630 766 900 1040 1213 1494 1775 2056 2337

<20 <20 21 25 29 33 37 40 451.48

20x1830x1236x10

NC

CFM 1010 1203 1440 1654 1925 2385 2845 3305 3765

<20 <20 22 26 30 34 38 41 462.4124x24

NC

CFM 1283 1490 1800 2060 2384 2966 3548 4130 4712

<20 <20 23 27 31 35 39 42 473.2530x24

NC

CFM 1502 1773 2160 2462 2852 3550 4248 4946 5644

<20 <20 24 28 32 36 40 44 484.0936x24

Table No. 10 - Floor Grille DFG - 21H

20

PERFORMANCE NOTES

Floor Register DFRL – 21H

• Add 2 dB to the tabulated NC value in case of grille with damper .

• Add 4 dB to the tabulated NC value for return grilles .

DEFINITIONSVELOCITYNCSTATIC PRESSUREAk

::::

Is discharge velocity measured at face of grille in (FPM) .Noise criteria for the supply grille without damper with room effect of 8 dB.Is in inches W.G. for supply grill without damper .Is area factor in Ft2

CORRECTIONS


• For grille with damper, multiply the tabulated value by 1.4

• For return grilles, multiply by 0.8

Static Pressure :

Table No. 11 - Metric Guide Conversion Factors.

Bar Grille DLBG – 0º

21

Conversion Table

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CONVERSION TABLE

Different samples from DASCO air terminal devices (Linear Bar Grilles and Registers) were tested at ITS (Intertek Testing Services) labs in accordance with:

TESTING AND APPROVAL

Testing & Approval

22

Air diffusion council test code for grilles, registers and diffusers No. ADC 1062: GRD-84.ISO 5219 “Air distribution and air diffusion laboratory aerodynamic testing and rating of air terminal devices”.ANSI/ASHRAE 70-1991, “Method of testing for rating the performance of air outlets and inlets”.

•

•

•

TESTING AND APPROVAL

LINEAR BAR GRILLES AND REGISTERS WERE TESTED FOR

Sound (NC Noise Criteria).Static pressure in inches W.G.Throw, feet.Ak (Area factor).

a.b.c.d.

DASCO offers a first class service by introducing a wide range of perfect polyester powder coating on all of its aluminium products of air terminal devices.The best quality of polyester powder Corro-Coat are used in according to the inter--national standards (BS,ISO,DIN,ASTM). PE-F architectural grade polyester powders are used perfectly with pre-treatment, electrostatic spray and curing in accordance with the above standards recommendations. A complete range of RAL-Standard colours are always available in addition to a vast range of special compound colours as per our customers request.

COATING WITH POWDERCOATING WITH POWDER

NOW YOU CAN ACHIEVE OPTIMAL COATING PERFORMANCEON ALL PRODUCTS YOU PAINT!

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RAL Standard Colour Chart Swatch

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Now producing relief knots as in natural wood

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New Technology ExcellenceResistance to high radiation and extreme climatic conditions.It can be used in painting elaborate geometrical shapes producing perfect quality and aesthetic results.It is the only technology that can replace wood in traditional areas.

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New Mahogany - 21

New Mahogany - 22

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www.dasco.com.kw

Since 1962

P.O. Box: 6192 Hawalli 32036 Kuwait.Tel: +965 4839911 Fax: +965 4815498

www.dasco.com.kw Prod

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