for Pleasant & Healthy Air-Distribution ISO 9001:2000 Linear Bar & Floor Grilles Product Bulletin 135-D
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1 for Pleasant & Healthy Air-Distribution ISO Product Bulletin 135-D Linear Bar & Floor Grilles
2 Pleasant.. Serene.. YOU & DASCO... Since 1964 Partners for good health
3 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, line architectural appearance and are designed for fan tops, grilles of swimming pools, ventilation outlets and many other applications. 1 Introduction
4 LINEAR BAR GRILLES & REGISTERS GENERAL 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. Bar Grille DLBG W DESCRIPTION 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. Mullion bars across the blades provide additional strength. Mitered corners available in various arrangements to suit different installations. Mitered Corner (90 angle) Mitered Corner (135 angle) 2 Linear Bar Grilles
5 MATERIAL & FINISH 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. PRODUCT CODE (ORDERING KEY) DASCO LINEAR BAR GRILLES & REGISTERS DLBX D A W L X G R D O Oy A 1W 2W TYPE Grille Grille with V.C.D. (Register) Deflection Angle Zero degree deflection Zero degree deflection (Special blade) 15 degree deflection 30 degree deflection Air pattern One-way deflection Two-way deflection W L Width of neck (inch or mm) Length (inch or mm) 3 Linear Bar Grilles
6 Complete dimensional details for DASCO Linear Bar Grille DLBG-15-1W. LISTED WIDTHS Table No (1) Listed Widths Note Sizes other than listed are also available upon request. AREA FACTORS Below is the area factor per foot for DASCO Linear Bar Grilles (Ak) Table No (2) Area Factor (AK) Note For use with alnor velometer with Tip No.2220 or 2220A CFM Ak L Vk = = = = Ak x L x Vk, where Area Factor in Ft 2 /Ft Run Active Length of Linear Bar Grille in feet. Average velocity as measured by Alnor Velometer with Tip No.2220 or 2220A. 4 Linear Bar Grilles
7 DIMENSIONAL DATA (Linear Bar Grilles) LISTED WIDTH + 58 mm 12.5 mm(1/2 ) 32 mm LISTED + 58 mm 6mm 12.5mm(1/2 ) 32 mm 51.5 mm 3 mm(1/8 ) LISTED WIDTH DLBG 0 DASCO Linear Bar Grille with fixed bar 0 deflection 51.5 mm 3 mm(1/8 ) DLBG 0 Y DASCO Linear Bar Grille with fixed bar (special blade) 0 deflection LISTED WIDTH + 58 mm LISTED WIDTH + 58 mm mm(1/2 ) 32 mm mm(1/2 ) 32 mm 51.5 mm 3 mm(1/8 ) 51.5 mm 3 mm(1/8 ) LISTED WIDTH LISTED WIDTH DLBG 15 W DASCO Linear Bar Grille with fixed bar 15 one-way deflection DLBG 15-2W DASCO Linear Bar Grille with fixed bar 15 two-way deflection LISTED WIDTH + 58 mm LISTED WIDTH + 58 mm mm(1/2 ) 32 mm mm(1/2 ) 32 mm 51.5 mm 3 mm(1/8 ) 51.5 mm 3 mm(1/8 ) LISTED WIDTH LISTED WIDTH DLBG 30-1W DASCO Linear Bar Grille with fixed bar 30 one-way deflection DLBG 30-2W DASCO Linear Bar Grille with fixed bar 30 two-way deflection 5 Dimensional Data
8 DIMENSIONAL DATA (Linear Bar Registers) LISTED WIDTH + 58 mm 12.5 mm(1/2 ) 32 mm LISTED + 58 mm 6mm 12.5mm(1/2 ) 32 mm 51.5 mm 3 mm(1/8 ) 51.5 mm 3 mm(1/8 ) LISTED WIDTH DLBR 0 DASCO Linear Bar Register with fixed bar 0 deflection with opposed blade lever operated damper DLBR 0 Y DASCO Linear Bar Register with fixed bar (special blade) 0 deflection with opposed blade lever operated damper LISTED WIDTH + 58 mm LISTED WIDTH + 58 mm mm(1/2 ) 32 mm mm(1/2 ) 32 mm 51.5 mm 3 mm(1/8 ) 51.5 mm 3 mm(1/8 ) LISTED WIDTH LISTED WIDTH DLBR-15-1W DASCO Linear Bar Register with fixed bar 15 one way deflection with opposed blade lever operated damper DLBR-15-2W DASCO Linear Bar Register with fixed bar 15 two-way deflection with opposed blade lever operated damper LISTED WIDTH + 58 mm LISTED WIDTH + 58 mm mm(1/2 ) 32 mm mm(1/2 ) 32 mm 51.5 mm 3 mm(1/8 ) 51.5 mm 3 mm(1/8 ) LISTED WIDTH LISTED WIDTH DLBR-30-1W DASCO Linear Bar Register with fixed bar 30 one way deflection with opposed blade lever operated damper DLBR-30-2W DASCO Linear Bar Register with fixed bar 30 two-way deflection with opposed blade lever operated damper 6 Dimensional Data
9 ACCESSORIES A complete variety of accessories and options are available for DLB (G,R) series liner Bar Grilles and Registers. 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. DIFFERENT SETTINGS OF MITERED CORNERS 1. STANDARD 90 HORIZONTAL MITERED CORNER SECTION Suitable 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. 2. SPECIAL HORIZONTAL MITERED CORNER SECTION Suitable 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. 7 Accessories
10 3. 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. 4. VERTICAL INSIDE MITERED CORNER SECTION Designed 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. Curved Bar Grille (Convex Shape) Curved Bar Grille (Concave Shape) 8 Accessories
11 BALAING DATA AND SELECTION PROCEDURE HOW TO DETERMINE ( CFM )? Use an Alnor Velometer with tip No 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. 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 0.19 CFM=Ak x Active Length x Average Velocity =0.19 x 7 x 525 =700 CFM 9 Balancing and Selection
12 BASIC PERFORMAE DATA DASCO Linear Bar Grille Model DLBG - 0 WIDTH (inch) Area Factor AK ( Ft 2 /Ft) Velocity (fpm) Total Pressure (Inch W.G.) <20 <20 <20 <20 < <20 <20 <20 <20 < <20 <20 <20 <20 < <20 <20 <20 < <20 <20 <20 < <20 <20 <20 < <20 <20 < VELOCITY TOTAL PRESSURE THROW Ak 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 Ft 2 /Ft Run 10 Basic Performance Data
13 DASCO Linear Bar Grille Model DLBG - 0 Y WIDTH (inch) Area Factor AK ( Ft 2 /Ft) Velocity (fpm) Total Pressure (Inch W.G.) <20 <20 <20 <20 < <20 <20 <20 < <20 <20 <20 < <20 <20 < <20 <20 < <20 < <20 < VELOCITY TOTAL PRESSURE THROW Ak Table No. 4 ( 0 Deflection Liner Bar Grille - Special Blade ) 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 Ft 2 /Ft Run 11 Basic Performance Data
14 DASCO Linear Bar Grille Model DLBG - 15 WIDTH (inch) Area Factor AK ( Ft 2 /Ft) Velocity (fpm) Total Pressure (Inch W.G.) <20 <20 <20 <20 < <20 <20 <20 < <20 <20 <20 < <20 <20 <20 < <20 <20 < <20 <20 < <20 < VELOCITY TOTAL PRESSURE THROW Ak Table No. 5 ( 15 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 Ft 2 /Ft Run 12 Basic Performance Data
15 DASCO Linear Bar Grille Model DLBG - 30 WIDTH (inch) Area Factor AK ( Ft 2 /Ft) Velocity (fpm) Total Pressure (Inch W.G.) <20 <20 <20 < <20 <20 <20 < <20 <20 <20 < <20 <20 < <20 <20 < <20 < VELOCITY TOTAL PRESSURE THROW Ak <20 < Table No.6 ( 30 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 Ft 2 /Ft Run 13 Basic Performance Data
16 PERFORMAE NOTES DEFINITIONS VELOCITY TOTAL PRESSURE THROW 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 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 Ft 2 /Ft Run For other non listed widths, use the following formula Ak = W , W width in inches CORRECTIONS ( Noise Criteria ) Add 2 db to the tabulated values in case of grille with damper. Add 4 db to the tabulated values for return grilles. For other active lengths, use the following corrections Table No. 7 correction factors ( Noise Criteria ) For grille with damper, multiply the tabulated value by 1.4 For return grilles, multiply by 0.85 Throw For other active lengths use the following corrections Active length (Ft) Multiply throw by Table No. 8 Throw correction factors 14 Performance Notes
17 INSTALLATION DETAILS Here is the most commonly used methods of installing DASCO Linear Bar Grilles/Registers for different site applications ( Ceiling/Side wall/floor) Ceiling Installation Floor Installation Side wall Installation 15 Installation Details
18 FLOOR GRILLES & REGISTERS GENERAL 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 designed to withstand 450 kg. point load for heavy duty applications. Floor grille DFG 21H Floor grille DFGL 21H Description 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. Floor grille DFGL 21H Floor grille DFG 21H 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. 16 Floor Grilles & Registers
19 MATERIAL & FINISH 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. ORDERING CODE 1. DASCO FLOOR AIR GRILLES & REGISTERS ( Ordinary Light duty Type ) DFXL 21a - WxH X G R a H V WXH TYPE Grille Register (Grille with damper) Blade setting Horizontal Vertical Neck size, (inch) 2. DASCO FLOOR AIR GRILLES & REGISTERS ( Heavy duty Type ) DFX 21a - WxH X G R a H V WXH TYPE Grille Register (Grille with damper) Blade setting Horizontal Vertical Neck size, (inch) 17 Floor Grilles & Registers
20 BASIC PERFORMAE DATA SIZE W x H (inch) Area Factor ( Ft 2 ) Velocity (fpm) St. Pressure (Inch W.G) x CFM <20 <20 <20 <20 < x8 16x CFM <20 <20 <20 < x10 20x6 12x12 18x8 24x6 12x12 20x10 24x8 16x14 18x12 32x6 20x12 24x CFM <20 <20 <20 < CFM <20 <20 <20 < CFM <20 <20 < CFM <20 <20 < CFM <20 <20 < x12 24x10 20x18 30x12 36x CFM <20 <20 < CFM <20 <20 < x CFM <20 < x CFM <20 < x CFM <20 < Table No. 9 - Floor Grille DFGL - 21H 18 Basic Performance Data
21 SIZE W x H (inch) Area Factor Velocity (fpm) ( Ft 2 ) St. Pressure (Inch W.G) x6 12x8 16x6 12x10 20x CFM <20 <20 <20 < CFM <20 <20 <20 < CFM <20 <20 <20 < x12 18x8 24x CFM <20 <20 < x12 20x10 24x CFM <20 <20 < x14 18x12 32x CFM <20 <20 < x12 24x CFM <20 <20 < x12 36x CFM <20 < x18 30x12 36x CFM <20 < x CFM <20 < x CFM <20 < x CFM <20 < Table No Floor Grille DFG - 21H 19 Basic Performance Data
22 PERFORMAE NOTES DEFINITIONS VELOCITY STATIC PRESSURE 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. Is in inches W.G. for supply grill without damper. Is area factor in Ft 2 CORRECTIONS ( Noise Criteria ) Add 2 db to the tabulated value in case of grille with damper. Add 4 db to the tabulated value for return grilles. Static Pressure For grille with damper, multiply the tabulated value by 1.4 For return grilles, multiply by 0.8 Floor Register DFRL 21H 20
23 CONVERSION TABLE Table No Metric Guide Conversion Factors. Bar Grille DLBG 0º 21 Conversion Table
24 TESTING AND APPROVAL Different samples from DASCO air terminal devices (Linear Bar Grilles and Registers) were tested at ITS (Intertek Testing Services) labs in accordance with 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 , Method of testing for rating the performance of air outlets and inlets. LINEAR BAR GRILLES AND REGISTERS WERE TESTED FOR a. b. c. d. Sound ( Noise Criteria). Static pressure in inches W.G. Throw, feet. A k (Area factor). 22 Testing & Approval
25 COATING WITH POWDER NOW YOU CAN ACHIEVE OPTIMAL COATING PERFORMAE ON ALL PRODUCTS YOU PAINT! 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 internnational 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. RAL Standard Colour Chart Swatch 23
26 Now producing relief knots as in natural wood New Technology Excellence Resistance 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. New Mahogany - 21 New Mahogany
27 25
28 Since 1962 P.O. Box 6192 Hawalli Kuwait. Tel Fax Product Bulletin 135-D
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