BC 08. Sand Trap Louvers STL-AB-11A LISTED

BC 08 Sand Trap Louvers STL-AB-11A

Table Of Contents S. No Description Page No 1 General Information 1 2 Various Models 2 3 STL - B-10 Series 4 STL - BC-20 Series 3 4 5 6 STL - B-30 Series STL - B-40 Series 5 6 7 8 Multiple Assembly Engineering and Performance Data 7 8-13 9 Ordering Data 13 10 Installation Details 14

Sand Trap Louver - STL BETEC CAD. manufactures Sand Trap Louvers for fresh air intake in HVAC systems, which are designed to separate sand and dust particles at low and medium air velocities thus avoiding excessive dust loading on conventional secondary stage filters. They give excellent performance for air filtration and moderate pressure drops at low air velocities. Drainage holes at the bottom of Sand Trap Louver makes it self cleaning and maintenance free. STL-AB-11A Standard Types and Models Item Series Width Model Material Options 11-100* A-Exposed Plain* STL B-10 B-20 B-30 12-130 B-Duct Mounted C-Flushed Filter Filter+Damper 21-100 A-Exposed Plain* 22-130* B-Duct Mounted C-Flushed Filter Filter+Damper 31-100* A-Exposed Plain* 32-150 B-Duct Mounted C-Flushed A*, G,S A*, G,S A*, G,S Filter Filter+Damper 41-100* A-Exposed Plain* B-40 B-Duct Mounted A*, G,S Filter Heavy Duty 42-130 C-Flushed Filter+Damper Square Square Curved Square Material Details All types and models of Sand Trap Louvers are available in Galvanized Steel, Stainless Steel & Aluminium according to the design and application. Sheet Metal Galvanized Steel (GI) Zinc coating Z-22 to Z-27 as per ASTM-A653 Standards. Sheet Metal Aluminium (AL) Aluminium Sheet as per Alloy A1100 Standards. Extruded aluminium as per Alloy 6063 A Standards. Sheet Metal Stainless Steel (SS) Stainless steel 304 / 316L. Applications: GI Construction : For HVAC commercial,residential etc. AL Construction : For Hospitals,Labs,Green Building etc. SS Construction : For Offshore, Oil & Gas etc. The respective alphabet indicates the type of material G - Galvanized steel (GI) S - Stainless steel (SS) A - Aluminum (AL) Alphabet indicates the type of installation. A - Wall Mouted. B - Duct Mounted. C - Flush Mounted. BETEC CAD. Sand Trap louver's construction confirms to ADC 1602 standard and DW 142 class C. Note: * Indicates BETEC CAD s Standard Construction 1

BETEC CAD. Manufactures variety of models. B-10 Series 1. STL-AB-11A (AMCA500-L Tested) /12 A/B Exposed type with square blade 2. STL-AB-11C Flushed type with square blade Sand Trap Louvers B-20 Series 1. STL-AB-21/22 A/B Exposed type with square blade STL-AB-11A 2. STL-AB-22C (AMCA500-L Tested) Flushed type with square blade STL-AB-11C B-30 Series 1. STL-AB-31/32 A/B Exposed type with curved blade STL-AB-21A 2. STL-AB-31/32 C Flushed type with curved blade STL-AB-22C B-40 Series 1. STL-AB-41/42 A/B Exposed type with square blade STL-AB-31A 2. STL-AB-41/42 C Flushed type with square blade STL-AB-31C STL-AB-41A STL-AB-41C 2

AMCA500 - L Tested Sand Trap Louver For Light / Medium duty applications Model: STL-AB-11A (AMCA 500-L); Width: 1 100* mm; 2 130 mm Type : A - Wall Mounted; B - Duct Mounted ; C - Flush Mounted Sand Trap Louvers B-10 Series STL-AB10-A/B STL-AB10-A+F STL-AB10-C+F STL-AB10-A+F+D Standard Construction Frame 1.2 mm thick extruded aluminum profile. 1.2 mm thick extruded aluminum profile. Orientation Vertical. Type U Shaped 100 mm. Screen Galvanized Steel 0.4 mm thickness. Finish Mill finish. Optional Fittings U Shaped 130 mm. Screen S-3 SS Bird Screen S-10 SS Fly Screen Filter 13 / 25 mm thickness aluminum media filter. Damper Control Damper Mounting Angles Mounting frame and angle flange. Finish Available with RAL powder coating, please specify color. Note : Please contact BETEC CAD. for customized design and specification. B-10 Series Model Details Frame Model Material Thickness Material Thickness STL-AB-11/12A/B/C AL 1.2* mm AL 1.2* mm STL-GB-11/12A/B/C GI 1.2 mm GI 0.9 mm STL-SB-11/12A/B/C SS 1.2 mm SS 0.9 mm Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Optional Construction Details Frame : Thickness up to 4 mm : Thickness up to 4 mm Any Combination of W x H STL-AB-11/12 W in Inchs 4" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" H in inches 4" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" Note: Maximum single module construction - 3 x 1.8 meters Multiple module available with mullion. Applications : Sand Trap Louvers B-11 Light duty and B-12 Medium duty model construction, are suitable for the duct or wall mounting applications in HVAC systems, where excessive intake air filtration is required for ventilation purpose. Sand Trap Louvers fitted with filters and dampers are suitable for the AHU's applications for fresh air intake. 3

AMCA500 - L Tested Sand Trap Louver For Light / Medium duty applications Model: STL-AB-22C (AMCA 500-L); Width: 1 100 mm; 2 130* mm Type : A - Wall Mounted ; B - Duct Mounted; C - Flush Mounted Sand Trap Louvers B-20 Series STL-AB-20C STL-AB-20C Standard Construction Frame 1.5 mm thick aluminium roll formed profile. 1.2 mm thick aluminium roll formed profile. Orientation Vertical. Type U Shaped 130 mm. Screen Galvanized Steel 0.4 mm thickness. Finish Mill finish. Optional Fittings U Shaped 100 mm. Screen S-3 SS Bird Screen S-10 SS Fly Screen Filter 13 / 25 mm thickness aluminum media filter. Damper Control Damper Mounting Angles Mounting frame and angle flange. Finish Available with RAL powder coating, please specify color. B-20 Series Model Details Frame Model Material Thickness Material Thickness STL-AB-21/22A/B/C AL 1.5* mm AL 1.2* mm STL-GB-21/22A/B/C GI 1.5 mm GI 1.2 mm STL-SB-2122A/B/C SS 1.2 mm SS 0.9 mm Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Any Combination of W x H STL-AB-21/22 W in Inchs 4" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" H in inches 4" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" Note: Maximum single module construction - 3 x 2 meters Multiple module available with mullion. Applications : Sand Trap Louvers AB-21 Light duty and AB-22 Medium duty model construction, are suitable for the duct or wall mounting applications in HVAC systems, where excessive intake air filtration is required for ventilation purpose. Sand Trap Louvers fitted with filters and dampers are suitable for the AHU's applications for fresh air intake. Note : Please contact BETEC CAD. for customized design and specification. 4

Sand Trap Louver For Light / Medium duty applications Model: STL-AB-31A; Width: 1 100* mm; 2 150 mm Type : A - Wall Mounted; B - Duct Mounted; C - Flush Mounted Sand Trap Louvers B-30 Series STL-AB-30A/B STL-AB-30A+F STL-AB-30C+F STL-AB-30A+F+D Standard Construction Frame 1.2 mm thick extruded aluminum profile. 0.9 mm thick roll formed aluminum curved profile. Orientation Vertical. Type Curved type 100 mm. Screen Galvanized Steel 0.4 mm thickness. Finish Mill finish. Optional Fittings Curved type 150 mm. Screen S-3 SS Bird Screen S-10 SS Fly Screen Filter 13 / 25 mm thickness aluminum media filter. Damper Control Damper. Mounting Angles Mounting frame and angle flange. Finish Available with RAL powder coating, please specify color. B-30 Series Model Details Frame Model Material Thickness Material Thickness STL-AB-31/32A/B/C AL 1.2 mm AL 0.9 mm STL-GB-31/32A/B/C GI 1.2 mm GI 0.9 mm STL-SB-31/32A/B/C SS 1.2 mm SS 0.9 mm Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Optional Construction Details Frame : Thickness up to 4 mm : Thickness up to 4 mm Any Combination of W x H STL-AB-31/32 W in Inchs 4" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" H in inches 4" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" Note: Maximum single module construction - 3 x 1.5 meters Multiple module available with mullion. Applications : Sand Trap Louvers B-31 Light duty and B-32 Medium duty model construction, are suitable for the duct or wall mounting applications in HVAC systems, where excessive intake air filtration is required for ventilation purpose. Sand Trap Louvers fitted with filters and dampers are suitable for the AHU's applications for fresh air intake. Note : Please contact BETEC CAD. for customized design and specification. 5

Sand Trap Louver Sand Trap Louvers B-40 Series For Heavy duty applications Model: STL-AB-41A; Width: 1 100* mm; 2 130 mm Type : A - Wall Mounted; B - Duct Mounted; C - Flush Mounted Filter Filter 150 STL -AB-40A/B/C STL -AB-40A+F STL -AB-40C+F STL -AB-40A+F+D Standard Construction Frame 2 mm thick extruded aluminum profile. 2 mm thick extruded aluminum profile. Orientation Vertical Type U Shaped 100 mm Screen Galvanized Steel 0.4 mm thickness. Finish Mill finish. Optional Fittings U Shaped 130 mm Screen S-3 SS Bird Screen S-10 SS Fly Screen Filter 13 / 25 mm thickness aluminum media filter. Damper Control Damper Mounting Angles Mounting frame and angle flange. Finish Available with powder coating, please specify color. Note : Please contact BETEC CAD. for customized design and specification. B-40 Series Model Details Frame Model Material Thickness Material Thickness STL-AB-41/42A/B/C AL 2 mm AL 2 mm STL-GB-41/42A/B/C GI 2 mm GI 2 mm STL-SB-41/42A/B/C SS 2 mm SS 2 mm Alphabet indicates the type of installation A - Wall Mounted B - Duct Mounted C - Flush Mounted Optional Construction Details Frame : Thickness up to 4 mm : Thickness up to 4 mm Any Combination of W x H STL-AB-41/42 W in Inchs 4" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" H in inches 4" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" Note: Maximum single module construction - 3 x 2.5 meters Multiple module available with mullion. Applications : Sand Trap Louvers B-41 and B-42 Heavy duty model construction, are suitable for the duct or wall mounting applications in HVAC systems, where excessive intake air filtration is required for ventilation purpose. Sand Trap Louvers fitted with filters and dampers are suitable for the AHU's applications for fresh air intake. 6

Sand Trap Louver - STL Optional Constructions - Model : STL-B-10/20/30/40 + F1+D+F2+F3 B-10/20/30/40 Series Model : STL-B-10/20/30/40 + F1+D+F2+F3 Sand Filtration Efficiency at different stages at face velocity Vf = 1mt/sec. For STL with Multiple Assembly Construction. Stage Sand Particle in Microns ( µ) % Efficiency Stage 1 150-700 60-75% Stage 2 75-150 75% Stage 3 75-150 75% Stage 4 25-100 90% Stage 5 10-50 96% Note : Stage 3 will not effect filtration of sand particles & efficiency. 7

Sand Trap Louver - STL Engineering and Performance Data B-10 Series Selection table for Model : STL-AB-11A Free area Ak in mt 2 For Model : STL-AB-11A AMCA500-L Tested. W/H 300 450 600 750 900 1050 1200 1500 1800 2100 2400 300 0.010 0.018 0.025 0.033 0.040 0.048 0.055 0.070 0.085 0.100 0.115 450 0.020 0.035 0.050 0.065 0.080 0.095 0.110 0.140 0.170 0.200 0.230 600 0.030 0.053 0.075 0.098 0.120 0.143 0.165 0.210 0.255 0.300 0.345 750 0.040 0.070 0.100 0.130 0.160 0.190 0.220 0.280 0.340 0.400 0.460 900 0.050 0.088 0.125 0.163 0.200 0.238 0.275 0.350 0.425 0.500 0.575 1050 0.060 0.105 0.150 0.195 0.240 0.285 0.330 0.420 0.510 0.600 0.690 1200 0.070 0.123 0.175 0.228 0.280 0.333 0.385 0.490 0.595 0.700 0.805 1500 0.091 0.158 0.226 0.293 0.361 0.428 0.496 0.630 0.765 0.900 1.035 1800 0.111 0.193 0.276 0.358 0.441 0.523 0.606 0.771 0.936 1.101 1.265 2100 0.131 0.228 0.326 0.423 0.521 0.618 0.716 0.911 1.106 1.301 1.496 2400 0.151 0.264 0.376 0.488 0.601 0.713 0.826 1.051 1.276 1.501 1.726 1220 x 1200 mm Louver free area 0.385 Sq.mt Model : STL-AB-11A Pressure Drop V/S Face Velocity Graph. as per AMCA500-L 0.3 Water Penetration (oz. wtr./sq.ft free area) 0.2 0.1 Pressure (in. wg) Intake Exhaust 0.01 * 0 100 200 300 350 400 450 500 550 600 650 Free Area Velocity (fpm) AMCA Standard 500-L Water Penetration Test (15 minutes Test Duration ) Setup for Size: 48 x 48 The Beginning point of water penetration is 375 fpm. AMCA Standard 500-L Intake / Exhaust Test Setup for Size: 48 x 48 Data is corrected to standard air density. 8

Sand Trap Louver - STL Engineering and Performance Data B-20 Series Selection table for Model : STL-AB-22C Free area Ak in mt 2 For Model : STL-AB-22C AMCA500-L Tested. W / H 300 450 600 750 900 1050 1200 1350 1500 300 0.016 0.024 0.033 0.041 0.049 0.057 0.065 0.073 0.081 450 0.024 0.037 0.049 0.061 0.073 0.085 0.098 0.110 0.122 600 0.033 0.049 0.065 0.081 0.098 0.114 0.130 0.146 0.163 750 0.041 0.061 0.081 0.102 0.122 0.142 0.163 0.183 0.203 900 0.049 0.073 0.098 0.122 0.146 0.171 0.195 0.219 0.244 1050 0.057 0.085 0.114 0.142 0.171 0.199 0.228 0.256 0.284 1200 0.065 0.098 0.130 0.163 0.195 0.228 0.260 0.293 0.325 1350 0.073 0.110 0.146 0.183 0.219 0.256 0.293 0.329 0.366 1500 0.081 0.122 0.163 0.203 0.244 0.284 0.325 0.366 0.406 1220 x 1220 mm Louver free area 0.260 Sq.mt Model : ST L-AB-22C Pressure Drop V/S Face Velocity Graph. as per AMCA500 - L Water Penetration (oz. wtr./sq.ft free area) 0.3 0.2 0.1 9.9999998 1 Pressure (in. wg) 0.1 Intake Exhaust 0.01 * 600 650 700 750 800 850 900 950 1000 1050 Free Area Velocity (fpm) 0.01 100 1000 10000 AMCA Standard 500-L Water Penetration Test (15 minutes Test Duration ) Figure 5.6 Setup for Size: 48 x 48 The Beginning point of water penetration is 656 fpm. AMCA Standard 500-L Intake / Exhaust Test Figure 5.5 Setup for Size: 48 x 48 Data is corrected to standard air density. 9

Sand Trap Louver - STL Engineering and Performance Data B-10/20 Series Model : STL-AB-11A Sand Rejection V/S Face Velocity Graph. (as per BSRIA) Effectiveness of Louve r with Simulated sand with Filter Effectiveness of Louve r with Simulated sand without Filter 120% 120% 100% 100% Rejected sand % 80% 60% 40% Rejected sand % 80% 60% 40% 20% 20% 0% 0.00 1.00 2.00 3.00 4.00 Face velocity m/s 0% 0.00 1.00 2.00 3.00 4.00 Face velocity m/s Sand Rejection Efficiency (as per BSRIA) Model : STL-AB-11 Description STL STL + F1 STL+F1+D+F2+F3 Face Velocity 0.5 mt /s 1.0 mt /s 0.5 mt /s 1.0 mt /s 0.5 mt /s 1.0 mt /s Partical Size 150-700 150-700 75-150 75-150 75-150 75-150 % Efficiency 92% 75% 95% 77% 98% 96% Model : STL-BC-22C Sand Rejection V/S Face Velocity Graph. (as per BSRIA) Effectiveness of Louver with Simulated sand with Filter Effectiveness of Louver with Simulated sand without Filter Rejected sand % 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 0.00 1.00 2.00 3.00 4.00 Face velocity m/s Rejected sand % 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 0.00 1.00 2.00 3.00 4.00 Face velocity m/s Sand Rejection Efficiency (as per BSRIA) Model : STL-BC-22C Description STL STL + F1 STL+F1+D+F2+F3 Face Velocity 0.5 mt /s 1.0 mt /s 0.5 mt /s 1.0 mt /s 0.5 mt /s 1.0 mt /s Partical Size 150-700 150-700 75-150 75-150 75-150 75-150 % Efficiency 89% 75% 92% 78% 98% 96% 10

Sand Trap Louver - STL Engineering and Performance Data Selection table for Model : STL-AB-30 B-30 Series Free area Ak in mt2 For Model : STL-AB-30 W X H 300 450 600 750 900 1050 1200 1350 1500 300 0.045 0.068 0.090 0.113 0.135 0.158 0.176 0.198 0.221 450 0.068 0.101 0.135 0.169 0.203 0.236 0.265 0.298 0.331 600 0.090 0.135 0.180 0.225 0.270 0.315 0.353 0.397 0.441 750 0.113 0.169 0.225 0.281 0.338 0.394 0.441 0.496 0.551 900 0.135 0.203 0.270 0.338 0.405 0.473 0.529 0.595 0.662 1050 0.158 0.236 0.135 0.394 0.473 0.551 0.617 0.695 0.772 1200 0.176 0.265 0.353 0.441 0.529 0.617 0.706 0.794 0.882 1350 0.198 0.298 0.397 0.496 0.595 0.695 0.794 0.893 0.992 1500 0.221 0.331 0.441 0.551 0.662 0.772 0.882 0.992 1.103 Model : STL-AB-30 Pressure Drop V/S Face Velocity Graph. Model : STL-AB-30 Sand Rejection V/S Face Velocity Graph. Effectiveness of Louvre with Simulated sand with filter 9.9999998 100% 90% 80% 70% 1 Rejected sand % 60% 50% 40% 30% 20% Pressure (in. wg) Intake Exhaust 10% 0% 0.00 1.00 2.00 3.00 4.00 Face velocity m/s 0.1 Effectiveness of Louvre with Simulated sand without filter 100% 90% 80% 0.01 100 1000 10000 Rejected sand % 70% 60% 50% 40% 30% 20% 10% 0% 0.00 1.00 2.00 3.00 4.00 Face velocity m/s Description STL Sand Rejection Efficiency Model : STL-AB-30 STL + F1 STL+F1+D+F2+F3 Face Velocity 0.5 mt /s 1.0 mt /s 0.5 mt /s 1.0 mt /s 0.5 mt /s 1.0 mt /s Partical Size 150-700 150-700 75-150 75-150 75-150 75-150 % Efficiency 89% 75% 92% 78% 98% 96% 11

Sand Trap Louver - STL Engineering and Performance Data Selection table for Model : STL-AB-40 B-40 Series Free area Ak in mt2 For Model: STL-AB-40 W/H 300 450 600 750 900 1050 1200 1500 300 0.007 0.014 0.021 0.029 0.036 0.043 0.050 0.065 450 0.014 0.029 0.043 0.058 0.072 0.087 0.101 0.130 600 0.021 0.043 0.065 0.087 0.108 0.130 0.152 0.195 750 0.029 0.058 0.087 0.116 0.145 0.174 0.203 0.261 900 0.036 0.072 0.108 0.145 0.181 0.217 0.253 0.326 1050 0.043 0.087 0.130 0.174 0.217 0.261 0.304 0.391 1200 0.050 0.101 0.152 0.203 0.253 0.304 0.355 0.456 1500 0.065 0.130 0.195 0.261 0.326 0.391 0.456 0.587 Model : STL-AB-40 Pressure Drop V/S Face Velocity Graph. Model : STL-AB-40 Sand Rejection V/S Face Velocity Graph. Effectiveness of Louver with Simulated sand with filter 100% 9.9999998 90% 80% 70% Rejected sand % 60% 50% 40% 30% Pressure (in. wg) 1 Intake Exhaust 20% 10% 0% 0.00 1.00 2.00 3.00 4.00 Face velocity m/s 0.1 Effectiveness of Louver with Simulated sand without filter 100% 90% 80% 0.01 100 1000 10000 Rejected sand % 70% 60% 50% 40% 30% 20% 10% 0% 0.00 1.00 2.00 3.00 4.00 Face velocity m/s Sand Rejection Efficiency Model : STL-AB-40 Description STL STL + F1 STL+F1+D+F2+F3 Face Velocity 0.5 mt /s 1.0 mt /s 0.5 mt /s 1.0 mt /s 0.5 mt /s 1.0 mt /s Partical Size 150-700 150-700 75-150 75-150 75-150 75-150 % Efficiency 92% 75% 95% 77% 98% 96% 12

Sand Trap Louver - STL Engineering and Performance Data Performance data includes Air volume Qv, Effective free area Ak, Total pressure drop and corresponding Face velocities Vf. B-10/20/30/40 Series Qv = Air volume in m³ /sec. Vf = Face velocity in m/s. Vk = Free area velocity in m/s Ak = Free area in m² Af = Face area in m² For known quantity of airflow, Face area is calculated as fllows : Air Volume Qv (m³ /sec.) Face area (m³/sec) = Face velocity Vf(m³ /sec.) Where; Face area (m²) = width (m) x height (m) For known free area, face area is calculated as follows : Pt Ordering Data = Pressure drop in inch. w.g Face area (m²) = Freee area (m²) x 3 STL STL Sand Trap Louver G S A Galvanized Steel Stainless Steel Aluminium G A S Galvanized Aluminium Stainless Steel B BETEC CAD. 10 20 30 40 Sand Trap Louver ( AMCA 500-L) Sand Trap Louver ( AMCA 500-L) Sand Trap Louver Curved s Sand Trap Louver Heavy Duty 1 2 Up to 100 mm Up to 150 mm A B C Exposed / Wall mounting Type Duct Mounting Type Flush Mounting Type X X X X X Frame Material Material Note : 1) For blade type, add Series to blade type. For example: STL-AB-(10+1=11) A =STL-AB-11A. B Series 2) If frame and blade material is same, use single alphabet. Type Example : STL-AB-11-A, where A = Aluminium Frame and. STL-GB-11-A, where G = Galvanized Frame and. Operation 13

Sand Trap Louver - STL B-10/20/30/40 Series Installation Details Note : Fixing Details - Standard supply type screw fixing Recommended for side wall applications. 14

Special Notes: Sand Trap Louvers

Special Notes: Sand Trap Louvers

Special Notes: Sand Trap Louvers

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