Drce

Transcript

DRC VARIZON® Displacement unit with adjustable spread pattern DRC Quick facts ►► Adjustable spread pattern and affected area Quick guide A I R  F L O W – S O U N D  L E V E L ►► Suitable for all types of rooms DRC ►► Simple installation Size 25 dB(A) 30 dB(A) 35 dB(A) ►► Cleanable 200 200 (150) 230 (175) 270 (210) 250 300 (240) 350 (275) 425 (330) 315 450 (360) 510 (410) 600 (490) 400 630 (520) 740 (600) 880 (700) 200-600 510 (440) 610 (500) 710 (590) 250-800 810 (600) 950 (700) 1150 (800) ►► Air volume measuring point ►► Available in alternative colours l/s Sound level is valid at 150 m² equivalent sound absorption area at distance of 2 m from terminal. Values in brackets are valid at a an equivalent sound absorption area of 10 m2. All values are valid without disturbance on straight duct section. 1 DRC Technical description Design The DRC is a complete, rectangular displacement unit with rounded corners. It is designed to stand on the floor. The body consists of side, top and bottom plates and an air distribution plate equipped with a number of adjustable discs. The top plate has a circular inlet for size 200 to 400. Sizes 200-600 and 250-800 have a rectangular inlet spigot. The diffusion plate has an access hatch for access to the duct system. The base plate is equipped with four feet. There are one or more perforated front plates on the front of the body, attached with screws. Sizes 200 and 250 have one front plates. Sizes 315, 400, 200-600 and 250-800 have three front plates. The measuring point is in the top of the displacement unit. Materials and surface treatment The displacement unit is manufactured in galvanized sheet steel and aluminium profiles. It is coated with our pure white standard paint, RAL 9003/NCS S 0500-N. The unit is also available in other standard colours: Dusty grey 7037, white aluminium RAL 9006, jet black RAL 9005, grey aluminium RAL 9007 and white RAL 9010. Special versions In addition to the standard sizes, these displacement units are available in special dimensions, with reinforced front plates etc. Please contact your nearest sales office for further information. Commissioning The measurement outlet is placed on the top of the displacement unit. The k-factor of the unit is included in the product marking. The k-factor can also be found at www.swegon.com in the relevant k-factor guide. It is recommended that the a measurement unit and commissioning is used to regulate the air flow. This should be placed at least 3 - 4 duct diameters away from the displacement unit inlet. See Figure 1. Accessories Plinth plate: DRCT 2 - for the aesthetic concealment of the space between the feet of the unit. Planning K-FACTOR It is possible to modify the affected area by adjusting the deflectors behind the front plate. This does not affect the air flow, pressure drop or sound level. This flexibility simplifies any future changes in the furnishings of the room etc. N.B. The sound level in he engineering diagram's is valid at 150 m2 equivalent sound absorption area. This fact makes it important to check the air velocities in the connecting ducts to the terminals. Extra consideration has to be taken on how the ducts can be connected to the terminals. See figure 3. Installation The terminal is placed on the floor and if necessary can be screwed to the wall using angle brackets. See Figure 1. Figure 1. Installation. Commissioning. 2 We reserve the right to alter specifications. 20140107 www.swegon.com DRC Maintenance Table – Duct connections Effects on sound levels (dB) for different duct connections and different air velocities in straight duct section. The displacement unit can be cleaned when necessary using lukewarm water with detergent added. The duct system is accessible by removing the perforated front plate and the access hatch. See Figure 2. Duct connections (values in dB) v (m/s) A B C D 4-5 +2 +6 +3 +3 6-8 +4 + 10 +6 +6 Sound data Sound power level L w (dB) (150 m2 Sabine) Table KOK Size DRC  Mid-frequency (octave band) Hz 63 125 250 500 200 17 18 16 13 10 5 -3 -5 250 14 18 17 13 10 5 -2 -3 315 14 20 18 13 10 3 -4 -4 400 15 18 16 14 10 2 -6 -6 200-600 11 18 18 14 9 1 -8 -8 250-800 11 18 18 15 8 0 -9 -9 Tol. ± 2 2 2 2 2 2 2 2 Sound attenuation DL (dB) (150 m2 Sabine) Table DL Figure 2. Maintenance. Size • Sound level dB(A) applies to rooms of 150 m2 equivalent absorption area, measured 2 m from the displacement unit and with at a straight section without disturbance on straight duct section. • Recommended maximum under temperature 6 K. • To calculate the width of the spread pattern, air velocities in the zone of occupation or sound levels in rooms with other dimensions, please refer to our calculation programme ProAir web, which is available for download at www.swegon.com.   Mid-frequency (octave band) Hz DRC 63 125 250 500 200 15 12 6 2 1000 2000 4000 8000 2 3 5 4 250 13 10 5 2 2 3 4 5 315 12 9 4 1 0 1 2 2 400 10 6 4 1 1 1 1 1 200-600 8 4 1 0 0 0 0 0 250-800 6 3 1 0 0 0 0 0 Tol. ± 2 2 2 2 2 2 2 2 Figure 3. E.g. of how different duct connections affects the sound level of the terminal. We reserve the right to alter specifications. 20140107 www.swegon.com 3 DRC Sizing 1000 2000 4000 8000 DRC Engineering graphs Air flow – Pressure drop – Sound level – Affected area • The graphs present data for sound levels in a room with an equivalent absorption area of 150 m2 and measured 2 m from the displacement unit and with at a straight section without distrurbance on straight duct section. See Figure 3 for how different duct connetions will affect the sound level. • At the equivalent room absorption area of 10 m2 and at 2 m from the unit, the noise level increases approx. by 10 dB(A). • The affected area refers to a displacement unit installed next to a wall, 100 mm on the floor. The affected area distance is related to the isovel limit of 0.2 m/s at Dt 3 K. • The graphs are not to be used for commissioning. • ∇ = min. air flow to obtain sufficient commissioning pressure. • The dB(C) value is normally 6-9 dB higher than the dB(A) value. • For Dt = 6 K the measurements a0,20 and b0,20 are increased by approx. 20%. DRC 200 (150 m2 Sabine) 200 Figure 4. Affected area. DRC 250 (150 m2 Sabine) pt Pa pt Pa 40 dB(A) 100 40 dB(A) 100 35 35 30 50 40 30 30 50 40 30 25 20 25 20 20 20 10 10 5 4 100 300 200 400 300 500 400 l/s 500 5 4 3 100 3 1000 m /h 200 400 a0,2 m 300 500 400 1000 l/s 2000 1000 3 m /h a0,2 m 1 2 3 4 5 2 b0,2 m 3 4 5 10 b0,2 m 2 3 4 5 10 ∆ t -3° DRC 315 (150 m2 Sabine) 2 3 4 5 ∆ t -3° pt Pa 40 dB(A) 100 100 40 dB(A) 35 30 50 40 30 20 20 20 10 10 200 300 400 500 1000 1000 2000 3000 3 4 5 30 25 20 5 4 3 200 l/s 300 4000 m3/h a0,2 m 2 35 50 40 30 25 5 4 3 10 DRC 400 (150 m2 Sabine) pt Pa 400 500 1000 1000 2000 3000 4000 l/s 2000 5000 m3/h a0,2 m 10 3 b0,2 m 4 5 10 20 b0,2 m 2 4 500 3 4 5 We reserve the right to alter specifications. 10 ∆ t -3° 2 20140107 3 4 5 10 ∆ t -3° www.swegon.com DRC DRC 200-600 (150 m2 Sabine) DRC 250-800 (150 m2 Sabine) pt Pa pt Pa 100 100 40 dB(A) 35 50 40 30 25 20 20 40 dB(A) 50 40 30 30 35 30 25 20 10 20 10 5 4 3 200 300 400 500 1000 1000 2000 3000 l/s 4000 5 4 3 300 2000 400 500 3 5000 m /h 1000 2000 a0,2 m 3000 4000 2000 l/s 3000 3 5000 m /h a0,2 m 2 3 4 5 10 20 3 b0,2 m 4 5 10 20 30 b0,2 m 2 3 4 5 10 2 ∆ t -3° 3 4 5 10 ∆ t -3° Dimensions and weights Size A B C ØD E FxG H Weight (kg) 200 600 1200 300 200  115 – 0 25 250 600 2000 350 250 140 – 0 43 315 1200 2000 415 315  173 – 0 80 400 1200 2000 500 400 215 – 0 83 200-600 1200 2000 300 – 115 200x600 55 75 250-800 1200 2000 350 – 140 250x800 55 78 DRC with circular duct connection has a spigot for a duct joint. DRC Figure 5. DRC 200 to 400. Figure 6. DRC 200-600, 250-800. 110 A C Figure 7. Plinth plate DRCT 2. We reserve the right to alter specifications. 20140107 www.swegon.com 5 DRC Order key Specification example Product Rectangular displacement unit with a circular duct connection DRC e -aaa Version Size: 200 250 315 400 Rectangular displacement unit with rectangular duct connection DRC e -aaa -bbb SD XX Swegons VARIZON® rectangular displacement unit of type DRC, having the following functions: • • • • • • Adjustable spread pattern and affected area Exchangeable front sections Non-fouling Air volume measuring point Cleanable Powder painted in white, RAL 9003/NCS S 0500-N Version Size: Accessories: 200-600 250-800 Accessories Plinth plate DRCT 2 a Plint plate: DRCT 2a aaa - (bbb) xx items Size: DRCe aaa - bbb xx items -aaa -bbb Version Size: 6 200 250 315 400 200-600 250-800 We reserve the right to alter specifications. 20140107 www.swegon.com