Halton DKR Multi-nozzle Ceiling Diffuser Horizontal air supply, vertical air patterns are also possible Supply air pattern can freely be directed in up to four directions or alternatively radially as swirl jet Directional nozzles with two-slot air path efficiently deflect the airstreams Supply air jet velocity is efficiently reduced due to high mixing effect Detachable front plate allows cleaning of the terminal unit and supply ductwork Accessories Balancing plenum with measurement and adjustment functions. MATERIAL AND FINISHING PART MATERIAL NOTE Frame Front panel Galvanised steel Steel Nozzle Polyacetal POM Colour alternatives White RAL 9010 Grey RAL 7040 Black Coupling sleeve Gasket Galvanised steel Rubber compound Finishing Painted White RAL 9010 Special colours available 1
QUICK SELECTION Pa 240 360 480 600 720 960 1200 1440 1680 1920 2400 3000 qv l/s 20 30 40 50 60 80 100 120 140 160 200 250 m 3 /h 72 108 144 180 216 288 360 432 504 576 720 900 DKR-100-300(R4) LpA 19 31 40 47 DPst 6 13 23 36 DPtot 10 22 39 61 Ld - - - - Lmin - - - - L0.2 1,4 2,6 3,8 4,8 DKR-125-300(R4) LpA 26 35 42 48 DPst 10 18 28 41 DPtot 14 25 38 55 Ld - - - - Lmin 1,0 1,6 2,6 3,6 L0.2 2,2 3,0 3,8 4,6 DKR-160-300(R4) LpA 21 29 36 42 51 DPst 10 18 27 40 70 DPtot 11 20 31 45 80 Ld 2,2 3,0 3,4 3,8 4,8 Lmin - - - - - L0.2 2,3 3,6 4,6 5,4 7,2 DKR-160-450(R4) LpA 22 28 38 46 DPst 4 6 11 18 DPtot 8 12 21 32 Ld - - - - Lmin - - - - L0.2 2,4 3,0 3,8 4,8 DKR-200-450(R4) LpA 21 30 37 43 DPst 5 10 15 22 DPtot 8 13 21 30 Ld 2,6 3,0 3,6 4,2 Lmin 1,6 2,8 4,0 5,2 L0.2 3,0 4,0 5,0 6,0 DKR-200-600(R4) LpA 27 34 41 46 DPst 6 9 13 17 DPtot 9 15 21 29 Ld 3,0 3,6 4,0 4,4 Lmin 2,4 3,6 4,6 5,8 L0.2 3,8 4,6 5,6 6,6 DKR-250-450(R4) LpA 26 33 39 44 49 DPst 10 16 23 31 41 DPtot 12 19 27 36 47 Ld 2,4 3,0 3,6 4,2 4,6 Lmin - - - - - L0.2 3,8 5,2 6,4 7,4 8,4 DKR-250-600(R4) LpA 21 28 34 40 45 53 DPst 5 8 11 15 19 30 DPtot 6 10 14 20 26 40 Ld 2,6 3,0 3,4 4,0 4,2 5,0 Lmin 2,0 2,8 3,8 4,8 5,8 7,8 L0.2 3,2 4,2 5,0 5,8 6,6 8,4 DKR-315-600(R4) LpA 24 30 35 39 47 56 DPst 8 11 15 20 31 48 DPtot 9 12 17 22 35 54 Ld 2,4 2,8 3,0 3,4 4,2 4,8 Lmin 2,6 3,6 4,6 5,6 7,4 9,8 L0.2 4,0 4,8 5,6 6,4 8,0 10,0 LpA values presented with room attenuation 4 db (red 10m 2 - sab). When using room attenuation 8 db (red 25m 2 - sab): LpA - 4dB. Pa LpA DPst Supply air cooling capacity, W A-weighted sound pressure level, reduced by total equivalent absorption surface of 10m 2, db(a) red 10m 2 - sab Static pressure drop, Pa DPtot Ld Lmin Total pressure drop, Pa Distance from the supply unit, at which air jet detaches from ceiling, m Minimum distance between central lines of two supply units, m (V3 = 0,25m/s at 1.8m height) L0.2 Isotermal throw length, m when residual velocity of supply air jet 0,2 m/s Room temperature (Tr) = 24 C Supply air temperature (Ta) = 14 C Room height = 2,8 m 2
Function Air is supplied both horizontally and vertically into the space through the front panel of the diffuser. The supply air pattern can be directed radially in the direction(s) desired (1, 2, 3 and 4) by manually rotating the nozzles. Horizontal swirl jet and vertical air patterns can also be achieved by adjusting the nozzles. Direction of the supply air has no effect on the pressure drop or the airflow rate. The recommended maximum air temperature difference between supply and room air is 10 C. The maximum recommended temperature for plastic material is 60 C. ACCESSORIES ACCESSORY CODE DESCRIPTION Balancing plenum TRI For balancing & equalising the airflow and attenuating the duct noise DIMENSIONS NS ØW ØW1 H ØD 100-300 299 256 67 99 125-300 299 256 67 124 160-300 299 256 67 159 160-450 449 406 89 159 200-450 449 406 89 199 250-450 449 406 89 249 200-600 599 519 89 199 250-600 599 519 89 249 315-600 599 519 89 314 ØW1 ØD ØW 8 H 63 3
Installation The diffuser is connected either directly to the duct by screwing or alternatively by riveting to the TRI balancing plenum. ØD1 ØD Direct the flow pattern in the desired directions by individually rotating each nozzle in order to meet the required specification. 7 It is recommended that a safety distance upstream of the diffuser is minimum 3xD. ØW2 DKR (ØD) ØD1 TRI ØW2 H1 Installation with plenum TRI The collar of TRI plenum can be installed either internally in the plenum or externally at the bottom of the plenum. The height of the unit is presented in the table below for the external installation. When the collar is installed internally, the total height H1 is reduced by 60 mm. 100-300 100 TRI-100-100 265 293-343 125-300 100 TRI-100-125 265 293-343 160-300 125 TRI-125-160 265 323-373 160-450 160 TRI-160-160 415 385-435 200-450 160 TRI-160-200 415 385-435 250-450 200 TRI-200-250 415 435-485 200-600 200 TRI-200-200 530 435-485 250-600 250 TRI-250-250 530 499-549 315-600 250 TRI-250-315 530 499-549 The technical performance for the combination of supply air diffuser and TRI plenum is presented separately for the two different installations. See HIT Design software. 4
Adjustment Servicing It is not possible to adjust airflow in the DKR itself. In order to enable airflow adjustment and measurement of airflow rate it is recommended to connect the diffuser to TRI balancing plenum. The supply flow rate is determined by using the MSM measurement and adjustment module. Open the front panel and pass the tubes and control spindle through the plastic nozzle. Replace the front panel. Measure the differential pressure using a manometer. The flow rate is calculated using the formula below. q v = k * p m Each nozzle can easily be removed by pressing the stoppers and then pushing the nozzle through the front panel. Wipe the nozzles and the front panel with a damp cloth. The nozzles are replaced into the front plate by pushing. Replace the front panel. Option with balancing plenum Remove the measurement and adjustment module by pulling gently the shaft; (not the control spindle or measurement tubes!). Wipe the parts with a damp cloth, instead of immersing in water. Remount the measurement and adjustment module by pushing the shaft until the unit meets the stopper. Adjust the airflow rate by rotating the control spindle until the desired setting is achieved. Lock the damper position with a screw. Replace the tubes and spindle in the plenum and replace the diffuser front panel. K factor for installations with different safety distances (D= duct diameter) TRI/S >8XD min 3XD 100 6.0 7.5 125 9.9 12.6 160 16.9 21.9 200 28.3 31.0 250 47.9 51.5 315 78.6-5
Pressure drop, throw pattern and sound data DKR-100-300, DKR-125-300, swirl pattern DKR-160-300, DKR-160-450, swirl pattern DKR-200-450, DKR-200-600, swirl pattern DKR-250-450, DKR-250-600, DKR-315-600, swirl pattern Selection example : Requirements : qv = 100 l/s Selection : DKR-200-600 LpA < 35 db(a) LpA < 34 db(a) L0,2 < 4,0 m L0,2 < 3,8 m Swirl pattern DPtot = 15 Pa Note: Recommended minimum supply temperature, 10 C below room. 6
Pressure drop, throw pattern and sound data DKR-100-300, DKR-125-300, 4-way pattern DKR-160-300, DKR-160-450, 4-way pattern DKR-200-450, DKR-200-600, 4-way pattern DKR-250-450, DKR-250-600, DKR-315-600, 4-way pattern Note: Recommended minimum supply temperature, 10 C below room. 7
SOUND LEVEL DATA DKR qv DPst DPtot F (Hz) LpA NR NC (l/s) (m 3 /h) (Pa) (Pa) 63 125 250 500 1000 2000 4000 [db(a)] DKR-100-300 25 90 9 15 33 26 27 30 23 5 3 25 22 20 29 104 12 20 35 30 32 35 29 13 4 30 27 25 34 122 17 28 37 34 36 40 34 20 12 35 32 31 40 144 23 39 38 37 41 44 40 28 21 40 37 36 DKR-125-300 29 104 9 13 36 26 29 30 22 3 3 25 22 20 34 122 13 17 37 30 34 35 28 11 3 30 27 25 40 144 18 24 38 33 38 40 34 19 7 35 32 30 46 166 25 33 39 37 43 44 39 26 15 40 37 36 DKR-160-300 34 122 13 15 37 26 29 29 24 7 3 25 21 19 41 148 18 21 38 30 33 34 30 16 3 30 26 24 49 176 26 29 39 34 37 38 36 24 11 35 32 30 57 205 36 40 40 37 40 42 41 32 20 40 37 36 DKR-160-450 55 198 5 10 39 33 31 30 19 3 3 25 22 20 63 227 7 13 39 36 36 35 25 10 3 30 27 26 73 263 9 17 40 39 40 40 31 17 7 35 32 31 85 306 13 23 40 42 45 45 37 25 14 40 37 36 DKR-200-450 69 248 7 10 44 30 31 29 22 3 3 25 21 19 81 292 10 14 45 33 35 34 28 11 3 30 26 25 94 338 13 18 46 37 39 39 34 19 7 35 31 30 109 392 18 25 47 40 43 45 39 27 14 40 37 36 DKR-200-600 75 270 5 8 40 32 31 30 19 3 3 25 21 20 87 313 7 11 42 35 36 35 26 9 3 30 27 25 101 364 9 15 43 38 40 40 32 18 6 35 32 30 117 421 12 20 45 40 45 45 38 26 12 40 37 36 DKR-250-450 77 277 10 11 36 28 32 29 22 4 3 25 21 19 91 328 13 15 37 31 35 34 29 13 3 30 26 25 106 382 18 21 38 35 39 39 34 21 8 35 31 30 123 443 24 28 39 38 42 44 40 28 15 40 36 35 DKR-250-600 91 328 6 8 42 31 32 29 21 3 3 25 21 19 105 378 8 11 43 34 36 34 26 8 3 30 26 25 122 439 11 15 44 37 40 40 32 16 4 35 32 31 141 508 15 20 45 40 44 45 38 24 7 40 37 36 DKR-315-600 103 371 8 9 43 28 31 29 21 3 3 25 21 19 121 436 11 13 44 32 35 35 28 10 3 30 27 25 140 504 15 17 45 35 38 40 34 18 5 35 32 30 163 587 20 23 45 38 42 45 39 26 10 40 37 36 LpA values presented with room attenuation 4 db (red 10m 2 - sab). When using room attenuation 8 db (red 25m 2 - sab): LpA - 4dB. NR/NC noise criteria ATTENUATION DATA DL[dB] f[hz] 63 125 250 500 1000 2000 4000 8000 DKR-100-300(R4) 29 24 16 10 16 10 10 9 DKR-125-300(R4) 28 22 16 9 14 12 10 10 DKR-160-300(R4) 25 20 14 9 11 11 10 10 DKR-160-450(R4) 26 20 12 10 12 8 9 9 DKR-200-450(R4) 24 17 12 8 11 8 9 9 DKR-200-600(R4) 25 17 11 10 9 8 9 9 DKR-250-450(R4) 22 16 11 7 11 8 10 10 DKR-250-600(R4) 22 16 10 8 9 9 10 10 DKR-315-600(R4) 20 14 9 7 9 9 10 10 8
Suggested Specifications The diffuser shall be made of painted steel with a white (RAL 9010) standard colour. Air is supplied through plastic nozzles, which shall have a two-slot design in order to ensure efficient mixing of supply air. Nozzles shall be individually adjustable to provide high flexibility for the adjustment of the throw pattern. Option 1; no balancing plenum The diffuser shall have a hot galvanised steel frame with a spigot with integral gasket for connection to circular duct. The diffuser shall have a detachable perforated front panel that provides access to the duct. Product Code DKR-D-A D = Diameter of duct connection 100, 125, 160, 200, 250, 315 A = Diffuser size D=100: 300 D=125: 300 D=160: 300, 450 D=200: 450, 600 D=250: 450, 600 D=315: 600 Specifics and accessories Option 2; option with balancing plenum The diffuser shall be connected to a balancing plenum equipped with a measurement and adjustment module. The diffuser shall have a detachable front panel that provides access to the measurement and adjustment module in the plenum. The balancing plenum shall have a spigot with integral gasket for air-tight duct connection. The balancing plenum shall comprise sound attenuation material made of polyester fiber with a washable surface. CO = Colour W White X Special colour Code example DKR-100-300, CO=W Sub products TRI Plenum (Diffusers) 9