T 2.3/7/EN/1 Ceiling diffusers Type DLQL For clear room heights to approximately 4.0 m The art of handling air Contents · Description Description __________________________________ Construction · Dimensions ______________________ Installation __________________________________ Directions of discharge ________________________ Nomenclature ________________________________ Quick selection ______________________________ DLQL...-H for side entry Ceiling diffusers Type DLQL provide a comfortable air conditioning of rooms. The horizontal discharge takes place with high induction, which results in a rapid decay of supply air velocity and temperature differential over a short distance from the diffuser. Diffusers with one to four way discharge allow the best discharge configuration to be selected to match the room geometry and provide acceptable velocities in the occupied zone. The ceiling diffusers are suitable for all types of suspended ceiling systems. The frameless construction ideally blends with the design of the ceiling. For comfort conditioning of the occupied zone the diffusers can be used for room heights up to 4 m. Special characteristics – Face plate made of powder-coated perforated sheet metal – Face plate in various dimensions can be integrated into conventional ceiling systems – Additional blanking plates to provide various air discharge directions 2 2 3 4 5 6 7 Acoustic data Supply air, top entry __________________________ 8 Supply air, side entry ________________________ 9 Extract air ________________________________10 Aerodynamic data ____________________________11 Order Details ________________________________12 DLQL...-V for top entry The ceiling diffusers consist of a sheet metal casing and a face plate made of perforated sheet metal. The construction with the side entry spigot is achieved using an additional universal plenum box. Supply air diffusers have a baffle plate on the rear of the perforated face plate. Construction · Dimensions Characteristics – For supply or extract air – Side or top entry spigot – Recommended supply air temperature difference up to ±10 K Construction features – Face plate made of perforated sheet metal for fitting into T-bar ceilings (T) or central fixing screw fastening for installation into grid or plasterboard ceilings (P) – Supply air construction with baffle plate – Spigot connection suitable for circular ducts according to EN 1506 or EN 13180 – Option with groove for lip seal – Additional blanking plates to provide various air discharge directions DLQL...-H Materials – Face plate made of galvanised perforated sheet steel, casing made of galvanised sheet steel – Baffle plate made of acoustic non woven composite material – Casing painted black (RAL 9005) – Face plate powder-coated white (RAL9010) Plenum box The DLQL...-H construction has an additional universal plenum box with side entry spigot. – Plenum box suitable for DLQL – Plenum box and flow rate control damper made of galvanised sheet steel – Control damper for flow rate balancing (optional) – See leaflet 2/16.4/EN/... for dimensions and technical data DLQL...-V □K Ø9.5 □B Slot 6.4 × 11.4 ØD2 H2 50 H1 ØD1 C 50 □Q¹ Nominal size 250 300 400 500 600 P² □Q □Q¹ Dimensions in mm T² □K □B C ØD1 ØD2 111 158 158 248 593 216 198 111 398 593 372 354 131 298 498 598 593 593 593 8 □Q 8 □Q 290 476 590 272 458 572 156 189 158 198 248 313 ¹ For P and T constructions the face plate size can be up to a max. of 623 mm ² Other dimensions for □Q insert into item8 of order code H1 H2 258 34 123 258 198 303 248 313 353 418 28 44 55 64 Weight in kg DLQL...-H 2.8 4.0 6.5 9.6 13.8 DLQL...-V Plenum box AK 0.9 008 2.0 002 1.2 3.1 4.4 001 010 012 3 Installation The customer must install the ceiling diffusers, make all connections, and provide the hanging system, connection and sealing materials. Only trained expert personnel should install and make the appropriate connections. All legal regulations for site work must be complied with. The plenum box (side entry) has four suspension holes and the casing (top entry) has four hanging brackets for suspending the diffuser from the ceiling slab. Use only certified hanging systems. Installation into grid and plasterboard ceilings The face plate of the ceiling diffuser (DLQL-P) is attached to the casing with a central fixing screw. In the case of large dimensions (above □Q = 500 mm), the face plate is equipped with chamfered corners. Installation into T-bar ceilings The face plate of the ceiling diffuser (DLQL-T) rests on the T-bar or on a similar profile. The casing rests on the back of the face plate but it must be supported separately from the ceiling slab. Installation into suspended ceiling systems Grid ceiling DLQL...-P Suspension holes Hanging bracket DLQL...-H DLQL...-V Ceiling tile Face plate Plasterboard ceiling DLQL...-P Plasterboard ceiling Face plate T-bar ceiling DLQL...-T Ceiling tile placed on T-bar Face plate 4 T-bar Directions of discharge Without blanking plates, the air is discharged horizontally and evenly on all sides (four-way). Alternative air discharge directions can be achieved with blanking plate accessories. A maximum of three blanking plates are placed in the ceiling diffuser. They can be arranged in any manner. Extract air ceiling diffusers have no blanking plates. Directions of discharge Air discharge four way Blanking plate Air discharge three way with one blanking plate Air discharge two way with two blanking plates Air discharge two way with two blanking plates Air discharge one way with three blanking plates 5 Nomenclature Nomenclature Aeff V V₄ in m² : Effective outlet area in l/s and m³/h : Flow rate per diffuser in l/s and m³/h : Flow rate for four way discharge diffuser For three, two and one way discharge enter diagram 11 using the following: three way: V₄ = 1,33 × V two way: V₄ = 2,0 × V one way: V₄ = 4,0 × V a, b in m : Spacing between two diffusers h₁ in m : Distance between the ceiling and the occupied zone l in m : Distance from the diffuser l = x + h₁, l = a ⁄ 2 or l = a ⁄ 2 + h₁ vl in m/s : Maximum time average air velocity at the wall at distance l = x + h₁ or at the ceiling at distance a ⁄ 2 vh1 in m/s : Maximum time average air velocity between two diffusers at distance l = a ⁄ 2 + h₁ ∆tZ in K : Temperature difference between supply and room air ∆th1 in K : Temperature difference between room air and core at distance l = a ⁄ 2 + h₁ ∆tl in K : Temperature difference between room air and core at distance l = x +h₁ ∆pt in Pa : Total differential pressure LWA in dB(A) : A-weighted sound power level LWNC : NC rating of sound power level (LWNC = LWA − 4 dB) Note the noise levels quoted are the dBA rating of sound power level LWA. To obtain typical room levels LPA ≈ LWA − 5 dB. a l V ∆tZ V ∆tZ h₁ vl vh1 ∆th1 b vl ∆tl a 6 x 0.08 m Quick selection Supply air, top entry Vmin Nominal size l/s m³/h 400 16 58 250 300 500 600 Nominal size 6 9 25 36 600 Nominal size 18 73 600 Nominal size 109 600 145 21 121 401 74 265 19 392 159 572 250 l/s 72 300 116 600 431 400 500 209 245 17 m³/h ∆pt 91 328 18 363 120 131 522 56 198 202 430 713 Intake four way V at 35 dB(A) m³/h ∆pt 753 27 260 416 882 1550 24 24 22 16 16 l/s 99 28 164 23 593 21 58 89 288 324 77 105 228 320 69 50 37 33 V at 45 dB(A) 250 300 500 600 6 9 25 36 m³/h ∆pt Nominal size l/s 71 256 36 400 32 45 144 124 162 349 518 55 41 29 29 V at 45 dB(A) 250 300 500 600 13 18 50 73 m³/h ∆pt Nominal size l/s 96 345 32 400 48 58 202 168 209 460 726 48 39 26 27 V at 45 dB(A) 250 300 500 600 l/s m³/h ∆pt Nominal size 116 427 31 400 56 73 151 252 200 261 545 908 V at 45 dB(A) 43 37 25 25 600 400 2136 37 43 Note the noise levels quoted are the dBA rating of sound power level LWA. To obtain typical room levels LPA ≈ LWA − 5 dB. 37 133 29 91 47 24 71 80 85 255 250 300 104 600 385 500 168 229 ∆pt 49 177 51 24 61 22 V at 35 dB(A) 32 94 100 117 218 339 68 57 40 39 V at 45 dB(A) l/s m³/h ∆pt l/s m³/h ∆pt 116 58 210 28 76 274 47 45 30 65 181 36 77 261 117 109 130 32 29 277 24 420 23 Discharge three way V at 35 dB(A) 42 48 100 152 150 173 362 546 62 52 40 39 V at 45 dB(A) m³/h l/s m³/h ∆pt l/s m³/h ∆pt 174 76 272 27 98 352 46 68 98 272 392 36 44 101 158 131 158 29 28 362 23 568 24 Discharge four way 232 91 m³/h 28 Discharge two way 65 l/s V at 45 dB(A) l/s 43 30 167 V at 35 dB(A) l/s m³/h ∆pt 90 324 29 90 42 363 121 131 522 51 190 150 182 435 683 Extract air, side connection 50 1167 ∆pt 22 m³/h 145 m³/h 23 l/s 36 l/s m³/h Vmin 101 1036 56 109 500 300 Nominal size 591 76 25 ∆pt 45 27 250 m³/h 355 19 V at 35 dB(A) 131 Vmin l/s Discharge one way 33 Vmin l/s 128 V at 35 dB(A) 149 16 16 l/s 41 400 47 Discharge four way 90 45 26 23 357 Extract air, top connection Nominal size 17 ∆pt 99 162 97 m³/h 159 45 29 17 V at 35 dB(A) 44 m³/h 35 23 266 123 l/s 28 l/s 272 232 101 400 36 196 111 98 65 500 300 19 55 34 Nominal size 63 ∆pt 90 ∆pt 20 m³/h 34 m³/h 25 239 Vmin m³/h 21 26 Discharge three way l/s 250 168 V at 45 dB(A) l/s 35 V at 35 dB(A) 68 Vmin 76 l/s 74 261 55 Discharge two way 181 174 27 67 65 48 76 400 25 25 m³/h 500 300 120 45 Vmin 19 33 21 131 l/s 250 ∆pt 47 116 50 400 m³/h 91 32 500 300 l/s 15 m³/h 13 V at 35 dB(A) 33 Vmin 250 Discharge one way 23 l/s Supply air, side entry Intake four way V at 35 dB(A) m³/h ∆pt 605 15 327 375 824 1387 27 29 26 26 l/s 28 122 14 304 18 12 145 228 519 50 58 131 204 179 209 471 734 55 49 39 40 V at 45 dB(A) l/s m³/h ∆pt 117 422 48 58 67 157 244 208 239 565 878 V at 45 dB(A) 52 50 44 43 m³/h ∆pt 820 28 438 523 1095 1867 49 35 25 22 7 Acoustic data Supply air, top entry Example 1 Result of selection: ∆pt = 22 Pa (from Diagram 4) LWA = 38 dB(A) (from Diagram 4) Given: Office Room width: 5.60 m Room depth: 2.80 m Room height: 3.00 m Total supply air flow rate to room: 200 l/s (720 m³/h) Two ceiling diffusers, discharge four way, top entry Flow rate per diffuser: 100 l/s (360 m³/h) Required sound power level per diffuser: 40 dB(A) For the aerodynamic data, see the continuation on page 11 Quick Selection: See page 7. DLQL...-V.../400 91 l/s at 35 dB(A) 60 40 80 100 60 80 100 200 l/s m /h 400 3 DLQL...-Z-V, discharge three way Size 250 60 50 300 40 400 600 600 45 50 30 500 30 35 40 Lw in dB(A ) 20 8 7 10 40 25 10 20 60 80 100 40 60 80 100 20 Total differential pressure ∆pt in Pa 80 70 200 200 m /h 400 3 l/s 200 600 300 1000 4 50 45 30 20 10 V 8 7 10 40 60 20 40 80 100 60 80 100 200 m /h 400 3 l/s DLQL...-Z-V, discharge four way 80 70 Size 250 60 50 40 300 400 30 20 10 V 600 500 200 600 600 50 40 20 20 5 10 500 45 25 8 7 6 40 40 10 400 35 4 Lw i n dB 0 (A) 30 Lw in d 35 B(A ) 40 20 50 300 30 45 30 60 25 50 40 600 Size 250 80 70 25 3 Lw 0 35 in d B(A ) 500 DLQL...-Z-V, discharge two way Total differential pressure ∆pt in Pa 50 V 8 400 2 Total differential pressure ∆pt in Pa 80 70 60 V 3 300 Size 250 20 DLQL...-Z-V, discharge one way Total differential pressure ∆pt in Pa 1 8 7 20 80 100 40 60 200 80 100 20 Sound power level and total differential pressure 400 l/s 200 300 600 m /h 1000 3 Acoustic data Supply air, side entry Example 2 LWA = 39 dB(A) (from Diagram 8) Correction according to table 39 dB(A) + 1dB = 40 dB(A) Given: Office Width: 5.60 m, depth: 2.80 m, height: 3.00 m Total supply air flow rate to room: 200 l/s (720 m³/h) Two ceiling diffusers, discharge four way , side entry Take a flow rate control damper setting up to 45° into consideration. Flow rate per diffuser: 100 l/s (360 m³/h) Required sound power level per diffuser: 40 dB(A) Influence of flow rate control damper Correction values for diagrams 5 to 8 Nominal size 200 80 100 m /h 400 3 l/s DLQL...-Z-H, discharge three way 60 50 300 400 500 45 40 600 50 Size 250 600 30 35 Lw in d 40 B(A ) 30 25 20 20 Total differential pressure ∆pt in Pa 80 70 200 10 V 8 7 20 80 100 40 60 200 80 100 m3/h 400 l/s 200 300 600 8001000 +1 ×2 +1 0 0 DLQL...-Z-H, discharge two way Size 250 60 400 500 600 50 50 45 40 30 Lw i 35 nd B(A 40 ) 30 25 20 20 10 V 8 300 8 7 10 40 60 20 40 80 100 60 80 100 200 400 DLQL...-Z-H, discharge four way 80 70 Size 250 300 60 50 400 l/s 500 40 200 600 600 45 80 100 60 +2 30 40 40 ×2 × 1.1 +1 3 in d 5 B(A ) 20 +1 0 0 20 Lw 60 × 1.1 80 70 Total differential pressure ∆pt in Pa 10 ×2 0 ×2 90° 30 25 30 20 6 45° LWA 25 50 45 35 Lw i 40 nd B(A ) 30 40 × 1.1 Total differential pressure ∆pt in Pa 600 20 Total differential pressure ∆pt in Pa 500 40 V 7 400 50 8 7 10 500 90° ×2 × 1.1 600 Size 250 300 60 × 1.1 400 DLQL...-Z-H, discharge one way 80 70 250 300 Sound power level and total differential pressure 5 45° ∆pt 50 Quick Selection: See page 7. DLQL...-H.../400 90 l/s at 35 dB(A) Result of selection: ∆pt = 36 Pa (from Diagram 8) Correction according to table: 36 × 1.1 = 40 Pa 10 V 8 720 80 100 40 60 200 80 100 400 l/s 200 300 600 m3/h 1000 9 Acoustic data Extract air Example 3 Given: Office Extract air flow rate: 200 l/s (720 m³/h) Required sound power level: 40 dB(A) One ceiling diffuser, top connection Quick Selection: DLQL...-V.../400 209 l/s at 35 dB(A) Influence of flow rate control damper Nominal size × 1.4 500 × 2.2 25 10 60 200 80 100 400 200 400 l/s 600 700 600 8001000 m /h 2000 3 +8 + 12 Size 250 40 +4 300 400 500 10 4 40 600 45 20 V + 11 50 30 8 7 6 5 + 14 40 30 35 Lw i n dB (A) 20 × 7.8 + 12 +9 30 35 in d B(A ) 40 30 + 15 +8 Lw 45 40 + 11 × 10.7 DLQL...-A - H 80 70 60 50 90° 25 500 600 10 Total differential pressure ∆pt in Pa 50 400 50 60 8 7 V 40 10 Size 250 300 LWA × 4.0 × 8.6 × 2.6 20 Total differential pressure ∆pt in Pa DLQL...-A - V 45° × 7.5 × 2.1 600 80 70 90° × 2.3 400 9 ∆pt 45° 250 300 Sound power level and total differential pressure Correction values for diagram 10 60 200 80 100 400 20 Result of selection: ∆pt = 26 Pa (from Diagram 9) LWA = 34 dB(A) (from Diagram 9) 200 400 l/s 600 600 800 1000 m3/h 2000 Aerodynamic data Continuation of Examples 1 and 2 Between two diffusers: a⁄2 = 2.8 ⁄ 2 = 1.4 m vl = 0.45 m/s from Diagram 11 vh1 = 0.15 m/s from diagram 13 a ⁄ 2 + h₁ = 1.4 + 1.2 = 2.6 m ∆tl ⁄ ∆tZ = 0.11 from Diagram 12 Given: Spacing between two diffusers: a = 2.8 m Distance between the ceiling and the occupied zone: h₁ = 1.2 m Distance to wall: x = 1.40 m Result of selection: Flow rate for discharge four way V4 = V = 100 l/s At the wall: l = x + h₁ = 1.4 + 1.2 = 2.6 m vl = 0.27 m/s from Diagram 11 ∆tl ⁄ ∆tZ = 0.11 from Diagram 12 Nominal size 250 Aeff 11 300 0.0103 400 0.0140 500 0.0254 600 0.0360 0.0600 Air velocity vl at distance l m No a in ize ls 25 0 30 0 0 40 0 50 60 vl 0 = 80 0. V₄ 20 70 30 100 40 150 60 200 Temperature quotient 80 100 150 200 l/s 300 300 400 500 600 m³/h 1000 13 0.35 0.30 No ∆tl ⁄ ∆tZ or ∆th1 ⁄ ∆tZ 0.20 0.15 25 0.10 0.05 1 30 0 2 0 1 60 0. 40 0. 20 0. 2 3 Distance l (x + h₁ or a ⁄ 2) in m in al 40 siz e 50 0 0 1.0 0.8 0 6 vl 1.2 60 5 2.0 1.6 m 4 Air velocity vh1 between two diffusers h₁ in m 0.25 s m/ 30 0. V min 12 Effective outlet area 0. 3 0.6 0. 4 0. 5 = 0. 0. 8 m 7 /s 0. 6 0.4 3 4 Distance l (x + h₁ or a ⁄ 2 + h₁) in m 5 6 0.2 0.1 0.2 0.3 vh1 in m/s 0.4 0.5 0.6 0.7 11 Order Details Specification text* Sound power level of the air-regenerated noise measured in accordance with EN ISO 5135. Materials Face plate made of galvanised perforated sheet steel; casing, sheet metal covers, plenum box, and flow rate control damper made of galvanised sheet steel. Baffle plate made of acoustic non woven composite material. Face plate powder-coated white (RAL9010) or another colour. Casing painted black (RAL 9005). Black baffle plate. Ceiling diffuser options: – Frameless construction, suited for conventional T-bar ceilings. – Plenum box with flow rate control damper for flow rate balancing – Blanking plates for the configuration of the air discharge directions. Supply air ceiling diffusers with a square perforated sheet metal face plate. Horizontal air discharge with high induction, which results in a rapid decay of supply air velocity and temperature differential over a short distance from the diffuser. Diffusers with one to four way discharge allow the best discharge configuration to be selected to match the room geometry. Special characteristics: – Face plate made of powder-coated perforated sheet metal – Face plate in various dimensions can be integrated into conventional ceiling systems – Additional blanking plates to provide various air discharge directions Frameless construction, suitable for conventional grid and plasterboard ceilings. Consist of a sheet metal casing and face plate made of perforated sheet metal. Construction with side entry also has an additional universal plenum box. Supply air construction with baffle plate. Spigot connection with lip seal for circular connecting ducts according to EN 1506 or EN 13180. * Text for a DLQL for supply air and for grid or plasterboard ceilings, with plenum box for side entry and lip seal. Text for construction variants see our homepage. Order code DLQL - T - Z - H - M - L / 500 / 618 / P1 / RAL 9006 10 ype Ceiling system -P Grid or plasterboard ceiling -T T-bar ceiling entilation system -Z Supply air -A Extract air Subject to change · All rights reserved © TROX GmbH (2/2010) Connection -V Top entry -H Side entry 12 Control damper for flow rate balancing None, no entry required -M With control damper¹ Lip seal None, no entry required -L With lip seal Nominal size 250 300 400 500 600 Surface² 0 Powder-coated, white (RAL 9010, gloss level 50 %)³ P1 Powder-coated RAL ... 10 Colour For P1 only RAL 9006 white aluminium, gloss level 30 % RAL ... other colours, gloss level 70 % Size of face plate Dimensions P or T, no entry required ... Other dimensions ¹ Side entry plenum only ² Colours in RAL CLASSIC collection ³ Combination of white face plate with white baffle plate on request Order example Make: Type: TROX DLQL -P -Z -H -M / 400 / P1 / RAL 9006 Order example: blanking plate Make: Type: TROX DLQL-AB / 400