LAQ Return air diffuser PERFORMANCE DATA NW 310 / 400 / 500 / 600 / 625 Air volumes at 35 db(a) from 350 m³/h to 1090 m³/h Air volumes at 35 db(a) from 97 l/s to 303 l/s SPECIAL FEATURES suitable for return air only three models: o fixed faceplate with clip mounting (-KM) o faceplate detachable via central screw (-VM) o faceplate hinged on one side via click mounting, engaging (-CM) SCHAKO Ferdinand Schad KG Telefon 0 7463-980-0 Steigstraße 25-27 Fax 0 7463-980-200 D-78600 Kolbingen www.schako.de info@schako.de
Table of Contents TABLE OF CONTENTS Description... 3 Performance data... 3 Areas of application... 3 Construction... 3 Model... 3 Overview of product versions... 4 Accessories... 4 Dimensions... 5 Dimensions of accessories... 7 Fastening methods... 7 Technical data... 8 Legend... 9 Order code LAQ... 9 Order code SK... 10 Specification text... 11 No return possible Version: 2017-02-16 Page 2
Description Areas of application DESCRIPTION The SCHAKO ceiling return air diffuser LAQ has been developed exclusively for use in return air systems. The square air diffuser consists of a perforated faceplate with plenum box for extraction of the return air from the room. The return air diffuser is suitable for VVS systems with variable volumetric flows. The faceplate is made of sheet steel with high-quality powder coating in the colour RAL 9010 (white). The plenum box is made of galvanised sheet steel and has fixing lugs. The diffusor is firmly connected to the plenum box either via clips (LAQ-F) or with concealed mounting and non-hinged diffuser (LAQ-E) or via concealed screw mounting with hinged diffusor (LAQ-K). For exhaust air purification, LAQ-E and LAQ-K can be equipped with a filter mat (G2-G4). PERFORMANCE DATA AIR THROW PATTERN CEILING exhausting AREAS OF APPLICATION Ceiling return air diffuser with perforated faceplate for the extraction of the return air CONSTRUCTION perforated faceplate - sheet steel painted to RAL 9010 (white, standard) plenum box (-SK-Q) made of galvanised sheet steel, with lateral spigot and fixing lugs faceplate is fastened via clip mounting (-KM), click mounting (-CM) or central screw (-VM) LAQ 310 V AB (m³/h) L WA [db(a)] p t return air (Pa) 290 30 19 350 35 28 400 40 37 LAQ 400 V AB (m³/h) L WA [db(a)] p t return air (Pa) 395 30 16 480 35 24 580 40 35 MODEL LAQ-F Ceiling return air diffuser with fixed faceplate with clip mounting, non-detachable (-KM), not available or not suitable for use with filter mate. LAQ-E Ceiling return air diffuser with faceplate detachable via central screw (-VM), optionally also available with filter mat (G2 - G4). LAQ-K Ceiling return air diffuser with faceplate hinged on one side via click mounting, engaging (-CM), optionally also available with filter mat (G2 - G4). LAQ 500 V AB (m³/h) L WA [db(a)] p t return air (Pa) 680 30 13 820 35 19 990 40 28 LAQ 600/625 V AB (m³/h) L WA [db(a)] p t return air (Pa) 920 30 13 1090 35 18 1295 40 25 Performance data without filter mat No return possible Version: 2017-07-10 Page 3
Overview of product versions Accessories OVERVIEW OF PRODUCT VERSIONS LAQ-F- ACCESSORIES Filter mat (G2 to G4, not for LAQ-F) Concealed mounting (-VM) Damper (-DK1) Rubber lip seal (-GD1) Volumetric flow meter (-VME1) with ROB model (-ROB1) Box insulation outside (-Ia) Box insulation inside (-Ii) LAQ-E- LAQ-K- No return possible Version: 2017-07-10 Page 4
Dimensions DIMENSIONS LAQ-F- available sizes NW A E ød KHS GH EBÖ 310 308 305 198 300 310 310 400 398 395 198 300 310 400 500 498 495 248 350 360 500 600 598 595 298 400 410 600 625 623 620 298 400 410 625 LAQ-E- available sizes NW A E KHS ød R T 310 308 290 300 198 8 12 400 398 370 300 198 12 12 500 498 470 350 248 12 12 600 598 570 400 298 12 12 625 623 570 400 298 24 12 EBÖ = installation opening All dimensions in mm No return possible Version: 2017-07-10 Page 5
Dimensions LAQ-K- available sizes NW A E KHS ød R T 310 308 290 300 198 8 12 400 398 370 300 198 12 12 500 498 470 350 248 12 12 600 598 570 400 298 12 12 625 623 595 400 298 12 12 ARRANGEMENT OF SPIGOTS Arrangement - SO = 1 spigot from above Arrangement - S1 = 1 lateral spigot on the box (STANDARD) Arrangement - S2 = 2 lateral spigots on the box, offset by 90 Arrangement - S3 = 2 lateral spigots on the box, offset by 180 KHS= standard height of plenum box Special height of plenum box = ød + 102mm, but at least 200mm Arrangement S5 = 2 lateral spigots, arranged next to each other No return possible Version: 2017-07-10 Page 6
Dimensions of accessories Fastening methods DIMENSIONS OF ACCESSORIES Damper (-DK1) Insulation for plenum box external (-Ia) External insulation recessed on the fixing lugs. Rubber lip seal (-GD1) Detail X internal (-Ii) Volumetric flow meter (-VME1) FASTENING METHODS LAQ-F Number of 2 2 1 Up to NW400 two steel clips on each side 1.) one steel clip per side with NW500 2.) two steel clips per side from NW600 No return possible Version: 2017-07-10 Page 7
Technical data Fastening methods TECHNICAL DATA Filter mat pressure loss Initial pressure loss at 1m/s: G2 14Pa G3 19Pa G4 19Pa Recommended end pressure loss 250 Pa. LAQ- -500- Pressure loss and noise level (without filter mat) LAQ- -310- LAQ- -400- LAQ- -600/625- No return possible Version: 2017-07-10 Page 8
Legend Order code LAQ LEGEND A = diffuser dimension E = plenum box dimension D = diameter KHS = Height of plenum box EBÖ = installation opening V AB [m³/h] [l/s] = return air volumetric flow p t [Pa] = pressure loss L WA [db(a)] = A-weighted sound power level ρ [kg/m³] = air density Gr [mm] = diffuser size ORDER CODE LAQ 01 02 03 04 05 06 Type WQA Model Nominal size Material Paint Filter mat Example LAQ -F -500 -SB -9010 -G0 Order example LAQ-F-500-SB-9010-G0 Ceiling return air diffuser type LAQ permanently mounted diffuser NW 500 faceplate made of sheet steel faceplate painted to RAL 9010 without filter mat Order details 01 - Type LAQ = ceiling return air diffuser LAQ 02 Model F = permanently mounted diffuser (standard) with clip mounting (-KM) E = removable diffuser with concealed mounting (-VM) K = hinged diffusor with click mounting (-CM) 06 Filter mat (not for LAQ-F) G0 = without filter mat (standard) G2 = with filter mat - filter class G2 G3 = with filter mat - filter class G3 G4 = with filter mat - filter class G4 03 Nominal size 310 = NW310 400 = NW400 500 = NW500 600 = NW600 625 = NW625 04 - Material SB = sheet steel, painted (standard) 05 Paint 9010 = RAL colour 9010 (white) (standard) xxxx = RAL colour can be freely selected (specify colour) No return possible Version: 2017-07-10 Page 9
Order code SK Order code LAQ ORDER CODE SK 01 02 03 04 05 06 07 08 Plenum box Model Air diffuser Type of air Nominal Fastening Material Damper size Example SK -Q -20 -A -500 -KM -SV -DK1 09 10 11 12 13 14 15 Rubber lip seal Volumetric ROB model Insulation Height of plenum Spigot diameter Spigot position flow meter box -GD1 -VME0 -ROB0 -I0 -KHS -SDS -S1 Sample SK-Q-20-A-500-KM-SV-DK1-GD1-VME0-ROB0-I0-KHS-SDS-S1 Plenum box, square design I for square diffusers air diffuser LAQ-F return air NW 500 clip mounting galvanised sheet steel with damper with rubber lip seal without volumetric flow meter without ROB model without insulation standard height of plenum box standard spigot diameter spigot position S1 Order details 01 - Type SK = plenum box, square design 02 Model Q = for square air diffusers 03 - Air diffuser (must be ordered separately) 04 = suitable for LAQ-E/LAQ-K 20 = suitable for LAQ-F 04 - Air throw A = return air (standard) 05 Nominal size 310 = NW310 400 = NW400 500 = NW500 600 = NW600 625 = NW625 06 - Fastening KM = clip mounting (standard, only for LAQ-F- ) VM = concealed mounting (standard for LAQ-E-..., not for LAQ- F- and LAQ-K-...) CM = click mounting (diffuser foldable, not removable, only for LAQ-K-...) 07 - Material SV = Galvanised sheet steel (standard) 08 Damper DK0 = without damper (standard) DK1 = with damper 09 - Rubber lip seal GD0 = without rubber lip seal (standard) GD1 = with rubber lip seal 10 Volumetric flow meter VME0 = without volumetric flow meter (standard) VME1 = with volumetric flow meter 11 ROB model ROB0 = without ROB model (standard) ROB1 = with ROB model (not possible for -KM) 12 Insulation I0 = without box insulation (standard) Ii = with box insulation inside Ia = with box insulation outside 13 Height of plenum box KHS= standard height of plenum box xxx = Height of plenum box in mm (height min = spigot diameter + 102 mm, but at least 200 mm) 14 Spigot diameter SDS = spigot diameter (standard) xxx = spigot diameter in mm 15 Spigot position S0 = spigot from above S1= 1 lateral spigot on the box (standard) S2 = 2 lateral spigots on the box, offset by 90 S3 = 2 lateral spigots on the box, offset by 180 S5 = 2 spigots arranged next to each other No return possible Version: 2017-07-10 Page 10
Specification text Order code LAQ SPECIFICATION TEXT Ceiling return air diffuser type LAQ Perforated return air diffuser for use in return air systems. The diffusor is suitable for extraction of the room exhaust air. The ceiling return air diffuser is suitable for VVS systems with variable volumetric flows. - The faceplate is made of sheet steel with high-quality powder coating in the colour RAL 9010 (white). The plenum box is made of galvanised sheet steel and has fixing lugs. The diffuser is connected to the plenum box via clip mounting. Product: SCHAKO type LAQ-F - Faceplate is connected to the plenum box via concealed screw mounting. Product: SCHAKO type LAQ-E - Faceplate foldable and permanently connected to plenum box. Product: SCHAKO type LAQ-K Accessories - Diffusor with filter mat (-G2/3/4, not for LAQ-F) - Plenum box made of galvanised sheet steel with lateral spigot (-SK-Q ) - with concealed mounting (-VM) - with click mounting (diffuser foldable, not removable (-CM)) - with damper (DK1) - with rubber lip seal at the connection spigot (GD1) - with volumetric flow meter (-VME1) - with ROB model (-ROB1, not for LAQ-F) - Box insulation outside (-Ia) - Box insulation inside (-Ii) No return possible Version: 2017-07-10 Page 11