Linear ceiling diffuser

Transcription

1 L-0--01e Linear ceiling diffuser Type LDD / LDDL

2 Contents Realisation Application Safety instructions Contents Realisation Application Safety instructions Dimensions 3 Dimensions Installation Quick selection Technical Data 5 11 Order details Realisation The linear ceiling diffusers consist of an angular frame with glued-on foam gasket. The removable blade grating is available with one or two-sided discharge. Material Variante 1 Frame and blades of steel profiles, color powder-coated RAL 90, matt 5% brilliance Application The linear ceiling diffusers with one or two-sided discharge are especially suitable for air supply through ceilings. They distribute the air along the ceiling and can be used in very low rooms. The linear ceiling diffusers feature excellent induction. Mixing of the air jets with the room air and thus the heat exchange begin in the immediate neighbourhood of the diffuser. Therefore, warmer and particularly colder air can be supplied without draft effects. The linear ceiling diffusers with removable blade grating provide easy mounting. They look very attractive and warrant for optimum discharge conditions. E = insufflation unilatérale Z = two-sided discharge Variante Frame and blades of light metal sections, anodized colourless finish Holding springs of stainless steel Fully concealed attachment On request, the diffusers are supplied with flow-rate control devices (opposed blade damper, flap casing or plenum box). Safety instructions CAUTION! Risk of injury from sharp edges and corners, ridges and thin-walled sheet metal parts! Proceed carefully with all work. Wear protective gloves, safety shoes and protective helmet. WARNING! Danger from incorrect use. Misuse of the product may lead to dangerous situations. The product must not be used: in areas subject to explosion hazards; in the open air without sufficient protection against weather effects; in atmospheres that may have a damaging and/or corrosive effect on the product due to scheduled or unscheduled chemical reactions. CAUTION! Damage to the product due to improper handling. Check the device for damage and contamination prior to operation! Improper handling may lead to considerable material damage of the product. Do not use any acid or abrasive cleaning agents. Adhesives from sticky tape may lead to colour damage. Excessive moisture may lead to colour damage and corrosion. Use only cleaning agents, greases and oils that are expressly specified.

3 Dimensions Single grilles LDD / LDD L B + 1) H + 1) B H 1) Recess Nominal dimension B = Nominal width H = Nominal height = inner dimensions of frame from behind B + 1) / H + 1) B H 1. 1) for realisation in light metal: B + 5, H + 5 (corner springs) ) for realisation in light metal: 3.5 mm 3) for realisation in light metal: 39 mm 9 3 3) 3 ) 5 B + 0 / H B + 90 / H + 90 Nom. dimens. H one-sided E two sided Z [mm] Quantity of slots LDD E(Z)5 B + / H + H + 9 LDD E(Z) B + / H + H + 3 1) 3 3 1) 7 T 1 1) for realisation in light metal: 3.5 mm B [mm] T [mm] Individual grilles LDD - E 5 (LDD LE 5) or LDD - Z 5 (LDD LZ 5) up to a lenght B of mm are supplied with inclined flap casing. If the lenght B exceeds mm, a parallel flap casing is always supplied. LDD and LDD L - linear air terminals The term 'linear air terminal' refers to LDD or LDD L with a nominal dimension B which exceeds 00 mm, lengths exceeding 00 mm are supplied as partial segments. The dimension B must be divisible by mm. Nominal dimension H see individual grilles. Special model If supply air plenum boxes (pressure boxes) are used, parallel flap casings are supplied for all lengths B. Name 5P. Supply air plenum boxes see prospect L-0--03e. 3

4 Dimensions Installation Quick selection B + 1) H + 1) B H 1) = Recess B, H = Nominal width, nominal height Definitions B, H m Nominal width, Nominal height m³/h Air flow rate /m m³/h/m Air flow rate per m R T m Room depth RH m Room height v eff m/s Eff. discharge velocity (Basis for the values of the table:.7 m/s) Δp s Pa Static pressure drop Δp t Pa Total pressure drop L wa db(a) A-weighted sound power level L w db Linear sound power level P W Cooling capacity L 0.5 m Distance in relation to the final velocities 0.5 m/s Installation see installation description L-0--03e Example given LDD E 0% open Linear ceiling diffuser B H 0 mm Air flow rate 0 m³/h Eff. discharge velocity v eff.7 m/s Room depth R T ca. 7.5 m Static pressure drop Δp s.5 Pa Sound power level L w db(a) for other nom. dimensions consider the correction values (plus or minus-values) Air flow rate /m² ca. m³/h, m² P/m² ca. 7 W/m² (at ΔT = - K) min. distance A m B + (R T * 0.1) «middle to middle linear ceiling diffuser» (in B-direction) Free section of blade grating 35% Sizes of single grilles / Quick selection 1) H [mm] B [mm] / m R T ca. [m] min. R H DT = -K ca. [m] ) 5.0 5) ) 9.0 5) ) 13 5) 3 3) ) ) 0 3) ) For supply air the ceiling must be flat. (Coandaeffect) ) For linear diffusers with nominal dimensions H = 0 mm flap casings are not available (type 5 or 5P). Choice type D / opposed blade damper. 3) The nominal height H > 1 mm are not applicable für supply air with high requirements to the comfort and big cooling charges ) Room depth of LDD...-individual grilles, nominal width B = mm 5) Room depth of LDD...-linear air terminals

5 Sound power level L wa [db(a)] Sound power level L w [db] Effective discharge velocity veff [m/s] p t Hz 5Hz 0Hz [db(lfm)] [db(a)] 00Hz p t p s Pressure drop p s [Pa] p s 00Hz 0% open 75% open % open 5% open v eff 000Hz p t LDD - E/Z 5 1 mm A 0 = m² 000Hz [Pa] [Pa] [Pa] Sound power level LDD 5, one- and twosided discharge, supply air without plenum box Sound power level L wa and pressure drop p t ; p s, LDD E/Z 5, B H = 1 mm, Tolerances: total level ± db, octave level ± db; nom. surface of reference A 0 = m ; sound power level of reference W 0 = - W Example LDD E/Z 5, B x H = 0 mm; v eff = 3 m/s Diagram > L wa = 35 db(a) L w0.135; 5Hz = 33 db; L w0.135; Hz = 0 db a.s.o. Correction L w from table L w 0 = ~1 db L wa 0.09 = 3 db(a) L w0.09; 5Hz = 3 db; L w 0.09; Hz = 39 db a.s.o. ND Correction «diffusor dimension» L w [db] Sound power level L wa [db(a)] Sound power level L w [db] Effective discharge velocity veff [m/s] p t Hz 0Hz Hz [db(lfm)] 00Hz 00Hz [db(a)] 000Hz 000Hz p t p s 0% open 0% offen 75% offen % offen 5% offen LDD - E/Z 1 mm A 0 = m² p s Pressure drop p s [Pa] v eff p t [Pa] [Pa] [Pa] Sound power level LDD, one- and twosided discharge, supply air without plenum box Sound power level L wa and pressure drop p t ; p s, LDD E/Z, B H = 1 mm, Tolerances: total level ± db, octave level ± db; nom. surface of reference A 0 = m ; sound power level of reference W 0 = - W Example LDD E/Z, B x H = 0 mm; v eff = 3 m/s Diagram > L wa = 33 db(a) L w0.135; 5Hz = db; L w0.135; Hz = 3 db usw. Correction L w from table L w 0 = ~1 db L wa0.09 = 3 db(a) L w0.09; 5Hz = 9 db; L w0.09; Hz = 37 db usw. ND Correction «diffusor dimension» L w [db]

6 Linear ceiling diffusers one-sided discharge T 0K : 0.0 RT T 5K : 0. RT TK : 0.1 RT L 0.5 = 0.75 R T v = 0.5 m/s 0.5 R T 1. - m Soil Room depth R T Air flow rate Air flow rate Room depth RT [m] Nominal dimension B H [mm] Effective discharge velocity v eff [m/s]

7 Linear ceiling diffusers one-sided discharge T 0K : 0.0 RT T 5K : 0. RT TK : 0.1 RT L 0.5 = 0.75 R T v = 0.5 m/s 0.5 R T 1. - m Soil Room depth R T Air flow rate Air flow rate Room depth RT [m] Nominal dimension B H [mm] Effective discharge velocity v eff [m/s] 7

8 Linear ceiling diffusers two-sided discharge T 0K : 0.0 RT T 5K : 0. RT TK : 0.1 RT L 0.5 L 0.5 = 0.75 R T v = 0.5 m/s 0.5 R T 1. - m R T Soil Room depth R T Nominal dimension B H [mm] Air flow rate Air flow rate Effective discharge velocity v eff [m/s]

9 Linear ceiling diffusers two-sided discharge T 0K : 0.0 RT T 5K : 0. RT TK : 0.1 RT L 0.5 L 0.5 = 0.75 R T v = 0.5 m/s 0.5 R T 1. - m R T Soil Room depth R T Room depth RT [m] Nominal dimension B H [mm] Air flow rate Air flow rate Effective discharge velocity v eff [m/s] 9

10 Linear ceiling diffusers 'linear air terminal one-sided discharge T 0K : 0.0 RT T 5K : 0. RT TK : 0.1 RT L 0.5 = 0.75 R T v = 0.5 m/s 0.5 R T 1. - m Soil Room depth R T H = 0 H = H = 0 Air flow rate [m³/h, m] Air flow rate [l/s, m] Raumtiefe R T [m] Effective discharge velocity v eff [m/s] H = 1 H = 0 H = Nominal dimension B H [mm]

11 Linear ceiling diffusers 'linear air terminal two-sided discharge T 0K : 0.0 RT T 5K : 0. RT TK : 0.1 RT L 0.5 L 0.5 = 0.75 R T v = 0.5 m/s 0.5 R T 1. - m R T Soil Room depth R T H = 0 H = H = H = 1 Nominal dimension B H [mm] H = Air flow rate [m³/h, m] Air flow rate [l/s, m] H = Effective discharge velocity v eff [m/s] 11

12 Order details Order codes No details for standard products LDD Z 5P 0 -ZK1 / / 0 / 0 / P1 / RAL Type Linear ceiling diffuser LDD = Steel LDDL = light metal E = one-sided discharge Z = two-sided discharge 0 = without damper (Standard) 5 = Supply air with sliding damper 5P = Supply air with parallel sliding damper = Supply air with opposed blade damper 0 = Standard (with screwless mounting) with separately delivered springs Nominal dimension nominal width nominal height RAL matt, 5% brilliance 0 = Standard LDD Powder coated according to RAL 90, mat, 5% brilliance Standard LDDL colourless anodised according to E0-VSA0 1) P1 = Powder coated according to RAL (other RAL colours and brilliance on request) S = anodised according to E0-...(EURAS or VSA- Standard possible, only LDDL) 1) Explanations see L-0--0e 0 = without (Standard) -ZK1 = Plenum box for supply air with inwards bending -AK1 = Plenum box for exhaust air with inwards bending Order details off LDD E 0 / 0 0 / P1 / RAL off LDDL Z 5P / off LDD E 0 -ZK1 / 00 0 / P1 / RAL Text for tendering purposes The linear ceiling diffusers consist of an angular frame with glued-on foam gasket. The removable blade grating is available with one or two-sided discharge. Material Variante 1 Frame and blades of steel profiles, color powder-coated RAL 90, matt 5% brilliance Variante Frame and blades of light metal profiles, anodized colourless finish Option Other RAL colours We reserve the right to make design and shade of colour changes (05/)