NORDdiffuser Diffusers

Transcription

1 NORDdiffuser Diffusers

2 0 NORDdiffuser Contents DSS Supply air valve DSE Exhaust valve DVP Supply air valve DVS Exhaust valve SFU Supply air valve DKC Ceiling diffuser DKA Ceiling diffuser 0 DSK-P Supply air diffuser DEN Supply air diffuser DDR Supply air diffuser DPR Whirl diffuser DSP Jet pipe SKD Plenum box SKDM Plenum box DEK Ceiling diffuser DKU Ceiling diffuser

3 DSS Supply air valve Air valve for supply air for offices and homes. Structure and dimensions Manufactured of galvanized steel and coated white (RAL 00). The valve has a foam seal and a threaded spindle for easy regulation and locking of the desired airflow. Comes with a sector plate for choosing the desired diffusion pattern. Size ØD A C Weight, kg , 0 0, , A D C Technical data 0 DSS 00 Pressure drop pt (Pa) Air throw L 0, 0 0 DSS 00 with sector plate Pressure drop pt (Pa) Air throw L 0, 0 0 NORDdiffuser DSS L pa, db(a) Air flow q v (l/s) L pa, db(a) Air flow q v (l/s) Images are for illustrative purposes We reserve the right to make changes

4 DSS Pressure drop pt (Pa) L pa, db(a) 0, m,0 m,0 m Air throw L 0, Air flow q v (l/s) 0 DSS with sector plate Pressure drop pt (Pa) Air throw L 0,,0 m, m,0 m, m L pa, db(a) Air flow q v (l/s) 0 0 DSS 0 Pressure drop pt (Pa) , m Air throw L 0,,0 m, m,0 m 0 0 DSS 0 with sector plate Pressure loss pt (Pa) Air flow L 0,, m,0 m, m,0 m L pa, db(a) Air flow q v (l/s) L pa, db(a) Air flow q v (l/s) NORDdiffuser DSS Product codes DSS Ød Product Diameter Example: DSS 00 Accessories d d RLT Socket RLL Socket Product Ød ØD Weight Product Ød ØD Weight RLT 00 0, RLL 00 0, RLT 0 0, RLL 0 0, RLT 0 0, RLL 0 0,

5 Acoustic data, measurement and regulation of air flow Measurement of air flow through pressure differential measured with a separate measuring device. Regulation by adjusting control s. DSS 00 a, mm k-value,,,,0, DSS a, mm k-value,,,,, DSS 0 a, mm k-value,,,, 0, a DSS 00 (with sector plate) a, mm k-value,,,,, DSS (with sector plate) a, mm k-value,,,,, DSS 0 (with sector plate) a, mm k-value,,,,, q v =k p m Installation Saddle RLT or RLL is attached to duct or part with rivets. The valve is threaded into the frame until fixing springs lie stably on the threads. Measurement and regulation of air flow Measurement of air flow through pressure differential measured with a separate measuring device. Regulation by adjusting control s. 0 NORDdiffuser DSS Images are for illustrative purposes We reserve the right to make changes

6 DSE Exhaust valve Exhaust valve for wall and ceiling installation. Available in sizes Ø mm. Structure and dimensions Manufactured of galvanized steel and coated white (RAL 00). The valve has a foam seal and a threaded spindle for easy regulation and locking of the desired airflow. Comes with a sector plate for choosing the desired diffusion pattern. Size ØD A Weight, kg , 0, 0 0, , A D s (mm) 0 Technical data NORDdiffuser DSE DSE 00 Pressure Painehäviö drop pt p (Pa) t (Pa) DSE Pressure Painehäviö drop pt p (Pa) t (Pa) L pa, db(a) Air Ilmavirta flow q v (l/s) q v (l/s) L pa, db(a) Ilmavirta Air flow q v v (l/s)

7 DSE 0 DSE Pressure Painehäviö drop p pt t (Pa) Pressure Painehäviö drop pt p t (Pa) Air flow Ilmavirta q v (l/s) q v (l/s) Product codes DSE Product Example: DSE 00 Accessories Ød Diameter L pa, db(a) L pa, db(a) Air Ilmavirta flow qq v v (l/s) (l/s) d d RLT Socket RLL Socket Product Ød ØD Weight Product Ød ØD Weight RLT 00 0, RLL 00 0, RLT 0 0, RLL 0 0, RLT 0 0, RLL 0 0, Installation Saddle RLT or RLL is attached to duct or part with rivets. The valve is threaded into the frame until fixing springs lie stably on the threads. 0 NORDdiffuser DSE Images are for illustrative purposes We reserve the right to make changes

8 Acoustic data, Measurement and regulation of air flow Measurement of air flow through pressure differential measured with a separate measuring device. Regulation by adjusting control s. DSE 00 a, mm - - k-value 0,,0,,, DSE a, mm k-value 0,,,0,, +a -a DSE 0 a, mm k-value,,0,,,, DSE 00 a, mm k-value,0,,,,, q v =k p m 0 NORDdiffuser DSE

9 DVP Supply air valve For systems with low air flows. Structure and dimensions Manufactured of galvanized steel and coated white (RAL 00). The vent body includes an elastic foam seal. A Size ØA ØB ØC ØE L L Weight, kg , 0 0, 0 0, , , L B L C E Technical data DVP 00 DVP 0 NORDdiffuser DVP Images are for illustrative purposes We reserve the right to make changes

10 DVP 0 DVP 00 DVP 0 0 NORDdiffuser DVP Product codes DVP Ød Product Diameter Example: DVP

11 Installation Installation to duct using a mounting frame (included). Measurement and regulation of air flow Measurement of air flow through pressure differential measured with a separate measuring device. Regulation by opening or closing by turning the plate. K-value a, mm 0 DVP 00,,0,0,,0 DVP,0,,0,,0, DVP 0,0,0,0,0,, DVP 00,0,0, 0,,00,0, DVP 0,,0 0,0,,,0 0,, a q v =k p m 0 NORDdiffuser DVP Images are for illustrative purposes We reserve the right to make changes

12 DVS Exhaust valve DVS exhaust valve is suitable for ventilation systems with small air volumes. Structure and dimensions Manufactured of galvanized steel and coated white (RAL 00). The vent body includes an elastic foam seal A L Size ØA ØB ØC ØE L L Weight, kg , 0 0, 0 0, , , L B C E 0 Technical data NORDdiffuser DVS DVS 00 DVS

13 DVS 0 DVS 00 DVS 0 0 Product codes DVS Ød Product Diameter Example: DVP 00 NORDdiffuser DVS Images are for illustrative purposes We reserve the right to make changes

14 Installation Installation to duct using a mounting frame (included). Measurement and regulation of air flow Measurement of air flow through pressure differential measured with a separate measuring device. Regulation by opening or closing by turning the plate. -a +a K-value a, mm DVS 00 0, 0,0,0,0,0,,, DVS 0,0,,,0,0,00,,00,0 DVS 0,0,,00,0,0,,,,0 DVS 00,,0,,,,0,, 0,00 DVS 0,,,0, 0,0 0,,,,0 q v =k p m 0 NORDdiffuser DVS

15 SFU Supply-/exhaust air valve SFU sissepuhke-, väljatõmbeplafoonid on sobivaimad kasutamiseks büroo- ja eluruumides. Plafoonid on mõeldud paigaldamiseks lakke või seinale. Reguleeritav rõhukadu Mürasummutava plaadiga Paigaldus otse torusse/osasse Plafoone on saadaval diameetriga Ø Konstruktsioon ja mõõdud SFU plafoonid on valmistatud lehtmetallist ja kaetud valge pulbervärviga (RAL 00). Ventiili korpuses on vahtkummist tihend. Keermestatud võlli abil on plafoon kergesti reguleeritav. Nimimõõt ØD A Kaal, kg 00, 0, 0,0 00, d D A Tehnilised andmed 0 Sissepuhe SFU 00 Pressure Rõhukadu drop pt p (Pa) t (Pa) Pressure Rõhukadu drop pt (Pa) p t (Pa) SFU a NORDdiffuser SFU L WA db(a) Air Õhuhulk flow q v (l/s) q v (l/s) L WA db(a) Õhuhulk Air flow q v v (l/s) Images are for illustrative purposes We reserve the right to make changes

16 SFU 0 SFU Pressure Rõhukadu drop pt p (Pa) t (Pa) L WA db(a) Air Õhuhulk flow q v (l/s) q v (l/s) Väljatõmme 0 Pressure Rõhukadu drop pt p (Pa) t (Pa) Õhuhulk Air flow q v (l/s) 0 L WA db(a) SFU SFU 00 Pressure Rõhukadu drop pt p (Pa) t (Pa) Pressure Rõhukadu drop pt p (Pa) t (Pa) NORDdiffuser SFU Pressure Rõhukadu drop pt p (Pa) t (Pa) L WA db(a) Air Õhuhulk flow q v (l/s) q v (l/s) SFU L WA db(a) Air Õhuhulk flow q v (l/s) q v (l/s) Pressure Rõhukadu drop pt (Pa) p t (Pa) L WA db(a) Õhuhulk Air flow q v (l/s) SFU Õhuhulk Air flow q v (l/s) 0 L WA db(a)

17 Markeerimine SFU Tähis Näidis: SFU 00 Ød Toruühenduse mõõt Paigaldus SFU plafoon paigaldatakse otse torusse/osasse. Selleks surutakse plafoon torusse/osasse. Plafoon lukustub ise kinnituskalmbrite abil torusse ega vaja täiendavat kinnitamist. Õhuhulga mõõtmine ja reguleerimine Õhuhulkade mõõdistamist teostatakse rõhuvahede mõõtmisega mõõtekonksu abil. Õhuhulkasid reguleeritakse asendi a muutmisega. SFU 00, sissepuhe a, mm k-arv,0,0, d D A SFU, sissepuhe a, mm k-arv,,0,0,0, SFU 0, sissepuhe a, mm k-arv,0,,0,,0 a SFU 00, sissepuhe a, mm k-arv,,0,0,,0 q v =k p m SFU 00, väljatõmme a, mm k-arv,0,,00,,0 SFU, väljatõmme a, mm k-arv,,0,0,0, SFU 0, väljatõmme a, mm k-arv,,00,0,0, SFU 00, väljatõmme a, mm k-arv,0,0,,,0 0 NORDdiffuser SFU Hooldus Seadme puhastamiseks eemaldada plafoon. Nähtavad pinnad puhastada niiske lapiga. Asetada plafoon tagasi endisesse asendisse. Images are for illustrative purposes We reserve the right to make changes

18 DKC Ceiling diffuser Round ceiling diffuser. Features: horizontal or vertical air jet suitable for over- or under-heated supply air installation in ceiling or free hanging duct sizes Ø 00,0-00 mm Material and finish Manufactured of aluminium steel and coated white (RAL 00). Measurements A d Nominal size d E C h H A H h E C 0 NORDdiffuser DKC Technical data Acoustic data Pressure Painehäviö drop pt p (Pa) t (Pa) Air Ilmavirta flow q v q(l/s) v (l/s) Product codes L pa, db(a) Throw Pressure Õhujoapikkus drop L0, p (m) t (Pa) Õhuhulk Air flow q v q(l/s) v (l/s) DKC Product Ød Duct connection Example: DKC 00

19 Installation Remove the inner cone. Attach the outer cone to duct or plenum box with rivets. Replace inner cone and adjust for position which gives the desired air flow and diffusion pattern. Maintenance Remove the inner cone by turning counter-clockwise. Clean surfaces with damp cloth. Replace inner cone in its original position. N.B. Measure and note inner cone s original position. 0 NORDdiffuser DKC Images are for illustrative purposes We reserve the right to make changes

20 DKA Ceiling diffuser Ceiling diffuser with adjustable air jet pattern. Horizontal or vertical supply air pattern chosen by turning the cone. Features: Horizontal or vertical air jet Installation in ceiling or free hanging Duct sizes Ø 00, 0-0 mm Max. t=0 C Material and finish Manufactured of aluminium sheet and coated white (RAL 00). Measurements Size Ød ØE ØC h H ØD H h D d E C 0 Technical data For adjustment 0, with inner and outer cones on same level. NORDdiffuser DKA Painehäviö pt (Pa) Pressure drop p t (Pa) L pa, db(a) Air Ilmavirta flow q q v v (l/s) 0

21 Throw Horizontal jet Heittopituus Throw L L0, 0, (m) Vertical jet Heittopituus Throw L0, L (m) 0, (m) Air Ilmavirta flow qq v v (l/s) Ilmavirta Air flow qq v v (l/s) Acoustic data Sound level correction factor K okt [db] Sound level correction factor L [db] Size Size Tol. ± Tol. ± L w =L A0 + K okt 0 Product codes DKA Ød Product Diameter Example: DKA 00 NORDdiffuser DKA Images are for illustrative purposes We reserve the right to make changes

22 DSK-P Diffuser for supply air Wall-mounted diffuser for supply air. Product is designed for use in residential houses and other premises where airflows are low and air distribution is from the wall. DSK-P 00 and DSK-P diffusers fulfill Finnish building code E:00 and Ministry of Environment type approval regulations (00) for smoke throttling element, when installed on the wall or on the end of a horizontal duct. Features: Low noise level Draftless air supply Easy installation Removable front plate Suitable for houses, offices and other rooms with low air quantities with supply air on the wall. Structure and dimensions 0 DSK-P-diffuser be composed of two parts: the main body and the front panel. Both details are manufactured of galvanized steel and coated white (RAL 00). Duct connection is equipped with circular rubber gasket. Product Ød A mm Weight, kg DSK-P , DSK-P 0 0, DSK 0 0, 0 A d NORDdiffuser DSK-P Technical data DSK-P 00 Pressure drop P (Pa) 00 Open rows DSK-P Pressure drop P (Pa) Open rows Materjal: 0 0 L pa, db(a) Air flow q v (l/s) L pa, db(a) Air flow q v (l/s)

23 DSK Open rows 0 0 Throw 0 Open rows Pressure drop pt (Pa) L0, (m) Air flow q v (l/s) L pa0, db(a) Air flow q v (l/s) Acoustic data DSK-P 00 Mean octave sound power level: L wokt =L pa +K ,,, 0,, ,,,, ,,, DSK-P Mean octave sound power level: L wokt =L pa +K Adjustment Sound attenuation (db) Correction for octave band K okt (db) Mean frequency of octave band (Hz) Hz Adjustment 0 00 k k k 0 00 k k k k k Sound attenuation (db) Adjustment Correction for octave band K okt (db) Mean frequency of octave band (Hz) Hz Adjust k k k k ment 0 00 k k k k ,, , 0,,, ,, NORDdiffuser DSK-P Images are for illustrative purposes We reserve the right to make changes

24 Product codes DSK-P Product Diameter RAL colour Example: DSK-P Other materials: H - acid-proof steel (standards EVS-EN 00-:0, EN. or AISI ) RAL colour: if other than standard colour (RAL 00, white) Installation Ød RAL 000 Installed directly to duct and fixed to wall with screws or with rivets to duct. Front plate simply pressed in tight against the body. Measurement and regulation of air flow Measurement of air flow as pressure differential measured through a hole in the front plate. Regulation by closing or opening nozzles. Air flow calculated as: q v = k * p m 0 NORDdiffuser DSK-P

25 DEN Diffuser for supply air Features: visible installation duct sizes Ø 00- mm easy to clean low noise level with measuring and regulating device Air jets through the side and perforated front plate. Easily removable front plate makes cleaning easy. Material and sizes Manufactured of galvanized steel and coated white (RAL 00). Round duct connection with rubber gasket. Supply air diffuser with round plenum box for visible installation. Nominal-size Ød ØA B E Weight, kg 00, 0 0,, 0 0 0, 00, 00, 00, 0, 00, Technical data DEN 00 DEN Pressure Painehäviö drop pt (Pa) p t (Pa) Pressure Painehäviö drop pt (Pa) p t (Pa) NORDdiffuser DEN Air Ilmavirta flow q v q(l/s) v Ilmavirta Air flow q v q(l/s) v (l/s) Images are for illustrative purposes We reserve the right to make changes

26 DEN 0 DEN Pressure Painehäviö drop pt (Pa) p t (Pa) Painehäviö pt (Pa) Pressure drop p t (Pa) Air Ilmavirta flow q v q(l/s) v Air Ilmavirta flow q q v v (l/s) DEN 0 DEN Pressure Painehäviö drop pt (Pa) p t (Pa) Pressure Painehäviö drop pt (Pa) p t (Pa) Air flow Ilmavirta q v (l/s) q v (l/s) Air flow Ilmavirta q q v (l/s) v (l/s) 0 NORDdiffuser DEN Product codes DEN Product Diameter RAL colour Example: DEN 00 Ød RAL 000 Colour code: if other than standard colour. Standard colour white RAL 00.

27 l DEK Ceiling diffuser Ceiling diffuser for duct connections Ø mm. Air jets through the side and perforated front plate. Air pattern adjustable between -way and -way by changing sector plates. Features: low noise level removable front plate makes cleaning easy DEK is generally installed with SKDM plenum box. Structure and dimensions Manufactured of galvanized steel and coated white (RAL 00). Round duct connection with rubber gasket. Size Ød A H ØD h l A D d H h Technical data 0 Air flow - pressure drop - sound level Supply air Pressure drop P (Pa) Pressure drop P (Pa) Exhaust air NORDdiffuser DEK 0 0 L pa [db(a)] Air flow q v (l/s) L pa [db(a)] Air flow q v (l/s) Images are for illustrative purposes We reserve the right to make changes

28 Throw 00/ 0 00/0 /00 Throw L0, (m) Air flow q v (l/s) Acoustic data Sound level correction factor K okt [db] Sound attenuation L, db Nominal Hz Nominal Hz size 0 00 k k k k size 0 00 k k k k L w =L A0 + K okt 0 NORDdiffuser DEK Product codes DEK Product Diameter RAL colour Example: DEK 00 Material codes: Ød Standard material galvanized steel (DXD+Z), standard EVS-EN 0:00. Standard colour white RAL 00. H acid-proof steel (standards EVS-EN 00-:0, EN. or AISI ) Zn uncoated galvanized steel RAL colour: if other than standard colour. RAL 000 Accessories: SKDM - plenum box

29 DKU Ceiling diffuser Rectangular ceiling diffuser with perforated front plate. Can also be used as an exhaust unit. Features: horizontal air jet ceiling installation easy-to-open front plate duct sizes Ø 00- mm Can be installed in SKDM plenum box. Structure and dimensions Manufactured of galvanized steel and coated white (RAL 00). Round duct connection with rubber gasket. Front plate is easily removed for cleaning. Nominalsize Ød A A Weight, kg , , -00, , , , , , -00, A A D A Technical data Supply air Pressure Painehäviö drop pt (Pa) p t (Pa) Air flow Ilmavirta q v (l/s) q v (l/s) L pa, db(a) Exhaust air Pressure Painehäviö drop pt (Pa) p t (Pa) Ilmavirta qv (l/s) Air flow q v (l/s) 0 NORDdiffuser DKU Images are for illustrative purposes We reserve the right to make changes

30 Product codes DKU Ød RAL 000 Product Diameter RAL colour Example: DKU 00-0 Colour code: if other than standard colour. Standard colour white RAL 00. Accessories: SKDM-plenum box Installation Installed directly to duct with screws or rivets or to SKDM plenum box. Nominal size Ød -A mm A Recommended minimum distance before diffuser is x duct diameter (*d). A 0 NORDdiffuser DKU Maintenance Remove front plate. Clean visible parts with a damp cloth. 0

31 DDR Diffuser Diffuser for supply air for large air quantities. Wall or ceiling installation. Diffusion pattern adjustable between narrow are wide by rotating the inner cone. Suitable also for heated supply air. l/s 0 db(a) db(a) 0 db(a) DDR DDR DDR DDR DDR Material and sizes Manufactured of galvanized steel and coated white (RAL 00). Available in other RAL colours. Nominalsize, mm *ØD F E C Weight, kg , , , *ØD duct size. E C D F Technical data Pressure Painehäviö drop p (Pa) p t (Pa) DDR wide air jet dispersal db db db L pa, db(a) Air Ilmavirta flow q v (l/s) q v (l/s) DDR wide air jet dispersal Ilmavirran Throw heittopituus L 0, (m) L0, (m) Air Ilmavirta flow q v q(l/s) v (l/s) 0 NORDdiffuser DDR Images are for illustrative purposes We reserve the right to make changes

32 DDR narrow air jet dispersal Pressure Painehäviö drop p p (Pa) t (Pa) Air Ilmavirta flow q q v (l/s) v (l/s) Acoustic data db db db Ilmavirran Throw heittopituus L L0, (m) 0, (m) DDR narrow air jet dispersal Air Ilmavirta flow qq v v (l/s) 00 0 NORDdiffuser DDR Wide air jet dispersal L w (db) Narrow air jet dispersal L w (db) Sound level correction factor K okt (db) Sound level correction factor K okt (db) Product 0 00 k k k k Product 0 00 k k k k DDR DDR DDR DDR DDR DDR DDR DDR DDR DDR L, db Sound attenuation (db) Mean frequency of octave band (Hz) Product 0 00 k k k k DDR DDR DDR DDR DDR Product codes DDR Product Diameter RAL colour Example: DDR 00 Ød RAL 000 Colour code if other than standard colour (RAL 00, white).

33 Installation and maintenance Installation directly to duct or SKDM plenum box using an inner coupling and fixed with rivets. Clean visible parts with a damp cloth. 0 NORDdiffuser DDR Images are for illustrative purposes We reserve the right to make changes

34 DPR Whirl diffuser Diffuser for supply air for ceiling or free hanging installation. Features: horizontal radial whirl air jet installation in ceiling or free hanging Suitable for hospitals, offices etc. Structure and dimensions Manufactured of galvanized steel and coated white (RAL 00). Nominalsize Ød d E F G h H G d H h 0 F E NORDdiffuser DPR Technical data Pressure Painehäviö drop p pt t (Pa) (Pa) Õhujoapikkus Throw L 0, (m) L0, (m) L pa, db(a) Air Ilmavirta flow q v (l/s) q v (l/s) Air Õhuhulk flow qq v v (l/s)

35 DPR with balancing mesh Pressure Painehäviö drop p pt (Pa) t (Pa) L pa, db(a) Air Ilmavirta flow q v (l/s) q v (l/s) Product codes DPR Ød Product Diameter Example: DPR Installation Directly to duct with rivets. 0 NORDdiffuser DPR Images are for illustrative purposes We reserve the right to make changes

36 DSP Jet pipe Ceiling-installed air distribution system. Features: suitable for schools, offices, meeting halls, sports halls and warehouses especially designed for cooling large induction rate easy to install, measure, regulate and maintenance 0 NORDdiffuser DSP Structure and dimensions Nominal-size l L Weight, kg 0, 00, 0 0, 0, 00 0, 00 Standard material galvanized steel. The duct is patterned with a certain quantity of nozzles. One end with rubber gasket and the other end fits a duct. Other materials and finishes available. Extra ducts (DSPO, L = 0) and parts available. Principle D Designed for optimal cooling effect. Nozzles optimized for dynamic induction and provide effective distribution with low noise level. Each nozzle takes in a seven-fold quantity of room air, blending the supply air evenly and makes it possible to supply a large quantity of cooled air without draft to the occupied zone. As seen on the diagram next page, the nozzles on the duct conform into various patterns (0-0 ). Air flow depends on diameter. The proper function of the system requires controlled air flow speed. Air flow speed should not exceed m/s. Upward 0 Downward 0 Horizontal x0 Circular 0 Min distance between nozzle pipes (m),,,, Installation height (m),-, -,-,-, Ceiling distance from the duct (mm) Supply air temperature, t ( C) L l d

37 Technical data Pressure drop p t (Pa) 0 0 L pa dba Air flow q v (l/s) 0 System design Dimensioning The figure shows maximum air quantities for different sizes of ventiducts. Air quantity and pressure loss are freely selectable until 0 Pa. Figure on the next page shows noise level. If required air volume and pressure loss are defined in the order, the air volume will be preadjusted. If only air volume is defined the product will be supplied with a pressure loss of 0 Pa. Air quantity can be easily adjusted on site by closing or opening nozzles. Air quantity can be calculated as follows: min. x d Installation min. x d min. x d Ventiduct should not be installed too close to bends, tees other elements that may create turbulence and hence noise. Straight duct sections should be installed between ventiduct and potentially disruptive components, as shown in the illustration below. Air quantity is preadjusted and no extra dampers are needed. min. x d min. x d q v = p x 0,00 x quantity q v = required air volume, dm /s p = chosen/measured pressure loss, Pa 0,00 = k-value Qty = number of open nozzles min. x d 0 NORDdiffuser DSP min. x d min. x d min. x d Images are for illustrative purposes We reserve the right to make changes

38 Lengthening of duct DSP DSPO lengthening duct between two jet pipes DSPM DSP DSPO DSPM 0 Product codes D DSP Ød x0 H l/s Product Diameter Supply air pattern Example: DSP 00- x0--h Accessories: DSPO 00 Lengthening duct Non-standard materials: ZM zinc-magnesium coated steel H acid-proof steel Colour code: RAL colours L l d Direction - upward - horizontal - downward Material or color Air quantity (l/s) NORDdiffuser DSP

39 SKD Plenum box Designed to facilitate installing air supply units to duct systems. Makes it possible to adjust unit s air volume and attenuate sound from the duct system. Sizes Ø mm. Material and sizes Manufactured of galvanized steel sheet. Equipped with duct connection with gasket. Sound absorption material mineral wool sheet. Also available with synthetic absorption material. Nominal size d D M E L C Weight 00/ , 00/ , 00/ , / 0 0 0, / , / , / , 0/ , 0/ , 0/ , 00/ , 00/ , 00/ , 00/ , 0/ , 0/ , 0/ , / , / , 00/ , Sound attenuation (db) Nominal size Mean frequency of octave band (Hz) Ød, (mm) 0 00 k k k k 00/ 0 /0 0/00 00/0 0/ /00 0 d L C D M E 0 NORDdiffuser SKD Images are for illustrative purposes We reserve the right to make changes

40 Product codes SKD Product Ød Duct diameter Example: SKD 00- ØD Unit diameter 0 NORDdiffuser SKD 0

41 SKDM Plenum box Designed to facilitate installing air supply units to duct systems. Makes it possible to adjust unit s air volume and attenuate sound from the duct system. Sizes for duct connections Ø 00- mm and unit connections Ø -00 mm. Features: exact measuring and adjusting of air quantities quiet even with high pressures removable measuring and adjusting unit Quick selection SKDM 00 SKDM SKDM 0 SKDM 00 SKDM 0 SKDM Ilmavirta q v (l/s) Materials and sizes Manufactured of galvanized steel sheet. Equipped with duct connection with gasket. Synthetic sound absorption material. L d M E 0 Nominal size d D M E L C Weight 00/ ,0 00/ , / , / , / , 0/ , 0/ , 0/ , 00/ , 00/ , 00/ , 0/ , 0/ , / , C D NORDdiffuser SKDM Images are for illustrative purposes We reserve the right to make changes

42 Technical data SKDM 00 SKDM Pressure Rõhukadu drop p pt (Pa) t (Pa) Pressure Rõhukadu drop p pt (Pa) t (Pa) Air Õhuhulk flow q v v (l/s) Air Õhuhulk flow q v v (l/s) SKDM 0 SKDM 00 Pressure drop p Rõhukadu pt (Pa) t (Pa) Pressure Rõhukadu drop pt p (Pa) t (Pa) Air Õhuhulk flow q v q(l/s) v Õhuhulk Air flow q v (l/s) 0 SKDM 0 SKDM NORDdiffuser SKDM Pressure Rõhukadu drop p pt (Pa) t (Pa) Air Õhuhulk flow q v (l/s) Product codes Pressure Rõhukadu drop pt p (Pa) t (Pa) Õhuhulk Air flow q v v (l/s) SKDM Product Ød Duct diameter Example: SKDM 00-0 ØD Unit diameter

43 Adjustment and measuring The supply volume flow rate for the attached diffuser is determined using the measurement and adjustment module (NRO). The tubes and control spindle are passed through the diffuser front plate. Replace the diffuser. Measure the differential pressure. The flow rate is calculated using the formula below: q v =k* p m k = k-value p m = Measured differential pressure (Pa) Adjust the airflow rate by rotating the control spindle until the desired setting is achieved. Calculate air flow by means of the k-value indicated on the control spindle. Replace the tubes and spindle into the plenum box and replace the diffuser. NRO-adjustement and measuring unit Nominal size Adjustment position Ød, (mm) 00,,,,,,0,,,0, 0,0,,,,, 00,0 0,,,,, 0,,,0 0,,,0,,,,,,0,,0 0 NORDdiffuser SKDM Images are for illustrative purposes We reserve the right to make changes

44 ETS NORD AS Estonia Adress: Peterburi tee Tallinn Estonia Phone: info@etsnord.ee ETS NORD AS Finland Adress: Pakkasraitti 00 Tuusula Finland Phone: + 00 info@etsnord.fi