Knürr CoolBlast ®LUF20128LUF20140Knürr CoolBlast ® <strong>Fan</strong> Unit,speed-controlled– <strong>Fan</strong> unit <strong>for</strong> vertical cooling of modules in19” racks– Reference temperature can be set (20°C to55°C)– Speed control, 30 to 100%, with sensor break100% rotation– Individual fan monitoring– Digital alarm output <strong>for</strong> excess temperaturealarm and fan failure– Optical status display <strong>for</strong> O.K., excesstemperature and fan failure– Acoustic warning with push-button– Chassis rails are recommended <strong>for</strong> mounting.Chassis rails are required with 6-pieceCoolBlast.■ MaterialSheet steel, high-grade steel grid■ Finish/colorHousing, zinc-passivatedFront panel, powder-coated, smoothin RAL 7035 light grayApprovalsCE Symbol in accordance with Low VoltageDirective 73/23/EEC, EMC Directive 89/366/EEC■ Supply schedule1 CoolBlast fan unit, packed with operatinginstructions1 sensor cable, 2 m (plug-in)1 signal cable, 2 m (plug-in)Only with DC devices:1 connection cable, 2 m with connector plugand free endsOnly with AC devices:1 connection cable, 2 m Euro cable■ How suppliedAssembled, wired and tested■ NoteFurther characteristics can be implementedproject-related in line with standards.LUF20179Name W H D kg n Elec. connection P(W) V • (m3/h) ΔP(Pa) p(dB(A)) Order no.CoolBlast 115/230V, 3-piece regulated SP 440 43.6 230 3.2 3 100 to 253VAC; 50/60Hz 25 553 68 49.6 03.027.021.1CoolBlast 115/230V, 6-piece regulated SP 440 43.6 390 6.2 6 100 to 253VAC; 50/60Hz 48 1106 68 53.3 03.027.022.1CoolBlast 115/230V, 3-piece regulated HP 440 43.6 230 3.2 3 100 to 253VAC; 50/60Hz 32 711 173 55.8 03.027.024.1CoolBlast 115/230V, 6-piece regulated HP 440 43.6 390 6.2 6 100 bis 253VAC; 50/60Hz 62 1422 173 59.1 03.027.025.1CoolBlast 24/48V, 3-piece regulated SP 440 43.6 230 3.1 3 20 bis 60VDC 25 553 68 49.6 03.027.051.1CoolBlast 24/48V, 6-piece regulated SP 440 43.6 390 6.1 6 20 bis 60VDC 48 1106 68 53.3 03.027.052.1CoolBlast 24/48V, 3-piece regulated HP 440 43.6 230 3.1 3 20 bis 60VDC 32 711 173 55.8 03.027.054.1CoolBlast 24/48V, 6-piece regulated HP 440 43.6 390 6.1 6 20 bis 60VDC 62 1422 173 59.1 03.027.055.1Dimensions in mm: W = Width U = standard height unitH = Height1 U = 44.45 mmD = Depth UP = unit of packagingh = installation height kg = weightd = useful depthL = length= Express itemConversion: 1 mm = 0.03937 inch1 kg = 2.2046 poundSP = Standard Per<strong>for</strong>mance ΔP = Pressure increase (Pi)HP = High per<strong>for</strong>manceI nom = Nom. current (A)UP = Ultra high per<strong>for</strong>mance I max = Max. residual current (A)V = Voltage (400V = 3-phase)n = Number of fans p = Sound pressure (dB(A)) in 1 mP = Power consumption (W) from the rackV . = Air volume flow (m3/h)(600 mm x 600 mm;ΔV . = Airflow volume loss (%)raised cover)1.119
Knürr CoolBlast ®Knürr CoolBlast ® Airflow via Front IntakeStrong pointsLUF20148The front intake unit <strong>for</strong> the KnürrCoolBlast ® used <strong>for</strong> the targetedcooling of module units that aresituated on top of one another (heatsources).1 The optimized airflow guidesthe cooled air specifically to therear. (See graphic 1). This preventsincreased warming up of thevertical airflows from module chassisto module chassis. (See graphic 2).2 The optionally available front panelcan be mounted later on and isoften used <strong>for</strong> optical appearancereasons.3 The filter mat protects theelectronic components in use fromdirt build-ups and dust, and theycan also be swapped out duringrunning operation.1 LUF200562 LUF201363 LUF20146OptimumLUF20156Little effectLUF20157Possible configurations:Const. of Fig. Order no. Airflow volume loss3-piece 6-piece 3-piece 6-pieceAirflow 1 03.027.094.1 03.027.095.1 30 % 45 %Airflow 1 + 2 03.027.094.1 03.027.095.1 40 % 55 %plus front panel 03.027.097.1 03.027.097.1Airflow 1 + 2 + 3 03.027.094.1 03.027.095.1 50 % 60 %plus front panel 03.027.097.1 03.027.097.1and filter 03.027.098.1 03.027.099.1.120