.Dehumidification unit with air mixing and heat pump functionType CMU<strong>GEA</strong> <strong>CAIRfricostar</strong>System and controls schemeMMMM1MMpMMMVSM2MMPPMMMVSpDIAIDOAOComponentsCasing:Indoor installation– 50 mm panels, inside and outside skins are painted; (corresponds to RAL 9002),the series includes casing frame and service door in casing panel thickness togetherwith a full profile rubber gasket in EPDM quality. All outside and inside surfacesare completely smooth.– Leak tightness class G II according to VDI 3803. Thermal and sound bridges areminimized.– Non combustible insulation (fire classification A1 according to DIN 4102; Ö-NormB3800; CFC-free)– Heat transfer coefficient k = 0,57 W/m2 K– Sound insulation performance Rw = 44 dB according to DIN 52210/T4– Casing features according to EN1886– Filter bypass leakage F9– Leak tightness class according to prEN 1886 (10/2005) L1– Casing leakage B– Mechanical stability 1A– Thermal insulation T2– Thermal bridging factor TB2 (in risk areas)– Frame profiles AlMgSi 0,5– Flexible connection with potential equalisation, temperature resistant from -30 °C to120 °C– Duct connection using 30 mm frame with 4 hole bolt connection– Interior installation parts for swimming pool mode with special corrosion protection8 PR-2008-0327-GB • Subject to modification • Status 09/2008
<strong>GEA</strong> <strong>CAIRfricostar</strong>Dehumidification unit with air mixing and heat pump functionType CMUHeat pump fordehumidification:– Direct evaporator according to VDI 6022: heat exchanger as Cu/Alu model for R407c refrigerant, fins made of aluminium, frame elements made of AlMg3, pipesmade of oxygen-free copper.– Condensate water tray in bottom panel for evaporator and heat recovery system,with a slope in the direction of condensate drain, made of stainless steel V4A powdercoated, including drain tray, conform with VDI 6022– Air-cooled condenser according to VDI 6022: heat exchanger as Cu/Alu model forR 407c refrigerant, fins made of aluminium, frame elements made of AlMg3, pipesmade of oxygen-free copper– Compressor unit: refrigeration circuit with a fully hermetic scroll compressor– With optimized heat exchanger combination for maximum COP values, mounted onanti-vibration mounts, circuit includes filter drier, liquid collector, thermostaticexpansion valve with MOP (maximum operating pressure) and external pressureequalisation, all necessary shut-off valves, monitoring and safety devices(pressostat, icing sensor, etc.)Droplet eliminator – Made of plastic with an aluminium frame at air velocities on supply and exhaust sideexceeding 2,5 m/s is necessaryAir mixing dehumidifier CMUFan unit:Alternative fan unit:<strong>GEA</strong> centrifugal fan „LESS ENERGY SYSTEM“– Optimized operating point, double side suction, coated surface model– Three phase motor, protection class IP55 , model type B3, complete belt drive, easyservice thanks to one bolt tensioning sled– Fan/motor unit mounted on anti-vibration mounts<strong>GEA</strong> „OPTIVENT“ high performance fan impellers– Surface coated one side suction with backward curved blades that are directly connectedto motor shaft; performance optimized three-phase motor, B3 model type,protection type IP55, insulation class F adjusted for operation with a frequency converter.Fan and motor unit including coated intake nozzle mounted on bucklingresistant and coated base construction, motor and fan have sound attenuatedbearings.– Continuous measurement of pressure effects– Statically and dynamically balanced according to DIN ISO 1940, part 1, G2,5).Continuous monitoring of operation using DDC. Frequency converter for eachmotor installed in or mounted on the unit, control via <strong>GEA</strong> DDC with a separate analoguesignal for both motors. Frequency converters are adjusted and set for bothmotors. Limit values for motor current and fan speed are set by the programme– Resonance frequency band/fade out set by factory– Automatic energy optimization for optimal energy use and efficiency rate– Multiple motor operation is possible– Voltage intermediate circuit converter without reduction of capacity– Continuous speed control– Operating hours counter– Min. and max. speed limitation, automatic ramp curve function UP/DOWN– Automatic motor adjustment– Motor tracing switch– DC break– Variable clock frequency– Motor protection– Short circuit and short circuit to earth safe– Under and over current protection– Phase fault monitoringPR-2008-0327-GB • Subject to modification • Status 09/2008 9