DATA amp FACTS GEA Close Control Delta GCI

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Description GEA Close Control,The Range 3,Upflow and Downflow Versions. Direct Expansion and Chilled Water Units 3,Key to Type Codes 3. Energy Saving Options 4,Dimensions Downflow Units 5. Dimensions Upflow Units 6, Unit Weights Access Typical Airflow Arrangements 7. Guide Specification 8,General Details 11,Cooling Performance X A Versions 13.
Cooling Performance W F Versions 14,Cooling Performance C Version 15. Electrical Details 16,X and A Version 16,W F and C Version 17. Schematic Diagrams 18,X Version 18,A Version 19,W Version 20. F Version 21,C Version 22,Ancillaries and Options 23. 2 PR 2006 0296 GB y Subject to modifications y Status 05 2007. GEA Close Control The Range,E Range Key to Type Codes.
Upflow and Downflow Versions,Direct Expansion and Chilled Water Units. The E Range of air conditioning units is compact and stylish with the higher. performance and quality demanded by today s close control air conditioning market. These units are designed and built using our unrivalled experience in close control. air conditioning with extensive testing of components and complete systems Every. aspect is engineered to ensure maximum reliability economy of operation and long. working life together with ease of installation and maintenance. The E Range comprises eight 8 models in four 4 cabinet sizes with nominal. capacities from 22 kW to 100 kW in the following versions. X Split System using Denco Condensing Units, A Air Cooled DX System with inbuilt compressor s and using Denco DCRA. Condensers, W Water Cooled DX System with inbuilt compressor s and Water Cooled. Condensers,F Ambicool System,C Chilled Water System. D Combicool System,Key to Type Codes,Example U 54 A V G H.
H Humidifier fitted,G Front Grille Return U only,as opposed to underfloor return. V Variable Refrigerant Flow VRF,A A Air Cooled System. X Split System,W Water Cooled System,F Ambicool System. C Chilled Water System,D Combicool System,54 Unit Size 24 34 44 54 64 74 84 and 94. U Upflow D Downflow, PR 2006 0296 GB y Subject to modifications y Status 05 2007 3.
Energy Saving Options GEA Close Control, E Range air conditioning units incorporate all of the energy cost saving benefits. for which Denco products are renowned These include. Ambicool Glycol freecooling system F Version,not available on models 48 83. This substantially reduces annual energy consumption and. consequently costs by exploiting low average ambient. temperatures to provide partial or full freecooling It is very. unusual to experience the design summer ambient for any. length of time and external temperatures are generally. considerably less for much of the year This allows the. drycooler to produce glycol at lower temperatures, When the glycol is colder than the room air it is passed. through the economy coil before reaching the condenser. picking up some heat directly from the room rather than via. the refrigeration system Under conditions such as this the. compressor run time is reduced thereby saving energy As. an example some degree of freecooling is usually, available for 70 of the year in northern Europe giving. very substantial running cost savings,Variable Refrigerant Flow VRF V Option.
This provides various compressor options for efficient part. load performance with exceptional economy,Full Cooling Load. Both compressors running to circulate the full design. refrigerant flow in order to achieve specified maximum. cooling capacity The scroll compressor coefficient of. performance COP is typically 3 5,Part Load Operation. Lead compressor only running to circulate approximately. 60 of the refrigerant flow Evaporator and condenser are. both oversized under this condition causing increase in. suction pressure and a reduction in discharge pressure. Resultant part load COP increases to typically 5 0. Secondary benefits include reduced temperature swing and. increased compressor reliability caused by reduced cycling. and an optional two stage high pressure trip Lower inrush. current and inbuilt redundancy is also provided by dual. compressors and reduced humidifier run time due to the. very high sensible heat ratio achieved at the higher. evaporating temperatures Payback period is typically less. than one year, 4 PR 2006 0296 GB y Subject to modifications y Status 05 2007. GEA Close Control Dimensions Downflow Units, PR 2006 0296 GB y Subject to modifications y Status 05 2007 5. Dimensions Upflow Units GEA Close Contro, 6 PR 2006 0296 GB y Subject to modifications y Status 05 2007.
GEA Close Control Unit Weights Access Typical Airflow Arrangements. Unit Weights,Weights approx kgs 24 34 44 54 64 74 84 94. Version X and C 345 345 485 485 735 735 795 795,Version A 520 535 770 795 1045 1090 1220 1230. Version W 535 550 860 890 1075 1130 1280 1305,Version F 720 740 1165 1200 1480 1525 1705 1760. Unit Access Requirements, The E Range of air conditioning units has been designed. to be completely front access for service maintenance via. the front hinged removable doors Therefore no, allowance for access to the ends or back is necessary.
although the end panels can be removed in situ if required. Typical Airflow Arrangements, Section A Downflow into raised floor Return from room or ceiling. Section B Upflow with horizontal discharge plenum and front grille return. Section C Upflow with ceiling duct extension and underfloor return. PR 2006 0296 GB y Subject to modifications y Status 05 2007 7. Guide Specification GEA Close Control, The cabinets shall be attractively designed having bevelled corners with flush fitting. curved panels Units shall have a rigid frame manufactured from non corroding. Aluzink with hinged curved front panel s to provide access for installation and. servicing Panels shall be lined with class O non eroding insulation material with. both thermal and acoustic properties External panels shall be manufactured from. pre coated steel colour Grey RAL number 7024,Cooling Coil. The coils shall be multi row constructed from 3 8 O D copper tubes with. mechanically bonded aluminium fins Direct expansion coils shall have internal. grooving for optimum heat transfer The coil face area shall be maximised to ensure. high sensible heat ratio and low airside pressure drop thereby minimising fan power. and noise level A stainless steel drain tray shall be included to ensure efficient. removal of the condensate via a factory fitted trap. DX Units shall have one two or four refrigeration circuits dependent upon. model inclusive of liquid distributor expansion valve solenoid valve sight glass. and filter drier and these components shall be housed in the cabinet. C Units shall be fitted with a modulating 3 way valve having manual override. facility with water pressure temperature test points and these components shall. be housed in the cabinet, Large low speed double inlet double width fans with forward curved impellers and. sealed for life ball or roller bearings shall be used to minimise noise levels Units. shall have one two three or four fans depending on unit size each fan to have its. own TEFC motor and speed variation by manually adjustable pulley Units shall. include fan fail airflow alarm which shall in the event of an alarm condition disable. all outputs except unit run, 8 PR 2006 0296 GB y Subject to modifications y Status 05 2007.
GEA Close Control Guide Specification,Electric Heaters. Electric heaters shall have rigid Incoloy sheathed elements with stainless steel. finning balanced over three phases and rated to operate at black heat Control shall. be in one or two stages each stage being protected by a high temperature safety. Filtration, The filters shall have an efficiency of 30 ASHRAE 52 76 Eurovent 4 5 arrestance. value 90 G4 They shall be fitted in the return air stream held by quick release. retaining clips and be accessible from the front of the unit A differential pressure. switch shall be fitted which through the alarm facility in the microprocessor. controller shall indicate when the filters need changing. Compressors, Fully hermetic scroll compressors one or two VRF only for each refrigerant circuit. shall be located out of the airstream in the services section of the air handling unit for. A W and F versions The compressor s shall be located externally in the. condensing unit for X versions When fitted inside the unit compressor s shall be. resiliently mounted on a robust frame to minimise noise and vibration transmission to. the structure Each compressor shall be fitted with back seating isolating valves. together with crankcase heater X systems only and on larger models an oil level. sight glass shall be fitted, An external adjustable high pressure cut off switch with manual reset facility shall be. provided for high pressure protection in addition to the internal devices To protect. primarily against loss of refrigerant charge an adjustable low pressure switch shall. also be provided which includes an automatic reset facility On X and A versions. a LP alarm delay function for temperatures down to 25 C is fitted as standard. Condenser Fan Speed Controllers shall be fitted as standard to units operating with. air cooled condensers A version The controllers one for each refrigeration circuit. are located within the service section of the Air Handling Unit giving easy access for. servicing and adjustment, Note Where air cooled condenser are not of Denco manufacture they must be.
single phase and have a FLC of less than 5A per circuit to operate with this option. Water Cooled Condensers, The condenser shall be a compact brazed plate heat exchanger having a multiplicity. of parallel stainless steel pressed plates The construction shall give high turbulent. flows resulting in a compact heat exchanger form with low pressure drops. Humidifier, The humidifier shall be of the electrode boiler type located in the bottom of the unit. Features shall include proportional steam output and microprocessor control with. alarms and diagnostic facilities The control system shall allow the use of a wide. range of mains water conditions and optimise drain down frequency for maximum. operational economy,Dehumidification, This shall be achieved by switching cooling stages as required in the case of a VRF. system this would run both compressors on one of the refrigeration circuits. PR 2006 0296 GB y Subject to modifications y Status 05 2007 9. Guide Specification GEA Close Control,Electrical Panel. The electrical switchgear shall be contained in a cubicle located in the top of the unit. and shall include,Controller baseboard and modules if applicable.
MCB s and contactors for fans heaters humidifier and compressors as. appropriate,MCB s for remote condensing units if applicable. MCB s plus pressure operated on off switches for remote condensers if. applicable, Cabling shall be colour coded and numbered and neatly run in trunking segregating. high and low voltages All wiring shall comply with BS EN 60204 Part 1. Control Panel, The control system and display and push buttons shall be positioned at eye level in. the front hinged panel of the unit The door interlocked isolator is positioned in a. separate fixed box behind this panel The electrical switchgear contained in a. hinged cubicle behind this panel shall include, A bottom entry gland plate with grommeted cable entry holes. MCB s and contactors for fans heaters humidifier and compressors as. appropriate,MCB s for remote condensing units if applicable.
MCB s plus pressure operated controls for remote condensers if applicable. Condenser fan speed controllers, Cabling shall be colour coded and numbered and neatly run in trunking segregating. high and low voltages All wiring shall comply with BS EN 60204 Part 1. Microprocessor Controls, All units shall be fitted as standard with a C3 05 advanced microprocessor controls. system designed by Denco This shall provide maximum economy of operation a. comprehensive intelligent alarm system and a wide range of information for. operators and service engineers All information shall be presented in a user friendly. format with tamper proof setting up arrangements, In addition to precise control of temperature and humidity the system shall include. the following features, A liquid crystal semi graphical display indicating unit function via icons. displaying control conditions and historic logging of temperature and humidity. conditions, Coded security access for set point parameter adjustment.
Programmable stage delays to minimise inrush currents. A comprehensive alarm system Alarms shall be memorised and displayed in the. order in which they occur in order to aid fault diagnosis. Programmed set points and parameters shall be held in a non volatile memory. therefore being safeguarded upon power failure, Denco Net functions are a standard feature within the controller. Various third party communication and interface options are available which. connect direct to the C3 05 controller, 10 PR 2006 0296 GB y Subject to modifications y Status 05 2007. GEA Close Control General Details,General Details,D U All Versions 24 34 44 54 64 74 84 94. Coil Face Area m2 1 22 1 22 1 91 1 91 2 60 2 60 3 29 3 29. GEA Close Control Unit Weights Access Typical Airflow Arrangements E Range PR 2006 0296 GB y Subject to modifications y Status 05 2007 7 Unit Weights Weights approx kgs 24 34 44 54 64 74 84 94 Version X and C 345 345 485 485 735 735 795 795 Version A 520 535 770 795 1045 1090 1220 1230

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