AIREDALE LogiCool LCC20, Technical Manual

Page 1: ...COVER LogiCool FreeCooling Chiller 20kW 40kW R410A TECHNICAL MANUAL ...

Page 2: ...ional to maintenance being carried out in accordance with the recommendations provided during the warranty period Failure to have the maintenance procedures carried out will invalidate the warranty and any liabilities by Airedale International Air Conditioning Ltd SPARES A spares list for 1 3 and 5 years will be supplied with every unit and is also available from our Spares department on request T...

Page 3: ...ater Volume Calculations 13 Temperature Control 16 Monitoring 17 Performance Data 18 ESEER Calculations 18 FSEER Calculations 18 Capacity Data DX Mechanical Cooling 19 Operating Limits 19 Capacity Data Free Cooling 20 Glycol Data 22 Waterside Pressure Drop kPa 23 Pump Packages Optional Extras 24 Sound Data 26 Measurement of Sound Data 26 Sound Data 27 General Specification 28 Mechanical Data 28 El...

Page 4: ...er to Optional Extras Energy Saving on page 8 for details Attention has been placed on maximising the unit s cooling and energy performance while keeping the footprint to an absolute minimum CE DIRECTIVE PS and TS Values Airedale certify that the equipment detailed in this manual conforms with the following EC Directives Electromagnetic Compatibility Directive EMC 2014 30 EU Low Voltage Directive ...

Page 5: ...ernal pressure relief External discharge temperature protection Oil sight glass LCC20 Utilises 1 digital scroll compressor offering modulating capacity control between 20 100 of unit capacity LCC40 Utilises 1 digital scroll compressor coupled in tandem with 1 standard scroll compressor offering modulating capacity control between 10 100 of unit capacity Energy saving digital compressors enable cap...

Page 6: ... holes and drain holes to the base Fan Motor Assembly Sickle bladed fan assemblies with integral long bellmouth and fingerproof grille incorporate external rotor ac motor technology capable of highly accurate discreet speed control discharges air vertically The fans offer maximum airflow performance while keeping sound levels to a minimum Each fan is speed controllable and operates from a 3 phase ...

Page 7: ...ed automatic air vents Strategically placed drain valves Ball valve s for Free cooling coil isolation to allow for maintenance Pressure transducer s across evaporator to monitor water pressure drop Inlet water filter ball valve 20 mesh Flushing Bypass Kit Standard Comprises Shut off valves Factory fitted to protect the evaporator from clogging by sediment and to enable the system to be purged befo...

Page 8: ...otor overheating Electronically Commutated EC Fan Motor Sickle bladed fan assemblies with integral long bellmouth and fingerproof grille Incorporate external EC rotor motor technology to provide highly accurate discreet speed control discharge air vertically The fans offer maximum airflow performance while keeping sound levels to a minimum Each fan incorporates on board electronics with inverter d...

Page 9: ...nfigurations are available Single Head Pump Factory fitted with electrical switchgear and isolating valve Single Head Run Standby Pumps Factory fitted dual pumps with filter ball valves on the inlet and outlet the valves can be maintained without interrupting chiller flow Non return valves are fitted to the outlet in automatic changeover configuration Supplied with electrical switchgear and isolat...

Page 10: ... setting an increase in the system EER Energy Efficiency Ratio of up to 30 can typically be seen The Mollier diagram shown below helps to illustrate how this increase in efficiency is achieved EEV s differ to normal thermostatic expansion valves in their ability to maintain control of refrigerant flow and the suction superheat at reduced head pressures The turn down rate of a typical EEV is superi...

Page 11: ...return Energy Efficiency The digitally modulated solenoid achieves capacity modulation of 20 to 100 by varying the loaded or unloaded compressor cycle time and averaging the sum of the loaded and unloaded state The digital scroll compressor operates in an unloaded state for a proportion of the 20 second cycle time as a result the load on the compressor is greatly reduced as refrigerant is not draw...

Page 12: ...OMMUTATED EC FAN MOTOR OPTION EC motors are DC motors with integrated ac to DC conversion this gives the flexibility of connecting to ac mains with the efficiency and simple speed control of a DC motor The EC fan offers significant power reduction in comparison with equivalent ac fan at both full and modulated fan speeds The inbuilt EC fan control module allows for fan speed modulation from 0 100 ...

Page 13: ...ethylene glycol concentration ΔT C Difference of Entering Water and Leaving Water temperature MT Minimum Turndown PHL kW Customer Permanent Heat Load Example Model Ref LCC40 Ambient 35 C Fluid 20 Ethylene Glycol Inlet Fluid Temp 7 C Outlet Fluid Temp 12 C 5 C T Customer Permanent Head Load 20 0 kW Output at given conditions 33 7 kW Vm 33 7 x 60 x 2 x 0 10 x 33 7 x 1 2 3 9 x 5 20 Vm 41 9 L METHOD 2...

Page 14: ...tus and making adjustments to control parameters by allowing the operator access to a series of display pages Also featured shall be a visual alarm and the facility to adjust and display control settings by local operator for information and control Display keypad 1 UP DOWN KEYS To change Adjustable Fields Scrolls up down available Menus 2 ENTER Selects Menus Moves Cursor to Adjustable Fields Gree...

Page 15: ...n be maintained by restricting access with a password PIN number CAUTION IMPORTANT To change the PIN number please contact Airedale at time of order with the preferred 4 digit number OPTIONAL FEATURES Pump s Hours Run Displays hours run of each pump BMS Interface Card Enables Controlled units to be interfaced with most BMS factory fitted please contact Airedale A wide range of protocols can be acc...

Page 16: ...ing capacity is adjusted through use of the microprocessor controls to maintain an average temperature set point between the supply and return temperatures Selection of the best application control scheme can be made via a soft switch in the microprocessor during initial commissioning CAUTION Factory set to Variable Supply Temperature Control unless otherwise stated at order Only when the mode sel...

Page 17: ...ide Differential Pressure Evaporator Waterside Flow Rate calculated ALARM HANDLING The following conditions will be detected triggering a visual alarm Low Supply Temperature Mains Phase Failure Phase Rotation Emergency Stop Option Water Flow Pump s status Individual Compressor Trip Low Suction Pressure High Liquid Pressure Low Pressure Switch Individual Compressor Overload Isolator Status Individu...

Page 18: ...r providing a true energy efficiency of a unit s performance over a year it does not offer any advantages for use of free cooling which can significantly reduce the unit s lifecycle power consumption The FSEER calculation method has been developed by Airedale to give a single value that is a realistic indication of the efficiency of the chiller across the whole range of operation The quoted Aireda...

Page 19: ... 13 5 36 7 14 7 34 7 15 9 17 12 43 2 12 6 40 9 13 8 38 8 14 9 36 7 16 1 1 Cooling Duty based on 20 Ethylene Glycol concentration For alternative concentrations refer to Glycol Data on page 22 2 Output kW DX Mechanical Cooling duty 3 Input kW compressor fan input power 4 Unit water flow rate l s Output kW 3 9 x T 5 Interpolate for water temperatures between those quoted do not extrapolate 6 For con...

Page 20: ...ead Load 20 kW Calculate Waterflow l s Flow Output 3 9 x ΔT Flow 33 7 3 9 x 5 Flow 1 73 l s Select Free Cooling Curve ΔTFC C Return Water Temp Ambient Temp ΔTFC C 15 5 ΔTFC C 10 C Free Cooling kW As plotted on graph 30kW Where Output kW Cooling Duty Output kW refer to Capacity Data DX Mechanical Cooling on page 19 ΔT C Difference of Entering Water and Leaving Water temperature ΔTFC C Difference of...

Page 21: ...ΔTFC 6 C ΔTFC 8 C ΔTFC 10 C ΔTFC 12 C ΔTFC 14 C ΔTFC 35 30 25 20 15 10 5 0 0 4 0 6 0 8 1 0 1 2 1 4 1 6 Waterflow l s LCC40 Free Cooling kW 60 16 C ΔTFC 6 C ΔTFC 8 C ΔTFC 10 C ΔTFC 12 C ΔTFC 14 C ΔTFC 50 40 30 20 10 0 0 75 1 00 1 25 1 50 1 75 2 00 2 25 2 50 2 75 Waterflow l s All performance data is supplied in accordance with BS EN 14511 1 2013 ...

Page 22: ...actors Glycol in System Freezing Point ºC 20 6 C 30 12 C 40 20 C Output kW x 0 98 0 94 0 91 Input kW 1 00 0 98 0 97 Water Flow l s 1 00 0 99 0 99 Pressure Drop kPa 1 08 1 22 1 35 Example Model Ref LCC40 Ambient 35 C Fluid 30 Ethylene Glycol Inlet Fluid Temp 7 C Outlet Fluid Temp 12 C 5 C T Catalogue Multiplier Corrected Figure Output kW 33 7 x 0 98 33 0 kW Compressor Input kW 14 4 x 0 98 14 1 kW W...

Page 23: ...es Variable water volume is NOT recommended and will invalidate warranty Waterside Pressure Drop kPa 300 LCC20 LCC40 250 200 150 100 50 0 0 75 1 00 1 25 1 50 1 75 2 00 2 25 2 50 2 75 Waterflow l s 1 For glycol solutions please refer to Glycol Data on page 22 2 Chiller pressure drop refers to standard unit All performance data is supplied in accordance with BS EN 14511 1 2013 ...

Page 24: ...d the graphs provided to calculate the External Head Available Example Model Ref LCC40 Ambient 35 C Fluid 20 Ethylene Glycol Inlet Fluid 7 C Outlet Fluid 12 C 5 C T Pump Selection Single Standard Water Flow l s 1 87 l s EHA kPa External Head Available EHA kPa Total Pump Head Available Unit Waterside Pressure Drop EHA kPa 165 82 EHA kPa 83 kPa ...

Page 25: ...GES OPTIONAL EXTRAS Total Pump Head Available kPa 350 1 2 300 250 200 150 100 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 Waterflow l s Total Pump Head Available kPa 300 3 4 250 200 150 100 0 5 1 0 1 5 2 0 2 5 3 0 Waterflow l s Single Head Pump or Run Standby Pump Standard Larger LCC20 Curve 1 2 LCC40 Curve 3 4 ...

Page 26: ...n all directions All Sound Power Levels quoted are calculated from measured sound intensity according to BS EN ISO9614 Part 1 2009 Sound Pressure Levels are calculated from sound power using the expanded parallelepiped method according to BS EN ISO11203 2009 SOUND DIRECTIVITY The Global sound measurements quoted in the following tables do not incorporate any directivity or denote any sound level h...

Page 27: ...e 10m 54 52 55 54 50 49 46 40 1 dB A is the overall sound level measured on the A scale 2 All sound data measured at nominal conditions Water in out 12 7 C at 35 C ambient 3 Based on standard unit for units fitted with optional pump packages please contact Airedale The Sound Pressure data quoted is only valid in free field conditions where the unit is installed on a reflective base If the equipmen...

Page 28: ...olyol Ester Refrigeration Single Circuit Refrigerant Control Electronic Expansion Valve EEV Refrigerant Type Precharged R410A Charge Total kg 6 8 10 3 Connections Water Inlet Outlet Type PN16 PN16 Water Inlet Outlet Size in 1 1 4 1 1 2 Water Drain Bleed in 1 2 1 2 Water System Min System Water Volume 7 l 80 6 74 7 Max System Press bar 10 10 OPTIONAL EXTRAS Water Pump 1 In Line Pump Max System Pres...

Page 29: ... A 6 20 11 00 Compressor Per Compressor Quantity 1 1 1 Motor Size kW 6 8 6 8 6 4 Nominal Run Amps 1 A 12 1 12 1 11 7 Start Amps 2 A 101 101 101 Type Of Start Direct on line OPTIONAL EXTRAS Compressor Oil Heater Rating W 70 70 70 Electronic Soft start Nominal Run Amps 1 A 14 28 Maximum Start Amps A 63 77 Recommended Mains Fuse A 25 40 EC Condenser Fan Per Fan Quantity 1 1 Full Load Amps A 3 10 4 10...

Page 30: ...contact Airedale 1 Airflow direction 2 Electric control panel 3 Mains cable entry 4 Compressor compartment 5 Mains electric isolator 6 1 2 BSP Ø mounting holes 7 Lifting eye bolts x 4 8 Refrigeration component access panels 9 Water Outlet BSP Female Connection LCC20 1 1 4 LCC40 1 1 2 10 Water Inlet Note the pipework connections on the unit allow for a 1 BSP Male fitting to be screwed into the asse...

Page 31: ...le chiller Use the appropriate spreader bars lifting slings with the holes lugs provided Chains slings MUST NOT interfere with the casing of fan assembly to avoid damage Lift the unit slowly and evenly If the unit is dropped it should immediately be checked for damage and reported to Airedale CAUTION Only use lifting points provided The unit should be lifted from the top and where possible with al...

Page 32: ... side enclosed applications Ensure there are no obstructions directly above the fans Allow free space above the fans to prevent air recirculation CAUTION Prior to connecting services ensure that the equipment is installed and completely level LEFT SIDE FRONT 2 1000 1 2 1500 1 REAR COIL 1 Airflow clearance minimum mm multiply x 2 between units 2 Maintenance clearance minimum unit minimum 200mm RIGH...

Page 33: ...chiller unit as standard Temperature Sensors Drain Point Auto Air Vent Differential Pressure Monitoring of Evaporator Pressure Sensing Points 20 Mesh Inlet Filter Component Recommended Requirements The recommended requirements to allow commissioning to be carried out correctly are The inclusion of Binder Points adjacent to the flow and return connections to allow temperature and pressure readings ...

Page 34: ...peration PUMP PACKAGES OPTIONAL EXTRAS Flow Schemes A Standard Unit No Pump B Single Head Pump C Run Standby Pump 1 Filter Ball Valve 8 Differential Pressure Transducer 2 Pump 9 Auto Air Vent 3 Non Return Valve 10 Mixing Valve 4 Water Supply Return 11 DRV Flushing Bypass 5 Drain 12 Binder Points 6 Ball Valve 13 Free Cooling Coil 7 Plate Evaporator Interlocks Protection Always electrically interloc...

Page 35: ...mpressor oil heater if fitted evaporator trace heating and control circuits FAILURE to do so could INVALIDATE WARRANTY Interlocks Protection Always electrically interlock the operation of the chiller with the pump controls for safety reasons CAUTION Do not rely solely on the BMS to protect the chiller against low flow conditions If a pump package is not selected as part of the unit an evaporator p...

Page 36: ...illers Technical Manual 6521355 V1 14 0 11 2016 pLAN Termination IMPORTANT The plugged termination ensures that the connections are made simultaneously Failure to attach the cables this way may cause damage to the controller ...

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Page 38: ...0 Fax 44 0 113 250 7219 e mail enquiries airedale com website www airedale com LITER ATUR E ORDER COD E PART NO ISSUE DATE 6521355 A 01 05 07 B 01 06 07 C 01 10 07 D 01 06 09 E 13 04 2010 F 04 2011 G 09 2012 V1 7 0 02_2013 V1 8 0 07 2014 V1 9 0 10 2014 V1 9 1 10 2015 V1 10 0 03 2016 V1 11 0 04 2016 V1 12 0 05 2016 1 13 0 08 2016 1 14 0 11 2016 ...