LPCA 055-060-070-075-085-090-100-115 125-135-150-170RMB

Contents1. Technical Description2. Specifications3. Capacity Tables4. Water PressureDrop Curves5. Operation Range6. Sound Data7. Outlook Drawings8. Refrigerant Circuit Diagrams9. Wiring Diagrams10. Installation11. Guide SpecificationsInterklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 3

1. Technical DescriptionGeneralThe LPCA-RMB series air-cooled water chillers consists of 12models covering capacities from 188.2 up to 597.9 Kw.It is the end result of a thorough study, and accurate design byexperienced Interklima research and development teams, todevelop a large size chiller series with compact shape, highperformance, and reliability of the highest quality standards.This series meets the highest levels of aesthetic and technicalrequirements using the latest technological innovations includingenvironmentally friendly R407c refrigerant that is Chlorine-freeand has zero ozone depletion potential. LPCA-RMB units aretherefore ideal for installation in urban environments due to theirelegant design, selected materials and low operating sound levels.CasingAll units use metal parts fabricated from heavy gauge galvanizedsteel sheets, formed to ensure maximum rigidity that guaranteesand preserves the units operation during the years. Afterfabrication these are degreased, phosphatised, andelectrostatically powder coated with an epoxy-polyester RAL 9002coating of a thickness 60-70 Ì. This fully automatic processensures superior corrosion resistance against the mostaggressive ambient conditions. The treatment can successfullywithstand a salt spray test of 500 hours, according to ASTM B-117. All components are assembled together using bolts thusavoiding the need for welding which may harm the galvanizationof the steel, and ensures that the whole assembly can fullywithstand adverse weather conditions.The compact footprint of the unit arises from detailed study anddesign by our engineering teams and results in a machine, whichfits easily in restricted areas and is simple and easy to install andmaintain, and has been designed with special fittings for easytransport and lifting.Removable side panels are used to permit access only toauthorized personnel to internal components of the unit forinspection and maintenance. Electrical and electronic equipmentand components for proper unit operation are located in a weatherproof (IP 55) electrical panel with access via only a special key.CompressorAll units’ use low-noise, maintenance free, Hermetic Tandem Scrollcompressors with low vibration levels, specially optimized for usewith R407c refrigerant, selected from world class suppliers.They are equipped with a crankcase electrical heater for the oil, andare internally protected against potential overloading or electricalspikes. The compressors are mounted on special antivibrationrubber mounts to eliminate vibration from the unit’s operation.Air heat exchangerAll unit air heat exchangers are manufactured from high qualitycopper inner grooved seamless tubes according to ASTM B-280,having an outside diameter of 9,52 mm (3/8"). The fins aremanufactured from aluminium and form the secondary extendedheat transfer surface. The fins are continuous across the heatexchanger and are fabricated in high precision dedicated presslines. The fin surface is waffle formed, so as to increase the finrigidity, and has special louvers that help increase heat transfer.The combination of internally grooved Copper-tubing and louveredfins has resulted in a heat transfer performance 30% superior tothat of a conventional coil for this particular application. Theassembly of the finned pack is achieved by mechanical expansionof the tubes in such a way as to form a perfect mechanical bondwith the fins. For this purpose, the fin holes have a peripheralextrusion (collar) of adjustable height. This extrusion serves todefine the distance between fins (and consequently the total heattransfer surface) and to ensure perfect contact of the fins to thetubes. Alternative fin materials are available upon request such asepoxy – coated aluminium or copper for applications in especiallyaggressive environments.Water heat exchangerAll units are equipped with a Shell and Tube water direct expansiontype evaporator that has multiple cooling circuits, one for eachindependent refrigerant circuit. The casing is of steel and theinternal tubes are of copper. There is an air vent valve, drain valve,probes for water temperature sensors, differential pressure switchand the whole heat exchanger is wrapped in a heavy insulationmaterial appropriate for external installation.Air heat exchanger fansAll unit fans are of the axial type, three phase, 6 poles, internallyprotected against potential overheating silent and suitable foroutdoor installation. Due to the sophisticated aerodynamic designof the blades and inlet cones, as well as the perfect static anddynamic balancing, their operation is completely vibration-free.The fan-motor assembly has a protective grid against accidentalcontact with moving parts, which is designed according to ISOregulations. Fan motors are aerodynamically shaped so as not tointerfere with the airflow, and have permanently lubricatedbearings that do not require servicing. Continuous linear fan speedregulation control is achieved according to coil temperaturesincluding fan silent mode operation. This is an optional feature forInterklima LPCA units that saves energy and reduces sound levelsdramatically, optimizing capacity.4Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

Microprocessor controllerAll units are equipped with an electronic programmable controlsystem. This allows complete management of all the functions ofthe unit and ensures protection of all vital parts. It has adiagnostics function, permitting easy and straightforwardunderstanding of all the possible failures and malfunctions of theunit. All functions and indicators appear on the LCD screen. Over150 programmable parameters offer complete unit management.Critical parameters that require control are:ñ Start-up shut down time of compressor.ñ Time delay.ñ Protection against multiple start-up.ñ Water pump time delay in reference to compressoroperation.ñ Inlet/Outlet water temperature.ñ Air heat exchanger temperature.Controlled operational parametersñ Water temperature adjustment in the inlet side duringsummer operation*.ñ Water outlet temperature adjustment in summer operation**.ñ Compressor capacity control.Controlled fault parametersñ Low suction pressure per refrigerant circuit.ñ High discharge pressure per refrigerant circuit.ñ Compressor overload.ñ Fan motor overload.ñ Water pump overload.ñ Flow switch fault.ñ Water sensor error due to bad contact or sensor failure.ñ Error reading in water outlet low temperature.ñ Compressor operating hour reading.In addition the control also includeñ Self diagnostic error of all electronic control sensors.ñ Remote on/ off switch.ñ Remote alarm indication capability.ñ Remote cool/heat selector switch.ñ History of operation points and fault codes**.ñ Password access code.Refrigerant circuitThe units have multiple refrigerant circuits depending on the sizeone per tandem compressor.Each circuit consists of the following:ñ Thermal expansion valve.ñ Filter drier with a replaceable core.ñ Shut off valves.ñ 2-way solenoid valve.ñ High and low pressure gauges for each refrigerant circuit,easily viewed.ñ Service valves.ñ Unit protection is provided by a high pressure switch withmanual reset, low pressure protection is a low-pressureswitch with auto reset.ñ Flexible refrigerant pipe on the compressor discharge andsuction lines to avoid vibration and noise.Optional accessoriesMicroprocessor controller optionsñ BMS module interface kit for Bacnet, Lon Works and Trendconnection**.ñ BMS interface kit for Modbus connection.ñ Connection via internet using a device converting the Carelprotocol to 10Mb/s TCP/IP ethernet protocol**.ñ Possibility to send and receive messages using a GSMmodem**.ñ Communication card through RS232 / RS485 serial ports.ñ Extended memory card for up to five thousandsmessages**.ñ Extended memory card 1&2 MB**.ñ Parallel chiller operation with standard controller for unitswith a maximum of eight compressors*.ñ Microprocessor parameter reprogramming card.ñ Compressor running current**.ñ Self diagnostic and adaptive control**.Other unit accessories/optionñ R407c or R22 refrigerant.ñ Condenser fins made of copper or prepainted aluminum, andBlygold treatment for corrosion protection.ñ Glycol for chilled water temperature down to –5 o C.ñ Continuous linear fan speed regulation.ñ High pressure relief valve on compressor discharge.ñ A-meter, V-meter.ñ Compressor noise reduction jacket.ñ Electrical board ventilation fan.ñ Water heat exchanger antifreezing electrical heater.ñ Other custom built options upon request.* For models 055-085** For models 090 – 170Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 5

2. SpecificationsLPCA 055-170RMBTypeNominal cooling capacityConstructionCompressorQuantityCapacity stepsAbsorbed powerNominal operating currentMaximum operating currentCondenserEvaporatorQuantityWater contentMax. Operating pressureConnectionsNominal water flowWater pressure dropMinimum system water contentFanQuantitySpeedTotal air flowAbsorbed powerNominal operating currentMaximum operating currentElectrical characteristicsTotal absorbed powerNominal operating currentMaximum operating currentCompressor carter resistance powerPower cables cross section per phaseFusesVoltage operating limitsRefrigerant circuitNumber of circuitsExpansion deviceRefrigerant typeNoise level @ 5mDimensionsShipping weightkWRTBtu/hMaterial/ColorkWAAlWater side barRefrigerant side barWidthLengthHeigthl/hkpalrpmm3/hkWAAkWAAkWmm 2 AVdB(A)mmmmmmkgLPCA-055188,253.0641.5912(x2)457.198.8146.0150.01629DN 1003237031.71129485081.7008.01819.265.1116.81650.381203x2002692200260022002070LPCA-060214,661.0731.5912(x2)465.0110.7164.0150.01629DN 1003691140.91288485081.7008.01819.273.0128.71830.481503x2002692200260022002200LPCA-070240,968.0821.2502(x2)472.8125.4186.0163.01629DN 10041435291445485077.0008.01819.280.8143.42050.541503x2252692200260022002300LPCA-075267,376.0911.250Tandem Scroll2(x2)480.6140.2208.0163.01629DN 1004597637.21604485077.0008.01819.2400V/3Ph/50Hz88.6158.22270.61853x2502692200260022002350LPCA-085299,085.01.019.318Galvanized steel / Light grey-beige (RAL 9002)2(x2)488.4153.6229.0158.01629DN 1005142844.81794485075.0008.018.019.296.4171.62480.62403x3002692200260022002530LPCA-090321,991.01.097.3863(x2)697.5166.0246.0High capacity cross finned coil with internally groved and louvered finsShell and Tube360-440Vthermal expansion valveR407c188.01629DN 1255536734.319316850115.40012.027.028.8109.5193.02750.723003x4003722200390022003340LPCA-100361,4103.01.232.0453(x2)6109.2188.1279.0188.01629DN 1256216142.321686850112.50012.027.028.8121.2215.13080.813003x40037222003900220034106Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

TypeNominal cooling capacityConstructionCompressorQuantityCapacity stepsAbsorbed powerNominal operating currentMaximum operating currentCondenserEvaporatorQuantityWater contentMax. Operating pressureConnectionsNominal water flowWater pressure dropMinimum system water contentFanQuantitySpeedTotal air flowAbsorbed powerNominal operating currentMaximum operating currentElectrical characteristicsTotal absorbed powerNominal operating currentMaximum operating currentCompressor carter resistance powerPower cables cross section per phaseFusesVoltage operating limitsRefrigerant circuitNumber of circuitsExpansion deviceRefrigerant typeNoise level @ 5mDimensionsShipping weightkWRTBtu/hMaterial/ColorkWAAlWater side barRefrigerant side barWidthLengthHeigthl/hkpalrpmm3/hkWAAkWAAkWmm 2 AVdB(A)mmmmmmkgLPCA-115400,9114.01.366.705 1.528.636 1.642.841 1.822.159 2.038.295Galvanized steel / Light grey-beige (RAL 9002)3(x2)6120.9210.2312.0Tandem Scroll4(x2)8145.6250.9372.0High capacity cross finned coil with internally groved and louvered finsShell and Tube180.01629DN 1256895538.324056850112.50012.027.028.8132.9237.23410.92x1203x4003722200390022003500LPCA-125448,4127.03(x2)6132.6230.4343.51134.01629DN 15077.12532.426906850112.50012.027.028.8144.6257.43720.92x1503x400400V/3Ph/50Hz161.6286.94101.082x1503x500360-440V344thermal expansion valveR407c722.2003.9002.2003800LPCA-135481,9137.01134.01629DN 15082.88737.328918850154.00016.036.038.4742.2005.2002.2004560LPCA-150534,5152.04(x2)8161.3280.3416.01135.01629DN 15091.93445.632078850150.00016.036.038.4177.3316.34541.22x1853x600742.2005.2002.2004650LPCA-170597,9170.04(x2)8176.8307.0458.01114.01629DN 150102.83951.235878850150.00016.036.038.4192.8343.24961.22x2403x6004742.2005.2002.2004990NOTESNominal conditions areas follows:-entering/leaving chilledwater temperature12/7 o C; ambient35 o CDB (cooling).-electrical installationspecifications are purelyindicative and nonbinding,all connectionsto the system and theelectrical installation mustbe in full accordance withall applicable national andlocal codes.Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 7

Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll83. Capacity tablesLPCA-055LPCA-060LPCA-070LPCA-075LPCA-085LPCA-090LPCA-100LPCA-115LPCA-125LPCA-135LPCA-150LPCA-170Wateroutlet ÆCCoolingcapacitykWAbsorbedpowerkWCurrentAAbsorbedpowerkwCurrentACoolingcapacitykWAbsorbedpowerkWCurrentACoolingcapacitykWAbsorbedpowerkWCurrentACoolingcapacitykWAbsorbedpowerkW25 30 35 40 45CurrentACoolingcapacitykW571057105710571057105710571057105710571057105710197.6213.1238.2225.6243.5272.1255.1275.6308.7284.5307.8345.3315.9341.8383.6338.4365.2408.2382.6413.5463.1426.8461.7518.0473.9512.7575.4510.2551.3617.5569.1615.6690.7631.9683.5767.245.245.445.751.751.952.058.258.559.064.765.265.970.971.472.277.677.878.087.387.888.497.197.898.8106.4107.1108.3116.5117.1117.9129.5130.3131.8141.8142.8144.383.984.084.193.493.694.1107.0107.3107.8120.5120.9121.6130.8131.3132.1140.1140.5141.1160.5160.9161.8180.8181.4182.4196.1196.9198.2214.0214.6215.7241.1241.9243.2261.5262.5264.3186.0200.9224.9212.3229.4256.9238.9258.5290.1265.6287.7323.4296.2320.7360.5318.4344.0385.3358.4387.8435.2398.4431.6485.1444.3481.1540.7477.9517.1580.3531.2575.5646.8592.4641.5721.050.750.851.057.858.158.464.965.265.671.972.372.978.979.279.986.787.187.697.397.898.4107.9108.4109.3118.3118.9119.8129.7130.3131.3143.8144.6145.8157.8158.5159.790.790.890.9101.2101.5101.9115.3115.5116.0129.3129.6130.1141.0141.4142.1151.9152.2152.8172.9173.3174.0194.0194.4195.2211.5212.1213.1230.5231.1232.0258.6259.2260.3282.0282.8284.2174.0188.2211.1198.3214.6240.9222.3240.9271.0246.3267.3301.1275.6299.0336.7297.4321.9361.4333.4361.4406.5369.5400.9451.6413.4448.4505.1444.6481.9542.0492.6534.5602.2551.2597.9673.457.057.157.264.765.065.472.572.873.380.480.681.188.288.488.997.197.598.2108.8109.2109.9120.6120.9121.6132.2132.6133.3145.1145.6146.5160.8161.3162.2176.3176.8177.898.698.898.9110.5110.7111.1125.2125.4125.8140.0140.2140.5153.3153.6154.1165.7166.0166.6187.8188.1188.7209.9210.2210.8230.0230.4231.2250.5250.9251.6279.9280.3281.1306.6307.2308.2161.6175.1196.9183.6199.2224.3205.2222.8251.3226.7246.4278.4254.0276.2312.0275.4298.8336.4307.7334.2377.0340.0369.6417.6380.9414.2468.0410.3445.6502.6453.4492.9556.7507.9552.3624.064.264.364.472.672.973.481.581.782.190.390.490.798.999.199.4109.0109.4110.1122.2122.5123.1135.4135.6136.0148.4148.6149.1162.9163.3164.1180.5180.8181.4197.8198.2198.8108.0108.1108.3121.4121.6121.9137.1137.3137.6152.8152.9153.2168.0168.2168.6182.1182.4182.9205.7205.9206.3229.3229.4229.8252.0252.3252.8274.3274.6275.1305.7305.9306.4336.0336.4337.1148.7161.5182.1168.4183.1207.0187.6204.2231.1206.7225.2255.3231.0252.1286.1252.6274.7310.4281.3306.3346.7310.1337.9382.9346.5378.2429.1375.1408.4462.2413.4450.5510.5462.0504.2572.272.472.572.681.882.082.591.891.992.2101.7101.7101.8111.3111.4111.6122.7123.1123.7137.6137.8138.2152.6152.6152.8166.9167.1167.3183.5183.8184.3203.5203.5203.7222.5222.7223.1119.0119.1119.3134.3134.4134.7151.3151.4151.5168.3168.3168.4185.3185.4185.7201.5201.7202.1226.9227.0227.3252.4252.4252.5277.9278.2278.5302.6302.7303.1336.5336.6336.7370.6370.9371.4TypeAmbient temperature o CCooling capacity table for LPCA 055-170RMBNOTESBold values show nominal cooling capacities.Absorbed power and current refers to the compressor.Above figures are valid for water ¢t = 5 Ô C.

4. Water pressure drop curvesLPCA 055-170RMBPD1009080701 2 3 4 5 6 7605040kpa30201515203040 501000 x I/h607080100WF150NOTESPD: pressure drop through the unitWF: water flow rate water heat exchanger1. LPCA 055-060RMB2. LPCA 070RMB3. LPCA 075-085RMB4. LPCA 090-100RMB5. LPCA 115RMB6. LPCA 125-135-150RMB7. LPCA 170RMBETHYLENE GLYCOL CORRECTION FACTORS% ETHYLENE GLYCOL BY VOLUMEFreezing pointo COutput dutykWInput powerkWEquivalent Flow rateL/HEquivalent Pressure drop kPaUNIT 10-40,990,991,021,0620-90,980,981,041,1230-150,970,981,081,1840-230,960,971,131,25Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 9

5. Operation rangeOOutdoor Temperature ( CDB)COOLING4745NOTESProtect the water circuit against freezing1840-56 15Leaving watertemperature( o C)Required continous linear fan speed regulation control.- The accompanying operating limits are for general guidance only. It may bepossible for certain units to operate outside the confines of the graph. Pleasecontact Interklima if further clarification is required.- For operation with leaving water temperature below 6 o C it is required to confirmwith Interklima at the time of order and the addition of glycol into the system.6. Sound dataTypeLPCA-055LPCA-060LPCA-070LPCA-075LPCA-085LPCA-090LPCA-100LPCA-115LPCA-125LPCA-135LPCA-150LPCA-170PowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mPowerPressure @1 mPressure @10 mdB(∞)91836391836391836391836391836394866694866694866694866696886896886896886863837555837555837555837555837555857757857757857757857757867858867858867858Octave band center frequency (Hz)125817353817353817353817353817353837555837555837555837555847656847656847656250807252807252807252807252807252827454827454827454827454837555837555837555500857757857757857757857757857757877959877959877959877959888060888060888060100088806088806088806088806088806090826290826290826290826291826291826291826220009183639183639183639183639183639385659385659385659385659486669486669486664000847556847556847556847556847556857757857757857757857757867858867858867858800072644472644472644472644472644474664674664674664674664675674775674775674710Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

7.3 LPCA 135-170HMB307,512502300A2200220012001300 130052001300TYPELPCA 055LPCA 060LPCA 070LPCA 075LPCA 085LPCA 090LPCA 100LPCA 115LPCA 125LPCA 135LPCA 150LPCA 170A200020001500150015002280228022802250225022502250B285285337337337337337337342342342342B220012Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

8. Refrigerant circuit diagramsLPCA 055-085RMB562745688473 33311LPCA 090-125RMB337 4 86 554685612847NOTES1. Tandem Compressors2. Shell and tube heat exchanger3. Condenser coils4. Filter dryer5. Expansion device (Thermal exp. valve)6. Solenoid valve7. Shut off valve8. Sight glass73 3 3 31 1Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 13

LPCA 135-170RMB333 3117 486554568568642784773 3 3 311NOTES1. Tandem Compressors2. Shell and tube heat exchanger3. Condenser coils4. Filter dryer5. Expansion device (Thermal exp. valve)6. Solenoid valve7. Shut off valve8. Sight glass14Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

9. Wiring diagrams9.1 LPCA 055-085RMBCONTROL CIRCUITL1L2L3NFROM POWER CIRCUITF1 F2 VC12AC ALL GND12AC 12DC TK1REMOTE ON-OFFGNDID5OFFONST4ID4S33SST3ID3S22SST2ID2S11SST1ID112AC ALL GND12AC 12DC TK2GNDID10NCID9ID11ID8S44SST6ID7ST5ID6+220V12VTLHLHFTTT_STC1LP2LP1C1 P2 F2 P1 F1FLOW SWITCHTC4TC3SW C4ENERGY 400CC1CC3123 45 6 7 89 10SV1SV2ATALALSV1SV2HCCC1CC2HP2P2 P1TTTF2TF1C3C2Ltc1Ltc2EXPANSIONCC3CC4HP1TC2RELAY 9RELAY 10NNPCF1CF2Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 15

F9.2 LPCA 055-085RMBL1L2L3NPESM1POWER CIRCUITFCHFC1FC2FC3FC4FF1FF2CC1CC2CC3CC4CH1CH2CH3CH4CC1CC2CC3CC4CF1CF2CH1CH2CH3CH4R SVCTNU1V1 W1U2 V2 W2U3V3 W3U4 V4 W4UF1 VF1 WF1UF2 VF2 WF2NNNNCM1CM2CM3CM4SF1,2SF3,4LEGENDF1 CONTROL CIRCUIT BREAKERF2 LOW VOLTAGE (12 V AC) CIRCUIT BREAKERFF1 CIRCUIT 1 FANS CIRCUIT BREAKERFF2 CIRCUIT 2 FANS CIRCUIT BREAKERVC VOLTAGE SURVEYORCC1 COMPRESSOR 1 CONTACTORCC2 COMPRESSOR 2 CONTACTORCC3 COMPRESSOR 3 CONTACTORCC4 COMPRESSOR 4 CONTACTORSV1 CIRCUIT 1 LIQUID LINE SOLENOID VALVESV2 CIRCUIT 2 LIQUID LINE SOLENOID VALVETC1 COMPRESSOR 1 THERMAL PROTECTIONTC2 COMPRESSOR 2 THERMAL PROTECTIONTC3 COMPRESSOR 3 THERMAL PROTECTIONTC4 COMPRESSOR 4 THERMAL PROTECTIONTF CONDENSER FANS THERMAL PROTECTIONHP1 HIGH PRESSURE PRESSOSTAT CIRCUIT 1LP1 LOW PRESSURE PRESSOSTAT CIRCUIT 1HP2 HIGH PRESSURE PRESSOSTAT CIRCUIT 2LP2 LOW PRESSURE PRESSOSTAT CIRCUIT 2S1 ENTERING WATER TEMPERATURE SENSORS2 LEAVING WATER TEMPERATURE SENSORS3 CIRCUIT 1 COIL TEMPERATURE SENSORS4 CIRCUIT 2 COIL TEMPERATURE SENSORSM1 GENERAL CIRCUIT BREAKERCM1 COMPRESSOR 1(CIRCUIT 1)CM2 COMPRESSOR 2 (CIRCUIT 1)CM3 COMPRESSOR 3 (CIRCUIT 2)CM3 COMPRESSOR 4 (CIRCUIT 2)SF1,2 CIRCUIT 1 FANSSF3,4 CIRCUIT 2 FANSFC1 COMPRESSOR 1 CIRCUIT BREAKERFC2 COMPRESSOR 2 CIRCUIT BREAKERFC3 COMPRESSOR 3 CIRCUIT BREAKERFC4 COMPRESSOR 4 CIRCUIT BREAKERFCH COMPRESSORS CRANKCASE HEATERSCIRCUIT BREAKERCH1 CRANKCASE HEATER COMPRESSOR 1CH2 CRANKCASE HEATER COMPRESSOR 2CH3 CRANKCASE HEATER COMPRESSOR 3CH4 CRANKCASE HEATER COMPRESSOR 4CF1 CIRCUIT 1 FANS CONTACTORCF2 CIRCUIT 2 FANS CONTACTORCC1 COMPRESSOR 1 CONTACTORCC2 COMPRESSOR 2 CONTACTORCC3 COMPRESSOR 3 CONTACTORCC4 COMPRESSOR 4 CONTACTORTR1 TRANSFORMER 220/12V ACALARME00: REMOTE OFF IN POSITION OFFE01: HIGH PRESSURE CIRCUIT 1 / CIRCUIT 1 FANS THERMAL PROT.E02: LOW PRESSURE CIRCUIT 1E03: THERMAL SWITCH PROTECTION COMP.1E06: SENSOR ST2 FAULTE07: SENSOR ST3 FAULTE13: THERMAL SWITCH PROTECTION COMP.2E23: THERMAL SWITCH PROTECTION COMP.3E33: THERMAL SWITCH PROTECTION COMP.4E21: HIGH PRESSURE CIRCUIT 2 / CIRCUIT 1 FANS THERMAL PROT.E22: LOW PRESSURE CIRCUIT 2E27: SENSOR ST6 FAULTE40: SENSOR ST1 FAULTE41: FLOW SWITCH OR PUMP THERMAL PROTECTIONFIELD CONNECTIONS220 V ACCPTHSWONOFFALALC-P PUMP COMMAND (220 V AC)T-H PUMP THERMAL PROTECTION (DRY CONTACT)F-SW DIFFERENTIAL WATER PRESSURE SWITCH(DRY CONTACT)ON-OFF REMOTE ON-OFF SWITCH (DRY CONTACT)AL-AL ALARM SIGNAL (N.O. CONTACT)220 V ACPUMP COMMAND (220 V AC)PUMP THERMAL PROTECTIONDIFFERENTIAL WATER PRESSURE SWITCHREMOTE SWITCH ON-OFFALARM SIGNAL (N.O. CONTACT)ENTERING WATER TEMP.SENSOR (ST1)LEAVING WATER TEMP. SENSOR (ST2)CIRCUIT 1 COIL TEMPERATURE SENSOR (ST3)CIRCUIT 2 COIL TEMPERATURE SENSOR (ST6)CIRCUIT 1 FANS THERMAL PROTECTIONCIRCUIT 2 FANS THERMAL PROTECTIONCOMPRESSOR 1 THERMAL PROTECTIONCOMPRESSOR 2 THERMAL PROTECTIONCOMPRESSOR 3 THERMAL PROTECTIONCOMPRESSOR 4 THERMAL PROTECTIONHIGH PRESSURE PRESSOSTAT CIRCUIT 1LOW PRESSURE PRESSOSTAT CIRCUIT 1HIGH PRESSURE PRESSOSTAT CIRCUIT 2LOW PRESSURE PRESSOSTAT CIRCUIT 2220 V FOR THERMAL PROTECTION COMP. 1220 V FOR THERMAL PROTECTION COMP. 2CIRCUIT 1 SOLENOID VALVECRANKCASE HEATER COMPRESSOR 1CRANKCASE HEATER COMPRESSOR 2220 V FOR THERMAL PROTECTION COMP. 3220 V FOR THERMAL PROTECTION COMP. 4CIRCUIT 2 SOLENOID VALVECRANKCASE HEATER COMPRESSOR 3CRANKCASE HEATER COMPRESSOR 4COMMAND FOR ANTIFREEZE HEATERS(OPTIONAL)SWONOFFCPTHFALALSF1TF2TC1TC21S2S3S4TTC3TC4HP1LP1HP2LP2LTC1LTC2SV1CH1CH2LTC3LTC4SV2CH3CH4ANSV1SV216Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

9.3 LPCA 090-125RMBL1NF1VCMASTERCONTROL CIRCUITLTC1-6CONNECTIONWITH SLAVECC1CC2SV1CC3CC4SV2C PAL220 V ACALCF1CF2TR1F2Rx+GNDC1NO1NO2NO3C1C4NO4NO5NO6C4C7NO7C7NO8C8NC8C9NO9NO10NO11C9J11 J12J13 J14 J15 J16J17 J18MASTER PCO2J1 J2 J3 J4 J5 J6 J7 J8NO12C12NC12NO13GGOC13NC13CC5CC6SV3CF3Rx-Rx-GGOB1B2B3GRDVDCB4BC4B5BC5VGVGOY1Y2Y3Y4ID1ID2ID3ID4ID5ID6ID7ID8IDC1B6B7B8GRDID9ID10ID11ID12IDC9ID13hID13IDc13ID14ID14hS TEMPERATURES TEMPERATURE34Rx+GNDC1NO1NO2NO3C1C4NO4NO5NO6C4STEMPERATURE 1F SWON OFFTTHHLP1LP1TTC1C1TTC2C2LP2LP2TTC3C3TTC4C4B1B2B3GRDVDCB4BC4B5BC5VGVGOY1Y2Y3Y4ID1ID2ID3ID4ID5ID6ID7ID8IDC1B6B7B8GRDID9ID10ID11ID12IDC9ID13hID13IDc13ID14ID14hC7NO7C7NO8C8NC8C9NO9NO10NO11C9STEMPERATURE 2H P1 TF1H P2 TF2L1NF1VCSLAVECONTROL CIRCUITLTC1-6CONNECTIONWITH MASTERTR1F2J11 J12J13 J14 J15 J16J17 J18SLAVE PCO2J1 J2 J3 J4 J5 J6 J7 J8STEMPERATURE5LP3LP3T TC5C5T TC6C6H P3 TNO12C12NC12NO13C13NC13F3Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 17

9.4 LPCA 090-125RMBL1SM1POWER CIRCUITL2L3NPEFCHFC1FC2FC3FC4FC5FC6FF1FF2FF3CC1CC2CC3CC4CC5CC6CH1CH2CH3CH4CH5CH6CC1CC2CC3CC4CC5CC6CF1 CF2 CF3CH1CH2CH3CH4CH5CH6R SVCTNU1 V1 W1U2 V2 W2U3 V3 W3U4 V4 W4U5 V5 W5U6 V6 W6UF1 VF1 WF1UF2 VF2 WF2UF3 VF3 WF3NNNNNNCM1CM2CM3CM4CM5CM6SF1,2SF3,4SF5,618Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

GOB1B2B3GRDVDCB4BC4B5BC5VGVGOY1Y2Y3Y4ID1ID2ID3ID4CC5CC6SV3ID5ID6ID7CC7CC8SV4ID8IDC1Rx-B6B7B8Rx+GNDGRDC1NO1NO2NO3C1ID9ID10ID11C4NO4NO5NO6C4C7NO7C7NO8C8NC8C9NO9NO10NO11C9ID12IDC9ID13hID13IDc13ID14ID14hG9.5 LPCA 135-170RMBL1NF1VCLTC1-8CONNECTIONWITH SLAVECC1CC2SV1MASTERCONTROL CIRCUITCC3CC4SV2C P220 V ACAL ALCF1CF2TR1F2Rx-Rx+GNDC1NO1NO2NO3C1L1NF1VCSLAVECONTROL CIRCUITLTC1-8CONNECTIONWITH MASTERCF3CF4TR1F2J11 J12J13 J14 J15 J16J17 J18SLAVE PCO2J1 J2 J3 J4 J5 J6 J7 J8S TEMPERATURES TEMPERATURE56LP3LP3TTC5C5TTC6C6LP4LP4T TC7C7T TC8C8NO12C12NC12NO13C13NC13H P3 TF3H P4 TF4GGOC4NO4NO5NO6C4C7NO7C7NO8C8NC8C9NO9NO10NO11C9J11 J12J13 J14 J15 J16J17 J18MASTER PCO2J1 J2 J3 J4 J5 J6 J7 J8S TEMPERATURES TEMPERATURENO1234SF SWON OFFTTHHLP1LP1TTC1C1TTC2C2LP2LP2TTC3C3TTC4C4B1B2B3GRDVDCB4BC4B5BC5VGVGOY1Y2Y3Y4ID1ID2ID3ID4ID5ID6ID7ID8IDC1B6B7B8GRDID9ID10ID11ID12IDC9TEMPERATURE 1ID13hID13IDc13ID14ID14hC12NC12NO13C13NC13STEMPERATURE 2H P1 TF1H P2 TF2Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 19

9.6 LPCA 135-170RMBL1L2L3NPESM1FC1FC2FC3FC4FC5FC6FC7FC8POWER CIRCUITFF1FF2FF3FF4FCHCC1CC2CC3CC4CC5CC6CC7CC8CC1U1 V1 W1CC2U2 V2 W2CC3U3 V3W3CC4U4 V4 W4CC5U5 V5W5CC6U6 V6 W6CC7U7 V7W5CC8U8 V8 W8CF1 CF2 CF3 CF4UF1VF1WF1UF2VF2WF2UF3VF3WF3UF4VF4WF4CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8N N N N N N N NR S TVC NCM1CM2CM3CM4CM5CM6CM7CM8SF1,2SF3,4SF5,6SF7,8LEGENDF1 CONTROL CIRCUIT BREAKER (220 V)F2 CONTROL CIRCUIT BREAKER(24 V)S1 ENTERING WATER SENSORS2 LEAVING WATER SENSORS3 CIRCUIT 1 CONDENSER COIL TEMP. SENSORS4 CIRCUIT 2 CONDENSER COIL TEMP. SENSORS5 CIRCUIT 3 CONDENSER COIL TEMP. SENSORS6 CIRCUIT 4 CONDENSER COIL TEMP. SENSORTC1 COMPRESSOR 1 THERMAL PROTECTIONTC2 COMPRESSOR 2 THERMAL PROTECTIONTC3 COMPRESSOR 3 THERMAL PROTECTIONTC4 COMPRESSOR 4 THERMAL PROTECTIONTC5 COMPRESSOR 5 THERMAL PROTECTIONTC6 COMPRESSOR 6 THERMAL PROTECTIONTC7 COMPRESSOR 7 THERMAL PROTECTIONTC8 COMPRESSOR 8 THERMAL PROTECTIONHP1 HIGH PRESSURE PRESSOSTAT CIRCUIT 1LP1 LOW PRESSURE PRESSOSTAT CIRCUIT 1HP2 HIGH PRESSURE PRESSOSTAT CIRCUIT 2LP2 LOW PRESSURE PRESSOSTAT CIRCUIT 2HP3 HIGH PRESSURE PRESSOSTAT CIRCUIT 3LP3 LOW PRESSURE PRESSOSTAT CIRCUIT 3HP4 HIGH PRESSURE PRESSOSTAT CIRCUIT 4LP4 LOW PRESSURE PRESSOSTAT CIRCUIT 4TF1 CIRCUIT 1 CONDENSER FANS THERMAL PROT.TF2 CIRCUIT 2 CONDENSER FANS THERMAL PROT.VC VOLTAGE SURNEYORFCH CRANKCASE HEATERS COMP. 1-8CIRCUIT BREAKERSV1 LIQUID LINE SOLENOID VALVE CIRCUIT 1SV2 LIQUID LINE SOLENOID VALVE CIRCUIT 2SV3 LIQUID LINE SOLENOID VALVE CIRCUIT 3SV4 LIQUID LINE SOLENOID VALVE CIRCUIT 4CM1 COMPRESSOR 1 (CIRCUIT 1)CM2 COMPRESSOR 2 (CIRCUIT 1)CM3 COMPRESSOR 3 (CIRCUIT 2)CM4 COMPRESSOR 4 (CIRCUIT 2)CM5 COMPRESSOR 5 (CIRCUIT 3)CM6 COMPRESSOR 6 (CIRCUIT 3)CM7 COMPRESSOR 7 (CIRCUIT 4)CM8 COMPRESSOR 8 (CIRCUIT 4)CF1 CIRCUIT 1 FANS CONTACTORCF2 CIRCUIT 2 FANS CONTACTORCF3 CIRCUIT 3 FANS CONTACTORCF4 CIRCUIT 4 FANS CONTACTORSM1 GENERAL CIRCUIT BREAKERFC1 COMPRESSOR 1 CIRCUIT BREAKERFC2 COMPRESSOR 2 CIRCUIT BREAKERFC3 COMPRESSOR 3 CIRCUIT BREAKERFC4 COMPRESSOR 4 CIRCUIT BREAKERFC5 COMPRESSOR 5 CIRCUIT BREAKERFC6 COMPRESSOR 6 CIRCUIT BREAKERFC7 COMPRESSOR 7 CIRCUIT BREAKERFC8 COMPRESSOR 8 CIRCUIT BREAKERFF1 CIRCUIT 1 FANS CIRCUIT BREAKERFF2 CIRCUIT 2 FANS CIRCUIT BREAKERFF3 CIRCUIT 3 FANS CIRCUIT BREAKERFF4 CIRCUIT 4 FANS CIRCUIT BREAKERTR1 TRANSFORMER 220V / 24VCC1 COMPRESSOR 1 CONTACTORCC2 COMPRESSOR 2 CONTACTORCC3 COMPRESSOR 3 CONTACTORCC4 COMPRESSOR 4 CONTACTORCC5 COMPRESSOR 5 CONTACTORCC6 COMPRESSOR 6 CONTACTORCC7 COMPRESSOR 7 CONTACTORCC8 COMPRESSOR 8 CONTACTORSF1,2 CIRCUIT 1 FANSSF3,4 CIRCUIT 2 FANSSF5,6 CIRCUIT 3 FANSSF7,8 CIRCUIT 4 FANSCH1 CRANCKASE HEATER COMPRESSOR 1CH2 CRANCKASE HEATER COMPRESSOR 2CH3 CRANCKASE HEATER COMPRESSOR 3CH4 CRANCKASE HEATER COMPRESSOR 4CH5 CRANCKASE HEATER COMPRESSOR 5CH6 CRANCKASE HEATER COMPRESSOR 6CH7 CRANCKASE HEATER COMPRESSOR 7CH8 CRANCKASE HEATER COMPRESSOR 8220 V ACFEILD CONNECTIONSSWONOFFCPTHFALALC-P PUMP COMMAND (220 V)T-H PUMP THERMAL PROTECTION (DRY CONTACT)F-SW DIFFERENTIAL WATER PRESSURE SWICTH(DRY CONTACT)AL-AL ALARM SIGNAL (N.O. CONTACT)ON-OFF REMOTE ON-OFF SWITCH (DRY CONTACT)PUMP COMMAND (220VAC)220 V ACPUMP THERMAL PROTECTIONFLOW SWITCHALARM (N.O.CONTACT)REMOTE SWITCH ON-OFFENTERING WATER TEMPERATURE SENSOR S1LEAVING WATER TEMPERATURE SENSOR S2CIRCUIT 1 CONDENSER COIL TEMPERATURE SENSOR S3CIRCUIT 2 CONDENSER COIL TEMPERATURE SENSOR S4CIRCUIT 3 CONDENSER COIL TEMPERATURE SENSOR S5CIRCUIT 4 CONDENSER COIL TEMPERATURE SENSOR S6CIRCUIT 1 FANS THERMAL PROTECTIONCIRCUIT 2 FANS THERMAL PROTECTIONCIRCUIT 3 FANS THERMAL PROTECTIONCIRCUIT 4 FANS THERMAL PROTECTIONCOMPRESSOR 1 THERMAL PROTECTIONCOMPRESSOR 2 THERMAL PROTECTIONCOMPRESSOR 3 THERMAL PROTECTIONCOMPRESSOR 4 THERMAL PROTECTIONCOMPRESSOR 5 THERMAL PROTECTIONCOMPRESSOR 6 THERMAL PROTECTIONCOMPRESSOR 7 THERMAL PROTECTIONCOMPRESSOR 8 THERMAL PROTECTIONHIGH PRESSURE PRESSOSTAT CIRCUIT 1LOW PRESSURE PRESSOSTAT CIRCUIT 1HIGH PRESSURE PRESSOSTAT CIRCUIT 2LOW PRESSURE PRESSOSTAT CIRCUIT 2HIGH PRESSURE PRESSOSTAT CIRCUIT 3LOW PRESSURE PRESSOSTAT CIRCUIT 3HIGH PRESSURE PRESSOSTAT CIRCUIT 4LOW PRESSURE PRESSOSTAT CIRCUIT 4220 V °π∞ ∆√ £∂ƒªπ∫√ ∆√À 1Ô˘ Àªπ∂∆∏220 V FOR THERMAL COMPRESSOR 2220 V FOR THERMAL COMPRESSOR 3220 V FOR THERMAL COMPRESSOR 4220 V FOR THERMAL COMPRESSOR 5220 V FOR THERMAL COMPRESSOR 6220 V FOR THERMAL COMPRESSOR 7220 V FOR THERMAL COMPRESSOR 8CRANKCASE HEATER COMPRESSOR 1CRANKCASE HEATER COMPRESSOR 2CRANKCASE HEATER COMPRESSOR 3CRANKCASE HEATER COMPRESSOR 4CRANKCASE HEATER COMPRESSOR 5CRANKCASE HEATER COMPRESSOR 6CRANKCASE HEATER COMPRESSOR 7CRANKCASE HEATER COMPRESSOR 8LIQUID LINE SOLENOID VALVE CIRCUIT 1LIQUID LINE SOLENOID VALVE CIRCUIT 2LIQUID LINE SOLENOID VALVE CIRCUIT 3LIQUID LINE SOLENOID VALVE CIRCUIT 4220 V FOR ANTIFREEZE HEATERS (OPTIONAL)SWALALONOFFF1TF2TF3TF4TC1TC2TC3TC4TC5TC6TC7TC8HP1LP1P3LP3CPTHFS1S2S3S4S5S6THP2LP2HP4 HLP4LTC1LTC2LTC3LTC4LTC5LTC6LTC7LTC8CH1CH2CH3CH4CH5CH6CH7CH8SV1SV2SV3SV4∞¡20Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

10. 1. Installation10.1 Selection of location - service spaceThe LPCA-RMB unit should be installed in a location that meetsthe following requirements:1. The foundation is strong enough to support the weight of theunit, and the floor is flat to prevent vibration and noisegeneration.2. The space around the unit is adequate for servicing and theminimum space air inlet and air outlet is available. If severalunits are being installed side by side in parallel, the minimumservice space between them must be taken into account.3. There is no danger of fire due to leakage of inflammable gas.4. Ensure that water cannot cause any damage to the location incase it drips out of the unit.5. Make sure that the air inlet and outlet of the unit are notpositioned towards the main wind direction.Frontal wind shalldisturb the operation of the unit.If necessary, use awindscreen to block the wind.6. In heavy snowfall areas, select an installation site where snowshall not affect operation of the unit.7. Make sure that the unit can be fixed directly on concrete.8. In order to avoid the transmission of vibration from theoperating unit to its carrying structure, the use of antivibrationmaterial to install under the supports of the unit isrecommended. It is suggested to install a rubber pad betweenthe points of support and the base of the unit, or springantivibration mounts under each point of support of the unit.4000mm2000mm2000mm2000mm2000mmInterklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 21

10.2 Centre of gravityLPCA 055-085RMB11001300LPCA 090-125RMB1950110022Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

LPCA 135-170RMB26001100Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 23

10.3 Recommendations concerning the hydraulic circuitñ All field connections must be provided by a licensedtechnician and must comply with the relevant local andnational codes.ñ Evaporator water connections should be made in accordancewith the unit outlook respecting the water inlet – and outlet.ñ Water piping to be arranged so that the circulating pumpdischarges directly into the evaporator.ñ Install a flow switch or water differential pressostat (standardcomponent) in the water outlet piping to prevent the unit fromoperating at a water flow, which is too low. A terminal isprovided in the switch box for the electrical connection of theflow switch in the control circuit.ñ To avoid erosion, it is recommended to install a filter in thewater inlet pipe.ñ It is essential to install a thermometer in the water inlet/ outletpipe to check temperatures.ñ Provide heat insulation with suitable vapour barrier around thechilled water piping to prevent condensation and capacity loss.ñ Provide drain connections at all low points of the system topermit complete drainage for maintenance and/ or shutdownñ Air vents should be provided at all high points in the systemlocated were they are easily accessible for servicing. Thewater inlet pipe is specially designed to obtain a complete airpurge of the evaporatorñ Install an expansion tank on the suction side of the waterpump so that the water pressure on the pump suction will bepositive.ñ To avoid frequent on/off operation of the compressor, aminimum water volume is required in the system (table 10.4)ñ To assure proper operation of the unit, the water flow throughthe evaporator must be within the specified in (table 10.4)7151331 24565145731162 910455118125Example with one central pump824Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

15713531 246755145556.1 56.1 56.1 531216910412 1155555858Example with internal loop pump and external zoon pumpsNOTES1. Flexible2. Thermometer3. Manometer4. Air vent5. Shut of valve6. Pump (primary circuit)6.1 Pump (secondary circuit)7. Water filter8. Drainage9. Flow switch (optional)10. Balancing valve11. Buffer tank12. Electric resistance13. Automatic make up water valve14. Expansion membrane15. Check valve16. Safety valveInterklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 25

10.4 Watercharge, flow and qualityTo ensure proper operation of the unit, a minimum water volumeis required in the system and the water flow must be within theoperation range as specified in the table.LPCA 055RMBLPCA 060RMBLPCA 070RMBLPCA 075RMBLPCA 085RMBLPCA 090RMBLPCA 100RMBLPCA 115RMBLPCA 125RMBLPCA 135RMBLPCA 150RMBLPCA 170RMBMinim umwatervolume (l)112912881445160417941931216824052690289132073587Minim umwater flow(l/h)147881685518914209642345625286283663145535188378194193746912Nominalwater flow(l/h)3237036911414354597651428553676216168955771258288791934102839Maxim umwater flow(l/h)38915440004977350000510006654369000710009260199524103000104000Be sure the water quality is in accordance with the specificationsbelowNOTESThe above tables are purelyindicative and non-bindingItemsItems to be controlled:PH AT 25 Ô C∂lectrical conduct (mS/m) at 25 Ô CChloride ion (mg CI-/I)Sulfate ion (mg SO 2/4/IM-alkalinity (ph 4.8) (mg SO3/I)Total hardness (mg CaCO3/I )Calcium hardness (mg CaCO3/I)Silica ion (mg SiO2/IItems to be referred to:Iron (mg Fe/I)Copper (mg Cu/I)Sulfide ion (mg S2-/I)Amonium ion (mg NH+4/IRemaining chloride (mg CI/I)Free carbide (mg SO2/I)Stability indexCirculatingwater 20CEvaporator water6.8 - 8.0below 30below 50below 50below 50below 70below 50below 30below 1.0below 1.0Not detectablebelow 0.3below 0.25below 0.4-Supply water6.8 - 8.0below 30below 200below 50below 50below 70below 50below 30below 0.3below 0.1Not detectablebelow 0.1below 0.3below 4.0-Circulatingwater 20C-60C7.0 - 8.0below 30below 30below 30below 50below 70below 50below 30Heated waterbelow 1.0below 1.0Not detectablebelow 0.1below 0.1below 0.4-Supply water7.0 - 8.0below 30below 30below 30below 50below 70below 50below 30below 0.3below 1.0Not detectablebelow 0.1below 0.3below 4.0-Tendencyif out of criteriacorrosion + scalecorrosion + scalecorrosioncorrosionscalescalescalescalecorrosion + scalecorrosioncorrosioncorrosioncorrosioncorrosioncorrosion + scale10.5 Operating pressure of therefrigerant circuitIt is important to check the high and low pressure of therefrigerant circuit to ensure the proper operation of the unitand to guarantee that the rated output shall be obtained.Attention:The pressures measured shall vary between a maximumand minimum value, depending on the water andambient temperatures at the moment of measurement.Cooling mode(region)low pressurehigh pressureMinim um(outdoor temp. 15 Ô NominalCDB)(leaving water temp 6 Ô (outdoor temp. 35 Ô MaximumCDB)C) (leaving water temp, 7 Ô (outdoor temp. 38 Ô CDB)C) (leaving water temp, 25 Ô C)3,5-4 bar17-19 bar4-5 bar21-23 bar5,5-6 bar24-26 bar26Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

10.6 Digital controlerUser interface LPCA 055-085RMBThe interface on the front panel of the instrument can be used tocarry out all the operations connected to the use of the instrument,and in particular to:Set operating modeCheck the state of resourcesRespond to alarm situations10.6.1 Keys1 23 4Front panel of the instrumentSelects operating mode (heating/defrost refersto LPCA-H heat pump models only):If the heating mode is enabled, each time thekey is pressed the following sequence occurs:Stand-by cooling heating stand byIf cooling mode is enabled:heating Stand-by cooling heating stand byIn menu mode, this key acts as a SCROLL UPor UP key (increasing value).10.6.2 Displays10.6.2.1 DisplayNormal display shows:ñ Regulation temperature in tenths of degreescelsius with a decimal point, or in degreesfahrenheit without a decimal point.ñ The alarm code, if at least one alarm is active. Ifmultiple alarms are active, the one with greaterpriority shall be displayed, according to the Tableof Alarms.ñ If temperature control is not analogue anddepends on the status of a digital input (ST1 orST2 configured as digital inputs), the “On” or“Off” label shall be displayed, depending onwhether temperature control is active or not.ñ When in menu mode, the display depends on thecurrent position; labels and codes are used tohelp the user identify the current function.ñ Decimal point: when displaying hours of operation,indicates that the value must be multiplied x 100.10.6.2.2 LedLed 1 compressor 1 (circuit 1).1 ON if compressor 1 is active.OFF if compressor 1 is off.Rapid BLINK if safety timing is in progress.Slow BLINK if compressor is currently set to defrost(heat pump version).Resets alarms, and turns the instrument onand off. Press once to reset all manually resetalarms not currently active.Hold down the key for 2 seconds to turn theinstrument from on to off or vice versa. When it isoff, only the decimal point remains on the display.In menu mode this key acts as a SCROLL DOWNor DOWN key (decreasing value).Pressing the “mode” and “on-off” keys at thesame time.If you press both keys at the same time andthen release within 2 seconds, you shall moveone level deeper in the display menu.If you press both keys for more than 2 secondsyou shall move one level up.If you are currently viewing the lowest level inthe menu and you press both keys and releasewithin 2 seconds, you shall go up one level.234Led 2 compressor 2 (circuit 1).ON if compressor 2 is active.OFF if compressor 2 is not active.Rapid BLINK if safety timing is in progress.low BLINK if compressor 2 is currently defrosting.Led 3 compressor 3 (circuit 2).ON if compressor 3 is active (compressor2).OFF if compressor 3 is not active.Rapid BLINK if safety timing is in progress.Slow BLINK if compressor 3 is defrosting.Led 4 compressor 4 (circuit 2).ON if compressor 4 is active.OFF if compressor 4 is not active.Rapid BLINK if safety timing is in progress.Slow BLINK if compressor 4 is defrosting.Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 27

Defrost led (heat pump version)ON if defrosting is in progressOFF if defrosting is disabled or has been completedBLINK if timing is in progress (defrost interval)10.7 Remote keyboardThe remote keyboard on the display is an exact copy of theinformation displayed on the instrument, with the same leds;Electrical heater/boiler ledON if the internal anti-freeze electrical heater or boiler is onOFF if the internal anti-freeze electrical heater or boiler is offHeating led (heat pump version)ON if the device is in heating modeCooling ledON if the controller is in cooling modeIf neither the HEATING led nor the COOLING led is on, thecontroller is in STAND-BY modeIt performs exactly the same functions as those described in thedisplay section.The only difference is in use of the UP and DOWNkeys (to increase and decrease value), which are separate fromthe MODE and ON/OFF keys.Connection with the controller is illustrated below:PCB CONTROL BOARDS + -BACK VIEW REMOTE242526S + -28Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

10.8 User interface LPCA 090-170RMBThe interface on the front panel of the instrument can be used tocarry out all the operations connected to the use of the instrument,and in particular to:ñ Set operating modeñ Respond to alarm situationsñ Check the state of resourcesñ Displays the values measured by the probes.ñ Displays the values relating to the maintenance of the devices(working hours and operating hourcounter reset.ñ Accesses the group of screens for printer management.ñ Displays the status of inputs and outputs(both digital and analogue.ñ Allows the display/programming of the clock.ñ Allows the Set-Point setting.ñ Allows the various operating parameters to be set(safety parameters, thresholds).ñ By pressing simultaneously these buttons you access the unit configuration (number ofinstruments connected to the pCO2, scale setting, probe calibration etc.).ñ Displays the version of the application program and other information.ñ 1. ON-OFF: switches the unit on or off. The green LED that lights up in the button showsif the machine is turned on.2. Alarm button: used for displaying or manually resetting the alarms and for silencing thebuzzer. If the button light up (red), at least one alarm has been detected.3. The arrow pointing upwards to manage the currently displayed screen and to set the valuesof the control parameters (not back-lit).4. The arrow pointing downwards to manage the currently displayed screen and to set thevalues of the control parameters (not back-lit).5. Enter button: to confirm the set data. The button is constantly back-lit (yellow) indicatingthe presence of mains power.Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 29

11.Guide specificationsLPCA 055-170RMBThe supply, transport to jobsite, installation, commissioning andstart up of an air cooled water chiller with the following technicalcharacteristics. The unit shall be factory assembled, charged withR407C refrigerant and factory tested.The capacity of the unit shall be no less than:Ambient air temperature (DB)ÆCEntering water temperatureÆCLeaving water temperatureÆCThe unit shall operate unhindered within 6 to 15ÆC water outlettemperature, 3.5 to 7ÆC water temperature difference and 5 up to45ÆC ambient air temperature.The structural requirements shall be the following:UNIT HOUSINGThe unit housing shall be fabricated from heavy gauge galvanizedsteel sheets, formed to ensure maximum rigidity that shallguarantee and preserve the unit operation during the years. Allmetal parts after fabrication shall be degreased phosphatized, andelectrostatically powder coated with epoxy- polyester RAL 9002coating of a thickness of 60-70 m. The corrosion resistancetreatment must successfully withstand a salt spray test of 500hours, according to ASTM B- 117. All components shall beassembled exclusively together using bolts, without welding. Theunit shall have removable access panels, designed in such amanner as to permit easy access to internal compartments onlyby authorized personnel. Electrical and electronic equipment andcomponents for proper unit operation shall be located in a weatherproof (IP 55) electrical panel with access via only a special key.COMPRESSORSShall be of the hermetic tandem scroll type, with low noise andvibration levels, specially optimized for use with R407c refrigerant.They shall be equipped with a crank case electrical heater, toseparate refrigerant and oil when the unit is not operating. Theyshall also include internal protection against overloading orelectrical spikes. The compressors shall be mounted on specialant vibration rubber mounts to absorb and eliminate any vibrationthat can be generated from the unit base.AIR HEAT EXCHANGERThe air hear exchangers shall be manufactured from seamlesscopper tubes and an outside diameter of 9.52mm (3/8'') of highquality according to ASTM B 280, and shall be inner grooved toachieve optimized heat transfer between refrigerant and tube. Thefins shall be manufactured from aluminium. The fins shall becontinuous across the heat exchanger and the fin surface shall bewaffle formed and louvered so as to increase the fin rigidity andheat transfer. The combination of internally grooved copper tubingand louvered fins must result in a heat transfer performance 30%superior to that of a conventional coil.The assembly of the finned pack shall be achieved by mechanicalexpansion in such a way as to form a perfect mechanical bondwith the fins. For his purpose, the fin holes shall have a peripheralextrusion (collar).WATER HEAT EXCHANGERAll units shall be equipped with a Shell and Tube water –directexpansion type evaporator that has multiple cooling circuits, one foreach independent refrigerant circuit. The casing shall be of steel andthe internal tubes of copper. There shall be an air vent valve, drainvalve, probes for water temperature sensors, differential pressureswitch and the whole heat exchanger shall be wrapped in a heavyinsulation material appropriate for external installation.AIR HEAT EXCHANGER FANSThe unit shall be equipped with axial type fans, three phase, and 6poles, internally protected against potential over heating, low noiseand suitable for outdoor installation. The design of the blades andinlet cones shall be aerodynamic, and the fan motor assemblyshall be perfectly, statically and dynamically balanced allowing acompletely vibration free operation. The fan motor assembly shallhave a protective grid against accidental contact with movingparts according to ISO. The fan motor shall be of the external rotortype with permanently lubricated bearings that do not requireservicing. The motor shall be aerodynamically shaped so as not tointerfere with the airflow. The unit shall have the ability to beequipped with a continuous linear fan speed regulation controlaccording to coil temperature.Microprocessor controllerAll units shall be equipped with an electronic programmablecontrol system. This shall allows complete management of all thefunctions of the unit and ensures protection of all vital parts. Itshall have a diagnostics function, permitting easy andstraightforward understanding of all the possible failures andmalfunctions of the unit. All functions and indicators shall appearon the LCD screen. Over 150 programmable parameters shalloffer complete unit management.30Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll

Critical parameters that shall require control are:ñ Start-up / shut down time of compressor.ñ Time delay.ñ Protection against multiple start-up.ñ Water pump time delay in reference to compressoroperation.ñ Inlet/Outlet water temperature.ñ Air heat exchanger temprature.Controlled operational parametersñ Water temperature adjustment in the inlet side duringsummer operation*.ñ Water outlet temperature adjustment in summer operation**.ñ Compressor capacity control.Controlled fault parametersñ Low suction pressure per refrigerant circuit.ñ High discharge pressure per refrigerant circuit.ñ Compressor overload.ñ Fan motor overload.ñ Water pump overload.ñ Flow switch fault.ñ Water sensor error due to bad contact or destruction.ñ Error reading in water outlet low temperature.ñ Compressor operating hour reading.In addition the control shall also includeñ Self diagnostic error of all electronic control sensors.ñ Remote on/ off switch.ñ Remote alarm indication capability.ñ History of operation points and fault codes**.ñ Password access code.Refrigerant circuitThe units shall have multiple refrigerant circuits depending on thesize, one per tandem compressor.Each circuit shall consist of the following:ñ Thermal expansion valve.ñ Filter drier with a replaceable core.ñ Shut off valves.ñ 2-way solenoid valve.ñ Sight glass.ñ High and low pressure gauges for each refrigerant circuit,easily viewed.ñ Service valves.ñ Unit protection shall be provided by a high pressure switchwith manual reset, low pressure protection is a low-pressureswitch with auto reset.ñ Flexible refrigerant pipe on the compressor discharge andsuction lines to avoid vibration and noise.Note:The consultant may if required ad the below metioned optionalaccessories / fuctions.Optional accessoriesMicroprocessor controller optionsñ BMS module interface kit for Bacnet, Lon Works and Trendconnection**.ñ BMS interface kit for Modbus connection.ñ Connection via internet using a device converting the Carelprotocol to 10Mb/s TCP/IP ethernet protocol**.ñ Possibility to send and receive messages using a GSMmodem**.ñ Communication card through RS232 / RS485 serial ports.ñ Extended memory card for up to five thousandsmessages**.ñ Extended memory card 1&2 MB**.ñ Parallel chiller operation with standard controller for unitswith a maximum of eight compressors*.ñ Microprocessor parameter reprogramming card.ñ Compressor running current**.ñ Self diagnostic and adaptive control**.Other unit accessories/optionñ R407c or R22 refrigerant.ñ Condenser fins made of copper or prepainted aluminum, andBlygold treatment for corrosion protection.ñ Glycol for chilled water temperature down to –5 o C.ñ Continuous linear fan speed regulation.ñ High pressure relief valve on compressor discharge.ñ A-meter, V-meter.ñ Compressor noise reduction jacket.ñ Electrical board ventilation fan.ñ Water heat exchanger antifreezing electrical heater.ñ Other custom built options upon request.* For models 055-085** For models 090 – 170Interklima Hydronic systemsLPCA 055-170RMB ñ R407c/Tandem Scroll 31

Engineering Data 2006Products are manufactured in ISO 9001:2000certified factories. ISO 9001:2000 pertains to qualityassurance regarding design, development,manufacturing and installation of productsas well as to services related to the product.Interklima units comply with the European regulations thatguarantee the safety of the productSpecifications subject to change without noticeINTERKLIMA PRODUCTS ARE DISTRIBUTED BY:EGB-µ-3-9-06/06