(The photo of the unit is indicative and may vary depending on the model) HIGH EFFICIENCY ADAPTABILITY MAXIMUM COMPACTNESS Climaveneta Technical Bulletin FOCS3-W 0551 - 4752_201609_EN HCF R134a ELCA_Engine ver.3.6.2.1 FOCS3-W 0551 - 4752 188-1693 kW Water cooled chiller
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(The photo of the unit is indicative and may vary depending on the model)
1.1 PRODUCT FEATURES pg.1.1.1 / 1.1.22.1 PRODUCT PRESENTATION pg.2.1.1 / 2.1.13.1 UNIT STANDARD COMPOSITION pg.3.1.1 / 3.1.24.1 ACCESSORIES pg.4.1.1 / 4.1.75.1 GENERAL TECHNICAL DATA pg.5.1.1 / 5.1.36.1 OPERATING LIMITS pg.6.1.1 / 6.1.37.1 HYDRAULIC DATA pg.7.1.1 / 7.1.18.1 ELECTRICAL DATA pg.8.1.1 / 8.1.39.1 FULL LOAD SOUND LEVEL pg.9.1.1 / 9.1.210.1 DIMENSIONAL DRAWINGS pg.10.1.1 / 10.1.5
The present publication is drawn up by of information only and does not constitute an offer binding upon Climaveneta.Climaveneta has compiled the content of this publication to the best of its knowledge. The data contained herein are subject to change withoutnotice. Climaventa explicitly rejects any liability for any direct or indirect damage, in the broadest sense, arising from or related to the use and/orinterpretation of this publication. All content is copyrighted by Climaveneta.
Liability disclaimer
11.1 VARIABLE FLOW HYDRAULIC GROUP pg. A1 / A512.1 CONDENSATION CONTROL DEVICES pg. B1 / B3
The units highlighted in this publication contain HFC R134a [GWP100 1430] fluorinated greenhouse gases.
Climaveneta as a major player in the world HVAC market and a leading manufacturer of energy efficient, sustainable HVAC solutions, recognizes and supports the diffusion of green certification systems, as an effective way to deliver high performance buildings and improve the quality and the sustainability of the built environment.
Since the first certification system was introduced at the beginning of the 1990s, the demand for certified buildings has grown considerably, as well as the number of standards, rating and certification programs. Operating worldwide Climaveneta has extensive experience with many of them and is active member of Green Building Council Italy.
Climaveneta commitment to develop responsible and sustainable HVAC solutions, is reflected by a full range of premium efficiency products and systems, designed with special care to improve building energy performance ratings, according to major certification protocols, including LEED, BREAM, GREENSTAR, BCA, NABERS, DNGB, HQE and BEAM.
To find out more about how our products contribute to enhanced green certification rating and energy performance of a building, please refer to:http://www.climaveneta.com/GLOBAL/Company/Green-Certifications/QR code
1.2 Maximum efficiency at every load conditionHigh efficiency units, both at part and at full load. The flooded evaporator,dedicated compressors, specifically designed condenser and a specialmanagement for the lubricant separation and recovery, lead FOCS3-Wunits to very competitive efficiency levels, with EER 5.8, ESEER 7.4, IPLV7.7
1.3 Maximum flexibility and adaptabilityMaximum flexibility and adaptability to the needs of the plant thanks to:- continuous modulation of the cooling capacity, guaranteed bysophisticated regulation logics- precision and quickness in the control, in order to guarantee stablewater temperature- management of the variable flow using the VPF or VPF.D signal- pressure drops reduction, thanks to particular layout for the floodedevaporator- compact and essential design, achieved by the construction layout,without base, frame structure and panels. The components are directlyfixed on one another, through fixing brackets- movimentation and on site placement easiness, even in case of smallspaces, added to immediate and complete accessibility duringmaintenance operations
1.4 Optimized compressorsFOCS3-W units are equipped with screw compressors designed in orderto work with low compression ratios, allowing to reach efficiency valueshigher than the ones possible for units with standard screw compressors,both at part and at full load, thanks to a targeted study of the volume ratioand the extension of the application limits.
1.5 Innovative design of the heat exchangersThe exclusive design of the flooded evaporator and of the shell and tubecondenser, both designed and manufactured by Climaveneta, maximizesthe cooling power of the unit and optimizes the compressors’ operationthanks to the high heat exchange coefficients.In the evaporator the presence of the refrigerant in the shell side and ofthe water inside the tubes allows to:- minimize the pressure drops- gain a perfect temperature uniformity as well as the completeevaporation of the refrigerant- cancel any necessity to have heat surfaces dedicated to desuperheating- facilitate cleaning operations
The flooding of the tubes in the evaporator is controlled by an electronicexpansion valve managed but proprietary control logics.
1.6 Lubricant recoveryAn innovative lubricant oil recovery system from the exchangers,combined with the traditional built-in oil separator, allows the compressorsto work always with the correct and appropriate lubification and at thesame time enables the exchange surfaces of the heat exchanger to stayclean, ensuring reliability to the entire system.
High efficiency unit for indoor installation for chilled water production.Semihermetic screw compressors optimized to operate with lowcompression ratio and R134a; shell and tubes condenser, floodedevaporator and electronic expansion valve. High efficiency unit thanks tothe innovative optimized compressors and the high performing heatexchangers.
2.3 HIGH EFFICIENCYVery high efficiency at full and partial load, at the highest market levels,thanks to the adopted technological solutions. These units ensure lowoperating costs and therefore a quick payback time.
2.4 ADAPTABILITYAdaptability at the building’s cooling request thanks to the continuouscapacity regulation, assured by sophisticated control’s logic.
2.5 MAXIMUM COMPACTNESSMaximum compactness to achieve a very high flexibility in the designprocess and installation operations, offering a premium solution in case ofreduced clearances or when retrofitting existing installations.
3.2 High efficiency water cooled chillerIndoor unit for the production of chilled water featuring semihermeticscrew compressors optimized to operate with low compression ratio andR134a, electronic expansion valve, shell and tube condenser and shelland tube flooded evaporator.The unit results extremely compact, thanks to the peculiar constructionlayout, without base , frame and panels. At the same time high efficiencyis guaranteed by the innovative optimized compressors and highperforming heat exchangers, enhancing the EER values up to 5,8 atEurovent standard conditions.
3.3 Installation noteThe unit is supplied fully refrigerant charged and factory tested. On siteinstallation only requires power and hydraulic connection.
3.4 Refrigerant circuitUnit designed with dedicated and independent refrigerant circuits in orderto ensure continuous operation, limited pollution, and easy maintenance.In addition to main components described in the following sections, eachrefrigerant circuit is fitted as standard with:- electronic expansion valve- high and low pressure safety valve- high and low pressure transducers- check valve on the compressor delivery line- liquid line shut-off device- drier filter with replaceable cartridge- refrigerant line sight glass with humidity indicator- safety switching device for limiting the pressure
3.5 CompressorNew semi-hermetic screw compressors designed for high efficiency in lowcondensing temperature applications.Semi-hermetic screw compressors with 2 five- and six-lobe rotors: thefive-lobe rotor is splined directly onto the motor (nominal speed 2950 rpm)without the use of interposed gears. The bearings provided along therotor axis in a separate chamber isolated from the compression chamber,are made in carbon steel. Each compressor is provided with twoentrances for the oil recovery from the exchangers. The built-in oilseparator has 3 stages of separation, and a 10 mm stainless steel meshfilter ensures the constant presence of oil inside. Cooling power ispartialized by a slide valve which, depending on the position assumed,permits a stepless compression chamber reduction; each compressor cantherefore smoothly partialize from 25% to 100% of its capacity. The twopole motors are fitted as standard with electric devices to limit theabsorbed current during compressor start-up, and with unloaded start-up.Each compressor is fitted with manual-reset motor thermal protection,delivery gas temperature and oil level controls and an electric resistancefor the carter´s heating while the compressor is stopped. A check valvefitted on the refrigerant delivery line prevents the rotors from reversingafter stopping. On-off cock on the delivery line of each compressor(external to the compressor itself) to isolate the refrigerant charge in theheat exchanger when required.
3.6 Plant side heat exchangerShell and tube heat exchanger, fully designed and manufactured byClimaveneta, working as flooded type evaporator, with water flowinginside the pipes and refrigerant flowing in the shell side. The steel shell is
insulated with a foamed polyethylene closed-cell mat of 9 mm thicknessand a thermal conductivity of 0,033 W/mK at 0°C. The copper pipes areinternally and externally grooved in order to improve the heat exchange.Integrated system to avoid liquid entrainment and to protect thecompressor against the risk of liquid suction. A differential pressure switchis fitted in order to control the water flow while the unit is working,avoiding the risk of ice generation. An electric heater, operating whenantifreezing mode is active, is presente on the shell.The pipes’ flooding iscontrolled by an electronic expansion valve, managed by proprietarylogics to guarantee the proper refrigerant flow and the complete floodingof pipes in all conditions of compressors’ load. The heat exchangercomplies with PED standards, concerning the operating pressures.
3.7 Source side heat exchangerShell and tube heat exchanger, fully designed and manufactured byClimaveneta, working as condenser, with water flowing inside andrefrigerant flowing outsider the pipes. The steel shell is insulated with afoamed polyethylene closed-cell mat. The copper pipes are internally andexternally grooved to improve heat exchange. Heads can be removed toinspect the pipes. The heat exchanger complies with PED standards,concerning the operating pressures.
3.8 Electrical and control panelElectrical and control panel built to EN60204-1 and EC204-1 standards,complete with:- electronic controller- control circuit transformer- general door lock isolator- power circuit with electric bus bar distribution system- fuses and contactors for compressors- compressors protection with internal thermal overload- terminals for cumulative alarm block- remote ON/OFF terminals- spring-type control circuit terminal board- phases sequence and minimum/maximum voltage control- compressors' start up with part winding (sizes 0551-0701) or start/delta
(remaining sizes)- cables' entrance from the top
3.9 Certification and applicable directivesThe unit complies with the following directives and relative amendments:- EUROVENT Certification program- CE Declaration of conformity certificate for the European Union- SAFETY QUALITY LICENCE Product quality certificate for Popular
Republic of China- Machine directive 2006/42/EC- PED directive 97/23/EC- Low Voltage directive 2006/95/EC- ElectroMagnetic compatibility directive 2004/108/EC- ISO 14001 Company´s Environmental Management System
certification- ISO 9001 Company´s Quality Management System certification
3.10 TestsTests performed throughout the production process, as indicated inISO9001.Performance or noise tests can be performed by highly qualified staff inthe presence of customers.Performance tests comprise the measurement of:- electrical data- water flow rates- working temperatures- power input- power output- pressure drops on the water-side exchanger both at full load (at theconditions of selection and at the most critical conditions for thecondenser) and at part load conditions.During performance testing it is also possible to simulate the main alarmstates.Noise tests are performed to check noise emissions according toISO9614.
3.11 Electronic control W3000 TEThe brand new W3000TE controller offers advanced functions andalgorithms. The large format keyboard and the wide LCD display favouran easy and safe access to the machine setup and a complete view ofunit's staus. The assessment and intervention on the unit is managedthrough a multi-level menu, with selectable user’s language. The led iconsimmediately show the operating status of the circuits, as well as of thefans and of the water pumps (if present). An optional extra is the touch
screen interface: 7.0” WVGA colour display with adjustable LED backlightand front USB port. The touch screen technology allows intuitivenavigation between the various screens, safe access to the data with athree-level password protection as well as the graphic display of theperformance of some monitored measurements.The diagnostics comprises a complete alarm management system, with“black box” (via PC) and alarm log functions (via display or also PC) for abetter analysis of the unit performance.For the systems made of several units, the adjustment of the resources isperformed by optional proprietary devices.Consumption metering and performance measurement are possible aswell. Supervision can be easily developed via proprietary devices or theintegration in third party systems by means of the most common protocolsas ModBus, Bacnet-over-IP, Echelon LonWorks, Bacnet MS/TPprotocols.Compatibility with the remote keyboard managing up to 8 units.The presence of the programmable timer allows the creation of anoperating profile containing up to 4 typical days and 10 time bands.The control is characterized by the continuous modulation of the unitcapacity, based on PID algorithms and referring to the water deliverytemperature.Optionally (VPF package), capacity modulation can be integrated withhydraulic flow modulation, thanks to inverter-driven pumps and to specificresources for the hydraulic circuit.
3.11 Touch screenTouch screen interface
3.12 Versions/CA - Class A of efficiencyUnit in ´Class A´ of efficiency as per Eurovent.
Allows integration with BMSoperating with ModBUS protocol.
ALL
4182SERIAL CARD FORLONWORKS
Interface module for Echelonsystems.
Allows integration with BMSoperating with LonWorksprotocols
ALL
4184SERIAL CARD BACNETMS/TP RS485
Interface module for BACnetprotocols.
Allows integration with BMSoperating with BACnet protocol.
ALL
4185SERIAL CARD FORBACNET OVER IP
Interface module for BACnetOVER-IP protocols.
Allows to interconnect BACnetdevices over Internet Protocolwithin wide-area networks.
ALL
6160AUXILIARY INPUT6161AUXILIARY SIGNAL4-20mA
4-20 mA analog input Allows to change the operatingset-point according to the value ofcurrent applied to the analogueinput.
ALL
6162REMOTE SIGNALDOUBLE SP
Allows to activate the EnergySaving set-point.
Allows to change the operatingset-point according to a remoteswitch
ALL
6170DEMAND LIMIT6171INPUT REMOTEDEMAND LIMIT
Digital input (voltage free) It permits to limit the unit's powerabsorption for safety reasons or intemporary situation.
ALL
6190TYPE OF VISUAL DISPLAY6195W3000 TOUCH VISUALDISPLAY
Colour WVGA 7'' displaykeyboard with adjustable LEDbacklight (WARNING: withoutdoor temperature below 0°Cthe display response time mayvisibly increase)
The touch-screen's technology ischaracterized by aneasy-to-access data, and it allowsan effective graphicalrepresentation of the main figuresprotecting the access through 3privilege levels.
ACCESSORIES DESCRIPTIONS BENEFITS AVAILABLE FOR MODELS1510SOFT-STARTER1511SOFT-STARTER FORTHREE-PHASE POWERSUPPLY
Electronic device adopted tomanage the inrush current.
Break down of the inrush currentcompared to the direct motorstart, lower motor windings’mechanical wear, avoidance ofmains voltage fluctuations duringstarting, favourable sizing for theelectrical system.
ALL
3350WATER FLOW REGULATION :3351WITH VPF SYSTEM (SIG.0-10V)
Pre-arrangement for the control ofthe inverter driven pumps (for theplant’s primary circuit). This optionincludes: control devices to readthe signals (4-20mA) coming frompressure transducers placed inthe plant and so to manage thepumps and the by-pass valve(0-10V signal), additional pressuretransducer in the evaporator[pressure transducers, pumps andby-pass valve to be supplied byothers]
Energy consumption associatedwith fluid circulation dropssignificantly, very often over 50%.Beyond the energy saving and theconsequent lower operating costs,this new approach enablessimplification in the plant's designthat ensures substantial savingsin initial investment costs. Theintegration of variable flow pumpson board, permits significantsavings in overall dimensions,circuit components and in thesystem's commissioning.
ALL
3352WITH VPF.D SYSTEM(SIG. 0-10V)
Pre-arrangement for the control ofthe inverter driven pumps (for theplant’s primary circuit). This optionincludes: control devices to readthe signals (4-20mA) coming frompressure transducers placed inthe plant and so to manage thepumps and the by-pass valve(0-10V signal), additional pressuretransducer in the evaporator[pressure transducers, pumps andby-pass valve to be supplied byothers]
Energy consumption associatedwith fluid circulation dropssignificantly, very often over 50%.Beyond the energy saving and theconsequent lower operating costs,this new approach enablessimplification in the plant's designthat ensures substantial savingsin initial investment costs. Theintegration of variable flow pumpson board, permits significantsavings in overall dimensions,circuit components and in thesystem's commissioning.
ALL
3360PUMPS COMAND RELAYS3361RELAY EVAPORATORPUMP
Relay for the pump(s) on/off. It permits the pumps on/off. Incase of 2 pumps, one in stand-byto the other, it's possible tobalance the operating hoursbetween them.
ALL
33621+1 RELAYEVAPORATOR PUMPS
Relay for the pump(s) on/off. It permits the pumps on/off. Incase of 2 pumps, one in stand-byto the other, it's possible tobalance the operating hoursbetween them.
ALL
33631 EVAP. + 1 COND.RELAY PUMPS
Relay for the pump(s) on/off. It permits the pumps on/off. Incase of 2 pumps, one in stand-byto the other, it's possible tobalance the operating hoursbetween them.
ALL
33642 EVAP. + 2 COND.RELAY PUMPS
Relay for the pump(s) on/off. It permits the pumps on/off. Incase of 2 pumps, one in stand-byto the other, it's possible tobalance the operating hoursbetween them.
ALL
5920MANAGEMENT & CONTROL SYSTEMS5921NETWORK ANALYZERFOR DEMETRA
This option includes all followingdevices on-board the unit panel:- network analyzer operating onModBUS protocol over RS-485(without certification MID)- current transformers.
This accesory allows to acquirethe electrical data and the powerabsorbed by the unit and sendthem via RS-485 bus to anexternal device for energymetering (DEMETRA - seededicated manual).
ACCESSORIES DESCRIPTIONS BENEFITS AVAILABLE FOR MODELS5922ClimaPRO ModBUSRS485 - MID
This option includes all followingdevices on-board the unit panel:- MID certified network analyzeroperating on ModBUS overRS-485- Current transformers- W3000TE controller- Software release LA09 or laterversion.
This accessory allows to acquirethe electrical data and the powerabsorbed by the unit andcommunicate with ClimaPRO viahigh level communicationinterface based on ModBUS overEIA RS-485.More specifically, the datacollected are: power supply,current, frequency, power factor(cosᵩ), electrical powerconsumption, energyconsumption.This specific energy meter modelis MID certified and can thereforebe used for billing applications.This option also ensures thecompatibility between the unitsand ClimaPRO, thus allowingClimaPRO to acquire all the mainunit’s operating variables andstatus by means of a high levelcommunication interface to thecontroller installed onboard theunit panel.
ALL
5923ClimaPRO BacNET overIP
This option includes all followingdevices on-board the unit panel:- network analyzer operating onBACnet over IP- Current transformers- W3000TE controller- Software release LA09 or laterversion.
This accessory allows to acquirethe electrical data and the powerabsorbed by the unit andcommunicate with ClimaPRO viahigh level communicationinterface based on BACnet overIP.More specifically, the datacollected are: power supply,current, frequency, power factor(cosᵩ), electrical powerconsumption, energyconsumption.This network analyzer is not MIDcertified and cannot therefore beused for billing applications.This option also ensures thecompatibility between the unitsand ClimaPRO, thus allowingClimaPRO to acquire all the mainunit’s operating variables andstatus by means of a high levelcommunication interface to thecontroller installed onboard theunit panel.
It's used for regulating the flowof water as a function ofthe condensing pressure,maintaining it constant duringoperation. When the refrigerationplant is stopped, the cooling waterflow is shut off automatically. Thevalve is selected and tested byClimaveneta during the unit's test.Recommended for applicationswith low temperature water, forexample groundwater, where it'srequest the condensationpressure's control and it's possibleto work with variable flow on therejection circuit (Separatelysupplied, not mounted).
ACCESSORIES DESCRIPTIONS BENEFITS AVAILABLE FOR MODELS1246WITH MODULATINGSIGNAL 0-10V
0-10 V signal on terminal boardfor the condensation control.
For dry-cooler or cooling towerapplications, it permits tomodulate the fans' speed in orderto maintain the condensingpressure in a pre-defined range.Max transmission lenght 30 m.Shielded cable is recommended.
ALL
13803 WAY MODULATING VALVE13813 WAY VALVE MOD. A
3 way modulating valve, steelmade, with diverting function (seededicated section).
It’s recommended for applicationswith geothermal probes, in whichthe water flow is required to beconstant.
FOCS3-W: 0551.
13823 WAY VALVE MOD. B
3 way modulating valve, steelmade, with diverting function (seededicated section).
It’s recommended for applicationswith geothermal probes, in whichthe water flow is required to beconstant.
FOCS3-W: 0551, 0701, 0851, 0951.
13833 WAY VALVE MOD. C
3 way modulating valve, steelmade, with diverting function (seededicated section).
It’s recommended for applicationswith geothermal probes, in whichthe water flow is required to beconstant.
FOCS3-W: 0551, 0701, 0851, 0951, 1101, 1301.
13843 WAY VALVE MOD. D
3 way modulating valve, steelmade, with diverting function (seededicated section).
It’s recommended for applicationswith geothermal probes, in whichthe water flow is required to beconstant.
ACCESSORIES DESCRIPTIONS BENEFITS AVAILABLE FOR MODELS1800EVAPORATOR WATER FLOW SWITCH1801EVAPORATOR WATERFLOW SWITCH
Flow switch with stainless scoopAISI 316L and IP65 protectionsuitable for installation in industrialplant pipes. It should be installedin a straight pipe without filters,valves, etc., long at least 5 timesits diameter, both upstream anddownstream.
Signaling of lack of or excessivereduction of flow, it generates analarm that is in automatic ormanual reset depending on n °alarms per hour and the maximumtime of operation of the pumpunder conditions of low flow rate.
ALL
2630INSULATION ON EVAP.2631DOUBLE INSULATIONON EVAP.
ACCESSORIES DESCRIPTIONS BENEFITS AVAILABLE FOR MODELS1950CONDENSER WATER TEMPERATURE1953KIT HWT
ALLThis kit enlarges the operating limits, raising the condenser leaving water temperature up to 55°C.
The accessory is required for applications with high condensing temperature (heat pump, high level heat reclaim or dry cooler applications).
Chiller Plant Control with Active Optimization System
ClimaPRO System Manager
ClimaPRO System Manager represents the state-of-the-art platform for chiller plant management and control.ClimaPRO ensures to actively optimize the entire chiller plant by managing and adjusting each component directly involved in the production and the distribution of the heating and the cooling energies, therefore involving chillers and heat pumps, pumping groups as well as the source-side devices like, for example, the cooling towers.
In particular, ClimaPRO measures in real-time all the operating variables from the fi eld, for each individual device and each of the main system branche, by using serial communication lines as well as dedicated analogue signals.
The acquired data are then compared with the design data of each single unit at any different working conditions, thus allowing to implement control strategies based on dynamic algorithms which take into account the real operating conditions.
On the basis of these values, an advanced diagnostic module also allows to assess the level of effi ciency for each individual unit, translating data into easy-to-read information in order to simplify and optimize the maintenance activities.
The “Chart Builder” software module allows to display the trends of the main operating variables. The “Reporting” module allows to send reports to selected users, including data and system’s status of the main devices as well as to perform calculation of the energy indexes for each single unit and for the entire chiller plant.
The accessibility to ClimaPRO System Manager is ensured by an integrated web server that makes it visible from any computer equipped with a web browser, either locally or remotely.
Notes:1 Plant (side) cooling exchanger water (in/out) 12,0°C/7,0°C; Source (side) heat exchanger water (in/out) 30,0°C/35,0°C.2 Values in compliance with EN14511-3:2013.3 Rated in accordance with AHRI Standard 550/590 (2011 with addendum 1).4 Average sound pressure level at 1m distance, unit in a free field on a reflective surface; non-binding value calculated from the sound power level.5 Sound power on the basis of measurements made in compliance with ISO 9614.6 Sound power level in cooling, indoors.7 Unit in standard configuration/execution, without optional accessories.- Not availableCertified data in EUROVENT
Notes:1 Plant (side) cooling exchanger water (in/out) 12,0°C/7,0°C; Source (side) heat exchanger water (in/out) 30,0°C/35,0°C.2 Values in compliance with EN14511-3:2013.3 Rated in accordance with AHRI Standard 550/590 (2011 with addendum 1).4 Average sound pressure level at 1m distance, unit in a free field on a reflective surface; non-binding value calculated from the sound power level.5 Sound power on the basis of measurements made in compliance with ISO 9614.6 Sound power level in cooling, indoors.7 Unit in standard configuration/execution, without optional accessories.- Not availableCertified data in EUROVENT
FOCS3-W 4752Power supply V/ph/Hz 400/3/50PERFORMANCECOOLING ONLY (GROSS VALUE)Cooling capacity (1) kW 1693Total power input (1) kW 292EER (1) kW/kW 5,80ESEER (1) kW/kW 7,39COOLING ONLY (EN14511 VALUE)Cooling capacity (1)(2) kW 1688EER (1)(2) kW/kW 5,54ESEER (1)(2) kW/kW 6,58Cooling energy class -EXCHANGERSHEAT EXCHANGER USER SIDE IN REFRIGERATIONWater flow (1) l/s 80,9Pressure drop (1) kPa 46,7HEAT EXCHANGER SOURCE SIDE IN REFRIGERATIONWater flow (1) l/s 94,6Pressure drop (1) kPa 58,0REFRIGERANT CIRCUITCompressors nr. N° 2Number of capacity N° 0No. Circuits N° 2Regulation STEPSLESS
Min. capacity step % 25Refrigerant R134aRefrigerant charge kg 377Oil charge kg 76Rc (ASHRAE) (3) kg/kW 0,225NOISE LEVELSound Pressure (4) dB(A) 82Sound power level in cooling (5)(6) dB(A) 102SIZE AND WEIGHTA (7) mm 5270B (7) mm 1320H (7) mm 2380Operating weight (7) kg 8360
Notes:1 Plant (side) cooling exchanger water (in/out) 12,0°C/7,0°C; Source (side) heat exchanger water (in/out) 30,0°C/35,0°C.2 Values in compliance with EN14511-3:2013.3 Rated in accordance with AHRI Standard 550/590 (2011 with addendum 1).4 Average sound pressure level at 1m distance, unit in a free field on a reflective surface; non-binding value calculated from the sound power level.5 Sound power on the basis of measurements made in compliance with ISO 9614.6 Sound power level in cooling, indoors.7 Unit in standard configuration/execution, without optional accessories.- Not availableCertified data in EUROVENT
6.2 ETHYLENE GLYCOL MIXTUREEthylene glycol and water mixture, used as a heat-conveying fluid, cause a variation in unit performance. For correct data, use the factorsindicated in the following tabel.
Freezing point (°C)
0 -5 -10 -15 -20 -25 -30 -35
Ethylene glycol percentage by weight
0% 12% 20% 30% 35% 40% 45% 50%
cPf 1 0,985 0,98 0,974 0,97 0,965 0,964 0,96
cQ 1 1,02 1,04 1,075 1,11 1,14 1,17 1,2
cdp 1 1,07 1,11 1,18 1,22 1,24 1,27 1,3
For data concerning other kind of anti-freeze solutions (e,g, propyleneglycol) please contact our Sale Department.
cPf: cooling power correction factorcQ: flow correction factorcdp: pressure drop correction factor
6.3 FOULING FACTORSPerformances are based on clean condition of tubes (fouling factor = 1). For different fouling values, performance should be adjusted using thecorrection factors shown in the following table.
Water flow and pressure dropWater flow in the plant (side) exchanger is given by:Q=P/(4,186 x Dt)Q: water flow (l/s)Dt: difference between inlet and outlet water temp. (°C)P: heat exchanger capacity (kW)
Pressure drop is given by:Dp= K x (3,6 x Q)^2/1000Q: water flow (l/s)Dp: pressure drop (kPa)K: unit size ratio
HEAT EXCHANGER USER SIDE HEAT EXCHANGER SOURCESIDE
The coefficient “K” on the source side heat exchanger is referred to its standart selection. When it’s required to move to an higher number of steps water side (with delta T >=10°C), “K”coefficient as to be multiplied for 8,5 (Knew = K x 8,5)Q min: minimum water flow admitted to the heat exchangerQ min [2]: minimum water flow admitted to the heat exchangerQ max: maximum water flow admitted to the heat exchangerC.a. min: minimum water content admitted in the plantC.A.S.: Exchanger water content
F.L.I.: Full load powerF.L.A.:Full load currentL.R.A.:Locked rotor amperes for single compressorS.A.: Inrush current
(1) Safety values to be considered when cabling the unit for power supply and line-protections
Electrical data valid for standard units without any additional option
Plant (side) cooling exchanger water (in/out) 12,0°C/7,0°C; Source (side) heat exchanger water (in/out) 30,0°C/35,0°C.
Voltage tolerance: 10%Maximum voltage unbalance: 3%
Given the typical operating conditions of units designed for indoor installation, which can be associated (according to reference document IEC 60721) to the following classes:- climatic conditions class AA4: air temperature range from 5 up to 42°C (*)- special climatic conditions negligible- presence of water class AD2: possibility of water dripping inside the technical room- biological conditions class 4B1 and 4C2: negligible presence of corrosive and polluting substances- mechanically active substances class 4S2: locations in areas with sand or dust sources
The required protection level for safe operation, according to reference document IEC 60529, is IP21 BW (protection against access of external devices with diameter larger than 12 mm andwater falling vertically).The unit can be considered IP21 CW protected, thus fulfilling the above operating conditions.
(*) for the unit’s operating limits, see “selection limits” section
F.L.I.: Full load powerF.L.A.:Full load currentL.R.A.:Locked rotor amperes for single compressorS.A.: Inrush current
(1) Safety values to be considered when cabling the unit for power supply and line-protections
Electrical data valid for standard units without any additional option
Plant (side) cooling exchanger water (in/out) 12,0°C/7,0°C; Source (side) heat exchanger water (in/out) 30,0°C/35,0°C.
Voltage tolerance: 10%Maximum voltage unbalance: 3%
Given the typical operating conditions of units designed for indoor installation, which can be associated (according to reference document IEC 60721) to the following classes:- climatic conditions class AA4: air temperature range from 5 up to 42°C (*)- special climatic conditions negligible- presence of water class AD2: possibility of water dripping inside the technical room- biological conditions class 4B1 and 4C2: negligible presence of corrosive and polluting substances- mechanically active substances class 4S2: locations in areas with sand or dust sources
The required protection level for safe operation, according to reference document IEC 60529, is IP21 BW (protection against access of external devices with diameter larger than 12 mm andwater falling vertically).The unit can be considered IP21 CW protected, thus fulfilling the above operating conditions.
(*) for the unit’s operating limits, see “selection limits” section
SIZE
MAXIMUMCABLE SECTION CONNECTED TO
MAIN SWITCH [mm2]
MAXIMUMBAR SECTION
CONNECTED TO MAIN SWITCH
[mm2]
ICW (0.25 s) short time
current rms[kA]
0551
120 20 x 5
100701
0851
150951
1101
1301
1401
2 x 150 2 x 25 x 5
25
1651
1901
2101
2501
2602
2 x 185 2 x 32 x 6
3002
3152
27
3502
3652
4002
min 2 x 185 max 2 x 300
min 2 x 40 x 5 max 2 x 63 x 54102
4502
4602 min 2 x 240 max 2x 400
min 2 x 50 x 5 max 2 x 63 x 5 50
4752
8.2 Maximum cables/bars section connected to main switch and short time current
Working conditionsPlant (side) cooling exchanger water (in/out) 12,0°C/7,0°C; Source (side) heat exchanger water (in/out) 30,0°C/35,0°C.Sound power on the basis of measurements made in compliance with ISO 9614.Such certification refers specifically to the sound Power Level in dB(A). This is therefore the only acoustic data to be considered as binding.Sound power level in cooling, indoors.
SOUND PRESSURE LEVEL
Octave band [Hz]
63 125 250 500 1000 2000 4000 8000SIZETotal sound
leveldB(A)Sound pressure level dB
FOCS3-W
0551 55 58 73 72 74 69 63 53 77
0701 55 58 73 72 74 69 63 53 77
0851 64 61 72 76 79 67 55 49 80
0951 64 61 72 76 79 67 55 49 80
1101 64 61 72 76 79 67 55 49 80
1301 64 61 72 76 79 67 56 50 80
1401 64 61 72 76 79 67 56 50 80
1651 64 61 72 76 79 67 56 50 80
1901 64 61 72 76 79 67 56 50 80
2101 66 63 73 78 81 69 58 52 82
2501 66 63 73 78 81 69 58 52 82
2602 65 62 72 77 80 68 57 51 81
3002 65 62 72 77 80 68 57 51 81
3152 65 62 72 77 80 68 57 51 81
3502 65 62 72 77 80 68 57 51 81
3652 65 62 72 77 80 68 57 51 81
Working conditionsPlant (side) cooling exchanger water (in/out) 12,0°C/7,0°C; Source (side) heat exchanger water (in/out) 30,0°C/35,0°C.Average sound pressure level at 1m distance, unit in a free field on a reflective surface; non-binding value calculated from the sound power level.
Working conditionsPlant (side) cooling exchanger water (in/out) 12,0°C/7,0°C; Source (side) heat exchanger water (in/out) 30,0°C/35,0°C.Average sound pressure level at 1m distance, unit in a free field on a reflective surface; non-binding value calculated from the sound power level.
UNI ISO 228/1Pipe threads where pressure-tight joints are not made on the threads - Designation, dimensions and tolerancesUsed terminology:G: Pipe threads where pressure-tight joints are not made on the threadsA: Close tolerance class for external pipe threads where pressure-tight joints are not made on the threadsB: Wider tolerance class for external pipe threads where pressure-tight joints are not made on the threadsInternal threads: G letter followed by thread mark (only tolerance class)External threads: G letter followed by thread mark and by A letter for A class external threads or by B letter for B class external threads.
UNI EN 10226-1Pipe threads where pressure-tight joints are made on the threads - Designation, dimensions and tolerancesUsed terminology:Rp: Internal cylindrical threads where pressure-tight joints are made on the threadsRc: Internal conical threads where pressure-tight joints are made on the threadsR: External conical threads where pressure-tight joints are made on the threadsInternal cylindrical threads: R letter followed by p letterInternal conical threads: R letter followed by c letterExternal conical threads: R letter
Designation Description
Internal cylindrical threads where pressure-tight joints are made on the threads, defined by standardUNI ISO 7/1Conventional ø 1 1/2”
UNI EN 10226-1 - Rp 1 1/2
Internal cylindrical threads where pressure-tight joints are made on the threads, defined by standardUNI ISO 7/1Conventional ø 2 1/2”
UNI EN 10226-1 - Rp 2 1/2
Internal cylindrical threads where pressure-tight joints are made on the threads, defined by standardUNI ISO 7/1Conventional ø 3”
UNI EN 10226-1 - Rp 3
External conical threads where pressure-tight joints are made on the threads, defined by standardUNI ISO 7/1Conventional ø 3”
UNI EN 10226-1 - R 3
Internal cylindrical threads where pressure-tight joints are not made on the threads, defined by standard UNI ISO 228/1Tolerance class B for external threadConventional ø 4”
Notes:Conventional diameter value [in inches] identifies short thread designation, based upon the relative standard.All relative values are defined by standards.As example, here below some values:
UNI EN 10226-1 UNI ISO 228/1
Conventional ø 1" 1"
Pitch 2.309 mm 2.309 mm
External ø 33.249 mm 33.249 mm
Core ø 30.291 mm 30.291 mm
Thread height 1.479 mm 1.479 mm
TYPE = HGrooved coupling with weld end counter-pipe user side
A1 FOCS3-W_0551_4752_201609_EN HFC R134a
11.1 VARIABLE FLOW HYDRAULIC GROUP (optional)
11.2 VPF systems for plants designed with a single variable flow hydraulic circuit
The energy consumption associated with fluid circulation weighs heavily on the total operating costs of a large installation, especially when the units work at part load, and even more, when they are in stand-by. Under these conditions, although the power absorbed by the compressors and fans is reduced, the power consumed for water circulation remains high. The system power consumption can be reduced using pumps with continuous flow control by inverter. Energy savings are considerable and immediately evident, to the extent that a Δx reduction of the flow of water to be delivered to the system, amounts to a proportional reduction of (Δx)3 in the power absorbed. In the most advanced systems these ones become the pumps for the entire hydraulic circuit, and this eliminates the need to detach the primary circuit, dedicated to the circulation of the water on the units side, from the secondary one, dedicated to water circulation throughout the entire system. In traditional systems it was the only choice possible and imposed mostly by the need for the chiller to work with constant water flow through the evaporator. Now designers can work without worrying about this limit, as Climaveneta units are designed to work with the maximum efficiency even with variable flow through the evaporator, managing the resources independently, in order to keep the outlet water temperature constantly at the set-point entered by the user. This simplifies the design and realization of variable flow systems and offers advantages in terms of both reductions in consumption and hydraulic circuit sizing. The integration of pumps + inverters built-in the unit permits significant savings in space, circuit components, and system start-up times.
The VPF (Variable Primary Flow system) is the Climaveneta solution that allows to have the variable water flow on the user side (evaporator) in the plants with primary circuit only.
The VPF kit includes the following devices:- control device (called DP3 in the herebelow scheme), mounted
on the electrical panel, and pressure differential transducer (with 4-20 mA signal), mounted on the heat exchanger user side
- control device (called PL3 in the herebelow scheme), positioned inside the elettrical panel
- 0-10V signals for the communication between the pumps and the controller of the unit (W3000TE)
To these ones it’s mandatory to add (not supplied by Climaveneta):- pressure transducer on plant side, with the dedicated signal
4-20 mA for the communication with the PL3 device (this transducer must be installed on the longest (worst) leg of the installation)
- 2 way by-pass valve, with a dedicated 0-10V signal for the communication with the PL3 device
- inverter pumps
When the plant includes more units connected together with a management system (Manager 3000), it’s mandatory to order also the option 3030 “VPF control from Manager 3000”, in order to have the installation of the PL3 device inside the Manager itself and not in the electrical panel of each unit.
CHILLER CONTROL PANEL
DP3 PL3
P
Diff. press. Transducer
acrossEvaporator
(factory fitted)
Diff. press. Transducer plant side(by others)
Inverter pump(by others)
2-way by-pass valve
4-20 mA 0-10 VAlarm on/off 0-10 V 4-20 mA
P
W3000TE controller
A2 FOCS3-W_0551_4752_201609_EN HFC R134a
How it works
The VPF option measures the differential pressure across the installation in order to keep it between a minimum and a maximum value programmed in the PL3 device. As long as the measured value remains inside this range, the output signal to the pumps remains the same. On the other side when the measured value is bigger than the maximum programmed, the signal to the pumps is decreased, and in case the measured value results smaller than the minimum programmed, the signal to the pumps is increased. In any case the change of signal is performed through step by step adjustments and monitoring constantly the effects in order to avoid rough changes and guaranteeing the return of the measured value inside the programmed range as much quickly as possible.
In case the differential pressure requires a water flow smaller than the minimum necessary for the heat exchanger, the DP3 device communicates with the controller in the meantime that the PL3 send to the by-pass valve the signal to open gradually in order to protect the chiller.
When the plant includes more units, the working logic remains the same. The PL3 device, installed in the Manager, collects the information from the pressure transducer mounted in the plant (in common for all the units) and communicates with the by-pass valve (this one too in common for all the units), while the differential transducer mounted on each evaporator, the related DP3 device and the management of the pumps+inverters are duty of the W3000 of each unit.
Eva
pora
tor
Chiller
Variable flow
pump
BUFFER TANK
Flow balancing valve
Bypass
p installation
Load 2
Load 1
Load 4
Load 3
A3 FOCS3-W_0551_4752_201609_EN HFC R134a
11.3 VPF.D systems for plants designed with both primary circuit and secondary one with variable flow
Also in those cases when it’s not possible to design a single circuit with variable flow or when it’s necessary to maintain decoupled the primary circuit (dedicated to the chillers) and the secondary one (dedicated to the plant users), it’s possible to have the management of the pumps and inverters directly from the unit.The energy savings are lower than the solution with a unique VPF system, but still important especially when the units are in stand-by, as in this case it’s possible to reduce down to 50% the water flow. These systems can be easily adopted in retrofit application, where the chiller is supposed to be replaced but the plant isn’t.The Climaveneta solution guarantees also the water flow balancing between primary and secondary circuit, in order to avoid the flow inversion in the decoupling pipe.
The VPF.D system (Variable Primary Flow with Decoupler) is the option that allows to have variable water flow on the user side exchanger (evaporator) in plants with both primary and secondary circuits and additional pumps on the user side.
The VPF.D option includes:- control device (PL3 in the herebelow scheme), mounted in the
electrical panel - 2 temperature probes, provided by Climaveneta but installed
by the client in the plant, one for the delivery line and one for the by-pass line
- 0-10V signals for the communication between the pumps and the controller of the unit (W3000TE)
Pumps and related inverters are to be provided and installed by others.
When the plant includes more units connected together with a management system (Manager 3000), it’s mandatory to order also the option 3030 “VPF control from Manager 3000”, in order to have the installation of the PL3 device inside the Manager itself and not in the electrical panel of each unit.
CHILLER CONTROL PANEL
PL3
Inverter pump (by others)
Temperature sensor common supply line (supplied by CV for
installation by others)
0-10 VAllarme on/off
T2T1
Temperature sensor in the by-pass line
(supplied by CV for installation by others)
W3000TE controller
A4 FOCS3-W_0551_4752_201609_EN HFC R134a
How it works
The VPF. D measures, thorugh the two probes installed, the temperatures T1 and T2 (on the delivery and by-pass lines), keeping T2=T1 as control target.As long as T1=T2, the water flow in the primary circuit is equal or higher than in the secondary one. When T2>T1, the water flow in the primary circuit becomes lower than the flow in the secondary circuit, leading to recirculation of warm water coming back from the installation and mixing with the cold supply water.
In order to rebalance this situation the speed of the pumps is being increased gradually in order to let the temperature T1 be again equal to T2.The target of the VPF.D is then to keep constant the ΔT in the primary circuit. The secondary circuit remains completely independent and so has to be managed and controlled by the customer side.The minimum water flow through the user side exchanger is guaranteed by a fixed setting for the minimum speed of the pumps (inside the service menu of the unit controller).
When the plant includes more units, the working logic remains the same. The PL3 device, installed in the Manager, collect the information about temperatures T1 and T2, while the W3000 of each unit takes care of the speed of the pumps, according to the signal sent from the Manager. The Manager itself takes care also that the pumps of each chiller work at the same speed and that, when an additional unit is switched on, the speed of the already running pumps is automatically aligned.
T1
T2
Load 2
Load 1
Load 2
Load 1
Zone 1 Zone 2
DecouplerDESCRIPTION
Manifold supply
Manifold return
Eva
pora
tor
Chiller
Variable flow
pump
Variable flow
pump
Variable flow
pump
BUFFER TANK
A5 FOCS3-W_0551_4752_201609_EN HFC R134a
11.4 For VPF system: indications for the bypass pipe sizing Differential pressure transducer on the farest pipe of the plant and by-pass valve are at customer charge. Climaveneta provides only some indications for the plants de-sign, as a function of the minimum waterfl ow on the primary heat exchanger.
11.5 For VPF.D system: indications for the decoupling pipe sizing Climaveneta provides in the table below some indications for the plants design, as a function of the nominal waterfl ow on the primary heat exchanger.NOTE: temperature probes are separately supplied
Minimum waterfl ow to technical bulletin
[m3/h]
Kvs Recommended valveValve Valve motor
ByPass
Da 19 a 30 40 VVG41.50 DN50 SKB60 DN50 (2”)fi no a 37 49 VVF31.65 DN65 SKB60 DN65 (2"½)fi no a 60 78 VVF31.80 DN80 SKB60 DN80 (3“)fi no a 95 124 VVF31.90 DN100 SKC60 DN100 (4“)fi no a 150 200 VVF31.91 DN125 SKC60 DN125 (5“)fi no a 230 300 VVF31.92 DN150 SKC60 DN150 (6”)
2-way valve and minimum recommended bypass pipe diameter as a function of the minimum waterfl ow.
Minimum waterfl ow to technical bulletin
[m3/h]
Decoupling pipe
Da 25 a 40 2"½fi no a 60 3"fi no a 100 4"fi no a 150 5"fi no a 225 6"fi no a 375 8"
Minimum decoupling pipe diameter as a function of the minimum waterfl ow
B1 FOCS3-W_0551_4752_201609_EN HFC R134a
12.1 CONDENSATION CONTROL DEVICES
In the chart below:Line (A): curve of the pressostatic valve for units FOCS3-W 0551, 0701, 0851Line (B): curve of the pressostatic valve for units FOCS3-W 0951, 1101, 1301Line (C): curve of the pressostatic valve for units FOCS3-W 1401, 1651, 1901, 2101Line (D): curve of the pressostatic valve for units FOCS3-W 2501.
12.2 Pressostatic valve
Pressostatic valve with steel body.
It provides a modulating control of the water flow as a function of the condensing pressure, keeping it constant during the operation time. When the unit is switched off, the water flow automatically stops. The valve is selected for a Delta T of 10°C (12/7 °C e 15/25°C), factory mounted and tested by Climaveneta during the end of line test of the unit.
It’s recommended for applications with low temperature water, in which the condensation pressure control is required and it’s possible to work with variable water flow on the source side.
10
100
1000
1 10 100
Pres
sure
dro
p [k
Pa]
Water flow [l/s]
PRESSOSTATIC
A
B
C
D
A B C D
B2 FOCS3-W_0551_4752_201609_EN HFC R134a
12.3 2Way valve
Two way servo-motorized valve with steel body.
The valve is selected for a Delta T of 10°C (12/7 °C e 15/25°C), factory mounted and tested by Climaveneta during the end of line test of the unit.
10
100
1.000
1 10 100
Pres
sure
dro
p [k
Pa]
Water flow [l/s]
2-WAY
A
B
C
D
E
F
G
H
A B C D E F G H
In the chart below:Line (A): curve of the 2-way valve for units FOCS3-W 0551 Line (B): curve of the 2-way valve for units FOCS3-W 0551-0701Line (C): curve of the 2-way valve for units FOCS3-W 0551-1101Line (D): curve of the 2-way valve for units FOCS3-W 0551-1901Line (E): curve of the 2-way valve for units FOCS3-W 0851-3002Line (F): curve of the 2-way valve for units FOCS3-W 1301-4752Line (G): curve of the 2-way valve for units FOCS3-W 1651-4752Line (H): curve of the 2-way valve for units FOCS3-W 2602-4752.
It’s recommended in case of inverter pumps and water flow modulation.
2-way valve kvs DN Dp max Qmin Qmax Actuatortype [l/s] [kPa] [l/s] [l/s] type
A 4,4 32 300 2,8 4,4 0-10 V
B 6,9 40 300 4,4 6,9 0-10 V
C 11,1 50 300 6,9 11,1 0-10 V
D 17,5 65 300 11,1 17,5 0-10 V
E 27,8 80 300 17,5 27,8 0-10 V
F 44,4 100 300 27,8 44,4 0-10 V
G 63,9 125 300 40,3 63,9 0-10 V
H 100,0 150 300 63,9 100,0 0-10 V
B3 FOCS3-W_0551_4752_201609_EN HFC R134a
12.4 3Way valve
3 way modulating valve, steel made, with diverting function.
The valve is selected for a Delta T of 5°C (12/7 °C e 30/35°C) and supplied as a pare item (not factory mounted- maximum length for the connection cable 30m).
10
100
1.000
1 10 100 1.000
Pres
sure
dro
p [k
Pa]
Water flow [l/s]
3-WAY
A
B
C
D
E
F
G
A B C D E F G
In the chart below:Line (A): curve of the 3-way valve for units FOCS3-W 0551Line (B): curve of the 3-way valve for units FOCS3-W 0551-0951Line (C): curve of the 3-way valve for units FOCS3-W 0551-1301Line (D): curve of the 3-way valve for units FOCS3-W 0551-2101Line (E): curve of the 3-way valve for units FOCS3-W 0851-3002, 3502Line (F): curve of the 3-way valve for units FOCS3-W 1301-4752Line (G): curve of the 3-way valve for units FOCS3-W 2101-4752
It’s recommended for applications with geothermal probes, in which the water flow is required to be constant.