catalog chillere

7/29/2019 catalog chillere

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K20100ENed.1

TC A E Y -THA E Y 1 1 52 3 3

TX A E Y 117 13 3

Compact-Y range Microsystem15,3933,99 kW16,8439,14 kW

Air-cooled water chillers, heat pumps and polyvalent units with axialfans.Range with hermetic Scroll type compressors and R410A ecologicalrefrigerant.


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Contents

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Contents General ch aract eri st ics ......................................4Intended conditions of use....................................4New Compact-Y seri es .......................................5Energy-saving, reliable and versatile waterchillers and heat pumps ........................................5Polyvalent EXPS YSTEMS units in R410A forefficient energy use................................................5Guide to choosing a un it ...................................6

Adapt iv eFunct ion ................................................6Adapt iv eFunct ion Plu s.......................................7TCAEY-THAEY 115233 mo dels ......................9Construction features Standard installation.......9Potential installations.............................................9Electrical panel .......................................................9Option with STANDARD control .........................9Option with compatible control ......9TCAEY-THAEY 115233 acce ssor i es ...........10Factory fitted accessories...................................10Factory fitted accessories withSTANDARDcontrol ....................................................................10Factory fitted accessories with compatible

control..............................................10Accessories supplied loose ................................10Accessories supplied loose with STANDARDcontrol ....................................................................10Accessories supplied loose with compatible

control..............................................10TXAEY 117133 mod els ...................................11Construction features Standard installation.....11Potential installations...........................................11EXP electrical board characteristics .................11TXAEY 117133 acces sor i es ..........................12Factory fitted accessories...................................12Accessories supplied loose ................................12Techn ic al dat a ....................................................13Energy efficiency at partial loads - ESE ER

index.......................................................................21TXAEY oper ating pr incip l e..............................22AUTOMATIC mode - multi-season ...................22SELECT mode - multi-season ............................22Diagram ofAUTOMATIC operating mode.......22Diagram ofSELECT operating mode................22Operating logic .....................................................23The competitive advantages of the polyvalentsystem....................................................................23

Applic ations of t he pol yv alent s ystem ........242-pipe-systems .....................................................244-pipe systems .....................................................24Example of water circuit......................................24Electroni c controls for TCAEY THAEY115233 mod els ..................................................25STANDARD control.............................................25KTR1 - Remote keypad for STANDARD control................................................................................25Compatible control ........................26KTR Remote keypad for compatible

control..............................................26Electron i c cont rols fo r TXAEY 117133models ..................................................................27Electronic control..................................................27KTR Remote keyboard ....................................27Seri al conn ection ...............................................28Serial connection forSTANDARD control.......28Supervision ...........................................................28Serial connection for compatiblecontrol ....................................................................28Supervision ...........................................................28KSC Clock card.................................................28

Performanc e........................................................29Choice of a chiller or heat pump and use of theperformance tables ..............................................29Perfo rmance dat a for TCAEY-THAEY

115233 mod els ..................................................30RC100 and DS15 accessories: performancesand pressure drops..............................................33Pressure drops, residual static pressure..........34TCAEY-THAEY pr essur e drop s and r esidua lstatic pr essur e....................................................35Perfo rmance dat a for TXAEY 117133models ..................................................................36Pressure drops, pump useful static pressure..39TXAEY pressur e drops and residual stati c

pressur e ...............................................................40Operating li mits fo r TCAEY-THAEY mode ls................................................................................ 41Operating li mit s for TX AEY models ..............41Dimensions and foo tpr ints..............................42TCAEY THAEY 115130 dimensions and

footprints, P1 installation.....................................42Installation.............................................................42Weights..................................................................42Clearances and positioning................................42Movement..............................................................42TCAEY THAEY 115130 dimensions andfootprints, ASP1 installation ...............................43Installation.............................................................43Weights..................................................................43Clearances and positioning................................43Movement..............................................................43TCAEY THAEY 133233 dimensions andfootprints, Standard, P1 P2, ASP1 ASP2installation .............................................................44Installation.............................................................44Weights..................................................................44Clearances and positioning................................44Movement..............................................................44TXAEY 117130 dimensions and footprints, P1installation .............................................................45Installation.............................................................45Weights..................................................................45Clearances and positioning................................45Movement..............................................................45TXAEY 133 dimensions and footprints,Standard, P1 P2, ASP1 ASP2 installation 46Installation.............................................................46Weights..................................................................46Clearances and positioning................................46Movement..............................................................46W ater connect ions ............................................47Connection to the system...................................47Pump installation..................................................47Tank & Pump installation....................................47Minimum water circuit content...........................47Maximum water circuit content..........................47Water data.............................................................47Expansion tank technical data ...........................47Use of ant i-f reeze solut ions ............................47W ater circuits in TCAEY-THAEY models with

STANDARD electronic cont ro l .......................48W ater circuits in TCAEY-THAEY models withelect ronic con tro l ........................49W ater circui ts in T XAEY mod els....................50TCAEY-THAEY electric connections with

STANDARD control...........................................51TCAEY-THAEY electric connections withcompat ib le con tro l ......................53Electri c con nections in TXAEY models .......55


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TCAEY-THAEY-TXAEY 115233 general characteristi cs

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General characteristic s

In tend ed condi tions of use

TCAEY units are packaged air-cooled waterchillers.THAEY units are packaged air-cooledreversible heat-pumps on the refrigerant cycle.

They are intended for use in conditioning plantswhere a supply of chilled water (TCAEY) orchilled and hot water (THAEY), is required. Notsuitable for drinking water.

The units are designed f or out door

installation.

The TXAEY units are air-cooled polyvalent unitswith full heat recovery.

They are intended for use in air conditioning orindustrial process applications where, in any

season, there is the requirement for chilledwater or heated water, simultaneously orindependently, in systems with 2 or 4 pipes,which are not for domestic water or directconsumption.

The units are designed f or out door

installation.

The units comply with the following directives: Machinery Directive 98/37/EC (MD); Low voltage Directive 2006/95/EC (LVD); Electromagnetic Compatibility Directive89/336/EEC (EMC);

Pressure Equipment Directive 97/23/EEC(PED).

Guide to re ading t he cod e

"SERIES" code "MODEL" code

T C A E Y 1-2 1533

Cooling only

H

Heat pump

X

Waterproduction

unit

Polyvalentunit

Air-cooledScroll-typehermetic

compressors

R410Arefrigerant

fluidNo. compressors

Approximatecooling capacity

(in kW)

Possibl e inst all ations f or TCAEY-THAEY 115233 mod els:

Standard: Installation without pump (only available for models 133 and 233).

Pump:

P1 Installation with pump.P2 Installation with high static pressure pump (only available for models 133 and 233).

Tank & Pump:ASP1 Installation with pump and water buffer tank.ASP2 Installation with high static pressure pump and water buffer tank (only available for models 133 and 233).

Possibl e in stallations for TXAEY 117133 models:

Standard: Installation without pump (only available for model 133).

Pump:P1 Installation with pump.P2 Installation with high static pressure pump (only available for model 133).

Tank & Pump:

ASP1 Installation with pump and water buffer tank (only available for model 133).ASP2 Installation with high static pressure pump and water buffer tank (only available for model 133).

Exampl e: TCAEY 124 ASP1

o Cold water only unit;o Air-cooled; 1 x Scroll hermetic compressor; R410A refrigerant; Nominal cooling capacity of approximately 24 kW. With pump and water buffer tank.


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5

New Compact-Y series

Energy-saving, reliable and versatile water chillers andheat pumps

A comp lete, f lexib le ser ies

Eight new water chillers and heat pumps from 15 to 34 kW in R 410A,which can be fitted with the innovativeAd apt iv eFunct ion Plus controllogic developed byRHOSSS.p.A. in partnership with theU niversityofPadua, to obtain optimal comfort levels in all working conditions and the

best possible performance in terms of energy efficiency during seasonaloperation.Adapt iv eFunct ion Plu s provides a comfort and energy savingguarantee!

LOW ENERGY CONSUMPTION water ch ill ers and heat pumps

TheAdapt iv eFunct ion Plu s Economy function combines comfortwith low energy consumption. In fact, by adjusting the set-point value, itoptimises compressor operation on the basis of the actual workingconditions.It is thus possible to achieve significant seasonal energy savingscompared to water chillers and heat pumps of an equivalent power withtraditional control logic.

HIGH PRECISION water chil lers and h eat pumps

By using theAdapt iv eFunction Plus Precision function, it is possi ble

to achieve as little fluctuation as possible, at partial capacities, in termsof the average set-point water temperature delivered to the users.

Guaranteed rel iabilit y, even with water in the pipes onl y

Thanks to the Virtual Tank function, Compact-Y units withAdapt iv eFunct ion Plu s can operate in systems with a low watercontent of down to 2 litres/kW, even without the presence of a waterbuffer tank, whilst still guaranteeing the reliability and good workingorder of the unit over time.

Estimation of t he syst em's thermal inertia

Compact-Y units withAdapt iv eFunct ion Plus are able to estimate thecharacteristics of the thermal inertia that regulates the systemdynamics. T his is possible thanks to the "ACM Autot un ing function,which processes the information relative to the progress of the water

temperatures, identifying the optimal value of the control parameters.Continuou s system autod iagnosi s

The estimation function is always active and makes it possible to adaptthe control parameters quickly to every change in the water circuit andthus in the system water contents.

Polyvalent EXPSYSTEMS units in R410A for efficient energyuse

Efficient en erg y u se

EXPSYSTEMS is a latest generation polyvalent ecological system,designed byRHOSSS.p.A. to offer cooling, heating and hot watersimultaneously or independently at any time of year, whilstguaranteeing efficient energy usage. Energy savings are very high, withCOP values of over 6 during the simultaneous production of chilled andhot water.With EXPSYSTEMS, EFFICIENCY , RELIABILITY AND VERSATILITY areguaranteed, whilst offering greater environmental protection.

Polyvalent u nits for residential and l ight commer cial appl ications

Four new units from 17 to 34 kW in R 410A, able to cater for the typicaldemands of 2 and 4-pipe systems in a flexible fashion, so much so infact that they can be used in existing systems without any modifications.They come complete with a wide range of accessories, which can alsobe supplied factory fitted.


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6

Guide to choos ing a unit

Thanks to the wide range of versions and construction options, the newCompact-Y s eries is able to meet a wide range of design and systemrequirements: systems targeted at energy saving, precisionrequirements for process applications or the need to be able to supplyhot water too.

On the basis of your requirements, the following diagram makes itpossible to select the unit that best meets them. I t also provides furtherinformation onAdapt iv eFunct ion Plu s andAdapt iv eFunction adaptive logics relative to the different versions in the range.

Adapti veFunction

TCAEY-THAEY 115233 with STANDARDcontrolTXAEY 117133 with control

TheAdapt iv eFunct ion control logic makes it possible to adapt thechiller/heat pump operating parameters to the working conditions of thesystem in which it is installed, working partially as a water buffer tanksimulator. This makes it possible to reduces the litres/kW of the systemitself, guaranteeing compressor safety and the reliability of the machineover time. Approximately 4 litr es/kWare required in a system fitted witha chiller withAdapt iv eFunction adaptive control and at least 10litres/kW in a system fitted with a chiller without adaptive control.However, it is evident that in process applications where more accuratewater temperature control is required, it is always preferable to use awater buffer tank or a greater system water content, which guaranteeshigh system thermal inertia.

Standard cooling orheating applications

Energy-savingapplications

Precision applications(recommended set-up

ASP1-ASP2)

Energy-savingapplications with hotwater production.


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Adapti veFunction Plus

TCAEY-THAEY 115233 with control

The newAdapt iv eFunct ion Plu s adaptive regulation has beenexclusively patented byRHOSS S.p.A. It is the result of a longpartnership with theUniversity of Padua. The various algorithmdevelopment operations were implemented and validated on units in theCompact-Y range in the RHOSS S.p.A. Research&DevelopmentLaboratoryusing numerous test campaigns.

Objectives To guarantee optimal unit operation in the system in which it isinstalled. Evolved adapti ve logic. To obtain the best performance from a chiller in terms of energyefficiency at full and partial capacities. Low consumption chiller.

Operating logicIn general, the actual control logics on water chillers/heat pumps do notconsider the characteristics of the system in which the units areinstalled; they usually regulate the return water temperature and arepositioned so as to ensure the operation of the chillers, giving lesspriority to the system requirements.The newAdapt iv eFunct ion Plu s adaptive logic counters these logicswith the objective of optimising the chiller operation on the basis of thesystem characteristics and the effective thermal load. The controllerregulates the delivery water temperature and adjusts itself, as and whenrequired, to the relative operating conditions using: the information contained in the return and delivery watertemperature to estimate the working conditions thanks to a certainmathematical formula; a special adaptive algorithm that uses this estimate to vary thevalues and the start-up and switch-off limit values of the compressors;the optimised compressor start-up management guarantees a precisionwater supply to the user, reducing the fluctuation around the set-pointvalue.

Main functions

Effici ency or PrecisionThanks to the evolved control, it is possible to run the chiller on twodifferent regulation settings to obtain the best possible performance interms of energy efficiency and considerable seasonal savings, or highwater delivery temperature precision:

1. Low consumption chiller:Economy optionIt is well known that chillers work at full capacity for just a very smallpercentage of their operating time, while they work at partial capacityfor most of the season. Therefore, the power they need to supplygenerally differs from the nominal design power, and operation atpartial capacity has a noticeable effect on seasonal energyperformance and consumption.This makes it necessary to run the unit so that it is as efficient as

possible at partial capacity. T he controller therefore ensures that thewater delivery temperature is as high as possible (when operating asa chiller) or as low as possible (when operating as a heat pump)whilst compatible with the thermal loads, meaning that it is on asliding scale, unlike in traditional systems. T his prevents energywastage linked to the maintenance of pointlessly oneroustemperature levels for the chiller, ensuring that the ratio between thepower to be supplied and the energy to be used to produce it isalways at an optimum level. Finally the right level of comfort isavailable to everyone!

Summer season: a unit that operates with asliding set-point enables seasonal energysavings of around 8% compared to a traditionalunit that operates with a fixed set-point.

03

X

Y

4 5 6 7 8 9 10

100

200

300

400

500

600

700

800

900

X Year divided into months(1 January, 2 February, etc.).

Y Energy consumption (kWh).

Unit with fixed Set-point

Unit with sliding Set-point

W inter season: a unit that operates with asliding set-point enables seasonal energysavings of around 13% compared to atraditional unit that operates with a fixed set-point. Calculations carried out demonstrate thatseasonal consumption is equivalent to that of aCLASS A machine.

0 9 10 11 12 1 2 3 4

200

400

600

800

1000

1200

1400

1600

Y

X

XYear divided into months(1 January, 2 February, etc.).

Y Energy consumption (kWh).

Unit with fixed S et-point


Annu al: efficiency over the annual operation ofthe unit in heat pump mode.

Ad apt iveFunct ion Plu s, with the Economyfunction, enables the chiller assembly tooperate energy-saving programmes whilst stillproviding the required level of service.

2,01 2 3 4 5 6 7 8 9 10 11 12

2,5

3,0

3,5

4,0

4,5

5,0

5,5

6,0

X

Y

XYear divided into months(1 January, 2 February, etc.).

YEnergy efficiencykWh supplied / kWh absorbed.Unit with fixed Set-point


Analysis performed by c omparing the operation of a Compact-Y heat pump unit withAdapti veFuncti on Plus logi c that operates with a fixed set-point (7C in the summer and45C i n the winter) or with a sliding set-point (range between 7 and 14 C i n the summer, range betw een 35 and 45C in the winter) for an office building in Milan.


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2. High pr ecision: Precision optionIn this operating mode, the unit works at a fixed set-point and, thanks to the delivery water temperature control and the evolved regulation logic, at acapacity of between 50% and 100% it is possible to guarantee an average fluctuation from the water supply temperature of approximately 1.5Cfrom the set-point value compared to an average fluctuation over time of approximately 3C, which is normall y obtained with standard return control.The Preci sion option thus guarantees precision and reliability for all those applications that require a regulator that guarantees a more accurateconstant water supply temperature, and where there are particular damp control requirements. However, in process applications it is alwaysadvisable to use a water buffer tank or a greater system water content to guarantee higher system thermal inertia.

FC

s

s fluctuationFC capacity

Unit with water buffer tank, 4 litres/kW in the system andreturn control.Unit with water buffer tank, 2 litres/kW in the system anddelivery control with PrecisionAdapt iv eFunct ion Plu sfunction

The chart i llustrates the fluctuations of the water temperature from the set value for the various capaciti es, demonstrating how a unit wi th delivery control and theAdapti veFunc tion P lus Precision functi on guarantees greater water supply temperature precision.

Virtual Tank: guaranteed reliability, even with water in the pipes onlyA low water content in the system can cause the chiller units/heat pumps to be unreliable and can generate system instability and lack of performance.Thanks to the Virtual Tankfunction, this is no longer a problem. The unit can operate in s ystems with just 2 litr es/kW in the pipes given that the controlis able to compensate for the lack of inertia specific to a water buffer tank, "muffling" the control signal, preventing the compressor from switching onand off in an untimely fashion and reducing the average fluctuation of the set-point value.

t

T

20000

2

4

6

8

10

12

14

3000 4000 5000 6000 7000 8000 9000

T1

T Water temperature (C)t Time (s)

T1 Set-point temperatureDelivery temperature with Virtual Tank

Delivery temperature without Virtual Tank

The chart s hows the various chiller outlet temperatures considering capaci ty of 80%. We can observe how the temperatures of the unit withAdapti veFuncti on Plus l ogicand the Virtual Tankfunction is far less varied and more s table over time, w ith average temperatures closer to the working set-point compared to a uni t without the VirtualTank functi on. Moreover, we can see how the unit w ithAdapti veFuncti on Plus logic and the Virtual Tankfuncti on sw itches the compressor on less often over the same

period of time, w ith obvious advantages in terms of energy consumption and sys tem reliability.

ACM Autotuning compr essor managementAdapt iv eFunct ion Plu s enables the Compact-Y units to adapt to the system they are serving, s o as to always identify the best compressor operatingparameters in the different working conditions.During the initial operating phases, the special Autot un ing function enables the Compact-Y unit withAd apt iv eFunct ion Plus to estimate the thermalinertia characteristics that regulate the system dynamics. The function, which is automatically activated when the unit is s witched on for the first time,executes a number of set operating cycles, during which it processes the information relative to the water temperatures. It is thus possible to estimatethe physical characteristics of the system and to identify the optimal value of the parameters to be used for the control.At the end of this initial auto-estimate phase, the Autot un ing function remains active, making it possible to adapt the control parameters quickly toevery change in the water circuit and thus in the s ystem water contents.


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TCAEY-THAEY 115233 construction features

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TCAEY-THAEY 115233 models

Construction featuresStand ard i nstall ation

Load-bearing structure and panels ingalvanised and painted sheet steel; base ingalvanised sheet steel. Hermetic, Scroll-type rotary compressors,complete with internal thermal protection andcrankcase heater (for models 127233)

activated automatically when the unit stops (aslong as the power supply to the unit ispreserved). Water side, braze welded plate heatexchanger in stainless s teel, complete withantifreeze electric heater and suitably insulated. Air side heat exchanger comprised of a coilof copper pipes and aluminium fins. Double electric axial fan with external rotor,equipped with internal thermal protection andcomplete with protection grille for models115130 and individual fan for models 133-233. Male threaded water connections. Differential pressure switch that protects theunit from any interruptions to the water flow. Refrigerant circuit made from annealed

copper piping (EN 12735-1-2) complete with:drier filter, charge connections, safety pressureswitch on the high pressure side, pressureswitch on the low pressure side, safety valve(for models 127233), thermostatic expansionvalve ( 2 for THAE Y, 3 for models 133-233),cycle inversion valve (for THAEY), liquidreceiver (for THAEY) and check valves (2 forTHAEY), and gas separator (for models 133-233). Unit with IP 24 level of protection. Possibility to select two controls: STANDARD, withAd apt iv e Funct ion; compatible withAdapt iveFunction Plus. The unit is complete with the R410A

refrigerant charge.

Potential installations

Standard Installation without pump (onlyavailable for models 133 and 233).Pump P1 Installation with pump.Pump P2 Installation with high static pressurepump for models 133 233 (available as afactory fitted accessory).Tank & Pump ASP1 Installation with pumpand water buffer tank. The inertial water buffertank is installed on the water circuit deliverypipe.Tank & Pump ASP2 Installation with highstatic pressure pump and storage pump for

models 133 233 (available as a factory fittedaccessory). The inertial water buffer tank isinstalled on the water circuit delivery pipe.

Electri cal panel

Option wi th STANDARD control Electrical board accessible by opening thefront panel, conforming with current IECstandards, and which can be opened andclosed with a suitable tool. Complete with: electrical wiring arranged for power supply400-3ph+N-50Hz; auxiliary power supply 230V-1ph-50Hzdrawn from the main power supply; general isolator, complete with doorinterlocking isolator; automatic compressor protection switch;

protection fuse for auxiliary circuit; compressor power contactor; anti-disturbance network filter; compressor protection phase sequencemonitor;

unit protection against lack of a powersupply phase; transformer for electronic control; user interface terminal board; remote unit control. Programmable electronic board withmicroprocessor, controlled by the keypadinserted in the machine. This electronic board performs the followingfunctions: Regulation and management of the inletwater temperature set points; of cycle reversal(THAEY); of the safety timer delays; of thecirculating pump; of the compressor and systempump hour-run meter; of temperature defrostcycles (THAE Y); of the electronic anti-freeze

protection which cuts in automatically when themachine is s witched off; and of the functionswhich control the operation of the individualparts making up the machine; complete protection of the unit, automaticemergency shutdown and display of the alarmswhich have been activated; visual indication of the programmed setpoints via the display; of the in/out watertemperature via the display; of the alarms viathe display; and of cooling/heat-pump operatingmode via led (THAEY); self-diagnosis with continuous monitoring ofthe functioning of the unit; user interface menu; alarm code and description;

Advanced functions: set up for serial connection (KIS and KCHaccessory); check-up and monitoring of scheduledmaintenance status; testing of the units assisted by computer; self-diagnosis with continuous monitoring ofthe functioning of the unit; withAd apt ive Fun ct ion.

Option with compatiblecontrol

Electrical board accessible by opening thefront panel, conforming with current IECstandards, and which can be opened and

closed with a suitable tool. Complete with: electrical wiring arranged for power supply400-3ph+N-50Hz; auxiliary power supply 230V-1ph-50Hzdrawn from the main power supply; general isolator, complete with doorinterlocking isolator; automatic compressor protection switch; protection fuse for auxiliary circuit; compressor power contactor; remote unit control.

Programmable electronic board withmicroprocessor, controlled by the keypadinserted in the machine. This electronic board performs the followingfunctions: Regulation and management of the outletwater temperature set points; of cycle reversal(THAEY); of the safety timer delays; of thecirculating pump; of the compressor and systempump hour-run meter; of the electronic anti-freeze protection which cuts in automaticallywhen the machine is switched off; and of thefunctions which control the operation of theindividual parts making up the machine; complete protection of the unit, automaticemergency shutdown and display of the alarmswhich have been activated; compressor protection phase sequencemonitor; unit protection against low or high phasepower supply voltage; visual indication of the programmed setpoints on the display; of the inlet/outlet watertemperature via the display; of the alarms viathe display; and of cooling/heat-pump operatingmode via LEDs (for THAEY models); self-diagnosis with continuous monitoring ofthe functioning of the unit; user interface menu; alarm code and description; alarm history management (menuprotected by manufacturer password). The following is memorised for each alarm: date and time of intervention (if the KSCaccessory is present); alarm code and description; inlet/outlet water temperatures when the

alarm intervened; alarm delay time from the switch-on of theconnected device; compressor status at moment of alarm; Advanced functions: configured for serial connection (KR S485,KFTT10, KRS232 and KUS B accessory); possibility to have a digital input for remotemanagement of the double set point (contactRHOSSS.p.A. pre-sales ). possibility to have an analogue input for thescrolling set-point via a 4-20mA remote signal(contact RHOSSS.p.A. pre-sales );

configured for management of time bandsand operation parameters with the possibility ofdaily/weekly operating programs (KSC

accessory); check-up and monitoring of scheduledmaintenance status; testing of the units assisted by computer; self-diagnosis with continuous monitoring ofthe functioning of the unit. Set-point regulation via the

Ad apt iveFunct ion Plu s with two options: fixed set-point (Preci sion options); scrolling set-point (Economyoption).


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TCAEY-THAEY 115233 accessories

10

TCAEY-THAEY 115233

accessories

Factory fitted accessories

P2 Installation with high static pressure pump(available for models 133 and 233).

ASP2 Installation with high static pressurepump and water buffer tank (only available formodels 133 and 233).RAA water buffer tank antifreeze electricheater (available for installations ASP1 ASP2).RPB Coil protection networks.RCC Compressor crankcase heater (formodels 115124).TRD Thermostat with desuperheater (DS 15-DS151) and recovery unit (RC100-RC100 1)inlet water temperature display, with possibilityto set the activation set-point of an externalregulation device (if present).

Factory fitted accessorieswith STANDARD control

FI10 1 Proportional electronic device for thepressurised and continuous regulation of the

fan rotation speed down to an external airtemperature of -10C when operating as achiller and up to an external air temperature of30C when operating as a heat pump (formodels with STANDARDelectronic control).DS15 1 Desuperheater complete withantifreeze electric heater, the accessory is alsocomplete with condensation control (F I10 1 formodels 133-233).RC100 1 Heat recovery unit with 100%recovery, complete with antifreeze electronicheater and condensation control (FI10 1 formodels 133-233).

Factory fitted accessorieswith compatible control

FI10 1 Proportional electronic device for thepressurised and continuous regulation of thefan rotation speed down to an external airtemperature of -10C when operating as achiller and up to an external air temperature of30C when operating as a heat pump.DS15 Desuperheater complete withantifreeze electric heater and condensationcontrol (FI10 for models 133-233).RC100 Heat recovery unit with 100% heatrecovery, complete with antifreeze electricheater and condensation control (FI10 formodels 133-233).DSP Double set-point via digital consensus(not compatible with the CS accessory), only for

models with compatible controland Precision option. Handled as a specialaccessory by our pre-sales office.CS Scrolling set-point via 4-20 mA analoguesignal (incompatible with the DSP accessory),only for models with compatiblecontrol andPr ecision option. Handled as aspecial accessory by our pre-sales office.

Accesso ries supp lied lo ose

KSA Anti-vibration supports.

Accesso ries supp lied lo osewith STANDARD control

KTR1 Remote keypad for remote control, withthe same functions as the one built into the unit.KFI1 Proportional electronic device for thepressurised and continuous regulation of thefan rotation speed down to an external airtemperature of -10C when operating as achiller and up to an external air temperature of30C when operating as a heat pump.KIS RS485 serial interface for logical dialoguewith building automation and supervisionsystems (supported protocols: proprietaryprotocol; ModBus

RTU).

KCH RS232 hardware key for connection tosupervision systems, to be associated with oneor more KIS serial interface modules in thecase of centralised unit management (200 unitscan be connected at a distance of up to 1,000

m).

Accessories supp lied lo osewith compatible control

KTR Remote keypad for control at a distance

with rear illuminated LCD display (samefunctions as the one built into the machine).KFI Proportional electronic device for thepressurised and continuous regulation of thefan rotation speed down to an external airtemperature of -10C when operating as achiller and up to an external air temperature of30C when operating as a heat pump.KSC Clock card to display date/time and toregulate the machine with daily/weeklystart/stop time bands, with the possibility tochange the set-points.KRS485 RS485 serial interface card to createdialogue networks between cards (maximum of200 units at a maximum distance of 1,000) andbuilding automation, external supervision

systems or RHOSSS.p.A. supervision s ystems(supported protocols: proprietary protocol;Modbus RTU).KFTT10 FTT10 serial interface card forconnection to supervision systems (LonWorkssystem compliant with Lonmark8090-10protocol with chiller profile).KISI C AN bus serial interface (Controller AreaNetwork compatible with evolved hydronicsystem for integrated comfortmanagement (protocol supported CanOpen).KRS232 RS485/RS232 serial converter forinterconnection between RS485 serial networkand supervision systems with serial connectionto PC via RS232 serial port (RS232 cableprovided).

KUSB RS485/USB serial converter forinterconnection between RS485 serial networkand supervision systems with serial connectionto PC via USB port (USB cable provided).KMDM GSM 900-1800 modem kit to beconnected to the unit or the management of theparameters and any alarm signals on a remotebasis. The kit consists of a GSM modem withrelative RS 232 card. It is necessary to purchasea SIM data card, not supplied byRHOSSS.p.A.KRS RHOSSS.p.A. supervision software for

unit monitoring and remote management. Thekit consists of a CD-Rom and hardware key.


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TXAEY 117133 construction features

11

TXAEY 117133 models

Construction featuresStand ard i nstall ation

RHOSSS.p.A. patented polyvalent system

Italian. Load-bearing structure in galvanised andRAL 9018 painted sheet steel, coated on theinside with sound-absorbing material, dividedinto: sound-proofed technical compartment forhousing the compressors, the electrical boardand the main components in the refrigerantcircuit. aeraulic compartment for housing the heatexchange coils, the motor-driven fans and thepump assembly accessory if present. Hermetic, Scroll-type rotary compressors,complete with internal thermal protection andcrankcase heater activated automatically whenthe unit stops (as long as the power supply tothe unit is preserved). Proportional electronic device for thepressurised and continuous regulation of thefan rotation speed down to an external airtemperature of -10C when operating as a

chiller and up to an external air temperature of40C when operating as a heat pump. Stainless steel plate heat exchangers on theprimary and secondary water circuits, completewith closed cell polyurethane foam rubberinsulation and antifreeze electric heaters. Differential pressure switch on all heatexchangers. Air side exchanger comprised of a copperpipe coil flared into aluminium fins with"corrugated" design in order to increase heatexchange efficiency. Male threaded water connections. Refrigerant circuit realised with annealedcopper piping (EN 12735-1-2) and welded withsilver alloy. Complete with 2 cycle inversion

valves, charge connections, high and lowpressure switch, 2 thermostatic valves formodels 117-130 and 2 for models 133, 4solenoid valves, a drier filter, 2 liquid receivers,a gas separate, a humidity indicator, 3 non-return valves and a safety valve (for models130-133). Primary and secondary water circuit madefrom annealed copper piping (EN 12735-1-2)and welded with silver alloy. The primary watercircuit also comes complete with:pump, safety valve (3 bar), pressure gauge,expansion tank, manual bleed valves anddrainage valves. Secondary water circuit made fromannealed copper piping (EN 12735-1-2) and

welded with silver alloy, complete withdifferential pressure switch. Compatible control with

Ad apt iveFunct ion on the primary circuitregulation. Unit with IP 24 level of protection. The unit is complete with the R410Arefrigerant charge.

Potential installations

Standard Installation without pump (onlyavailable for model 133).Pump P1 Installation with pump.Pump P2 Installation with high static pressurepump for model 133 (available as a factoryfitted accessory).

Tank & Pump ASP1 Installation with pumpand water buffer tank (only available for model133).Tank & Pump ASP2 Installation with highstatic pressure pump and storage pump formodel 133 (available as a factory fittedaccessory).

EXP electrical board characteristics

Electrical board accessible by opening thefront panel, conforming with current IECstandards, and which can be opened andclosed with a suitable tool. Complete with: electrical wiring arranged for power supply

400V-3ph+N-50Hz auxiliary power supply 230V-1ph-50Hzdrawn from the main power supply; general isolator, complete with doorinterlocking isolator; automatic compressor protection switch; automatic pump protection switch (onlyavailable for model 133); protection fuse for auxiliary circuit; compressor power contactor; pump power contactor (only available formodel 133); unit remote controls. Programmable electronic board withmicroprocessor, controlled by the keypadinserted in the machine.

This electronic board performs the followingfunctions: regulation and management of the set pointsfor inlet water temperature; cycle inversion;safety timer delays; circulating pump;compressor and system pump hour-run meter;of pressure defrost cycles; electronic anti-freezeprotection which cuts in automatically when themachine is s witched off; and the functionswhich control the operation of the individualparts making up the machine; complete protection of the unit, automaticemergency shutdown and display of the alarmswhich have been activated; compressor protection phase sequencemonitor unit protection against low or high phasepower supply voltage; visual indication of the programmed setpoints via the display; of the in/out watertemperature via the display; of the alarms viathe display; and of cooling/heat-pump operatingmode via display; self-diagnosis with continuous monitoring ofthe functioning of the unit; user interface menu; alarm code and description; alarm history management (menu protectedby manufacturer password).

The following is memorised for each alarm: date and time of intervention (if the KSCaccessory is present); alarm code and description; inlet/outlet water temperatures when thealarm intervened; alarm delay time from the switch-on of theconnected device; compressor status at moment of alarm; Advanced functions: configured for serial connection (KR S485,KFTT10, KRS232 and KUS B accessory); possibility to have a digital input for remotemanagement of the double Set-point (contactRHOSSS.p.A. pre-sales ). possibility to have an analogue input for thescrolling set-point via a 4-20mA remote signal(contact RHOSSS.p.A. pre-sales ); configured for management of time bandsand operation parameters with the possibility ofdaily/weekly operating programs (KSC

accessory); check-up and monitoring of scheduledmaintenance status; testing of the units assisted by computer; self-diagnosis with continuous monitoring ofthe functioning of the unit; Adapt ive Funct ion on the regulation of theprimary circuit.


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TXAEY 117133 accessories

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TXAEY 117133 accessories

Factory fitted accessories

P2 Installation with high static pressure pump(available for model 133).

ASP2 Installation with high static pressurepump and water buffer tank (only available formodels 133 and 233).RAA water buffer tank antifreeze electricheater (available for installations ASP1

ASP2).RPB Coil protection networks.DSP D ouble set-point by means of digitalconsensus (incompatible with the CSaccessory). Handled as a special accessory byour pre-sales office.CS Scrolling set-point by means of the 4-20mA analogue system (incompatible with theDSP accessory). handled as a specialaccessory by our pre-sales office.

Accesso ries supp lied lo ose

KSA Anti-vibration supports.KTR Remote keypad for control at a distancewith rear illuminated LCD display (samefunctions as the one built into the machine).KSC Clock card to display date/time and toregulate the machine with daily/weeklystart/stop time bands, with the possi bility to

change the set-points.KRS485 RS485 serial interface card to createdialogue networks between cards (maximum of200 units at a maximum distance of 1,000) andbuilding automation, external supervisionsystems or RHOSSS.p.A. supervision s ystems

(supported protocols: proprietary protocol;Modbus RTU).KFTT10 FTT10 serial interface card forconnection to supervision systems (LonWorkssystem compliant with Lonmark8090-10protocol with chiller profile).KISI C AN bus serial interface (Controller AreaNetwork compatible with evolved hydronicsystem for integrated comfortmanagement (protocol supported C anOpen).

KRS232 RS485/RS232 serial converter forinterconnection between RS 485 serial networkand supervision systems with serial connectionto PC via RS232 serial port (RS232 cableprovided).KUSB RS485/USB serial converter forinterconnection between RS 485 serial networkand supervision systems with serial connectionto PC via USB port (USB cable provided).KMDM GSM 900-1800 modem kit to beconnected to the unit or the management of theparameters and any alarm signals on a remotebasis. The kit consists of a GSM modem withrelative RS232 card. It is necessary to purchasea SIM data card, not supplied byRHOSSS.p.A.

KRS RHOSS S.p.A. supervision software forunit monitoring and remote management. Thekit consists of a CD-Rom and hardware key.


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TCAEY 115130 technical data

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Technical data

Tab le A: Technic al data

TCAEY mod el 115 117 122 124 127 130

Nominal cooling capacity (*) kW 15,39 17,41 22,70 24,27 26,85 29,06

E.E.R. 2,76 2,67 2,76 2,62 2,59 2,44

E.S.E.E.R. 3,14 3,12 3,43 3,07 3,16 2,90

Sound pressure (**) dB(A) 50 50 52 52 53 54

Sound power (***) dB(A) 72 72 75 75 76 77

Scroll/step compressor No. 1/1 1/1 1/1 1/1 1/1 1/1Fans No. x kW 2x0.14 2x0.14 2x0.24 2x0.24 2x0.24 2x0.24Exchanger water contents l 1,33 1,33 1,90 2,20 2,40 2,60Water side exchanger nominal water flow (*) l/h 2647 2994 3891 4175 4618 4998Nominal pressure drops, water side exchanger (*) kPa 32,40 41,28 34,74 30,58 31,86 32,09

Residual static pressure (P1 installation) (*) kPa 147 130 130 125 110 105

Residual static pressure (ASP1 installation) (*) kPa 130 110 93 88 94 90

Tank water content (ASP1 installation) l 35 35 45 45 45 45R410A refrigerant charge See serial No. platePolyester oil charge See compressor plate

Electri cal data

Absorbed power (*) () kW 5,58 6,51 8,20 9,28 10,35 11,93

Pump absorbed power kW 0,57 0,57 0,57 0,57 0,70 0,70

Electrical power supply V-ph-Hz 400-3+N-50Auxiliary power supply V-ph-Hz 230-1-50Nominal current () A 13,1 14,3 18,8 20,7 21,0 24,6

Maximum current () A 16,0 17,0 21,0 22,7 25,0 27,0Starting current A 79 105 116 123 122 134Pump absorbed current A 2,8 2,8 2,8 2,8 5,1 5,1

Dimensions

Width (L) P1 installation mm 1230 1230 1230 1230 1535 1535

Width (L) ASP1 installation mm 1522 1522 1522 1522 1822 1822Height (H) mm 1090 1090 1280 1280 1510 1510Depth (P) mm 580 580 600 600 695 695Water connections 1 1 1 1 1 1

(*) In the following conditions: condenser inputair temperature 35C; chilled water temperature7C; temperature differential at evaporator 5C.

(**) Sound pressure level in dB(A), measured ata distance of 5 m from the unit, with adirectionality factor of 2.

(***) Sound power level in dB (A) based onmeasurements made in accordance with theUNI EN-ISO 3744 standard and Eurovent 8/1.

() Total current value, including the currentabsorbed by the pump.

() Power absorbed by the unit without motor-driven pump.

N.B.:The values for available static pressure of thepumps and the pressure drops of theexchangers can be found on page 35.The calculation of the E.E.R. and C.O.P. doesnot take the pump absorption into account.

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TCAEY 133233 technical data

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Table A : Technical data

TCAEY mod el 133 233

Nominal cooling capacity (*) kW 33,99 32,45

E.E.R. 2,56 2,64

E.S.E .E.R. 2,84 2,93

Sound pressure (**) dB(A) 57 57

Sound power (***) dB(A) 81 81

Scroll/step compressor No. 1/1 2/2Fans No. x kW 1x0.61 2x0.61Exchanger water contents l 3,20 3,20Water side exchanger nominal water flow (*) l/h 5846 5581

Nominal pressure drops, water side heat exchanger (*)Standard installation

kPa 30,26 27,63

Residual static pressure (P1 installation) (*) kPa 134 134


Residual static pressure (ASP 1 installation) (*) kPa 102 105

Residual static pressure (ASP 2 installation) (*) kPa 198 202

Tank water content (ASP1 ASP2 installation) l 80 80R410A refrigerant charge See serial no. platePolyester oil charge See compressor plate

Electri cal data

Total absorbed power (*) () kW 13,30 12,30

Pump absorbed power (P1/ASP 1) kW 0,70 0,70

Pump absorbed power (P2/ASP 2) kW 1,5 1,5

Electrical power supply V-ph-Hz 400-3+N-50

Auxiliary power supply V-ph-Hz 230-1-50Nominal current () A 22,0 20,0Maximum current () A 25,0 26,0Starting current A 200 115Pump absorbed power (P1/ASP 1) A 5,1 5,1Pump absorbed power (P2/ASP 2) A 8,6 8,6

Dimensions

Width (L) mm 1660 1660

Height (H) mm 1570 1570Depth (P) mm 1000 1000Water connections 2 2

(*) In the following conditions: condenser input

air temperature 35C; chilled water temperature7C; temperature differential at evaporator 5C.

(**) Sound pressure level in dB(A), measured ata distance of 5 m from the unit, with adirectionality factor of 2.

(***) Sound power level in dB (A) based onmeasurements made in accordance with theUNI EN-ISO 3744 standard and Eurovent 8/1.

() Add the power and current values of the

pumps (P 1/P2 or ASP1/ASP2) to obtain thepower and current absorbed by the unit.


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THAEY 115130 technical data

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Table A : Technical d ata

THAEY mod el 115 117 122 124 127 130

Nominal cooling capacity (*) kW 15,27 17,41 22,26 23,64 26,33 28,58

E.E.R. 2,73 2,70 2,81 2,52 2,61 2,44

E.S.E.E.R. 3,14 3,12 3,43 3,07 3,16 2,90

Nominal heating capacity (**) kW 16,84 17,88 23,94 26,14 30,69 34,42

C.O.P. 3,05 2,94 3,02 2,92 3,07 3,10

Sound pressure (***) dB(A) 50 50 52 52 53 54

Sound power (****) dB(A) 72 72 75 75 76 77

Scroll/step compress or No. 1/1 1/1 1/1 1/1 1/1 1/1Fans No. x kW 2x0.14 2x0.14 2x0.24 2x0.24 2x0.24 2x0.24Exchanger water contents l 1,33 1,33 1,90 2,20 2,40 2,60Water side exchanger nominal water flow (*) l/h 2626 2994 3828 4066 4529 4916Nominal pressure drops, water side exchanger (*) kPa 32,40 41,28 34,74 30,58 31,86 32,09

Residual static pressure (P1 installation) (*) kPa 147 130 131 125 117 110

Residual static pressure (ASP1 installation) (*) kPa 131 110 97 91 97 90

Tank water content (ASP1 installation) l 35 35 45 45 45 45R410A refrigerant charge See serial No. platePolyester oil charge See compressor plate

Electri cal data

Absorbed power in summer operation (*) () kW 5,58 6,45 7,93 9,38 10,10 11,70

Absorbed power in winter operation (**) () kW 5,53 6,08 7,92 8,95 10,00 11,11

Pump absorbed power kW 0,57 0,57 0,57 0,57 0,70 0,70Electrical power supply V-ph-Hz 400-3+N-50Auxiliary power supply V-ph-Hz 230-1-50Nominal current in summer operation (*) () A 12,9 15,0 18,0 21,3 21,0 24,2Nominal current in winter operation (**) () A 15,0 14,5 18,3 20,5 20,7 23,2Maximum current () A 16,0 17,0 21,0 22,7 25,0 27,0Starting current A 79 105 116 123 122 134Pump absorbed current A 2,7 2,7 2,7 2,7 5,1 5,1

Dimensions

Width (L) (P1 installation) mm 1230 1230 1230 1230 1535 1535Width (L) (ASP1 installation) mm 1522 1522 1522 1522 1822 1822Height (H) mm 1090 1090 1290 1280 1510 1510Depth (P) mm 580 580 600 600 695 695Water connections 1 1 1 1 1 1

(*) In the following conditions: condenser inletair temperature 35C; chilled water temperature7C; temperature differential at evaporator 5C.

(**) In the following conditions: evaporator inletair temperature 7C D.B., 6C W.B.; hot watertemperature 45C; temperature differential atthe condenser 5C.

(***) Sound pressure level in dB(A), measuredat a distance of 5 m from the unit, with adirectionality factor of 2.

(****) Sound power level in dB (A) based onmeasurements made in accordance with theUNI EN-ISO 3744 standard and Eurovent 8/1.

()Total current value, including the currentabsorbed by the pump.



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THAEY 133233 technical data

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Tabl e A: Techni cal data

THAEY mod el 133 233

Nominal cooling capacity (*) kW 33,99 32,45

E.E.R. 2,56 2,64

Nominal heating capacity (**) kW 39,14 37,49

C.O.P. 2,94 3,05

Sound pressure (***) dB(A) 57 57

Sound power (****) dB(A) 81 81

Scroll/step compressor No. 1/1 2/2Fans No. x kW 1 x 0.61 1 x 0.61Heat exchanger water contents l 3,20 3,20Water side heat exchanger nominal water flow (*) l/h 5846 5581

Nominal pressure drops, water side exchanger (*) Standard installation kPa 30,26 27,63



Residual static pressure (ASP1 installation) (*) kPa 102 107

Residual static pressure (ASP2 installation) (*) kPa 198 202

Tank water content (ASP1 ASP2 installation) l 80 80R410A refrigerant charge See serial No. platePolyester oil charge See compressor plate

Electri cal data

Absorbed power in summer operation (*) () kW 13,30 12,30

Absorbed power in winter operation (**) () kW 13,30 12,30

Pump absorbed power (P1/ASP 1) kW 0,70 0,70Pump absorbed power (P2/ASP 2) kW 1,5 1,5

Electrical power supply V-ph-Hz 400-3+N-50Auxiliary power supply V-ph-Hz 230-1-50Nominal current in summer operation (*) () A 22,0 20,0Nominal current in winter operation (**) () A 20,0 19,0Maximum current () A 25,0 26,0Starting current A 200 115Pump absorbed power (P1/ASP 1) A 5,1 5,1Pump absorbed power (P2/ASP 2) A 8,6 8,6

Dimensions

Width (L) mm 1660 1660Height (H) mm 1570 1570Depth (P) mm 1000 1000

Water connections 2 2

(*) In the following conditions: condenserinlet air temperature 35C; chilled watertemperature 7C; temperature differential atevaporator 5C.

(**) In the following conditions: evaporatorinlet air temperature 7C D.B., 6C W.B.; hotwater temperature 45C; temperaturedifferential at the condenser 5C.

(***) Sound pressure level in dB(A),measured at a distance of 5 m from the unit,

with a directionality factor of 2.

(****) Sound power level in dB (A) based onmeasurements made in accordance with theUNI EN-ISO 3744 standard and Eurovent8/1.

() Add the power and current values of thepumps (P 1/P2 or ASP1/ASP2) to obtain thepower and current absorbed by the unit.

N.B.:The values for available static pressure ofthe pumps and the pressure drops of theexchangers can be found on page 35.The calculation of the E.E.R. and C.O.P.does not take the pump absorption intoaccount.

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TXAEY 117130 technical data

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Tabl e A: Technical data

TXAEY model 117 124 130

Cooling o peration inAUTOMATIC 1mode

Nominal cooling capacity (*) kW 17,41 23,64 28,58

E.E.R. (*) 2,70 2,52 2,44

E.S.E .E.R. (*) 3,12 3,07 2,90

Cooling operation with heat recover y inAUTOMATIC 2 modeNominal cooling capacity in main heat exchanger (**) kW 15,72 23,03 27,10

Nominal heating capacity in secondary heat exchanger (**) kW 20,81 30,35 37,21C.O.P. (**) 6,62 6,72 6,13Heat pu mp operation in modes SELECT 1-2/AUTOMATIC 3

Nominal heating capacity (***)kW 17,91 26,14 34,42

C.O.P. (***)2,95 2,92 3,14

Sound pressure (****) dB(A) 50 52 54

Sound power (*****) dB(A) 72 75 77

Scroll/step compressor No. 1/1 1/1 1/1Circuits No. 1 1 1Fans No. x kW 2 x 0.14 2 x 0.24 2 x 0.24Main exchanger nominal flow (*) l/h 2995 4066 4916Nominal pressure drops in main exchanger (*) kPa 41 29 30Water content in main exchanger l 1,33 2,20 2,60

Residual static pressure at main heat exchanger (*) kPa 130 131 110

Main/secondary recovery exchanger nominal flow rate (***) l/h 3579 5220 6400Secondary recovery exchanger pressure drops (***) kPa 60 50 54Recovery exchanger water content l 1,33 2,20 2,60R410A refrigerant charge See serial No. platePolyester oil charge See compressor plate

(*) In the following conditions: condenserinput air temperature 35C; chilled watertemperature 7C; main heat exchanger(evaporator) temperature differential 5C.

(**) In the following conditions: chilled watertemperature 7C; temperature differential atmain exchanger (evaporator) 5C, secondaryexchanger (recovery) hot water outlettemperature 40/45C at nominal flow.

(***) In the following conditions: coil inlet airtemperature 7C D.B., 85% R.H.; mainexchanger (condenser/evaporator) orsecondary exchanger (recovery) hot wateroutlet temperature 40/45C at nominal flow.

(****) Level of sound pressure in dB(A)measured at a distance of 5 m from the unitwith a directionality factor of 2 (to obtain thevalue in open space, subtract 3 dB(A)).

(*****) Sound power level in dB (A) based onmeasurements made in accordance with theUNI EN-ISO 3744 standard and Eurovent8/1.

N.B.:The values for available static pressure ofthe pumps and the pressure drops of theexchangers can be found on page 40.The calculation of the E.E.R. and C.O.P.does not take the pump absorption intoaccount. H

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18

Electri cal data

Absorbed power inAUTOMATIC 1mode (*) () kW 6,45 9,38 11,70

Absorbed power inAUTOMATIC 2mode (**) () kW 4,95 7,37 9,79

Absorbed power inAUTOMATIC 3 / SELECT 2/ SELECT 1mode (***) () kW 6,08 8,95 11,11Pump absorbed power kW 0,57 0,57 0,70Electrical power supply V-ph-Hz 400-3+N-50Auxiliary power supply V-ph-Hz 230-1-50Nominal current () () A 15,0 21,3 24,2

Maximum current () A 17,0 22,7 27,0

Starting current A 105 123 134

Pump absorbed current A 2,7 2,7 5,1

Dimensions

Width (L) mm 1522 1522 1822Height (H) mm 1090 1280 1510Depth (P) mm 580 600 695Water connections 1 1 1 Recovery system water filling connection 1 1 1

(*) In the following conditions: condenser inputair temperature 35C; chilled water temperature7C; main heat exchanger (evaporator)temperature differential 5C.


(***) In the following conditions: coil inlet airtemperature 7C D.B., 85% R.H.; mainexchanger (condenser/evaporator) or

secondary exchanger (recovery) hot wateroutlet temperature 40/45C at nominal flow.

() The current value shown is the maximumfrom among the values measured in

AUTOMATICandSELECTmode in therespective nominal conditions.


() Total current value, including the currentabsorbed by the pump.


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19

Tabl e A: Techni cal data

TXAEY model 133

Cooling operation inAUTOMATIC 1modeNominal cooling capacity (*) kW 34,00

E.E.R. (*) 2,56

E.S.E.E.R. (*) 2,84Cooling operation with he at recov er y inAUTOMATIC 2 modeNominal cooling capacity in main heat exchanger (**) kW 32,40Nominal heating capacity in secondary heat exchanger (**) kW 44,20C.O.P. (**) 6,25Heat pu mp operation in modes SELECT 1-2/AUTOMATIC 3

Nominal heating capacity (***) kW 39,14

C.O.P. (***) 2,94

Sound pressure (****) dB(A) 57

Sound power (*****) 81

Scroll/step compressor No. 1/1Circuits No. 1Fans No. x kW 1 x 0.61Main exchanger nominal flow (*) l/h 5846Nominal pressure drops in main exchanger (*) kPa 32

Nominal pressure drops in main exchanger (**) kPa 42

Water content in main exchanger l 3,20Residual static pressure at the main heat exchanger (*) P1/P2 kPa 134 / 230Residual static pressure at the main heat exchanger (*) ASP 1/ASP 2 kPa 102 / 198Tank water content ASP1 / ASP2 l 80 / 80Main/secondary recovery exchanger nominal flow rate (***) l/h 7602Secondary recovery exchanger pressure drops (***) kPa 53

Recovery exchanger water content l 3,2R410A refrigerant charge See serial No. platePolyester oil charge See compressor plate

(*) In the following conditions: condenserinput air temperature 35C; chilled watertemperature 7C; main heat exchanger(evaporator) temperature differential 5C.


(***) In the following conditions: coil inlet airtemperature 7C D.B., 85% R.H.; mainexchanger (condenser/evaporator) orsecondary exchanger (recovery) hot wateroutlet temperature 40/45C at nominal flow.

(****) Level of sound pressure in dB(A)measured at a distance of 5 m from the unitwith a directionality factor of 2 (to obtain thevalue in open space, subtract 3 dB(A)).

(*****) Sound power level in dB (A) based onmeasurements made in accordance with theUNI EN-ISO 3744 standard and Eurovent8/1.

N.B.:The values for available static pressure ofthe pumps and the pressure drops of theexchangers can be found on page 40.The calculation of the E.E.R. and C.O.P.does not take the pump absorption intoaccount.

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Electri cal data

Absorbed power (P1/P2)AUTOMATIC 1mode (*) () kW 13,30

Absorbed power (P1/P2)AUTOMATIC 2mode (**) () kW 11,50

Absorbed power inAUTOMATIC 3 / SELECT 2/ SELECT 1mode (***) () kW 13,30Pump absorbed power P1 / P2 kW 0,70 / 1,50Electrical power supply V-ph-Hz 400-3+N-50Auxiliary power supply V-ph-Hz 230-1-50Nominal current () () A 22,0Maximum current () A 25,0Starting current A 200Pump absorbed power P1 / P2 A 5,1 / 8,6

Dimensions

Width (L) mm 1660Height (H) mm 1570Depth (P) mm 1000Water connections 1Recovery system water filling connection 1

(*) In the following conditions: condenser inputair temperature 35C; chilled water temperature7C; main heat exchanger (evaporator)temperature differential 5C.


(***) In the following conditions: coil inlet airtemperature 7C D.B., 85% R.H.; mainexchanger (condenser/evaporator) or

secondary exchanger (recovery) hot wateroutlet temperature 40/45C at nominal flow.

() The current value shown is the maximumfrom among the values measured in

AUTOMATICandSELECTmode in therespective nominal conditions.

() Add the power and current values of thepumps (P1/P2) to obtain the total value of thepower and current absorbed by the unit.


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TCAEY-THAEY-TXAEY 115233 technical data

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Energy effi ciency at partial loads - ESEER index

The E.E.R. index represents an estimate of the energy efficiency ofthe cooling unit in nominal design conditions. I n reality, the operatingtime of a chiller in nominal conditions is usually less than the operatingtime in partial load conditions. The E.S.E.E.R. (European Seasonal E.E.R.) is an index thatestimates the average seasonal energy efficiency of the cooling unit infour load and water temperature conditions. Generally, two waterchillers with the same E.E.R. may have different E.S.E.E.R. values. Infact, for a water cooling unit, the average energy efficiency depends on

design choices and on the temperature of inlet water at the condensingheat exchanger. The E.S.E .E.R. energy index, introduced by the EuropeanCommunity (Project E.E.C.C.A.C. - Energy Efficiency and Certificationof Central Air Conditioners), is characterised by the water temperatures(see table B) and by the energy weights that are assigned to the fourload conditions considered in the calculation: 100%, 75%, 50% and25%.

ESEER =3xEER 100%+33xEER 75%+41xEER 50% +23xEER 25%

100

where EER100% EER75% EER50% EER25% represent theefficiencies of the cooling unit in the four load conditions and at thetemperatures indicated in table B.The data is calculated using Eurovent methodology. The pump

absorption (if present) is not taken into consideration.

Table B : load and t emperature condit ions

Condenser inl et air temperature

Load E.S.E.E.R.

100% 35C75% 30C50% 25C25% 20C

Table C shows the E.E.R. and E.S.E.E.R. values for each model.The high values of energy efficiency at partial loads were achievedthanks to optimisation of the heat exchangers.

Table C : E.E.R. - E.S.E.E.R. for TCAEY - THAEY

Model E.E.R. E.S.E.E.R.

115 2,76 3,14117 2,67 3,12122 2,76 3,43124 2,62 3,07127 2,59 3,16130 2,44 2,90133 2,56 2,84233 2,64 2,93

Table C : E.E.R. - E .S.E.E.R. for T XAEY

Model E.E.R. E.S.E.E.R.

117 2,67 3,12124 2,62 3,07130 2,44 2,90133 2,56 2,84


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TXAEY 117133 operating principle

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TXAEY operating principle

The ecological polyvalent system wasdesigned byRHOSSto provide 2-pipe and 4-pipe systems with hot water from another heatexchanger (recovery) year-round, as well asacting as a traditional reversible-cycle waterchiller. The total heat recovery units also allowefficient energy rationalisation. The system can operate in two modes,

which can be selected by electronic control.These are calledAUTOMATICandSELECT. InAUTOMATICmode, the s ystem allows forfull recovery of the heat of condensation and/orthe production of chilled water. InSELECTmode, it allows for the productionof hot water by the secondary or main heatexchanger.

AUTOMATIC mode - multi-season In this mode the system automaticallymanages the requests for hot or chilled water,supplying chilled water to the main exchangerand hot water to the secondary exchanger,even simultaneously. Each request for hot or cold water issatisfied independently of every other request. When the secondary exchanger requires hotwater, the flow of gas delivered from the

compressor is directed towards the recovery. Ifchilled water is required at the same time, theunit operates as a water chiller. InAUTOMATICmode the unit therefore hasthree possible automatic operatingconfigurations: AUTOMATIC 1 (A1)- operation as an air-cooled water chiller for the production of chilledwater. AUTOMATIC 2 (A2)- operation as a waterchiller with total heat recovery for si multaneousproduction of hot and chilled water. AUTOMATIC 3 (A3)- operation as a heatpump for the production of hot water at thesecondary exchanger (recovery).

SELECT mode - multi-season In this mode, based on requests the systemprovides hot water to the main exchangerSELECT 1 (S1)or hot water to the secondaryexchanger SELECT 2 (S2). If simultaneousrequests are expected, priority of operationmust be established via the electronic control. If the request for hot water from the selectedheat exchanger is completely satisfied, the hotgas can be completely switched over to theother heat exchanger, provided this isrequested. The unit is programmed in the factory toprovide hot water with priority assigned to thesecondary exchanger. You can however modifythis setting from the electronic control panel. To summarise, operation inSELECTmodeoffers two possible automatic configurations: SELECT 1 (S1)- operation as a heat pumpfor the production of hot water at the mainexchanger. SELECT 2 (S2)- operation as a heat pumpfor the production of hot water at the mainexchanger.

Diagram ofAUTOMATICop erating mode

C

E

R

S

V

Diagram o fSELECToperating mode

C

E

R

V

S

Production of chilled water only at the main exchanger(A1).Production of chilled water at the main exchanger and hotwater at the secondary exchanger (A2) (recovery).Production of hot water only at the secondary exchanger(A3) (recovery).

S Air side condenser/evaporator.C Compressor.E Main exchanger (condenser/evaporator).R Secondary exchanger (recovery).V Lamination valve.

Production of hot water at themain exchanger (S1).Production of hot water at thesecondary exchanger (S2).

S Air side condenser/evaporator.C Compressor.E Main exchanger (condenser/evaporator).R Secondary exchanger (recovery).V Lamination valve.


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TXAEY 117133 operating logic

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Operating logic

The following tables provide examples ofautomatic operation of the polyvalent system invarious operating modes based on the requestsfrom the user.

The first table shows the operating statusand the production of hot and chilled waterconsidering the single requests.

The subsequent tables show the operatingstatus and the production of hot water in themain and secondary exchangers on the basis ofrequests and the priority assigned to theexchangers

TXAEY operating inAUTOMATICmode

Request for ho t water at t he secondar y exchanger (recov er y)

0 % 100 %

Requestforchilledwater (*) Status Operation Status Operatio n

0 % OFF - ON Recovery only (A3)

100 % ON Cooling (A1) ON Cooling + recovery (A2)

(A1) =AUTOMATIC 1 (A2) =AUTOMATIC 2 (A3) =AUTOMATIC 3

TXAEY wor king in SELECTmode with p riorit y to the secondary exch anger (recover y)


0 % 100 %Requestfor hotwater (**)

Status Operation Status Operatio n

0 % OFF - ON Recovery only (S2)

100 % ON Heating only (S1) ON Recovery only (S2)

(S1) =SELECT 1 (S2) =SELECT 2

TXAEY wor king in SELECTmode with prior it y to th e main exchang er (condenser/evaporator)


0 % 100 %Requestfor hotwater (**)

Status Operation Status Operatio n

0 % OFF - ON Recovery only (S2)

100 % ON Heating only (S1) ON Heating only (S1)

(S1) =SELECT 1 (S2) =SELECT 2

(*) Request for chilled water at the main exchanger (evaporator).

(**) Request for hot water at the main exchanger (condenser/evaporator).

The competitive advantages of the

polyvalent sys tem

The polyvalent system was patented byRHOSSS.p.A. to provide for the request forhot and cold water, simultaneously orindependently, with a single unit. This optimizesenergy consumption and makes managementeasier.

The polyvalent system is a valid alternativeto traditional s ystems that require the use of achiller or heat pump, with use or addition of aboiler. The advantages derive from the use of asingle unit, energy savings due to high COPs,and the lack of use of combustible products, sothat it can be defined as an ecologicalpolyvalent machine.

The system is a versatile fourth-generationpolyvalent heat pump. As opposed to otherpolyvalent units, it meets the typical demands of2-pipe and 4-pipe systems with a single unitand in a most flexible manner, so that it caneven be used in existing systems with nomodifications required. This polyvalent unit takes it place on themarket as a unit that ensures essential aspects

such as EFFICIENCY , RELIABILITY ANDVERSATILITY.


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TXAEY 117133 applications

24

Applic ati ons of the poly valent

system

The polyvalent ecological system was designedbyRHOSS S.p.A. to provide year-round supplyof hot and cold water to 2-pipe or 4-pipesystems, either simultaneously orindependently, depending on the selectedoperating mode,AUTOMATICor SELECT.

2-pipe-systems

Air conditioning and the production of hotwater in a 2-pipe system is a typical applicationin hotels, hospitals, gyms and hospitalitystructures in general. When inAUTOMATICmode, it is used inthe summer months for cooling and theproduction of hot water. When in SELECTmode, it is used inbetween seasons or in winter for heating or theproduction of hot water on the basis of thepriority assigned.

Summer monthsAUTOMATIC

W ater for domesticuse

Air condit ioning

Hot water Chilled water

W inter months SELECT

W ater for domestic use or air

conditioningHot water

4-pipe systems

Increasingl y frequently, modern HVACinstallations require the simultaneousproduction of hot and chilled water. This canoccur more often because of: the development of new types of thermalinsulation for buildings; increase of internal loads (CED, WEB,); lighting systems; the presence of large windows; the growing importance attributed to air

quality, which requires the use of conditioningsystems year-round.In these kinds of application, it can be used in

AUTOMATICmode throughout the year,catering to simultaneous or s eparate hot andchilled water demands in a completelyautomatic way.

"AUTOMATIC" modefo r the ent ire year

W inter

Heating

Summer

Cooling

Air condit ioning Air condi tion ingHot water Chilled water

Spring/AutumnCooling and heating

Air condit ioning 1 Air condit ioning 2Hot water Chilled water

Exampl e of water cir cui t

With external boiler (recovery)

T

7.08

7.09

Standard connection: the recovery pump (installed by the installer) ison at all times. Recovery is activated on the basisof the temperature of return water to the boiler.

7.08

T

7.09

Suggested connection:

the recovery and the recovery pump (installed bythe installer) are activated by the thermostatinstalled on the boiler.

N.B.:The maximum temperature to which the thermostat can be set, andhence the set-point of the machine, must be set on the basis of theoperating limits.

Att ent ion:Units equipped with a recovery unit or desuperheater must be operatedin compliance with the provisions in Italian Ministerial Decree 01/12/04No.309. This law is only valid in the Italian Republic. For installation inother countries, refer to current local legislation.

Att ent ion:

Hot water for domestic use can be produced only by using an additionalheat exchanger which is suited to this purpose. Refer to current locallaws and regulations.


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TCAEY-THAEY 115233 electronic controls

25

Elec tronic controls for TCAEY THAEY 115233

models

STANDARD controlThe keyboard with display makes it possible to view the workingtemperature and all the unit process variables, as well as providingaccess to setting parameters for operating set points and theirmodification. For purposes of technical assistance, it allows password-protected access to the unit's management parameters (access forauthorised personnel only).

set

1 2mode

MODE UP keyMakes it possible to select the unit operatingmode (stand-by, summer or winter cycle). It isalso used for altering parameters upwards.

ON/OFF RESET DOWN keyMakes it possible to switch any unit alarms on oroff and reset them. It is also used for alteringparameters downwards.

DISPLAYDisplays the values of all the parameters (i.e.outlet water temperature, etc.), codes of anyalarms and status of resources.

W INTER LED

Indicates that the unit is running in heatingmode.

SUMMER LEDindicates that the unit is running in coolingmode.

COMPRESSOR L EDIndicates that the compressor is running or is intime-delay mode.

DEFROSTING LEDInactive.

Plate h eat exch anger h eater L EDIndicates the activation of the electric heater

POWER SUPPLY LEDIndicates that the unit is connected to the powersupply.

KTR1 - Remote keypad forSTANDARD controlThe remote keypad with display (KTR1) enables remote control and thedisplay of all the unit's digital and analogue process variables. It

therefore possible to control all the machine functions directly in theroom.

ON/OFFRESET

MODE

Line

UP key

Makes it possible to alter parameters upwards.

DOWN keyMakes it possible to alter parametersdownwards.

MODE

MODE key

Makes it possible to select the unit operatingmode (stand-by, summer or winter cycle).

ON/OFFRESET

ON/OFF RESET keyMakes it possible to switch any unit alarms on oroff and reset them.

DISPLAYDisplays the values of all the parameters (i.e.outlet water temperature, etc.), codes of anyalarms and status of resources.

W INTER LED

Indicates that the unit is running in heatingmode.

SUMMER LEDindicates that the unit is running in coolingmode.

COMPRESSOR LEDIndicates that the compressor is running or is intime-delay mode.

DEFROSTING LEDInactive.

Plate h eat exch anger h eater L EDIndicates the activation of the electric heater

POWER SUPPLY LEDIndicates that the unit is connected to the powersupply.


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TCAEY-THAEY 115233 electronic controls

26

Compatible control

The keyboard with display makes it possible to view the workingtemperature and all the unit process variables, as well as providingaccess to setting parameters for operating set points and theirmodification. For purposes of technical assistance, it allows password-protected access to the unit's management parameters (access for

authorised personnel only).

ALARM

MODE

ON/OFF

Prg

MODE

SUMMER LED - MODE, UP key:indicates that the unit is running in cooling mode. Thiskey makes it possible to select the unit operating mode(summer or winter cycle) and also allows the user torun up through the list of parameters, the valuesdisplayed and any alarm codes.

ON/OFF

W INTER LED - ON/OFF, DOW N key:Indicates that the unit is running in heating mode. This

key makes it possible to switch the unit on and off andalso allows the user to run down through the list ofparameters, the values displayed and any alarmcodes.

ALARM

Prg

ALARM LED Prg , ALARM k eyWhen on, it indicates the presence of at least onealarm situation in the machine. This key makes itpossible to programme the machine, display the alarmcodes and reset the same.

Display

Display all the parameters (i.e. outlet watertemperature, etc.), codes of any alarms and status ofresources.

POWER SUPPLY LEDIndicates the presence of the power supply when themachine is switched off. If the regulation temperature isdisplayed and flashing, it means that the requestedcompressor is stationary due to the safety time delays.

KTR Remote keypad for compatiblecontrol

The remote keyboard with display (KTR) allows the remote control anddisplay of all the unit's digital and analogue process variables. Ittherefore possible to control all the machine functions directly in theroom. It allows setting and management of time periods (if KSCaccessory is included).

ALARM

!

Prg MODE

ON

OFF

DISPLAY: displays the numbers and values of all theparameters (e.g. outlet water temperatureetc.), the codes of any alarms and the statusof all the resources using strings.

ALARM

!

ALARM key:makes it possible to display of the code andreset any alarms.

Prg

PRG key: makes it possible to programme themachine's operating parameters.

ON

OFF

ON/OFF key: makes it possible to switch the unit on andoff.

UP key:used to scroll through the list of parameters,statuses and any alarms; makes it possibleto modify set points.

MODE

MODE - ENTER key:makes it possible to switch from chiller toheat pump operation and vice versa.DOWN key:used to scroll through the list of parameters,statuses and any alarms; makes it possibleto modify set points.

Note:The temporary presence of two devices, on-board machine keyboardand remote keyboard, will cause the on-board machine terminal to bedisabled. Three dashes (- - -) will be displayed on the interface on themachine, indicating the presence of the remote keypad (KTR).


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TXAEY 117133 electronic control

27

Elec tronic controls for TXAEY 117133 models

Electronic control

The keyboard with display makes it possible to view the workingtemperature and all the unit process variables, as well as providingaccess to setting parameters for operating set points and theirmodification. For purposes of technical assistance, it allows password-

protected access to the unit's management parameters (access forauthorised personnel only).

ALARM

!

Prg MODE

ON

OFF


ALARM

!

ALARM key:makes it possible to display of the code and

reset any alarms.

Prg


ON

OFF


UP key: used to scroll through the list of parameters,statuses and any alarms; makes it possibleto modify set points.

MODE

MODE - ENTER key:makes it possible to switch from chiller toheat pump operation and vice versa.DOWN key: used to scroll through the list of parameters,statuses and any alarms; makes it possibleto modify set points.

KTR Remote keyboard

The remote keyboard with display (KTR) allows the remote control anddisplay of all the unit's digital and analogue process variables. Ittherefore possible to control all the machine functions directly in theroom. It allows setting and management of time periods (if KSC

accessory is included).

ALARM

!

Prg MODE

ON

OFF


ALARM

!

ALARM key:makes it possible to display of the code and

reset any alarms.

Prg


ON

OFF


UP key: used to scroll through the list of parameters,statuses and any alarms; makes it possibleto modify set points.

MODE

MODE - ENTER key:makes it possible to switch from chiller toheat pump operation and vice versa.DOWN key: used to scroll through the list of parameters,statuses and any alarms; makes it possibleto modify set points.

Note:The temporary presence of two devices, on-board machine keyboardand remote keyboard, will cause the on-board machine terminal to bedisabled.


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TCAEY-THAEY-TXAEY 115233 serial connection

28

Serial connection

Seri al conn ection forSTANDARDcontrol Supervision

All units are equipped with electronic control that can interfacewith an external system via a serial communication line by meansof the KIS s erial interface accessory (proprietary protocol orModBus

RTU) and the KCH converter.

In general, a supervision system allows access to all unit functions,such as: making all settings which are accessible through the keyboard; reading all process variables of the inputs and outputs, whetherdigital or analogue; reading the various alarm codes which are present, and resetting

them as necessary; reading all programming parameters and varying some of them.

KIS KIS KIS

KCH

Serial connection for compatiblecontrol Supervision

All units are equipped with electronic control that is set up interfacewith an external BMS via a serial communication line by means ofthe KRS485 serial interface accessory (proprietary protocol orModBus

RTU) and the following converters.

KRS232 RS485/RS232 converter for connection to supervisionsystems; KUSB RS485/USB converter for connection to supervisionsystems;

The FTT10 LonWorks

compatible interface is also available.

In general, a supervision system allows access to all unit functions,such as: making all settings which are accessible through the keyboard; reading all process variables of the inputs and outputs, whetherdigital or analogue; reading the various alarm codes which are present, and resetting

them as necessary.

KRS485 KRS485 KRS485

KRS232KUSB

KSC Clock card Exampl e of disp lay

Insertion of the clock card (KSC) favours flexible and efficient useof the unit, showing the date/time and allowing management ofthe machine in daily or weekly start/stop time periods, with thepossibility to change set-points. T he time periods can be set andmanaged from the keyboard.

ALARM

!

Prg MODE

ONOFF

Maximum 200 units.Maximum distance 1,000 m.

Maximum 200 units.

Maximum distance 1,000 m.


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TCAEY-THAEY 115233 performances

29

Performance

Choice of a chiller or heat pump anduse of the performance tables

For each model, table D provides thecooling capacity (QF), and the total absorbedelectric power (P), on the basis of theevaporator outlet water temperature withconstant temperature differencesT= 5C: thevalue ofQT is the value of the heating capacity

available to the user in winter mode. Within operating limits, the values in tableD may permit interpolations of performancebut extrapolations are not permitted. Table H shows the values of correctivecoefficients to be applied to the nominal valuesif water with gl ycol is used. Graph 1shows the pressure drop valuesof the heat exchangers (with respect to theindicated temperature differences). Graph 2 indicates the useful staticpressure of the pump (if present).

Example:

Design conditions for a water-cooled chiller

with installation P1: Requested cooling capacity = 29.2 kW; Temperature of water produced atevaporator = 13C; Temperature differential Tat theevaporator = 5C; Inlet air temperature at condenser = 30C.

Using the values indicated in table D, andsupposing a temperature differential ofT=5Cat the condenser, it can be seen that model 109meets the requirement with:QF=29.2 kW; P=7.9 kW;

The water flow rates G to be sent to theexchangers are obtained using the following

formulae:G (l/h) evaporator =(QFx860)T=(29.2x860)5=5022.4 (l/h);

Graph 1 shows the pressure drop values pwof the evaporator.pwevaporator = 60 kPa;Graph 2 shows the residual static pressurevaluespr available on the machine outlet 85kPa.


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TCAEY-THAEY 115233 performances

catalog chillere

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