BlueBox Omega Sky Xi Technical Manual

253/953 kw water-condensed liquid chillers and heat pumps

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Omega Sky Xi

253÷953 kW

General

Water-condensed liquid chillers and heat pumps

for indoor applications; screw compressor with

variable compression ratio and inverter for

capacity modulation.

Configurations

OH: non-reversible heat pump

HPW: reversible heat pump on water side

/LN: low noise version

/XLN: super low noise version

/DC: with total recovery

Strengths

►

Max. efficiency at partial loads: SEER up to

8,3 and SEPR up to 9,3

Ecodesign Tier 2 compliant

►

Non-flammable refrigerant R513A, with

GWP=573

►

Hybrid Falling Film evaporator with low refrig-

erant load

Variable Vi screw compressor with external

►

inverter

►

Version with chiller and heat pump, each with

optimised operating range

►

BlueThink advanced control with integrated

web server. Multilogic function and Blueye

supervision system. (options)

Table of Contents

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Summary of Contents for BlueBox Omega Sky Xi

Page 1 Omega Sky Xi 253÷953 kW General Strengths Water-condensed liquid chillers and heat pumps ► Max. efficiency at partial loads: SEER up to for indoor applications; screw compressor with 8,3 and SEPR up to 9,3 variable compression ratio and inverter for Ecodesign Tier 2 compliant ►...
Page 2: Table Of Contents
Technical specifications Ecodesign Electrical specifications Electrical specifications Flow rate ranges of heat exchangers Operating limits Omega Sky Xi - Omega Sky Xi OH - Omega Sky Xi HPW Noise levels Noise levels Dimensional diagrams Installation advice Water characteristics Glycol mixtures...
Page 4: Omega Sky Xi
OMEGA SKY XI Omega Sky Xi is a water-condensed liquid chiller for in- In addition to managing capacity modulation, BlueThink door applications, available in heat pump version also. also controls all safety devices so that the compressor can operate within its operating limits at all times and simulta- This range features a semi-hermetic, inverter-controlled neously safeguard its operation and reliability.
Page 5 ELECTRICAL CONTROL PANEL The heat exchanger consists of a steel shell insulated with closed-cell foam material, while the tube bundle is made The electrical control panel is made in a painted galva- with copper tubes. The heads can be removed for tube nised sheet-iron box with forced ventilation and IP21 pro- inspection and cleaning.
Page 6 CERTIFICATIONS AND REFERENCE Main functions of the webserver As standard, the Bluethink controller integrates a web STANDARDS server with preloaded web page, which is accessed via The manufacturer has implemented and keeps the Man- password and user management on several levels. agement Systems listed below and it is certified against The web page allows the following functions to be car- them:...
Page 7 VERSIONS Alongside the basic version of the unit, there are the fol- lowing versions OH: non-reversible heat pump This is a heat pump for heating only. Compared to the ba- sic version, both user-side and source-side heat exchang- ers are insulated. HPW: reversible heat pump on water side.
Page 8: Description Of Accessories
DESCRIPTION OF ACCESSORIES Some accessories may be incompatible with each other even if not expressly indicated. Refrigerant R134 R134a Unit supplied with refrigerant R134a instead of R513A. Refrigerant circuit accessories Condensation control with 2-way modulating valve The accessory includes the supply of a 2-way modulating valve complete with servo control to be installed on the source-side hydraulic circuit (installation by the customer).
Page 9: Hydraulic Circuit Accessories
Brine Kit This accessory is compulsory if a water temperature set point lower than or equal to +3°C is used (if the unit is provided with double set point or variable set point, the lower set point is considered). The accessory consists of increased insulation and suitable sizing and calibration of some components. The inlet and outlet temperatures of the user-side exchanger must be given on ordering to allow correct set- ting of the alarm parameters and verification of the sizing of the expansion valve.
Page 10 Flowzer VFPP has the advantage of: • implementing an innovative design, which is alternative to the classic system based on fixed flow-rate pri- mary circuit plus secondary circuit • being ideal for new or entirely redesigned systems, especially for comfort applications •...
Page 11 The components above and the pump inverter must be selected at the time of the pre-sale agreements, de- pending on the features of the system. This has an impact on the quotation of the option and on the supply terms of the concerned components. In particular, the unit includes an additional control system, equipped with an advanced algorithm, which in- teracts with the main advanced Bluethink controller.
Page 12: Electrical Accessories
Electrical accessories LIID Limitation of the current absorbed by digital input When this accessory is requested, a digital input is prepared in the terminal board to activate the forced ca- pacity reduction of the unit to a set fixed level. This accessory is useful when there is a need to necessarily limit the power absorbed by the unit as regards particular conditions.
Page 13 SETV Variable set point with remote signal The accessory allows the set point to be varied continuously between two preset values, a maximum and a minimum, depending on an external signal that can be of the 0-1V, 0-10V or 4-20mA type. The set point temperatures and the type of signal to use for the adjustment must be specified when ordering.
Page 14 R1PR Relay for management of 1 external heat recovery-side pump This accessory can be requested for units without heat recovery pumps (for DC units) and allows a pump out- side the machine to be controlled. R2PR Relay for management of 2 external heat recovery-side pumps This accessory can be requested for units without heat recovery pumps (for DC units) and allows two pumps outside the machine to be controlled with a running/stand-by logic by implementing a rotation on the hours of operation.
Page 15: Network Accessories
Network accessories BEET Blueye® via Ethernet Blueye® is a supervision platform that enables remote monitoring of one or more units in the same system interconnected through a network with Modbus protocol. This accessory features the Blueye device, as already installed and wired in the unit. The critical variables to be monitored over time are identified for each connected device.
Page 16 BACnet protocol over IP (Ethernet) The controller is set for use, in read and write mode, of the BACnet port on IP protocol. By default, the programming gives read-only access to the control of the unit. Enabling of read/write access should be requested when ordering.
Page 17 Multilogic Function The Multilogic function allows management of up to 32 units equipped with advanced Bluethink controller and connected in hydraulic parallel with each other. On the basis of the information recorded by the temperature probes installed on the delivery and return man- ifolds of the system, with the master unit, a capacity request is generated that is distributed among the units connected in the Multilogic network according to settable priority and optimization logics.
Page 18: Other Accessories
Other accessories Rubber anti-vibration mounts These allow you to reduce the vibrations transmitted from the unit to the surface it is standing on. Accessory supplied loose. Spring anti-vibration mounts These allow you to reduce the vibrations transmitted from the unit to the surface it is standing on. Accessory supplied loose.
Page 19 SLCO Skid for shipping in container The accessory provides for the installation of a wooden sled for loading and a fixing system inside the container by a strap. If this accessory is requested, loading is only possible on containers and must be carried out at the factory.
Page 20: Technical Specifications
TECHNICAL SPECIFICATIONS OMEGA SKY Xi 25.1 29.1 35.1 40.1 47.1 53.1 60.1 72.1 81.1 97.1 R513A Cooling Refrigeration capacity Total absorbed power 4,88 5,06 5,09 5,11 5,16 5,22 5,24 5,32 5,34 Eurovent efficiency class ESEER 7,04 7,24 7,41 7,51 7,69...
Page 21 OMEGA SKY Xi HPW (R513A) 25.1 29.1 35.1 40.1 47.1 53.1 60.1 72.1 81.1 Cooling Refrigeration capacity Total absorbed power 4,88 5,06 5,09 5,11 5,16 5,22 5,24 5,32 5,34 Eurovent efficiency class ESEER 7,04 7,24 7,41 7,51 7,69 7,71 7,66...
Page 22 OMEGA SKY Xi HPW (R134a) 25.1 29.1 35.1 40.1 47.1 53.1 60.1 72.1 81.1 Cooling Refrigeration capacity Total absorbed power 5,02 5,22 5,25 5,29 5,35 5,33 5,37 5,48 ISEER 7,03 7,29 7,37 7,47 7,45 7,63 IPLV 8,85 9,18 9,18 9,27...
Page 23 OMEGA SKY Xi OH 25.1 29.1 35.1 40.1 47.1 53.1 60.1 72.1 81.1 R513A Heating capacity Total absorbed power 4,27 4,39 4,41 4,43 4,47 4,54 4,55 4,62 4,63 Eurovent efficiency class User-side heat exchanger Quantity n° Water flow rate m³/h...
Page 24 ECODESIGN INTRODUCTION The Ecodesign/ErP Directive (2009/125/EC) lays down new standards for more efficient energy use. The Directive contains various regulations; as regards chiller products and heat pumps, the regulations of interest are the following: • Regulation 2013/813, for small heat pumps (Pdesign ≤ 400 kW) •...
Page 25 The minimum efficiency requirements set by the regulations are indicated below. REGULATION 2016/2281, comfort application REGULATION 2016/2281, process application REGULATION 2013/813 The conformity of the product must be checked according to the type of application, whether comfort or process, and at the required outlet water temperature.
Page 26 The two schematic tables below, respectively for comfort application and for process application, indicate the reference of the required conformity according to the type of product and the set point temperature (reference to regulations 2016/2281 and 2013/813). Important note: for mixed comfort and process applications, the reference application for conformity is the comfort application.
Page 27 As regards the 2016/2281 regulation starting from 1 January 2021, the minimum required efficiency limit will be raised (Tier 2) compared to the current standard (Tier 1). With reference to the Omega Sky Xi range, below is a list of concerned regulations relating to the different units in their various configurations: Omega Sky Xi: •...
Page 28 (1) User-side heat exchanger water inlet/outlet temperature 12/7°C (low temperature application), with reference to regulation 2016/2281 and stand- ard EN 14825. (3) User-side heat exchanger water inlet/outlet temperature 12/7°C, with reference to regulation 2016/2281 and norm EN 14825. OMEGA SKY Xi HPW 40.1 47.1 53.1...
Page 29 OMEGA SKY Xi HPW 25.1 29.1 35.1 R513A REGULATION 2013/813 Pdesign Compliance ηsh 165% 169% 172% SCOP 4,32 4,44 4,49 Compliance Tier 2 (2021) R134a Pdesign Compliance ηsh 168% 173% 175% SCOP 4,52 4,58 Compliance Tier 2 (2021) Y = unit in compliance with Ecodesign at the indicated condition.
Page 30 ELECTRICAL SPECIFICATIONS OMEGA SKY Xi 25.1 29.1 35.1 40.1 47.1 General electrical specifications Max. absorbed power (FLI) Max. absorbed current (FLA) Rated current (Inom) cosφ standard unit 0,97 0,97 0,97 0,97 0,97 Max. inrush current (MIC) < 10 < 10 <...
Page 31 ELECTRICAL SPECIFICATIONS OMEGA SKY Xi - HPW & OH 25.1 29.1 35.1 40.1 47.1 General electrical specifications Max. absorbed power (FLI) Max. absorbed current (FLA) Rated current (Inom) cosφ standard unit 0,97 0,97 0,97 0,97 0,97 Max. inrush current (MIC) <...
Page 32 35.1 35.1 40.1 40.1 47.1 47.1 53.1 53.1 60.1 60.1 72.1 72.1 81.1 81.1 97.1 97.1 OMEGA SKY Xi HPW R513A OMEGA SKY Xi HPW R134a Evaporator Condenser Evaporator Condenser Qmin Qmax Qmin Qmax Qmin Qmax Qmin Qmax m³/h m³/h m³/h...
Page 33 OPERATING LIMITS Omega Sky Xi - Omega Sky Xi OH - Omega Sky Xi HPW COOLING HEATING TOTAL RECOVERY LWTs: water outlet temperature from the source-side heat exchanger LWTu: water outlet temperature from the user-side heat exchanger LWTr: water outlet temperature from the recovery exchanger For LWTu lower or equal to +3°C, it is mandatory to fit the "Brine Kit"...
Page 34 8000 Hz Lw_tot Lp_tot 25.1 29.1 35.1 40.1 47.1 53.1 60.1 72.1 81.1 97.1 OMEGA SKY Xi /LN Octave bands [dB] Total [dB(A)] 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz Lw_tot Lp_tot 25.1...
Page 35 NOISE LEVELS OMEGA SKY Xi /XLN Octave bands [dB] Total [dB(A)] 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz Lw_tot Lp_tot 25.1 29.1 35.1 40.1 47.1 53.1 60.1 72.1 81.1 97.1 The acoustic data are related to standard conditions (source on a reflective surface in free field) in referable and reproducible oper- ating conditions.
Page 36 DIMENSIONAL DIAGRAMS OMEGA SKY XI - XI OH - XI HPW DDIM000472 Note: These drawings are not contractually binding. For the installation design, refer to the specific dimensional drawing available on request.
Page 37 INSTALLATION ADVICE The units described in this document are, by nature, strongly affected by the characteristics of the system, the working conditions and the installation site. Remember that the unit must be installed by a qualified and skilled technician, and in compliance with the national leg- islation in force in the destination country.
Page 38 Minimum water content in the system For correct operation of the unit, it is necessary to ensure a buffering on the system such as to comply with the minimum operating time considering the greater between the minimum OFF time and the minimum ON time. In short, these con- tribute to limiting the number of times the compressors are switched on per hour and to preventing undesired deviations from the set point of the delivered water temperature.
Page 39 Installation site To determine the best installation site for the unit and its orientation, you should pay attention to the following points: • compliance with the clearance spaces indicated in the official dimensional drawing of the unit must be guaranteed so as to ensure accessibility for routine and non-routine maintenance operations •...

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