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Western Zeta Rev HE FC Application And Operating Principle

46-149 kw
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Zeta Rev HE FC
46÷149 kW
General
High efficiency, air-condensed free cooling water
chiller unit, with scroll compressors and plate
heat exchanger.
Configurations
LN: low noise unit
NG: unit without glycol on user circuit
western.nl
Strengths
Patented free cooling system
►
Reduced refrigerant charge
►
Advanced Bluethink controller with integrated
►
web server
Multilogic/Multifree functionality for multi-unit
►
systems
►
Blueye supervision system
Flowzer: system with variable water flow rate
►
►
Glycol-free version available

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Summary of Contents for Western Zeta Rev HE FC

  • Page 1 Zeta Rev HE FC 46÷149 kW General Strengths High efficiency, air-condensed free cooling water Patented free cooling system ► chiller unit, with scroll compressors and plate Reduced refrigerant charge ► heat exchanger. Advanced Bluethink controller with integrated ► Configurations web server...

  • Page 3: Table Of Contents

    Application and operating principle Zeta Rev HE FC Product description Description of accessories Refrigerant circuit accessories Fan accessories Hydraulic circuit accessories Electrical accessories Other accessories Technical specifications Zeta Rev HE FC Zeta Rev HE FC/NG Electrical specifications Pump data User-side exchanger flow rate fields...

  • Page 5: Application And Operating Principle

    Since the water is "pre-cooled", the amount of capacity required of the chiller section will ZETA REV HE FC be lower and therefore this will be able to operate with Chiller only mode reduced capacity.
  • Page 6 ZETA REV HE FC/NG The water leaving the decoupling exchanger will be the water that enters the evaporator. Since the water is "pre- Chiller only mode cooled", the amount of capacity required of the chiller sec- When the ambient temperature is higher than the tem-...

  • Page 7: Zeta Rev He Fc

    Zeta Rev HE FC FREE COOLING COIL High efficiency, air-condensed free cooling water chiller unit, with scroll compressors and plate heat The free cooling exchanger consists of a row coil with cop- per tubes and aluminium fins. exchanger. Refer to chapters "Installation advice" and "Description of PRODUCT DESCRIPTION accessories"...
  • Page 8 USER-SIDE HEAT EXCHANGER CONTROL BLUETHINK The exchanger is a braze-welded stainless steel plate heat Main controller functions exchanger, insulated with a shroud of closed-cell insulat- The microprocessor control allows the following functions: ing material. • water temperature adjustment, with outgoing water The exchanger is equipped with two temperature probes control (one at the inlet and one at the outlet) for controlling the...
  • Page 9 The unit is wrapped in a protective transparent polyethyl- ene stretch film. VERSIONS Zeta Rev HE FC/NG In addition to the components of the basic version, the / NG set-up unit has: • a water/water decoupling plate heat exchanger in place of the 3-way valve •...

  • Page 10: Description Of Accessories Refrigerant Circuit Accessories

    DESCRIPTION OF ACCESSORIES Refrigerant circuit accessories The "(S)" symbol indicates that the option is present as standard in the unit, provided this is not in conflict with other selected accessories. Brine Kit This accessory is compulsory if a water temperature set point lower than +3°C is used (if the unit is provided with double set point or variable set point, the lower set point is considered).

  • Page 11: Fan Accessories

    Fan accessories EC fans With this accessory, EC fans, with electronically commutated brushless motor, are used for the ventilating section. These guarantee very high efficiency levels for all working conditions and allow a 15% saving on the power absorbed by each fan working at full capacity. Also, through a 0-10V analogue signal sent to each fan, the microprocessor carries out condensation/evapo- ration control by continuous adjustment of the air flow rate as the external air temperature changes, with a further reduction in electrical absorption and noise emission.

  • Page 12: Hydraulic Circuit Accessories

    Hydraulic circuit accessories The "(S)" symbol indicates that the option is present as standard in the unit, provided this is not in conflict with other selected accessories. CORM Connection for manual filling This accessory allows the system filling procedure to be carried out directly from the unit: on the fan holder cover, there is a 1’’...
  • Page 13 FLOWZER VD - Transducer for automatic adjustment Flowzer VD requires a pressure transducer to be installed in the machine. Through this transducer, the inverter can gauge the actual pressure at the ends of the system and automatically adapt the pump speed to obtain a set available discharge head value.

  • Page 14: Electrical Accessories

    Electrical accessories The "(S)" symbol indicates that the option is present as standard in the unit, provided this is not in conflict with other selected accessories. Double power supply with automatic switching A motor-driven automatic switch to which to connect two separate power supply lines (for example, one from the mains power line and one from the uninterruptible power supply unit) is installed in the electrical control panel of the unit.
  • Page 15 The connection between the master unit and the slave units made with a CAT cable. 5E/UTP (prepared by the customer) with RJ45 connectors. Maximum cable length 100m. When other free cooling units are present, besides the master, in the same network of machines, it is possible to activate the Multifree function: this function allows the master to activate the free cooling sections of all the units in the network, even those whose compressors are off.
  • Page 16 SOFT Electronic soft-starter The scroll compressors have DOL (Direct On Line) starting and therefore the maximum inrush current I will be 4/5 times its nominal current I If the unit is equipped with the electronic soft-starter accessory, the starting of each compressor is done with an acceleration ramp that allows the effective value (rms value) of the inrush current of the individual com- pressor to be lowered.

  • Page 17: 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. ANTC Coil treated with anti-corrosion paints The treatment is applied exclusively to finned pack coils with copper tubes and aluminium fins and consists of aluminium passivation and coating with a polyurethane base;...
  • Page 18 Particular attention must be given to cases where an environment that is not particularly aggressive becomes aggressive as a consequence of a local and/or temporal concomitant cause such as, for example, due to the presence of a heating flue outlet or an industrial kitchen or a solvent extraction fan in a small craft business. Protective treatment of the exchanger is strongly recommended if at least one of the points below is verified: •...
  • Page 19 PREA Unit suitable to be disassembled on site The unit is delivered so that it can be disassembled easily on site if this makes the installation operations easier. A unit requested with this option is supplied: • screwed instead of riveted •...

  • Page 20: Technical Specifications

    TECHNICAL SPECIFICATIONS ZETA REV HE FC 10.2 12.2 13.2 Cooling (A30°C; EG30% 15/10°C) Refrigeration capacity 46,3 53,0 62,8 67,5 77,2 92,2 106,4 119,7 137,4 149,0 Total absorbed power 13,3 15,9 19,3 19,3 23,0 25,2 29,8 34,1 39,4 45,2 3,48 3,32...
  • Page 21 ZETA REV HE FC/NG 10.2 12.2 13.2 Cooling (A30°C; W 15/10°C) Refrigeration capacity 47,4 54,3 64,3 69,1 78,8 94,4 108,9 122,4 140,4 151,9 Total absorbed power 13,4 16,0 19,3 19,5 23,3 25,4 29,9 34,5 39,9 45,9 3,55 3,39 3,33 3,55...

  • Page 22: Zeta Rev He Fc Zeta Rev He Fc/Ng

    ELECTRICAL SPECIFICATIONS ZETA REV HE FC - ZETA REV HE FC/NG General electrical specifications Max. absorbed power (FLI) Max. absorbed current (FLA) Nominal current (Inom) cosφ standard unit 0,80 0,80 0,80 0,82 0,81 Nominal current with power factor correction (Inom) cosφ...

  • Page 23: Pump Data

    PUMP DATA Model Rated power Rated current Qmin Qmax m³/h m³/h...

  • Page 24: User-Side Exchanger Flow Rate Fields

    If the design conditions require a water flow rate that does not come within the allowed operating range, you must contact our sales department that will identify the most suitable solution for the specific application. ZETA REV HE FC Qmin Qmax m³/h...

  • Page 25: Operating Limits

    OPERATING LIMITS COOLING FC only -20 -15 -10 -5 10 15 20 25 30 35 40 45 50 Ta [°C] external air temperature LWTu: water outlet temperature from the user-side heat exchanger in the indicated area, the control could actuate a forced capacity reduction of the compressors so as to prevent tripping of the safety devices FC only: in the area indicated by the arrow, the switching on of the compressors is disabled and therefore the unit can work only in free cooling mode...

  • Page 26: Noise Levels

    250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz 10.2 12.2 13.2 ZETA REV HE FC /LN - ZETA REV HE FC/NG /LN Octave bands [dB] Total [dB(A)] 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz...

  • Page 28: Installation Advice

    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 29: Minimum Water Content In The System

    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 min- imum operating time considering the greater between the minimum OFF time and the minimum ON time. In short, these contribute 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 30: Installation Site

    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 •...

  • Page 31: Installations That Require The Use Of Treated Coils

    Installations that require the use of treated coils If the unit has to be installed in an environment with a particularly aggressive atmosphere, coils with special treatments are available as options. • e-coated microchannel coils • coils with anti-corrosion treatment (accessory available only for units with Cu/Al coil) A description of the individual accessories is available in the “Description of accessories”...

  • Page 32: Aeraulic Head Losses And Options Available For The Ventilating Section

    Aeraulic head losses and options available for the ventilating section With the exception of units for which oversize fans are required, as standard, the units are designed considering that, at the nominal air flow rate, the fans work with null available pressure. If there are obstacles to free air flow, you should consider the additional aeraulic head losses that will cause a reduction of the air flow rate and a consequent deterioration of performance.
  • Page 33 AC fans (Ø 800) EC fans (Ø 800) Oversize EC fans (Ø 800) The indicated values are for the standard machine, without accessories, with AC fans and in any case in the absence of air recirculation. Example: supposing you expect there to be obstacles that will generate an estimated aeraulic head loss of 60Pa. In this case, there are 3 possibilities: •...

  • Page 34: Dimensional Diagrams

    DIMENSIONAL DIAGRAMS ZETA REV HE FC 3.2-5.4 A4G879C 2611 VIEW FROM "B" VIEW FROM "A" 625,5 376,5 2883 A B C 1337 Uout 1500 1500 1337 1000 1000 2590 "A" "B" HYDRAULIC CONFIGURATIONS WITHOUT HYDRAULIC MODULE Uout (B)-(C) HYDRAULIC MODULE ST1P-ST2P G 1 1/4"F...
  • Page 35 ZETA REV HE FC 3.2-5.4 A4G879C 2590 1280 1280 IMPRONTA A TERRA/FOOTPRINT SCALA 1:30 MODEL WEIGHT(kg) OPERATING WEIGHT (kg) G1 (kg) G2 (kg) G3 (kg) G4 (kg) 3.2 LN 929 558 4.2 LN 924 556 5.2 LN 901 553 3.2 1P-2P_LN 982 556 4.2 1P-2P_LN...
  • Page 36 ZETA REV HE FC/NG 3.2-5.4 A4G925A VIEW FROM "B" 2587 167,5 167,5 VIEW FROM "A" Uout 1500 1500 1000 1000 1337 2590 "A" "B" HYDRAULIC CONFIGURATIONS WITHOUT HYDRAULIC MODULE Uout (B)-(C) G 1 1/4'' M G 2"F G 1 1/4"M...
  • Page 37 ZETA REV HE FC/NG 3.2-5.4 A4G925A 2590 1280 1280 IMPRONTA A TERRA/FOOTPRINT SCALA 1:30 PESO (kg) PESO IN FUNZIONE (kg) MODELLOMODEL WEIGHT(kg) OPERATING WEIGHT (kg) G1 (kg) G2 (kg) G3 (kg) G4 (kg) ZETA REV HE 3.2 FC-NG ZETA REV HE 4.2 FC-NG ZETA REV HE 5.2 FC-NG...
  • Page 38 ZETA REV HE FC (NG) 6.2-7.4 A4G878B VIEW FROM "A" VIEW FROM "B" Uout 3549 1500 1500 1337 1000 3268 1000 "A" "B" CORM G1" Uout G 2"F G 2"M Note: These drawings are not contractually binding. For the installation design, refer to the specific dimensional drawing...
  • Page 39 ZETA REV HE FC (NG) 6.2-7.4 A4G878B IMPRONTA A TERRA / FOOTPRINT 391,5 712,5 1049 3250 SCALA 1:30 MODEL WEIGHT(kg) OPERATING WEIGHT (kg) G1 (kg) G2 (kg) G3 (kg) G4 (kg) 6.2 LN 1026 1082 1309 537 7.2 LN 1038...
  • Page 40 ZETA REV HE FC (NG) 8.2-10.4 A4G863B VIEW FROM "A" 4405 VIEW FROM "B" Uout 4681 1000 1000 1500 1500 4354 1437 "A" "B" Uin 8.2-9.2 Uin 10.2 Uout G 2"F G 2 1/2"F G 2"M SAP CODE OF OPTIONS Note: These drawings are not contractually binding.
  • Page 41 ZETA REV HE FC (NG) 8.2-10.4 A4G863B IMPRONTA A TERRA / FOOTPRINT 1800 1254 4350 SCALA 1:30 MODEL WEIGHT(kg) OPERATING WEIGHT (kg) G1 (kg) G2 (kg) G3 (kg) G4 (kg) 8.2 LN 1368 1434 1727 576 9.2 LN 1379 1446 1718 578 10.2 LN...
  • Page 42 ZETA REV HE FC (NG) 12.2-13.4 A4G864B VISTA DA "A" VISTA DA "B" VIEW FROM "A" VIEW FROM "B" 4391 Uout 4681 1500 1500 1437 1000 1000 4354 "A" "B" Uout G 2"1/2F G 2"M SAP CODE OF OPTIONS Note: These drawings are not contractually binding. For the installation design, refer to the specific dimensional drawing...
  • Page 43 ZETA REV HE FC (NG) 12.2-13.4 A4G864B IMPRONTA A TERRA / FOOTPRINT 1800 1254 4350 SCALA 1:30 MODEL WEIGHT(kg) OPERATING WEIGHT (kg) G1 (kg) G2 (kg) G3 (kg) G4 (kg) 12.2 LN 1491 1560 1699 594 13.2 LN 1530 1600 1668 600 12.2 1P-2P_LN...
  • Page 44 T. +31 33 2477800...

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