Instruction Manual of AQUAFORCE PUREtec 30XW-PZE-30XWHPZE Water-Sourced Screw Heat Pumps

Instruction Manual of AQUAFORCE PUREtec 30XW-PZE-30XWHPZE 
Water-Sourced Screw Heat Pumps 

Nominal cooling capacity 269-1110 kW
Nominal heating capacity 319-1296 kW

The 30XW-PZE liquid chillers are the premium solution for industrial and commercial applications where installers, consultants and building owners require optimal performances and maximum quality.

The 30XW-PZE liquid chillers are designed to meet current and future requirements in terms of energy efficiency, flexibility of use and compactness. They use the most reliable technologies available today:

• Twin-rotor screw compressors with a variable capacity valve
• R-1234ze refrigerant or R-515B
• Flooded heat exchangers that are mechanically cleanable
• Carrier SmartVuTM control with color touch screen user interface that includes 10 langages

The AquaForce PUREtec range is splitted into two versions:

• 30XW-PZE for air conditioning and refrigeration applications
• 30XWHPZE for heating applications

As standard, the unit can provide an evaporator leaving temperature down to 3,3°C, and when operating as a heat pump, it can deliver up to 55°C (70°C optional) on the condenser side.

CUSTOMER BENEFITS

Low energy consumption

• 30XW-PZE range is compliant with EU Eco-design Minimum Efficiency Performance Standards (MEPS) in cooling that apply from January 2021
• SEER 12/7°C up to 7.6 and SEPR 12/7°C up to 9.3
• 30XWHPZE range is compliant with EU Eco-design Minimum Efficiency Performance Standards (MEPS) in heating that apply from September 2015
• COP of up to 6.7 and SCOP up to 7.2
• The high energy efficiency is reached through:
• Twin-rotor screw compressor equipped with a highefficiency motor and a variable capacity valve that permits exact matching of the cooling capacity to the load.
• Flooded multi-pipe heat exchangers for increased heat exchange efficiency.
• Electronic expansion device permitting operation at a lower condensing pressure and improved utilisation of the evaporator heat exchange surface.
• Economizer system with electronic expansion device for increased cooling capacity

Low operating sound levels

• Standard unit features include:
  – Silencers on the compressors discharge line.
  – Silencers on the economiser return line.
  – Acoustic insulation on the components that are most subjected to radiated noise.
  – Option 257 further reduces the global unit sound level.

Easy and fast installation

• Compact design
  – The 30XW units are designed to offer the most compact dimensions on the market.
  – With a width of approximately 1 m up to 1300 kW the units can pass through standard door openings and only require minimum floor space in the plant room.

Compact, accessible unit – side view – sizes up to 1300 KW

 

• Simplified electrical connections
  – Main disconnect switch with high trip capacity
  – Transformer to supply the integrated control circuit (400/24 V)
• Simplified hydraulic connections
  – Victaulic connections on the evaporator and condenser
  – Practical reference marks for entering and leaving water connections
  – Possibility to reverse the heat exchanger water inlet and outlet at the factory
  – Possibilty to modify the number of heat exchanger passes
• Fast commissioning
  – Systematic factory operation test before shipment
  – Quick-test function for step-by-step verification of the instruments, expansion devices and compressors.

Environmental care

 

• R-1234ze long-term refrigerant solution
  – HFO refrigerant with nearly zero global warming potential (GWP < 1) and zero ozone depletion potential (ODP = 0).
  – Not impacted by the HFC phase-down plan in Europe (79% HFC reduction in EU member states at 2030 horizon)
  – Compliant with refrigerant regulation in Switzerland that bans the use of HFC refrigerant in large capacity airconditioning equipment.
• Leak-tight refrigerant circuit
  – Reduction of leaks as no capillary tubes and flare connections are used
  – Verification of pressure transducers and temperature sensors without transferring refrigerant charge
  – Discharge line shut-off valve and liquid line service valve for simplified maintenance.

High reliability and easy servicing

• The 30XW units offer increased global performance as well as Carrier’s acclaimed product quality and reliability.
• Major components are selected and tested with R-1234ze and R-515B refrigerant to minimize failures possibility, as well as many design choices have been taken in this perspective.
• Non flammable use possible when selecting option 330,
  Low GWP A1 R-515 Refrigerant
• Screw compressors
  – Industrial-type screw compressors with oversized bearings and motor cooled by suction gas.
  – All compressor components are easily accessible on site minimising down-time.
• Refrigerant circuit
  Two independent refrigerant circuits (from 1000 kW upwards); the second one automatically takes over, if the first one develops a fault, maintaining partial cooling under all circumstances.
• Evaporator
  Electronic paddle-free flow switch. Auto-setting according to cooler size and fluid type.
• Auto-adaptive control
  – Control algorithm prevents excessive compressor cycling (Carrier patent)
  – Automatic compressor unloading in case of abnormally high condensing pressure.
• Exceptional endurance tests
  – Partnerships with specialised laboratories and use of limit simulation tools (finite element calculation) for the design of critical components.
  – Transport simulation test in the laboratory on a vibrating table and then on an endurance circuit (based on a military standard).

Safe Design

 

• Specific polyol ester oil qualified by Carrier for using with HFO-1234ze or R-515B to guarantee and maintain reliable bearing lubrication.
• Specific compressor gaskets compatible with HFO-1234ze or R-515B, tested and validated by Carrier.
• New relief valves designed for operation with HFO-1234ze or R-515B
• Specific electrical box with increased tightness and integrated blower that maintains positive air pressure to avoid any risk of ignition when using R-1234ze refrigerant.
• No need of ducted electrical cabinet fresh air supply when using option 330 – LOW GWP A1 R-515B refrigerant
• New control algorithms
• Specific documentation that contains all the installation, operation, maintenance and safety Instructions.

TECHNICAL INSIGHTS

SmartVuTM Control

 

• New innovative smart control features:
  – An intuitive and user-friendly, coloured, 7” interface
  – 10 languages available on choice: DE, EN, ES, FR, IT, NL, PT, TR, TU + one additional customer choice
  – Screen-shots with concise and clear information in local languages
  – Complete menu, customised for different users (end user, service personnel and Carrier-factory technicians
  – Setpoint offset based on the outside air temperature
  – Safe operation and unit setting: Password protection ensures that unauthorised people cannot modify any advanced parameters
  – Simple and “smart” intelligence uses data collection from the constant monitoring of all machine parameters to optimise unit operation
  – Night-mode: Cooling capacity management for reduced
  – Noise level.
  – With hydraulic module: Water pressure display and water fow rate calculation
• Energy management:
  – Internal time schedule clock controls chiller on/off times and operation at a second set-point
  – The DCT (Data Collection Tool) records the alarms history to simplify and facilitate service operations.
• Maintenance functions
  – F-Gas regulation leak check reminder alert
  – aintenance alert can be configured to days, months or hours of operation
• Advanced communication features
  – Easy and high-speed communication technology over Ethernet (IP) to a centralised building management system
  – Access to multiple unit parameters

Remote Management (Standard)

• Units with SmartVuTM control can be easily accessed from the internet, using a PC with an Ethernet connection. This makes remote control quick and easy and offers significant advantages for service operations.
• Aquaforce with Greenspeed® Intelligence is equipped with an RS485 serial port that offers multiple remote control, monitoring and diagnostic possibilities. When networked with other Carrier equipment through the CCN (Carrier Comfort Network – proprietary protocol), all components form a HVAC system fully-integrated and balanced through one of the Carrier’s network system products, like the Chiller System anager or the Plant System anager (optional)
• The 30XWZE/30XWPZE also communicates with other building management systems via optional communication gateways (BACnet, LON or JBus).
• The following commands/visualisations are possible from remote connection:
  – Start/Stop of the machine
  – Dual set-point management: Through a dedicated contact is possible to activate a second set-point (example, unoccupied mode)
  – Demand limit setting: To limit the maximum chiller capacity to a predefined value
  – Water pump control: These outputs control the contactors of one/two evaporator water pumps.
  – Water pumps changeover (only with hydraulic module options):
  These contacts are used to detect a water pump operation fault and automatically change over to the other pump.
  – Operation visualisation: ndication if the unit is operating or if it is in stand-by (no cooling load).
  – Alarm visualisation.

Remote management (EMM option)

– The Energy anagement odule (E offers extended remote control possibilities:
– Room temperature: Permits set-point reset based on the building indoor air temperature (if Carrier thermostats are installed)
– Set-point reset: Allows reset of the cooling set-point based on a 4-20 mA or 0-10 V signal
– Demand limit: Permits limitation of the maximum chiller capacity based on 0-10 V signal
– Demand limit 1 and 2: Closing of these contacts limits the maximum chiller capacity to two predefined values.
– User safety: This contact can be used for any customer safety loop; opening the contact generates a specific alarm.
– Ce storage end: When ice storage has finished, this input permits return to the second set-point (unoccupied mode).
– Time schedule override: Closing of this contact cancels the programmed time schedule.
– Out of service: This signal indicates that the chiller is completely out of service.
– Chiller capacity: This analogue output (0-10 gives an immediate indication of the chiller capacity.
– Alert indication: This volt-free contact indicates the necessity to carry out a maintenance operation or the presence of a minor fault.
– Compressors running status: Set of outputs (as many as the compressors number) indicating which compressors are running

06T screw compressor

 

The Carrier 06T screw compressor designed for operation with HFO-1234ze and R-515B refrigerant benefits from Carrier’s long experience in the development of twin-rotor screw compressors. The compressor is equipped with bearings with oversized rollers, oil pressure lubricated for reliable and durable operation, even at maximum load.

A variable control valve controlled by the oil pressure permits infinitely variable cooling capacity. This system allows optimal adjustment of the compressor cooling capacity and ensures exceptionally high stability of the chilled water leaving temperature.

Among the other advantages: if a fault occurs e.g. if the condenser is fouled or at very high water temperature, the compressor does not switch off, but continues operation with a reduced capacity (unloaded mode).
The silencer in the discharge line considerably reduces discharge gas pulsations for much quieter operation.

The condenser includes an oil separator that minimises the amount of oil in circulation in the refrigerant circuit and re-directs it to the compressor function.

OPTIONS

 

 

PHYSICAL DATA, STANDARD UNITS

 

1. In dB ref=10-12 W, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of +/-3dB(A)).
   Measured in accordance with ISO 9614-1 and certified by Eurovent.
2. In dB ref 20µPa, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of +/-3dB(A)). For information, calculated from the sound power level Lw(A).
3. Option 257 = Low noise level
4. Weight shown is guideline only. Please refer to the unit nameplate

ELECTRICAL DATA, STANDARD UNITS

 

1. Instantaneous start-up current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced start-up current of the largest compressor). Values obtained at standard Eurovent conditions: evaporator entering/leaving water temp. = 12°C/7°C, condenser entering/leaving water temp.
   = 30°C/35°C.
2. Instantaneous start-up current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced start up current of the largest compressor). Values obtained at operation with maximum unit power input.
3. Values obtained at standard Eurovent conditions: evaporator entering/leaving water temp. = 12°C/7°C, condenser entering/leaving water temp. = 30°C/35°C
4. Values obtained at operation with maximum unit power input.
5. Values obtained at operation with maximum unit power input. Values given on the unit nameplate.

PHYSICAL DATA, UNITS FOR HIGH CONDENSING TEMPERATURES (OPTION 150)

 

 

1. In dB ref=10-12 W, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of +/-3dB(A)).
   Measured in accordance with ISO 9614-1 and certified by Eurovent.
2. In dB ref 20µPa, (A) weighting. Declared dualnumber noise emission values in accordance with ISO 4871 (with an associated uncertainty of +/-3dB(A)). For information, calculated from the sound power level Lw(A).
3. Option 257 = Low noise level
4. Weight shown is guideline only. Please refer to the unit nameplate

 

1. Instantaneous start-up current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced start-up current of the largest compressor). Values obtained at standard Eurovent conditions: evaporator entering/leaving water temp. = 12°C/7°C, condenser entering/leaving water temp.
   = 30°C/35°C.
2. Instantaneous start-up current (maximum operating current of the smallest compressor(s) + locked rotor current or reduced start-up current of the largest compressor). Values obtained at operation with maximum unit power input.
3. Values obtained at standard Eurovent conditions: evaporator entering/leaving water temp. = 12°C/7°C, condenser entering/leaving water temp. = 30°C/35°C
4. Values obtained at operation with maximum unit power input.
5. Values obtained at operation with maximum unit power input. Values given on the unit nameplate.

DIMENSIONS/CLEARANCES

30XW-PZE/30XWHPZE 301-651

 

NOTES:

• Drawings are not contractually binding. Before designing an installation, consult the certified dimensional drawings supplied with the unit or available on request.
• For the positioning of the fixing points, weight distribution and centre of gravity coordinates please refer to the dimensional drawings.

30XW-PZE/30XWHPZE 801-1101

 

NOTES:

• Drawings are not contractually binding. Before designing an installation, consult the certified dimensional drawings supplied with the unit or available on request.
• For the positioning of the fixing points, weight distribution and centre of gravity coordinates please refer to the dimensional drawings.