Related Manuals for Carrier Aquasnap 30RW
Summary of Contents for Carrier Aquasnap 30RW
- Page 1 30RW/RWA Water-Cooled/Condenserless Liquid Chillers with Integrated Hydronic Modules Nominal cooling capacity 20-310 kW 50 Hz Installation, operation and maintenance instructions...
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Page 2: Table Of Contents
Contents 1 - IntRoDUCtIon ..................................4 1.1 - Installation safety considerations ............................4 1.2 - Equipment and components under pressure ........................5 1.3 - Maintenance safety considerations ............................5 1.4 - Repair safety considerations ..............................6 2 - PRelImInaRy CheCks ..............................7 2.1 - Check equipment received .............................. - Page 3 10 - ConDenseR wateR flow Rate ..........................29 10.1 - Condenser pump flow/pressure curve ..........................29 10.2 - Available static system pressure (condenser side) ......................29 11 - 30Rw UnIt oPeRatIon wIth a DRyCooleR ..................... 30 11.1 - Operating principle ................................30 11.2 - Auxiliary electronic analogue input and output and discrete output board (AUX1) for control of the drycooler .
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Page 4: Introduction
1 - INTRODUCTION DO NOT COVER ANY PROTECTION DEVICES. Prior to the initial start-up of the 30RW/30RWA units, the This applies to fuse plugs and safety valves (if used) in the people involved in the on-site installation, start-up, operation refrigerant or heat transfer medium circuits. Check if the and maintenance of this unit should be thoroughly familiar original protection plugs are still present at the valve outlets. -
Page 5: Equipment And Components Under Pressure
1.2 - Equipment and components under pressure Operating checks: IMPORTANT INFORMATION REgARDINg ThE These products incorporate equipment or components under pressure, manufactured by Carrier or other manufacturers. REFRIgERANT USED: We recommend that you consult your appropriate national • This product contains fluorinated greenhouse gas trade association or the owner of the equipment or compo- covered by the Kyoto protocol. -
Page 6: Repair Safety Considerations
1.4 - Repair safety considerations Avoid spilling liquid refrigerant on skin or splashing it into the eyes. Use safety goggles and safety gloves. Wash All installation parts must be maintained by the personnel in any spills from the skin with soap and water. If liquid charge, in order to avoid material deterioration and injuries refrigerant enters the eyes, immediately and abundantly to people. -
Page 7: Preliminary Checks
2.2 - Moving and siting the unit Use only original replacement parts for any repair or compo- nent replacement. Consult the list of replacement parts that corresponds to the specification of the original equipment. 2.2.1 - moving Do not drain water circuits containing industrial brines, See chapter 1.1 - “Installation safety considerations”. -
Page 8: Dimensions, Clearances, Weight Distribution
For these checks national regulations must be followed. If • Verify the free passage of access and safety routes. the national regulation does not specify any details, refer • Check that ventilation in the plant room is adequate. to standard EN 378-2 as follows: •... -
Page 9: 30Rw/30Rwa 020-045 - Unit With Hydronic Module (Option) And/Or Unit With Option 116E (Victaulic Water Connection At The Top)
3.2 - 30RW/30RWA 020-045 - unit with hydronic module (option) and/or unit with option 116E (Victaulic water connection at the top) 30RW 020-030 30RW 040-045 1-1/4” Gas 2” Gas 1-1/4” Gas 2” Gas 1204 3.3 - 30RW/30RWA 060-150 - unit with or without hydronic module 2004 legend: NOTE: Non-contractual drawings. -
Page 10: 30Rw/30Rwa 160-300 - Unit Without Hydronic Module (Standard)
3.4 - 30RW/30RWA 160-300 - unit without hydronic module (standard) 2300 1100 2013 (RW) - 2048 (RWA) 3.5 - 30RW/30RWA 160-300 - unit with hydronic module (option) 2950 1100 legend: NOTE: Non-contractual drawings. Refer to the certified dimensional drawings. All dimensions are in mm. Water inlet For the positioning of the fixing points, weight distribution and centre of gravity coordinates, also refer to the certified... -
Page 11: Physical And Electrical Data
4 - PHySICAl AND ElECTRICAl DATA 4.1 - Physical data 30RW/RWA Nominal cooling capacity 30RW* 20.2 25.9 29.9 39.7 45.3 56 30RWA** 24.4 28.2 37.8 43.5 54 Operating weight 30RW weight without hydronic module 1079 1144 1357 1471 1421 1491 30RWA weight without hydronic module kg 1000 1318 1318 1361 1371 Extra weight... -
Page 12: Electrical Data
The neutral (N) conductor must not be connected directly to the unit (if • The Carrier 30RW and 30RWA units are designed and built to ensure necessary use a transformer). conformance with these codes. The recommendations of European standard... -
Page 13: Electrical Data, Optional Hydronic Module
°C < 40 IV - Maximum air temperature °C Please refer to the operating conditions given in this manual or in the specific conditions in the Carrier selection programs. V - Potentially explosive atmospheres Non-ATEX environment motors of evaporator hydronic module pumps, 30Rw/30Rwa (option 116C) No.** Description***... - Page 14 °C < 40 IV - Maximum air temperature °C Please refer to the operating conditions given in this manual or in the specific conditions in the Carrier selection programs. V - Potentially explosive atmospheres Non-ATEX environment motors of condenser hydronic module pumps, 30Rw (option 270C, variable-speed pump) No.** Description***...
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Page 15: Compressor Usage And Electrical Data Table
4.4 - Compressor usage and electrical data table Compressor I Nom I Max Circ. 30RW/30RWA reference 020 025 030 040 045 060 070 080 110 120 135 150 210 245 275 300 DQ 12 CA 025 EE 9.9 13.7 DQ 12 CA 001 EE 12.6 17.6 DQ 12 CA 002 EE 14.6 20.4... -
Page 16: Operating Range 30Rwa
5.3 - Operating range 30RWA 5.6 - Variable flow evaporator Variable evaporator flow can be used in standard chillers. The chillers maintain a constant leaving water temperature under all flow conditions. For this to happen, the minimum flow rate must be higher than the minimum flow given in the table of permissible flow rates and must not vary by more than 10% per minute. -
Page 17: Minimum Chilled Water Loop Volume
5.9 - Minimum chilled water loop volume 5.10 - Maximum water loop volume (evaporator and condenser side) Whichever the system, the water loop minimum capacity is given by the formula: Units with hydronic module incorporate an expansion tank sized for the maximum water loop volume. Capacity = Cap (kW) x N Liters The table below gives the maximum water loop volume (in Where Cap is the nominal system cooling capacity (kW) at... -
Page 18: Evaporator And Condenser Pressure Drop Curves
5.12 - Evaporator and condenser pressure drop curves 10000 1000 Water flow rate, l/s legend 30RW 020 30RW 110 30RW 025-030 10 30RW 120 30RW 040 11 30RW 135 30RW 045 12 30RW 150 30RW 060 13 30RW 160-185 30RW 070 14 30RW 210-245 30RW 080 15 30RW 275-300... -
Page 19: Electrical Connection
6 - ElECTRICAl CONNECTION Control box 30RW/30RWA 060-150 6.1 - Electrical connections 30RW/30RWA units Control box 30RW/30RWA 020-045 PE (M8) 39 39 PE (M8) Control box 30RW/30RWA 160-300 legend PE (M12) 181.5 Main disconnect switch PE Earth connection Power supply cable section (see table “Recommended wire sections”). 10.5 NOTES: The 30RW/30RWA 020-300 units have only one power... -
Page 20: Power Supply
The following is only to be used as a guide- refer to the wiring diagrams. line, and does not make Carrier in any way liable. After wire sizing has been completed, using the certified dimensional WARNINg: Operation of the chiller with an improper... -
Page 21: Water Connections
In case additives or other fluids than those recommended by For size and position of the heat exchanger water inlet and Carrier are used, ensure that the fluids are not considered as a outlet connections refer to the certified dimensional drawings gas, and that they belong to class 2, as defined in directive supplied with the unit. -
Page 22: Water Connections
To avoid corrosion by differential aeration, the complete heat exchange circuit must be charged with nitrogen, if it is drained for longer than one month. If the heat exchange fluid does not comply with Carrier recommendations, the circuit must immediately be filled with nitrogen. - Page 23 Typical evaporator hydronic circuit piping diagram 30RW/30RWA 020-300 legend Installation components Components of unit and hydronic module 11 Air vent 12 Thermometer sleeve Victaulic screen filter 13 Flexible connection Expansion tank 14 Shut-off valve Safety valve 15 Pressure gauge Water pump 16 Charge valve Purge valve and pressure tap 17 Plate heat exchanger outlet...
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Page 24: Refrigerant Line Connections (30Rwa)
8 - REFRIgERANT lINE CONNECTIONS (30RWA) 8.2 - general (Split units for connection to air-cooled condensers) Refrigerant pipe sizing must be carried out, taking account of the following constraints: 8.1 - Recommendations for the installation of liquid chillers with remote condensers Oil return to the compressor must be ensured for the majo-rity of applications. -
Page 25: Discharge Pipe Sizing
8.5 - liquid pipe sizing The diagrams in the appendix can obviously be used to calculate the actual pressure drops for the piping under consideration: The 30RWA compressors are supplied with an oil that is fully miscible with refrigerant R-407C in the liquid phase. Based on the pipe diameter and the cooling capacity Consequently low refrigerant velocities in the liquid lines find the equivalent length, producing 1.5 K pressure... - Page 26 Table 1 - R-407C correction factors for copper tube, 30RWA Condensing Saturated suction temperature, °C temperature, °C 2.01 1.36 1.09 1.61 1.34 1.07 1.31 1.30 1.06 1.07 1.26 1.04 0.89 1.23 1.03 0.74 1.19 1.01 2.11 1.27 1.08 1.69 1.23 1.06 1.37 1.19...
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Page 27: Nominal Evaporator Water Flow Control
9 - NOMINAl EVAPORATOR WATER FlOW CONTROl Entering water pressure reading The water circulation pumps of the 30RW/RWA units have been sized to allow the hydronic modules to cover all pos-sible configurations based on the specific installation con-ditions, i.e. for various temperature differences between the entering and the leaving water (∆T) at full load, which can vary between 3 and 10 K. -
Page 28: Evaporator Pump Flow/Pressure Curve
Example: Unit with a given nominal flow rate of 4.8 l/s 9.3 - Available static system pressure (evaporator side) single pump 14 15 Water flow rate, l/s legend Unit pump curve Water flow rate, l/s Plate heat exchanger pressure drop (to be measured with the pressure gauge installed at the water inlet and outlet) Installation pressure drop with control valve wide open legend... -
Page 29: Condenser Water Flow Rate
10 - CONDENSER WATER FlOW RATE 10.2 - Available static system pressure (condenser side) The 30RW units with hydronic module are equipped with a variable-speed water pump, automatically adjusting the single pump flow rate to maintain the lowest condensing pressure possible. -
Page 30: 30Rw Unit Operation With A Drycooler
11 - 30RW UNIT OPERATION WITH A DRyCOOlER The electronic board (AUX1) integrated in the control box of the drycooler has analogue inputs for outside air 11.1 - Operating principle tempe-rature and drycooler leaving water temperature sensors, as well as eight discrete outputs permitting control The 30RW units have been specially designed to optimise of up to eight fan stages. -
Page 31: 30Rw Units Without Evaporator And Condenser Pump, Three-Way Valve Configuration For Low Outside Temperature Application
11.5 - 30RW units without evaporator and condenser A fan configuration with a variable-speed master fan permits pump, three-way valve configuration for low outside year-round operation down to -10°C outside temperature. temperature application 12.3 - Dual-circuit condenser with separate ventilation and interlaced ventilation 30RW units can be supplied from the factory without evapo- rator and condenser pump. -
Page 32: Possible Fan Arrangements Based On The Air-Cooled Condenser Type Used In The Installation
12.6 - Possible fan arrangements based on the air-cooled condenser type used in the installation Single-circuit condenser Circuit Possible fan arrangements Minimum configuration 30RWA 020-045 Minimum configuration 30RWA 060-150 Notes Is the head fan that can be fixed or variable speed If fan has variable speed, the outputs assigned to board AUX1 are CH1 to CH8 from fan... - Page 33 Dual-circuit condenser with interlaced ventilation Circuit Possible fan arrangements A + B Minimum configuration 30RWA 160-300 A + B A + B Notes Is the head fan that can be fixed or variable speed for circuits A A + B and B.
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Page 34: Start-Up
13 - START-UP IMPORTANT: The two units must be equipped with option No. 155 - CCN time scheduling and communica- 13.1 - Preliminary checks tions “Clock Board”. • Never be tempted to start the chiller without reading Depending on the installation and control type, each unit can fully, and understanding, the operating instructions and control its own water pump. -
Page 35: Major System Components And Operation Data
The products that may be added for thermal insulation of the protection module. containers during the water piping connection procedure must be chemically neutral in relation to the materials and coatings to which they are applied. This is also the case for the products originally supplied by Carrier. -
Page 36: Thermostatic Expansion Device
14.5 - Refrigerant NOTES: Monitoring during operation, re-qualification, re-testing and re-testing dispensation: • Follow the regulations on monitoring pressurised 30RW/30RWA units operate exclusively with R-407C. equipment. 14.6 - High-pressure switch • It is normally required that the user or operator sets up and maintains a monitoring and maintenance file. -
Page 37: Variable-Speed Hot Water Loop Pump (Condenser Side)
14.11 - Variable-speed hot water loop pump 15 - MAINTENANCE (condenser side) During the unit operating life the service checks and tests This pump is factory-installed as standard. It is a variable- must be carried out in accordance with applicable national speed pump with available system pressure. -
Page 38: General Unit Maintenance
15.2 - general unit maintenance WARNINg: To ensure proper operation of 30RW units there must be at least 12 K of subcooling as the liquid • Keep the unit itself and the space around it clean and refrigerant enters the expansion valve. free of obstructions. -
Page 39: Leak Detection
15.5 - leak detection 15.7 - Recharging liquid refrigerant CAUTION: 30RW units are charged with liquid hFC- Never use oxygen or dry air, as this would cause a risk of fire or explosion. 407C refrigerant. • Carry out a leak detection test on the whole system using the following methods: pressure test using This non-azeotropic refrigerant blend consists of 23% R-32, dehydrated nitrogen or a mixture of nitrogen and... -
Page 40: Compressors
Characteristics of R-407C Saturated bubble Saturated dew Saturated bubble Saturated dew Saturated bubble Saturated dew (relative) point temp., °C point temp., °C (relative) point temp., °C point temp., °C (relative) point temp., °C point temp., °C -28,55 -21,72 10,5 23,74 29,35 47,81 52,55... -
Page 41: Aquasnap Maintenance Program
Check the tightening of the electric connections, All maintenance operations must be carried out by contactors, disconnect switch and transformer. technicians who have been trained on Carrier products, • Check the status of the contactors and fuses. observing all Carrier quality and safety standards. -
Page 42: Start-Up Ckecklist For 30Rw/Rwa Liquid Chillers (Use For Job File)
17 - START-UP CkECklIST FOR 30RW/RWA lIQUID CHIllERS (USE FOR jOb FIlE) Preliminary information Job name: ....................................... Location: ........................................ Installing contractor:..................................... Distributor: ......................................Start-up preformed by: ..................................Compressors Model: .................... Serial No..................Compressors Circuit a Circuit b 1. Model No.................. 1. Model No................Serial No. - Page 43 Unit start-up CWP starter has been properly interlocked with the chiller Oil heaters have been energized for at least 24 hours (30RWA) Oil level is correct All discharge and liquid valves are open Unit has been leak checked (including fittings) Locate, repair, and report any refrigerant leaks ..........................................
- Page 44 Follow and observe the procedure described. NOTES: ....................................................................................www.eurovent-certification.com www.certiflash.com Order No: 13431-76, 11.2011 - Supersedes order No: 13431-76, 02.2009 Manufacturer: Carrier SCS, Montluel, France. Manufacturer reserves the right to change any product specifications without notice. Printed in the European Union.
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