Modular Air Cooled Chiller

Transcription

1 Models: 170 A/AR 210 A/AR 340 A/AR 420 A/AR 510 A/AR 630 A/AR 720 A/AR 840 A/AR 1050 A/AR 1260 A/AR Modular Air Cooled Chiller C - A _1 REGISTERED ISO 9002 S&E

2 Contents 1. Features Nomenclature Specifications Performance Characteristics Technical Data Outlines and Dimensions Control System Location and Installation Hydraulic System Trouble Shooting Main Parts List... 19

3 1. Features units are high thermodynamic engineering products, studied with high accuracy in balancing compressors, condensers and evaporators in order to offer high performances and wide safety margins. The choose of the materials and the equipment adopted for the products has been made without any compromises, taking care of quality and long life purposes. The products meet ISO 9001 requirements, an assurance beyond any doubts of the high producing standards followed by ACSON. Working Reliability In summer mode (the mode is simply selected by means of a switch) the unit produces chilled water through a plate exchanger while the condenser coils dissipate the heat rejection. In winter mode plate heat exchanger works as a water condenser to produce hot water while condenser coils dissipate cooling capacity to the ambient air. The periodic defreezing, necessary during low temperature functioning of the unit is run by the system by means of automatic switching of the 4-ways inversion cycle valve. Modular Design 170A(R) and 210A(R) are designed as the 2 original modules, different numbers of modules can be combined to satisfy different load. The largest combination is 8 modules, it convenient to transportation and installation. Highly Flexible Design The units are available in sizes covering a range from 50 to 420 kw nominal cooling capacity and with availability of many accessories, and the applications of high tech control and safety devices, give to these products high flexibility for their installation in commercial, residential and industrial environments. It couples with different type of fan coil or AHU, and satisfies different area by modular combination. Low Installation Costs The complete assembly of the units and function testing at the factory reduces the cost of installation on site. A rigid steel base distributes the weight of the unit to the support points and allows simple installation by an easy access to the lifting points. Factory Testing Each unit is pressure tested, vacuum tested, evacuated and charged with refrigerant requested. It is then tested at the factory s test bench under the design conditions specified by the customer. Upon request, a second series of tests can be carried out witnessed by the customer. Before shipment, each unit is re-checked for pressure and refrigerant charge control. 1

4 2. Nomenclature A MAC 170 A (R) ---F** Description Heat Pump Generation Norminal Cooling Capacity Air-Cooled Chiller Brand: ACSON General Specification Compressor ACSON Modular Air Cooled Chillers are equipped with highly efficient, reliable and silence reciprocated compressor with internal overload protection. The compressor adopts hermetic type to further eliminate operating noise and vibration. Air-cooled Condenser The two air cooled condenser coils with V-shaped is consist of staggered rows of 3/8" OD seamless copper tube, mechanically expanded onto die formed aluminum fins to ensure optimum heat exchange capability. Condenser Fan Motor To achieve the high air charge requirement, the unit is equipped with the high airflow propeller fan which is made of acryl styrene resin. The fan is direct driven by weatherproof single-phase motor to ensure reliable continuous operation. Evaporator The heat exchanger is made of stainless steel plates closely arranged and brazed together to ensure high heat exchange efficiency. The complete heat exchanger is insulated with thermal closed cell nitric rubber foam to give optimum thermal insulation. Refrigerant Circuit The refrigerant circuit is factory brazed and evacuated before accurately charged with R22 to ensure optimum operating requirement. To ensure flawless continuous operation, each refrigerant circuit is equipped with a carefully sized thermostatic expansion valve. Additional Safety Protection The modular air-cooled chillers are equipped with intelligently designed safety control to ensure continuous safe operation. High and low pressure switch is provided in cooling models to prevent the compressor damage resulting from both abnormally high discharge head pressure and low pressure due to insufficient gas. The heat pump models are provided with a high-pressure switch. Flow switch is provided in the unit to protect against damage to the water pump. The standard mechanical controller provides accurate water temperature control in the circuit by closely monitoring and reacting to the input from the water entering temperature, water leaving temperature and ambient air temperature. 2

5 3. Specifications MODEL 170A(R) 210A (R) 340A (R) 420A (R) 510A (R) NOMINAL COOLING CAPACITY Btu/h kcal/h W NOMINAL HEATING CAPACITY Btu/h kcal/h W RATED COOLING INPUT kw RATED HEATING INPUT kw COOLING RUNNING CURRENT A HEATING RUNNING CURRENT A POWER SOURCE CASING DIMENSION 380V / 3N~ / 50Hz MATERIAL ELECTRO-GALVANIZED MILD STEEL FINISH EPOXY POLYESTER POWER THICKNESS mm 1.5 LENGTH mm (in) 2056/ / / / /81 WIDTH mm (in) 1140/ / / / /126 HEIGHT mm (in) 2093/ / / / /82 NET WEIGHT kg OPERATING WEIGHT kg EVAPORATOR TYPE BRAZED PLATE HEAT EXCHANGER PLATE MATERIAL STAINLESS STEEL WATER VOLUME m WATER FLOW m 3 /h WATER LINE PIPING INSTALLATION PIPE CONNECTION mm (in) 38(1½ ) PIPE SIZE 5" FLANGE JOINT WATER PRESSURE DROP kpa CONDENSER COIL FIN MATERIAL HYDROPHILIC ALUMINIUM THICKNESS mm 0.11 ROWS 3 FIN PER INCH 13 FACE AREA m 2 /ft /19.59 CONDENSER FAN TYPE/DRIVE AXIAL BIG VANE AND LOW NOISE BLOWER FAN MOTOR kw BLADE MATERIAL GALVANIZED STEEL BLADE DIAMETER mm (in) 711.2/28 POWER SUPPLY 415V/3N~ /50Hz RATED RUNNING CURRENT Amp 2.01 RATED INPUT W 900 RATED OUTPUT W 750 AIR VOLUME CFM COMPRESSOR TYPE PROTECTION DEVICES REFRIGERANT TYPE CONTROL CHARGING MASS SCROLL COMPRESSOR H/L PRESSURE SWITCH/THERMAL AND CURRENT OVERLOAD PROTECTOR R22 THERMOSTATIC EXPANSION VALVE HEATING kg x x 3 COOLING kg x x x 3 Notes: 1. Nominal cooling capacity is based on 12 C/7 C entering/leaving evaporator, 35 C air ambient temperature. 2. Nominal heating capacity is based on 40 C /45 C entering/leaving evaporator, 7 C air ambient temperature. 3. All specifications are subjected to change by manufacturer without prior notice. 3

6 MODEL 630A (R) 720A(R) 840A(R) 1050A(R) 1260A(R) Btu/h NOMINAL COOLING CAPACITY kcal/h W Btu/h NOMINAL HEATING CAPACITY kcal/h W RATED COOLING INPUT kw RATED HEATING INPUT kw COOLING RUNNING CURRENT A HEATING RUNNING CURRENT A POWER SOURCE 380V / 3N~ / 50Hz MATERIAL ELECTRO-GALVANIZED MILD STEEL CASING FINISH EPOXY POLYESTER POWER THICKNESS mm 1.5 LENGTH mm (in) 2056/ / / / /81 DIMENSION WIDTH mm (in) 3200/ / / / /248 HEIGHT mm (in) 2093/ / / / /82 NET WEIGHT kg OPERATING WEIGHT kg EVAPORATOR TYPE BRAZED PLATE HEAT EXCHANGER PLATE MATERIAL STAINLESS STEEL WATER VOLUME m WATER FLOW m 3 /h WATER LINE PIPING INSTALLATION PIPE CONNECTION mm (in) 38(1½ ) PIPE SIZE 5" FLANGE JOINT WATER PRESSURE DROP kpa CONDENSER COIL MATERIAL HYDROPHILIC ALUMINIUM THICKNESS mm 0.11 FIN ROWS 3 FIN PER INCH 13 FACE AREA m 2 /ft /19.59 CONDENSER FAN TYPE/DRIVE AXIAL BIG VANE AND LOW NOISE BLOWER FAN MOTOR kw BLADE MATERIAL GALVANIZED STEEL BLADE DIAMETER mm (in) 711.2/28 POWER SUPPLY 415V/3N~ /50Hz RATED RUNNING CURRENT Amp 2.01 RATED INPUT W 900 RATED OUTPUT W 750 AIR VOLUME CFM COMPRESSOR TYPE SCROLL COMPRESSOR PROTECTION DEVICES H/L PRESSURE SWITCH/THERMAL AND CURRENT OVERLOAD PROTECTOR REFRIGERANT TYPE R22 CONTROL THERMOSTATIC EXPANSION VALVE HEATING kg x CHARGING MASS COOLING kg

7 4. Performance Table 1. Cooling Capacity MODEL LEAVING WATER TEMP ( C) COOLING CAPACITY AMBIENT TEMPERATURE ON CONDENSER ( C) MOTOR INPUT COOLING CAPACITY MOTOR INPUT COOLING CAPACITY MOTOR INPUT COOLING CAPACITY MOTOR INPUT COOLING CAPACITY MOTOR INPUT COOLING CAPACITY MOTOR INPUT 170 A/AR 210 A/AR 340 A/AR 420 A/AR 510 A/AR 630 A/AR 840 A/AR 1050 A/AR 1260 A/AR

8 2. HEATING CAPACITY AMBIENT TEMPERATURE ON CONDENSER ( C) MODEL LEAVING WATER TEMP ( C) HEATING CAP MOTOR INPUT HEATING CAP. MOTOR INPUT HEATING CAP. MOTOR INPUT HEATING CAP. MOTOR INPUT HEATING CAP. MOTOR INPUT 170 AR 210 AR 340 AR 420 AR 510 AR 630 AR 840 AR 1050 AR 1260 AR

9 5. Technical Data Correction Factors With Glycol Use GLYCOL% COOLING CAPACITY WATER FLOW PRESSURE DROP Water Pressure Drop 170A(R)/210A(R)/340A(R)/420A(R)/510A(R)/ 630 A(R)/840 A(R)/1050 A(R)/1260 A(R) MODEL WATER FLOW PRESSURE DROP l/s m 3 /h kpa Bar 170A(R) A(R) A(R) A(R) A(R) A(R) A(R) A(R) A(R)

10 6. Outlines and Dimensions Model: 170/210A(R) CHI LLED WATER IN CHI LLED WATER OUT Model: 340/420A(R) CHI LLED WATER I N CHI LLED WATER OUT Model: 510/630A(R) CHI LLED WATER I N CHI LLED WATER OUT 8

11 Model: 840A/A(R) CHI LLED WATER I N CHI LLED WATER OUT Model :1050A/A(R) CHI LLED WATER IN CHI LLED WATER OUT Model: 1260A/A(R) CHI LLED WATER I N CHI LLED WATER OUT 9

12 Unit Length and Combination Length MODEL Q.T.Y Unit Length(A) Combination Length(L) 170/210A(R) / / /420A(R) / / /630A(R) / / A(R) / / A(R) / / A(R) / /

13 7. Control System Ensure that the rated voltage of the unit corresponds to that of the nameplate before general precautions. Provide a power outlet to be used exclusively for each unit. A power supply disconnects and a circuit breaker for overcurrent protection should be provided in the exclusive line. The modular air-cooled chillers must be well grounded. It absolutely cannot be connected with gas-pipe, water pipe and telephone line. Wiring diagram: 170/210A (Main) TO SUBSI DI ARY UNI T AC/ DC OPEN CLOSE OPEN OPEN OPEN CLOSE CLOSE CLOSE Wiring diagram: 170/210A (Part) OPEN CLOSE OPEN OPEN OPEN CLOSE OPEN OPEN 11

14 Wiring diagram: 170/210AR (Main) ENTERI NG WATER THERMOSTAT LEAVI NG WATER THERMOSTAT ENVI RONMENT THERMOSTAT DEFROSTI NG THERMOSTAT TO SUBSI DI ARY UNI T POWER AC/ DC OPEN CLOSE OPEN CLOSE CLOSE CLOSE CLOSE CLOSE Wiring diagram: 170/210AR (Part) ENTERI NG WATER THERMOSTAT LEAVI NG WATER THERMOSTAT ENVI RONMENT THERMOSTAT DEFROSTI NG THERMOSTAT TO LAST SUBSI DI ARY UNI T TO NEXT SUBSI DI ARY UNI T OPEN CLOSE OPEN CLOSE CLOSE CLOSE OPEN OPEN 12

15 ET 5S RTDiagram of Wiring L1 L2 L3 RNRBEAKRN MAS IRN NBEAKERT R S T PAT1N PBREAKERR AElectric parameter (electronic control circuit) MODEL 170A/AR 210A/AR POWER 380V/3N~/50Hz 380V/3N~/50Hz POWER INPUT OPERATION CURRENT (A) COOLING HEATING COOLING HEATING POWER SUPPLY WIRE WIRE (R/S/T) SECTION AREA (mm²) NUMBER 3 10 POWER SUPPLY WIRE SECTION AREA 4 (mm²) NEUTRAL WIRE NUMBER 1 EARTH WIRE SECTION AREA (mm²) NUMBER 1 4 CONTROL WIRE - RVVP2 1mm 2 Notes: 1. The above data are based until electronic parameter. 2. The wires should be well connected. 3. Every wire cannot pipes, compressor, fan motor or other movable parts. 13

16 8. Location and Installation 1. Inspection All modular air-cooled chillers are transported with pallet. Each unit has been filled with refrigerant. It is not necessary to fill it again. As soon as the unit is received, it should be inspected for any damage that may have occurred in transit. And all the separated parts are received. 2. Storage of the Unit If the chillers are not installed for the moment, it is strictly prohibit stacking them. 3. Location of the Unit Don t install the unit in airshaft, courtyard, or other places which is limited for the unit. Or it will maximize the vibration and noise because of the echo and resonance of the wall or other obstacles. Space for access to front and sides of the equipment must be provided to accommodate such maintenance and service and to permit unobstructed flow of air to and from the unit. Install the modular air-cooled chillers in a way such that hot air distributed by the condensing unit cannot be drawn in again (as in the case of short circuit of hot discharge air). Allow sufficient space for maintenance around the unit. Ensure that there is no obstruction of airflow into or out of the unit. Remove obstacles that block air intake or discharge. 3.5 The location must be well ventilated, so that the unit can draw in and distribute plenty of air thus lowering the condensing temperature. OBSTACLE BLOCKI NG AI R OUTLET 3000mm high space for 5m ventilate high space for ventilate Obstacle block air OB STACAL intake BLOCK AIR INTAKE Space between units and the wall should be at least 1.8mm unit and the wall should be at least 1m Space between units: 1.5m~3.0mm Space between units 1.5m 3.0mm The hight of the unit The height of the unit Space between units and the wall should Space be at least between 1.8mm unit and the wall should at least 1m Obstacle blocking air OBSTACLE inlet BLOCKI NG AIR INLET Obstacle OBSTACAL MO DULAR AIR COOLED CHI LLERS Modular air cooled chillers Figure 1 Figure 2 A place protected from direct sunlight, otherwise use an awning for protection from storm and rain, which should be 5m high from the unit and well ventilated. FORK LI FTER Min 5m Min 5m Air Discharge AIR DISCHARGE CABLE CRANE CRAMP BAR BACKI NG ANGLE Figure 3 Figure 4 1m 1m PALLET THE CHI LLER Figure 3 Figure 4 14

17 The location must not be susceptible to dust or oil mist to avoid condenser coil being choke by the contaminant. As the general safety precaution, it is advised that no flammable danger gas should be located near to the chiller. 4. Handling Each modular air-cooled chiller is skidded at the factory. Care should be taken during handing to avoid damage to the unit and internal components. Fork lifter or cable crane should be used for easy to schlep. 5. Lifting Method When the modular air-cooled chillers are to be lifted and moved attached ropes to the suspension plates provided on the top of the unit. When it is lifted, hook should be as directly aligned over the center of gravity as possible. Care should be taken to avoid contact with the main unit while carrying. It is necessary to protect the chiller with the blanket or pallet so that the ropes should not injure the unit. 6. Installation Base The unit must be installed on a flat and level concrete foundation. It can be conveniently installed on rooftop, terrace and other proper places. Drain pipe Strong enough FOUNDATI ON BOLT M20x300 FOUNDATION BOLT M20X FOUNDATI ON I S CONCRETE CONSTRUCTI ON OR CHANNEL STRUCTUR, FOUNDATI ON MUST SMOOTH mm THI CKNESS RUBBER SHOCK PAD IS NEEDED BETWEEN THE FOUNDATI ON AND THE FRAME M20 BOLT FIX ONE UNI T. 4.n IS THE TOTAL MODULAR UNI T. ( NOTES: MAC170A( R) / 210A( R) MODULAR AI R COOLED CHI LLLERS' I NSTALLATI ON THE LOCATI ON OF THE FOOT BORE 170A(R)/ 210A(R) MODULAR AIR COOLED CHILLERS INSTALLATION Notes: 1. The foundation should be mates or channel structure which can support at least 400kg/m mm thickness rubber shock pad is needed between the unit and the foundation. 3. n is the total number of the module. 15

18 9. Hydraulic System Inner schematic diagram of the inner hydraulic system: 3 Water inlet 10 Water outlet ITEM DESCRIPTION NOTES 1 PLATE HEAT EXCHANGER Used as an evaporator when cooling. 2 COMPRESSOR High efficiency and hermetic reciprocation compressor. 3 4-WAY VALVE Switch between cooling and heating. 4 RECEIVER It can receive the liquid from the refrigerant and promote the condenser depression/super heat. 5 SIGHT GLASS Observe window of the refrigerant in tube. 6 DRIER FILTER 7 SOLENOID VALVE Start up the sub-compressor. 8 EXPANSION VALVE Control the flow of the refrigerant 9 STAINER Adjust the pressure of the system. 10 HEAT EXCHANGER Used as an condenser when cooling 11 CHECK VALVE Control the direction of the refrigerant. 12 FAN MOTOR Promote the efficiency of the heat exchange. To ensure satisfactory operation and performance, the following points should be noted for the field piping arrangements of the complete refrigerant cycle. The bottom compartment supplied standard with the unit to facilitate and reduce the design and installation times. The compartment has been carefully designed and sized to optimize operating efficiency. The major component in the bottom compartment includes: - Plate brazed Heat exchanger - Auto Air Vent - Water Relief Valve - Expansion Tank 16

19 Connect the water pipe on the water inlet and outlet on the side of the chiller. The following points should be noted for the waterworks: 1. Backwater should be demineralized water. 2. Water circulating pump should be provided. 3. Water flow should not be lower that the nominal value of the unit. 4. Suggesting insulating storage water tank is installed. 5. Water-supply safety valve is needed. The following drawing is the reference of WATER SYSTEM INSTALLATION. Two types of installation: WATER I NLET 15 WATER I NLET WATER OUTLET OVERFLOWOUTLET AUXI LI ARY ELECTRI CAL HEATER TERMI NAL DEVI CE WATER OUTLET OVERFLOWOUTLET TERMI NAL DEVI CE SYSTEM 1 SYSTEM 2 1 Pressure Gauge (0-1MPa) 7 Auto air vent valve 13 Check Valve 2 Flexible Joint 9 Expansion Tank 14 Bypass Valve 3,5,8 Gate Valve 10 Y-strainer 15 Thermometer(0-100) 4 Drain Valve 11 Reducer 6 Expansion Tank 12 Pump Note: Both system 1 and system 2 are used on less than 6unit connection (Inc. 6 units). System 2 is most used on more than 6 unit connection. This is helpful for balance of the hydraulic system. Prior to starting up the unit, flushing of the water system is required: 1. Shut off the inlet and outlet valves and turn on the bypass valve. 2. Run the pump to circulate the water in the system for a while. 3. Open up the strainer to inspect the filter. 4. Clean the filter if necessary to ensure no debris trap in the piping system. 5. Shut off the bypass valve and turn on the inlet and outlet valves 6. System is ready for operation. Caution Be sure to use clean water when filling in the water circuit to avoid heavy corrosion and choking of the system. If the chiller is operated under very oily, salty or acidic atmosphere or water, these substances may lead to capacity drop or failure of the unit. 17

20 10. Trouble Shooting When any air conditioner malfunction is noted, immediately switch off the power supply to the unit and contact the local dealer, if necessary. Some simply trouble-shooting tips are given below: SYMPTOMS POSSIBLE CAUSES REMEDIAL ACTION Compressor stops without reason. (alarm lamp is on) Noisy and vibrancy 1. Control system faulty. 2. Compressor faulty. 1. Dirt or dust in fan motor. 2. Compressor noisy. 3. Vibrancy noise caused by floor or wall. 1. Contact local dealer. 1. Clean away dirt or dust. 2. Contact local dealer. 3. Check the installation. Fan motor cease running. 1. Circuit faulty. 2. Overheat relay starting. 1. Check the circuit and repair when necessary. 2. Contact local dealer. Insufficient cooling/heating. 1. Compressor faulty. 2. Contamination in hydraulic system. 3. Clogged condenser coil. 4. Low refrigerant charge. 1. Contact local dealer. 2. Clean hydraulic system. 3. Clean the coil. 4. Add refrigerant. Cycling water pump does not start. 1. No power supplies. 2. Water pump motor faulty. 3. water pump 1. Check power system. 2. Check water pumps or change if necessary. 3. Try to run the water vane or change water pumps it necessary. Water cycling faulty. 1. Gas in cycling system. 2. Deposit or dirt in the heat exchanger. 1. Discharge the gas. 2. Backwash heat exchanger. Unit does not start. 1. Water flow switch faulty. 2. Pressure switch faulty. 1. Check water flow. 2. Check system pressure. 18

21 11. Main Parts List for 170/210A(R) 1. COMPRESSOR 2. PLATE HEAT EXCHANGER 3. FAN MOTOR 4. MOTOR 5. 4-WAY VALVE 6. EXPANSION VALVE 7. RECEIVER 8. CHECK VALVE 9. SOLENOID VALVE 10. CONTACTOR 11. THERMOSTAT 12. STAINER 13. COPPER TUBE 14. METAL 19

22 DOP: While upmost care is taken in ensuring that all details in the publication are correct at time of going to press, we are constantly striving for improvement and therefore reserve the rights to alter model specifications and equipment without prior notice. Details of specifications and equipment are also subject to change to suit local conditions and equirements and not all models are available in every market.