AIR COOLED SCROLL WATER CHILLERS

Transcription

1 GENERAL ELECTRIC AIR COOLED SCROLL WATER CHILLERS R-22 AALQ Series AALQ010A thru AALQ070A 10 TR thru 70 TR 35 kw thru 246 kw GE_AALQ_Series.indd 1 3/26/12 3:30 PM

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3 CONTENTS Model decoding Introduction Unit features, standard specifications & options Physical data Selection procedure Performance data Electrical data Water side pressure drop Unit dimensions Typical schematic wiring diagram Microprocessor controller Application guidelines Rigging instructions Installation clearance Mounting location Load distribution Continuing research results in steady improvements. Therefore, these specifi cations are subject to change without notice 1 GE_AALQ_Series.indd 1

4 MODEL DECODING & PRODUCT INFORMATION 1, 2, 3 & 4 BASIC (SERIES) 5, 6 & 7 UNIT SIZE (NOMINAL CAPACITY) 8 REFRIGER- ANT 9 ELECTRICAL SUPPL ( V -Ph-Hz ) Y 10 CONDENSER COIL 11 CIRCUIT BREAKER 12 COOLER OPTIONS 13 HGBP OPTIONS AALQ AIR COOLED SCROLL WATER CHILLERS A : R-22 L : 3 80/ (4 WIRE) A : ALUMINUM FIN B : PRE-COATED ALUMINUM FIN C : COPPER FIN D : ALUMINUM FIN WITH ResisTec COATING E : COPPER FIN WITH ResisTec COATING (SEE NOTE # 1 BELOW) A : COMPRESSOR CIRCUIT BREAKER A : STANDARD WITH VICTAULIC CONN.* B : FLANGE CONN.* (OPTIONAL) C : ASME STAMPED WITH VICTAULIC CONN. (OPTIONAL)** D : ASME STAMPED WITH FLANGE CONN. (OPTIONAL)** A : STANDARD UNIT WITHOUT HGBP B : HGBP (OPTIONAL) NOTES: * NOT APPLICABLE FOR MODELS AALQ010A TO AALQ035A, MPT (MALE PIPE THREAD) CONNECTION ONLY. ** ASME OPTION IS APPLICABLE FOR MODELS AALQ020A TO AALQ070A ONLY. 1. FOR OTHER COATING, SPECIFY YOUR REQUIREMENTS IN WRITING. 2. COMPUTER SELECTED DIGITS (FROM AA TO ZZ ) DESCRIBING OTHER OPTIONS & ACCESSORIES OR COMBINATIONS THEREOF, SUCH AS: - CHILLER GUARD - UNIT DISCONNECT SWITCH - WATER FLOW SWICH - SPRING ISOLATOR - MULTI-ResisTec PIPING - MULTI- ResisTec SHEETMETAL etc & 15 OPTIONS & ACCESSORIES SEE NOTE # 2 BELOW 2 GE_AALQ_Series.indd 2

5 INTRODUCTION GE Air cooled scroll chillers (AALQ series) are the heart of most central Air Conditioning systems for medium size buildings. They consist of one or more hermetic scroll compressors, air-cooled condenser coils with condenser fan(s) and motor(s), insulated liquid cooler, expansion device, interconnecting refrigerant piping, oil & refrigerant charge, control panel, wiring and other auxiliaries. AALQ series, The new generation of air cooled packaged liquid chillers. AALQ series air cooled scroll chillers are available in capacity range 10 TR (35 kw) to 70 TR (246 kw) at AHRI conditions, in one single enclosure. Utilizing refrigerant R-22 as working fluid. AALQ series chillers have been designed and manufactured to meet the requirements of the Middle East severe climatic conditions and specifically for outdoor installation, on roofs or ground level. AALQ series are factory assembled, leak tested, evacuated, internally wired, fully charged with refrigerant. Each AALQ series chillers are fully factory tested before delivery and are ready for installation. All that is required on site is to connect chilled water pipes and main power supply. Scroll Compressor: The scroll compressors consist of two involutes or Archimedean spirals (Figure-1). One spiral is positioned inside the other to form a series of recent-shaped pockets. During compression the upper spiral remains stationary and the lower one, being eccentrically mounted on the drive sha, describes an orbital rather than a simple rotary motion. 1. DISCHARGE CONNECTION 2. ORBIT SCROLL 3. FIXED SCROLL 4. COUPLING JOINT 5. SUCTION CONNECTION 6. SHAFT 7. MOTOR 3 GE_AALQ_Series.indd 3

6 INTRODUCTION FIGURE- 1 How a Scroll Compressor works: Compression in the scroll is created by the interaction of an orbiting spiral and a stationary spiral. Refrigerant enters the outer openings as one of the spirals orbits. The open passages are sealed off as gas is drawn into the spiral. As the spiral continues to orbit, the gas is compressed into two increasingly smaller pockets. By the time the gas arrives at the center port, discharge pressure has been reached. Actually, during operation, all six gas passages are in various stages of compression at all times, resulting in nearly continuous suction and discharge. 4 GE_AALQ_Series.indd 4

7 INTRODUCTION Refrigerant enters the compressor from the suction connection flows around the motor s housing and enters at the bottom side through the openings. Oil droplets separate from the refrigerant and fall into the oil sump. All suction refrigerant passes through the electrical motor, ensuring full motor cooling. After that the refrigerant enters the scroll elements. COOLERS 1. Compact Design Shell and Tube Water Coolers (for models AALQ020A - AALQ070A) The DX shell and tube cooler with removable U shaped bundled tubes are made of internally grooved copper tubes expanded into heavy steel tubular sheets. The cooler housing and baffl es are constructed from steel and brass respectively. All coolers are fi tted with vent, drain connection and victaulic, threaded or flange type water pipe connections. 2. Coaxial Heat Exchangers: (for models AALQ010A - AALQ015A) The heat exchangers utilize a spirally enhanced inner tube surface to achieve greater heat transfer and optimized fluid flow. The inner tube enhancement provides greater efficiency than straight tubing and allowe for higher internal burst limit and compression strength. Both above types of coolers are insulated with heavy closed cellular foam insulation (3/4 thick). UNIT MODEL COOLER DESIGN PRESSURE, (BAR/PSIG) WATER SIDE TEST PRESSURE, (BAR/PSIG) DESIGN PRESSURE, (BAR/PSIG) REFRIGERANT SIDE TEST PRESSURE, (BAR/PSIG) AALQ010A - AALQ070 A ST D 16/ /335 29/ /610 AALQ020A - AALQ070 A ASME (option) 10/ / / /342 5 GE_AALQ_Series.indd 5

8 UNIT FEATURES, STANDARD SPECIFICATIONS & OPTIONS FEATURES These AALQ series, packaged air cooled water chillers are designed to provide engineering excellence in comfort air conditioning and industrial cooling with a superior combination of energy saving, performance, application flexibility, ease of service & maintenance and withstanding extremely high ambient temperatures. These chillers incorporate a wide range of features including: Microprocessor controller, which monitors analog and digital inputs to achieve precise control & protective functions of the air cooled water chiller units. The microprocessor controller is complete with all the hardware and software necessary to control the chiller unit and ensures its efficiency and reliability. Compact unit design and excellent serviceability. All units incorporate separate subcooler circuit which is integral to the condenser surface. This additional subcooling circuit provides superior system performance. High Energy Efficiency Ratio (EER) hermetic scroll compressors. Single point power connection to minimize job site installation cost and time. Completely wired control panel with the advanced microprocessor controller that provides all the necessary operations and safety controls. Made ready connection for remote ON/OFF switch and General Alarm output. Independent refrigeration circuits. Compressor connections are Direct On Line (DOL) for all models (see electrical data). Low noise condenser fans, direct drive at 1000 RPM with rolled form venturi design to eliminate airflow recycling & short circuiting. Condenser fan blades are die-cast aluminum or aluminum plates type with aerodynamic design, top discharge & provided with protective grill mounted on top panel within the unit casing. All condenser fan motors are totally enclosed air over type (TEAO) with class F winding insulation. STANDARD SPECIFICATIONS CAPACITY CONTROL The GE air cooled scroll water chillers incorporate stepped load shedding as required by most energy management systems. Modulation of capacity in response to system load requirements is affected by the microprocessor controller which monitors the leaving water temperature. Capacity control is achieved by cycling compressors ON/OFF and sequential operation of compressors which provides optimal part load capacities for chillers with multiple compressors. See the following table for the standard and optional capacity control for each unit. MODEL NUMBER AALQ010A-AALQ015A AALQ020A -AALQ035A AALQ040A -AALQ045A AALQ050A AALQ055A -AALQ070A NOTES: STANDARD 100-OFF OFF OFF OFF OFF % FULL LOAD CAPACITY CONTROL OPTIONAL 100-HGBP-OFF HGBP-OFF HGBP-OFF HGBP-OFF HGBP-OFF 1. HGBP = Hot gas bypass available on lead compressor for all models (optional). 2. HGBP modulates to approximately 50% of compressor step capacity. Example: AALQ045 with HGBP (25% x 0.5=12.5% minimum capacity). 6 GE_AALQ_Series.indd 6

9 UNIT FEATURES, STANDARD SPECIFICATIONS & OPTIONS CONDENSER COILS Vertical & V-configuration condenser coils are corrugated fin and tube type, constructed of seamless innergrounded 3/8 dia. & (0.27 mm) thick copper tubes, mechanically bonded to aluminum fins for maximum heat transfer efficiency. As a standard on aluminum fins, ZAC provides Coil Coating, which is a single component of aluminum impregnated coating applied on the fins of heat exchanging coils. The product has been designed for Middle East climate conditions. A high chemical, abrasion and UV resistance has been proven in both laboratories and on field environment. The coating can be applied at Zamil Air Conditions factory as well as in the field for maintenance or rejuvenation purposes. The fins have full self spacing collars which completely cover each tube. The staggered tube design improves the thermal efficiency. End plates support sheet are 14 gauge galvanized steel, formed to provide structural strength. Each coil is pressure tested in the factory at not less than 450 psi air pressure. CABINET All units are of heavy gauge (G-90) galvanized steel. Steel sheet panels are zinc coated and galvanized by hot dip process of lock-forming quality conforming to ASTM A 653 commercial weight G-90 followed by backed on electrostatic polyester dry powder coat. Removable access panels are provided for easy maintenance purpose. CONTROL PANEL The control panel design is equivalent to NEMA 4 (IP55) with hinged door for easy access ensuring dust and weather- proof construction. Internal power and control wiring is neatly routed, adequately anchored and all wires identified with cable markers as per NEC standards applicable to HVAC industry. The electrical controls used in the control panel are UL approved and are reliable in operation at high ambient conditions for long periods. MICROPROCESSOR CONTROLLER A new compact electronic controller with a complete management for air cooled water chiller control capability. This controller manages the analog and digital inputs to achieve precise operation and safety function of the chiller unit. A user friendly display interface allows to access the operating condition, control set point & alarm of the unit that are clearly visible on its LCD display board. The controller is equipped with a compressor rotation operation to allow the compressor running hours to be balanced. The controller has feasibility to be connected to a supervisor network via RS485 serial line for Remote Monitoring and Remote configuration of the unit parameters. The controller consists of the following hardware: 1. Control board - complete control of function and safety operation of the compressor circuit. 2. Remote Monitoring System (optional) - Remote Monitoring & Configuration of the unit. 3. User interface Board/Remote Terminal (optional) - Provided with a simple to use push button to access the operating condition, control set point and alarm of the unit. Access of the following status on the display: 1. Water inlet / outlet Temperature 2. Compressor Status 3. Fan Status 4. Alarms 5. SI or English Unit System Protection: 1. Compressor Winding High Temperature / Overloading 2. Low / High Pressure 3. Freeze Protection 4. Sensor Error 5. Time delay - Anti recycle time for compressor 6. No Water Flow or Trip Pump condition 7 GE_AALQ_Series.indd 7

10 UNIT FEATURES, STANDARD SPECIFICATIONS & OPTIONS CONDENSER FANS Condenser fans are constructed of die cast aluminum blades/hubs with direct driven motors. All fans are statically and dynamically balanced to operate at minimum noise and vibration. Fan blades are designed with appropriate pitch angle which result in maximum airflow through the condenser coil. CONDENSER FAN MOTOR Condenser fans, the impeller and motors are so constructed to form an integral unit. All fan motors shall be three phase with class F winding insulation and ball bearings for high ambient application. These fan motors are of totally enclosed air over type (TEAO) with inherent thermal protection of automatic reset type & specially designed for outdoor applications. STANDARD CONTROL & SAFETY DEVICES MICROPROCESSOR CONTROLLER: This controller monitors the analog and digital inputs to achieve precise control & safety functions of the unit. COMPRESSOR MOTOR INTERNAL OVERLOAD: The internal overload protects the compressor and senses the motor winding temperature in case of overload. STARTERS: The starter is operated by the control circuit and provides power to the compressor motors. These devices are rated to handle safely both RLA and LRA of motors. UNDER/OVER VOLTAGE AND PHASE PROTECTION: Protects against low/over incoming voltages as well as single phasing, phase reversal and phase imbalance by de-energizing the control circuit. It is an automatic reset device, but it can be set up for manual reset. CRANKCASE HEATERS: Each compressor has crankcase heater. The compressor crankcase heater is always on when the compressors are de-energized. This protect the system against refrigerant migration, oil dilution and potential compressor failure. HIGH PRESSURE SWITCH: This switch provides an additional safety protection in the case of excessive discharge pressure. LOW PRESSURE SWITCH: This switch provides an additional safety protection in the case of unsafe low suction pressure. CIRCUIT BREAKERS: Protects against compressor/condenser fans branch circuit fault. When tripes, the breaker opens the power supply to the compressor and control circuit through auxiliary contacts. STANDARD ACCESSORIES UNIT ON-OFF SWITCH: ON-OFF switch is provided for manually switching the unit control circuit. THERMAL EXPANSION VALVE: Thermal expansion valve is used to regulate the refrigerant flow to the water cooler and maintain a constant superheat. DISPOSABLE FILTER DRIER: Refrigerant circuits are kept free of harmful moisture, sludge, acids and oil contaminating particles by the filter drier. CONTROL CIRCUIT TRANSFORMER: A factory mounted and wired control circuit transformer is furnished eliminating the need for running a separate 220 volt power supply to the unit control circuit. SIGHT GLASS: A moisture indicating sight glass installed in the liquid line. An easy-to-read color indicator shows moisture contents and provides a mean for checking the system refrigerant charge. LIQUID LINE SOLENOID VALVE: Closes when the compressor is off to prevent any liquid refrigerant from accumulating in the water cooler during the off cycle. 8 GE_AALQ_Series.indd 8

11 UNIT FEATURES, STANDARD SPECIFICATIONS & OPTIONS OPTIONS HOT GAS BYPASS SYSTEM: Hot gas bypass is provided on the lead circuit to permit operation of the system down to 50% of its unloaded capacity. Under low ambient condition, it controls temperature by eliminating the need to cycle the compressor on and off, ensuring narrow temperature swing and lengthen the life span of the compressor. WATER FLOW SWITCH: Paddle type field adjustable flow switch for water cooler circuits. Interlock into unit safety circuits so that the unit will remain off until water flow is determine. SUCTION AND DISCHARGE VALVES: To isolate the compressor in order to facilitate servicing or compressor replacement. UNIT MOUNT SPRING ISOLATORS: These housed spring assemblies have a neoprene friction pad on the bottom to prevent vibration transmission. LIQUID COOLERS: ASME code stamped liquid cooler (for models AALQ020A - AALQ070A only). PRESSURE GAUGES: Suction & discharge pressures gauges. SAFETY VALVE: This valve protects the unit against high discharge pressure in the system due to malfunction of high pressure switches. NON-FUSED MAIN DISCONNECT SWITCHES: To disconnect power supply of the unit for servicing and repair works. This as well equipped with door interlock device. CHILLER GUARD: Protect the condenser, cooler & compressor from vandalism. COOLER HEATER WRAPPED: Prevent freezing up of water on low ambient temperature. COPPER FINS/TUBES CONDENSER COILS: For seashore salty corrosive environments. COATED COPPER OR ALUMINUM FINS/TUBES CONDENSER COILS: For seashore salty corrosive environments. BMS: BACNet, Modbus, LON works and remote monitoring display. GROUND FAULT PROTECTION: Provides additional safety protection in the case of current leakage from a compressor motor. 9 GE_AALQ_Series.indd 9

12 PHYSICAL DATA UNIT SIZE COMPRESSOR AALQ010A AALQ015A AALQ020A AALQ025A AALQ030A AALQ035A AALQ040A PART NUMBER (2 ) (2 ) (2) NUMBE R OF C OMP R E S S OR S (1) (1) (4) OIL CHARGE PER COMPRESSOR, Liters % FULL LOAD CAPACITY CONTROL MOT OR OV E R LOAD P R OT E C T ION (INT E R NAL) OIL LUBR ICATION E LE C T R ONIC CE NTR IFUGAL AC T ION REFRIGERANT R-2 2 EXPANSION VALVE DEVICE THERMOSTATIC CONTR OL VOLT AG E CONDENSER 220V-1P h-50hz CONDENSER COIL Tube Dia.- Rows - Fins per inch (3) 3/ / / / / / / Total face area, Sq. ft AIR FLOW, C F M NUMBE R OF FAN/FAN DIA.,mm 1/762 1/800 2/762 2/762 2/800 2/800 4/762 FAN MOTOR R P COOLER C OOLE R P AR T NUMBE R S HE LL DIAME T E R, mm N.A. N.A LE NGTH, mm TOTAL WATER HOLDING VOLUME, Liters WAT E R IN/OUT P IP E GENERAL DIA.mm 35 REFRIGERANT CHARGE PER COMP., kg (COMP. 1/2) SOUND PRESSURE LEVEL, dba (3m./5m./10m.) 65.6/62.1/ /66.1/ /65.1/ /66.2/ /69.1/ /69.8/ /68.1/62. 8 SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 372/ / / / / / /1502 SHIPPING /OPERATING WEIGHTS (Copper coils), kg 398/ / / / / / / NOTES: 1. All compressors operate at Hz. 2. Sound pressure level : ±2dBA. 3. CU/CU option from with 12 FPI. 10 GE_AALQ_Series.indd 10

13 PHYSICAL DATA UNIT SIZE AALQ045A AALQ050A AALQ055A AALQ060A AALQ065A AALQ070A COMPRESSOR PART NUMBER (4) (1) (2) (2) (2) (4) (1) (3) (2) (2) NUMBE R OF C OMP R E S S OR S OIL CHARGE PER COMPRESSOR, Liter s / / / % FULL LOAD CAPACITY CONTROL MOTOR OVERLOAD PROTECTION (INTERNAL) ELECTRONIC OIL LUBR ICATION R E F R IG E R ANT CE NTR IFUGAL AC T ION R -22 EXPANSION VALVE DEVICE THERMOSTATIC C ONTR OL VOLT AG E 220V-1Ph-50Hz CONDENSER CONDENSER COIL Tube Dia.- Rows - Fins per inch (3) 3/ / / / / / / / Total face area, Sq. ft AIR FLOW, C F M NUMBE R OF FAN/FAN DIA.,mm 4/762 3/800 4/800 4/800 4/800 4/800 FAN MOTOR R P COOLER COOLE R P AR T NUMBE R S HE LL DIAME T E R, mm LE NGTH, mm TOTAL WATER HOLDING VOLUME, Liters WAT E R IN/OUT P IP E DIA.mm GENERAL REFRIGERANT CHARGE PER COMP., kg (COMP. 1/2) 8 12/10 10/ /10 12 SOUND PRESSURE LEVEL, dba (3m./5m./10m.) 72.7/69.2/ /71.7/ /70.9/ /72.1/ /72.4/ /72.8/67. 5 SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 1692/ / / / / /2317 SHIPPING /OPERATING WEIGHTS (Copper coils), kg 1863/ / / / / /2565 NOTES: 1. All compressors operate at Hz. 2. Sound pressure level : ±2dBA. 3. CU/CU option from with 12 FPI. 11 GE_AALQ_Series.indd 11

14 SELECTION PROCEDURE (ENGLISH UNITS) DESIGN REQUIREMENTS The following design requirements must be known to select a package chiller. 1. Required cooling capacity in tons 2. Leaving chilled water temperature in F (LCWT) 3. Chilled water flow rate in GPM 4. Chilled water cooling range in F (water in temp. - water out temp.) 5. Design ambient temperature 6. Minimum ambient temperature 7. Altitude 8. Electrical power supply SAMPLE SELECTION Select an Air Cooled Packaged chiller for the following conditions: TABLE - 2 Required system capacity is 33 tons at 54 F entering chilled water and 44 F leaving water. Design ambient temperature is 95 F. Altitude is 2000 feet above sea level. Water cooler fouling factor is Power supply: 380/415V-3Ph-50Hz STEP-1: UNIT SELECTION +0.2 Entering the capacity performance data at given LCWT and ambient temperature. AALQ035 chiller unit at sea level will produce 34.8 tons and 39.4 kw compressor 0 power input at 44 F leaving chilled water temperature with 10 F water temperature -0.2 difference and 95 F ambient temperature For the conditions required, the unit actual cooling capacity when corrected for altitude (0.99) and fouling factor (1.0). Capacity = 34.8x0.99x1.0 = 34.4 Tons, which then exceeds the requirements. So the selection is correct. STEP-2: CHILLED WATER FLOW (GPM): Water GPM = Required capacity (Tons) x 24 = 33 x 24 = 79.2 GPM Cooling Range, ΔT 10 F EVAPORATOR FOULING FACTOR (HR-FT 2-0 F/BTU) ELEVATION ABOVE SEA LEVEL (FT.) CAPACITY CORRECTION FACTOR TABLE - 1 POWER INPUT FACTOR Referring to pressure drop chart (page # 20), pressure drop 79.2 GPM = 27 fflof water for selected model. STEP-3: ELECTRICAL CAPACITY CORRECTION FACTOR TABLE - 3 ARI STANDARDS ARI-550/ ARI ARI CHILLED WATER TEMPERATURE RISE ( 0 F) Refer to electrical data at 380/415V-3Ph-50Hz, the main power wire size for AALQ035 is to be sized at a minimum circuit ampacity (MCA) of 101 Amps and the main branch protection device is to be sized at a maximum over current protection (MOCP) of 144 Amps. STEP-4: CHILLED WATER PUMP SELECTION For chilled water pump selection, add all pressure drop in the closed chilled water loop piping to the pressure drop calculated in step 2. STEP-5: LCWT CORRECTION Refer to table-3: Add correction factor to design leaving chilled water temperature (LCWT) when chilled water temperature range is above 10 F and subtract correction from design leaving chilled water temperature (LCWT) when water temperature range is below 10 F. EXAMPLE: If LCWT rise is 12.5 F, enter correction curve at 12.5 F and read the correction factor of 0.2. The corrected LCWT is = 44.2 F. CORRECTION FACTOR ( 0 F) NOTE: 1. When the chilled water temperature rise is less than 5 F, the high water flow rate will result to excessive pressure drop. In such cases, contact factory for special selection of a cooler with wider baffle spacing. 2. Please refer to water pressure drop curves. 12 GE_AALQ_Series.indd 12

15 SELECTION PROCEDURE (METRIC UNITS) DESIGN REQUIREMENTS ELEVATION ABOVE The following design requirements must be known to select a proper package chiller. SEA LEVEL (Meter) 1. Required cooling capacity in kilowatt (kw) 2. Leaving chilled water temperature in C (LCWT) 3. Chilled water flow rate in LPS 4. Chilled water cooling range in C (water in temp. - water out temp.) 5. Design ambient temperature 6. Minimum ambient temperature 7. Altitude 8. Electrical power supply SAMPLE SELECTION EVAPORATOR FOULING FACTOR (M 2-0 C/W) Select an Air Cooled Packaged chiller for the following conditions: Required system capacity is 118 kw at 12 C entering chilled water and 6 C leaving water. Design ambient temperature is 35 C. Altitude is 600 meter above sea level. Water cooler fouling factor is Power supply: 380/415V-3Ph-50Hz. STEP-1: UNIT SELECTION Entering the capacity performance data at given LCWT and ambient temperature. AALQ035 chiller unit at sea level will produce kw and 39.2 kw compressor power input at 6 C leaving chilled water temperature with 6 C water temperature difference and 35 C ambient temperature. For the conditions required, the unit actual cooling capacity when corrected for altitude (0.99) and fouling factor (1.0). Capacity = 120.2x0.99x1.0 = kw, which then exceeds the requirements. So the selection is correct. STEP-2: CHILLED WATER FLOW (LPS): Water LPS = Required capacity (kw) x = 118 x = 4.7 LPS Cooling Range, ΔT 6 C CAPACITY CORRECTION FACTOR TABLE - 2 Referring to pressure drop chart (page # 20), pressure drop 4.7 LPS = 67 kpa for selected model. STEP-3: ELECTRICAL CORRECTION FACTOR ( 0 C) TABLE - 1 POWER INPUT FACTOR CAPACITY CORRECTION FACTOR TABLE - 3 ARI STANDARDS ARI-550/ ARI ARI CHILLED WATER TEMPERATURE RISE ( 0 C) Refer to electrical data at 380/415V-3Ph-50Hz, the main power wire size for AALQ035 is to be sized at a minimum circuit ampacity (MCA) of 101 Amps and the main branch protection device is to be sized at a maximum over current protection (MOCP) of 144 Amps. STEP-4: CHILLED WATER PUMP SELECTION For chilled water pump selection, add all pressure drop in the closed chilled water loop piping to the pressure drop calculated in step 2. STEP-5: LCWT CORRECTION Refer to table-3: Add correction factor to design leaving chilled water temperature (LCWT) when chilled water temperature range is above 6 C and subtract correction from design leaving chilled water temperature (LCWT) when water temperature range is below 6 C. EXAMPLE: If LCWT rise is 7.4 C, enter correction curve at 7.4 C and read the correction factor of The corrected LCWT is 6 C+0.11 = 6.11 C. NOTE: 1. When the chilled water temperature rise is less than 3 C, the high water flow rate will result to excessive pressure drop. In such cases, contact factory for special selection of a cooler with wider baffle spacing. 2. Please refer to water pressure drop curves. 13 GE_AALQ_Series.indd 13

16 PERFORMANCE DATA (ENGLISH UNITS) LEAVING CHILLED WATER TEMP. (LCWT) 46 0 F 48 0 F 50 0 F UNIT SIZE CAP. (Tons) 95 0 F AMBIENT TEMPERATURE F AMBIENT TEMPERATURE F AMBIENT TEMPERATURE F AMBIENT TEMPERATURE COMP. kw EER WATER FLOW (GPM) CAP. (Tons) COMP. kw EER AALQ 010A AALQ 015A AALQ 020A AALQ 025A AALQ 030A AALQ 035A AALQ 040A AALQ 045A AALQ 050A AALQ 055A AALQ 060A AALQ 065A AALQ 070A AALQ 010A AALQ 015A AALQ 020A AALQ 025A AALQ 030A AALQ 035A AALQ 040A AALQ 045 A AALQ 050 A AALQ 055 A AALQ 060 A AALQ 065 A AALQ 070 A AALQ 010 A AALQ 015 A AALQ 020 A AALQ 025 A AALQ 030A AALQ 035 A AALQ 040 A AALQ 045 A AALQ 050A AALQ 055 A AALQ 060 A AALQ 065 A AALQ 070A WATER FLOW (GPM) CAP. (Tons) COMP. kw EER WATER FLOW (GPM) CAP. (Tons) COMP. kw EER WATER FLOW (GPM) LEGEND: kw - C ompressor power input GP M - Gallons Per Minute EE R - Energy Efficiency Rati o NOTES: 1. Packaged chillers are rated in accordance with AHRI 550/ Performance data are based on 10 0 F water range in evaporator. 3. Ratings are based on (hr-ft 2-0 F/Btu) fouling factor for evaporator. 4. Direct interpolation is permissible. Do not extrapolate. 5. kw power input is for compressor only. 6. EER for entire unit. Refer to electrical data for fan kw. 14 GE_AALQ_Series.indd 16

17 PERFORMANCE DATA (METRIC UNITS) LEAVING CHILLED WATER TEMP. (LCWT) 4 0 C 5 0 C 6 0 C UNIT SIZE CAP. (kw) 35 0 C AMBIENT TEMPERATURE 40 0 C AMBIENT TEMPERATURE 46 0 C AMBIENT TEMPERATURE 50 0 C AMBIENT TEMPERATURE COMP. kw COP WATER FLOW (LPS) CAP. (kw) COMP. kw COP AALQ 010A AALQ 0 15A AALQ 020 A AALQ 025 A AALQ 030A AALQ 0 35A AALQ 040A AALQ 045A AALQ 050A AALQ 055 A AALQ 060A AALQ 065A AALQ 070A AALQ 010A AALQ 015A AALQ 020A AALQ 025A AALQ 030A AALQ 035A AALQ 040 A AALQ 045A AALQ 050A AALQ 055A AALQ 060A AALQ 065A AALQ 070A AALQ 010A AALQ 015A AALQ 020A AALQ 025A AALQ 030A AALQ 035A AALQ 040A AALQ 045A AALQ 050A AALQ 055A AALQ 060A AALQ 065A AALQ 070A WATER FLOW (LPS) CAP. (kw) COMP. kw COP WATER FLOW (LPS) CAP. (kw) COMP. kw COP WATER FLOW (LPS) LEGEND: kw - Compressor power input LP S - Liters Per Second CO P - Coefficient of Performanc e NOTES: 1. Packaged chillers are rated with in accordance. 2. Performance data are based on 6 0 C water range in evaporator. 3. Ratings are based on (m 2-0 C/W) fouling factor for evaporator. 4. Direct interpolation is permissible. Do not extrapolate. 5. kw power input is for compressor only. 6. COP for entire unit. Refer to electrical data for fan kw. 15 GE_AALQ_Series.indd 17

18 PERFORMANCE DATA (METRIC UNITS) LEAVING CHILLED WATER TEMP. (LCWT) 7 0 C 8 0 C 10 0 C UNIT SIZE CAP. (kw) 35 0 C AMBIENT TEMPERATURE 40 0 C AMBIENT TEMPERATURE 46 0 C AMBIENT TEMPERATURE 50 0 C AMBIENT TEMPERATURE COMP. kw COP WATER FLOW (LPS) CAP. (kw) COMP. kw COP AALQ 010A AALQ 015A AALQ 0 20A AALQ 0 25A AALQ 030A AALQ 035A AALQ 0 40A AALQ 045A AALQ 050A AALQ 055A AALQ 060A AALQ 065A AALQ 0 70A AALQ 0 10A AALQ 015A AALQ 020A AALQ 0 25A AALQ 0 30A AALQ 035A AALQ 040 A AALQ 045A AALQ 050A AALQ 055A AALQ 060A AALQ 065A AALQ 070A AALQ 010A AALQ 015A AALQ 020A AALQ 025A AALQ 030A AALQ 035A AALQ 040A AALQ 045A AALQ 050A AALQ 055A AALQ 060A AALQ 065A AALQ 070A WATER FLOW (LPS) CAP. (kw) COMP. kw COP WATER FLOW (LPS) CAP. (kw) COMP. kw COP WATER FLOW (LPS) LEGEND: kw - C ompressor power input LP S - Liters Per Second CO P - Coefficient of Performanc e NOTES: 1. Packaged chillers are rated in accordance. 2. Performance data are based on 6 0 C water range in evaporator. 3. Ratings are based on (m 2-0 C/W) fouling factor for evaporator. 4. Direct interpolation is permissible. Do not extrapolate. 5. kw power input is for compressor only. 6. COP for entire unit. Refer to electrical data for fan kw. 16 GE_AALQ_Series.indd 18

19 ELECTRICAL DATA UNIT SIZE Nominal (V-Ph-Hz) SUPPLY VOLTAGE COMPRESSOR TYPE-1 COMPRESSOR TYPE-2 CONDENSER FAN MOTORS Min. Max. MCA MOCP Qty. RLA (each) LRA (each) CB Poles MTA CB Qty. Qty. RLA (each) LRA (each) CB Poles MTA CB Qty. Qty. FLA (each) Total kw FCA CB (Qty.) CRANKCASE HEATER Volts Total Watts Total Amps AALQ010A 380/ AALQ015A 380/ AALQ020A 380/ AALQ025A 380/ AALQ030A 380/ AALQ035A 380/ AALQ040A 380/ AALQ045A 380/ AALQ050A 380/ AALQ055A 380/ AALQ060A 380/ AALQ065A 380/ AALQ070A 380/ LEGEND: MC A - Minimum Circuit Ampacity per NEC MOCP - Maximum Over Current Protectio n RL A - Rated Load Amps LR A - Locked Rotor Amps CB - C ircuit Breaker MTA - Must Trip Amps FL A - Full Load Amps FC A - Total Fan Circuit Amps NOTES: 1 circuit breaker. 2. The compressor crankcase heaters must be energized for 12 hour before the unit is initally started or after a prolonged power disconnection. 3. All Field Wiring must be in accordance with NEC and local standards. 4. Minimum and Maximum unit supply voltage are shown in the tabulated data above. See also note. 5. The + / - 10% voltage variation from the nominal is accepted for short time and not permanent. 6. The maximum main incoming wire size is 500MCM. On units having MCA greater than the ampacity of 500MCM wire, two parallel wire per phase shall be supplied to a two terminal block. 17 GE_AALQ_Series.indd 19

20 WATER SIDE PRESSURE DROP PRESSURE DROP (FT. OF WATER) FLOW RATE - GPM 1500 MODEL No. CURVE No. Minimum GPM Maximum GPM AALQ010A AALQ015A AALQ020A AALQ025A AALQ030A AALQ035A AALQ040A AALQ045A AALQ050A AALQ055A AALQ060A AALQ065A AALQ070A CONVERSION FACTOR: GPM = Liters per second. Feet of water = Kilo Pascal (kpa). NOTE: If an application requires certain water flow rate outside these limits, please check with your nearest dealer/sales office. 18 GE_AALQ_Series.indd 20

21 DIMENSIONS AALQ010A & AALQ015A 1025 DIMENSIONS MODEL A AALQ010A 100 AALQ015A 275 A AALQ020A, AALQ025A, AALQ030A & AALQ035A DIMENSIONS C 246 D A 2287 B NOTE: 1. All dimensions are in millimeters, unless otherwise specified. 2. Cooler dimensions are subject to change without notice. Final dimension will be provided upon placement. 19 GE_AALQ_Series.indd 21 3/26/12 3:32 PM

22 DIMENSIONS AALQ050A 275 B D AALQ040A, AALQ045A, AALQ055A, AALQ060A, AALQ065A & AALQ070A DIMENSIONS C 260 A NOTE:1. All dimensions are in millimeters, unless otherwise specified. 2. Cooler dimensions are subject to change without notice. Final dimension will be provided upon placement. 20 GE_AALQ_Series.indd 22 3/26/12 3:32 PM

23 TYPICAL SCHEMATIC WIRING DIAGRAM 21 GE_AALQ_Series.indd 23 3/26/12 3:32 PM

24 MICROPROCESSOR CONTROLLER CONTROLLER SEQUENCE OF OPERATION For initial start-up, the following condition must be met: All power supplied to the unit shall be continuously energized for 12 hours. All safety conditions are satisfied. Chilled water pump is running normal and chilled water flow switch contact is closed. Customer control or remote ON/OFF is switch to run mode, if any. Staging ON and OFF sequence is accomplished based on controlled water temperature. The controller works to maintain the required demand as constant as possible. Below sequence of operation belongs to chiller unit with 2 scroll compressors. For 4 scroll compressors chiller unit the operation will be the same. Only that the capacity change to 25% per compressor. For single scroll compressor unit the capacity change to 100%. COMPRESSOR STAGE - ON SEQUENCE If the water temperature is above the temperature set point: The compressor with less running hours will start, and the unit is now at the 50% capacity. Affer such interval of time, and if the water temperature is still high compared to the temperature set point, the second compressor will start. The unit now is at 100% capacity. COMPRESSOR STAGE - OFF SEQUENCE Assume that the 2 compressors are running (capacity is at 100%). Affer such interval of time, if the water temperature is decreases or below the temperature set point the compressor with more running hours will off. Now the unit is at 50% capacity. Affer such interval of time, if water temperature still below the set point temperature, then second compressor will off. FAN - ON/OFF The fan will switch ON & OFF together with the compressor ON and OFF operation respectively. 22 GE_AALQ_Series.indd 24 3/26/12 3:32 PM

25 APPLICATION GUIDELINES INTRODUCTION These guidelines should be considered when designing systems and their installation utilizing GE AALQ series liquid chillers. Stable operation, performance and reliability of units is offen dependent upon proper compliance with these recommendations. When any application varies from these guidelines, it should be referred with GE Air Conditioners for specific recommendations. UNIT SELECTION/SIZING Unit selection procedure and capacities are provided in this catalog for proper selection. The GE electronic selection program may also be utilized for this purpose. Over sizing chillers beyond a maximum limit of 5 10 % in order to assure adequate capacity or considering future expansions is not recommended. Over sizing adversely affects the operating efficiency due to erratic system operation and excessive compressor cycling which also results in reduced compressor life. It should be noted that, units operate more efficiently when fully loaded rather than larger equipment operating at partial capacities. In addition, an oversized unit is usually more costly to purchase, install and operate. FOULING FACTOR AND WATER REQUIREMENT The tabulated performance data provided in this catalog are based on a fouling factor of hr-ff - F/Btu ( m 2 - C/W). As fouling factor is increased, unit capacity decreases and power input increases. For unit selection at other fouling factors, apply appropriate correction factor from the table provided in this catalog. These chillers are suitable for operation with well maintained water systems. Using unclean and untreated water may result in scale and deposit formation causing reduced cooler efficiency or heat transfer and corrosion or pitting leading to possible equipment damage. EFFECT OF ALTITUDE ON UNIT CAPACITY The tabulated performance data provided in this catalog are for use at or near sea level altitude application. At altitudes substantially above sea level, the decreased air density will reduce condenser capacity and therefore unit capacity. For unit selection at these higher altitudes, apply appropriate correction factor from the table provided in this catalog. HIGH AMBIENT CONSIDERATION These chillers are designed for year round operation over a range of ambient temperatures. As a standard, these chillers can start and operate satisfactorily up to 122 F (50 C) ambient temperature at rated nominal voltage. WATER FLOW RATES AND COOLER PRESSURE DROP The maximum and minimum water flow rates for all unit models and the pressure drop chart are provided in this catalog. The design water flow rate must be within this range. Design flow rates below the minimum limits will result in laminar flow causing freeze-up problems, stratification and poor control and flow rates beyond the maximum limits cause excessive pressure drop and severe tube erosion. During unit operation, water flow rate must not vary more than ± 5% from the design flow rate. The water flow switch should be calibrated accordingly. COOLER FLUID TEMPERATURES RANGE Unit can start and pull down from 95 F (35 C) entering fluid temperature. The design leaving chilled fluid temperature (LCWT) range as mentioned earlier in the tabulated performance data 40 is to 50 F. The design entering chilled fluid temperature range is 50 to 60 F. The design cooler temperature drop (ΔT) range 5 is to 15 F. The tabulated performance data provided in this catalog is based on a chilled water temperature drop of 10 F. Units may be operated at any desired temperature drop within the range of 5 to 15 F as long as the temperature and flow limits are not violated and appropriate correction factors are applied on the capacity and power input. The GE electronic selection program can be very handy in selecting equipment at different temperature drops. It should be noted that temperature drop outside the aforesaid range is not permitted as it is beyond the optimum range of control and could adversely affect the functioning of microprocessor controller and may also prove to be detrimental for the equipment. 23 GE_AALQ_Series.indd 25 3/26/12 3:32 PM

26 APPLICATION GUIDELINES COOLER FREEZE PROTECTION If the unit is located in an area where ambient temperatures fall below 32 F (0 C), cooler protection in the form of Ethylene Glycol Solution is required to protect the cooler and fluid piping from low ambient freeze-up. This glycol solution must be added to the water system loop to bring down the freezing point of water to a difference of 15 F (8.3 C) below minimum operating ambient temperature. Using this glycol solution causes a variation in unit performance, flow rate and pressure drop. Please contact the nearest GE representative for support when using Glycol Solution with Chiller. MULTIPLE CHILLER ARRANGEMENT OR PLANT CONFIGURATION A multiple chiller system has two or more chillers connected by parallel or series piping to a common distribution system. Multiple chiller arrangements offer the advantage of operational flexibility, standby capacity and less disruptive maintenance. Also, they offer some standby capacity if repair work must be done on a chiller from a set of duty chillers. Starting in-rush current is reduced, as well as power costs at partial-load conditions. A multiple chiller arrangement should be provided if the system load is greater than a single chiller capacity, standby capability is desired, large temperature drop (greater than 15 F) is desired or application calls for splitting the total capacity for better part load operation. In designing a multiple chiller plant, units of same size should be preferred over different sizes to facilitate balanced water flow. It is mandatory that cooler flow rates must be balanced to ensure proper flow to each chiller based on its respective capacity. As mentioned above, two basic multiple chiller systems are used: parallel and series chilled water flow. GE recommends the parallel arrangement for design temperature drops (ΔT) up to 15 F and the series arrangement beyond that i.e., 16 to 20 F. Complete design details on these parallel and series chilled water flow arrangements can be found in the ASHRAE handbooks and other design literature which should be referred by the designer in preparing his detailed designs. PIPING ARRANGEMENTS AND PLANT LAYOUT Our chillers are suitable for incorporating in Two Pipe single temperature systems or Four Pipe independent load systems. The system piping circuit (load distribution circuit) should be basically parallel piping either Direct Return or Reverse Return system with a good pumping arrangement. The method of circuiting and pumping is a judgment decision by the designer. The designer must weigh the pros and cons of cost, nature of load and configuration of building, energy economics, flexibility, installation requirements and others to determine the best arrangement for his project. In all cases, it must be ensured that the design water flow is constantly maintained through the chillers at all stages of operation. UNIT LOCATION AND INSTALLATION These chillers are designed for outdoor installation and can be installed at ground level or on a suitable roo op location. In order to achieve good operation, performance and trouble-free service, it is essential that the proposed installation location and subsequent installing procedures meet the following requirements: The most important consideration while deciding upon the location of air cooled chillers is the provision for supply of adequate ambient air to the condenser and removal of heated discharge air from the condenser. This is accomplished by maintaining sufficient clearances which have been specified in this Catalog around the units and avoiding obstructions in the condenser air discharge area to prevent the possibility of warm air circulation. Further, the condenser fans are propeller type and are not recommended for use with ductwork or other hindrances in the condenser air stream. Where these requirements are not complied, the supply or discharge airflow restrictions or warm air recirculation will cause higher condensing temperatures resulting in poor unit operation, higher power consumption and possible eventual failure of equipment. The unit s longitudinal axis should be parallel to the prevailing wind direction in order to ensure a balanced air flow through the condenser coils. Consideration should also be given to the possibility of down-drafts caused by adjacent buildings, which may cause recirculation or uneven unit airflow. For locations where significant cross winds are expected, an enclosure of solid or louver type is recommended to prevent wind turbulence interfering with the unit airflow. When units are installed in an enclosure, the enclosure height should not exceed the height of the unit. 24 GE_AALQ_Series.indd 26 3/26/12 3:32 PM

27 APPLICATION GUIDELINES The location should be selected for minimum sun exposure and away from hot air sources, steam, exhaust vents and sources of airborne chemicals that could attack the condenser coils and steel parts of the unit. Avoid locations where the sound output and air discharge from the units may be objectionable. If the location is an area which is accessible to unauthorized persons, steps must be taken to prevent access to the unit by means of a protective fence. This will help to prevent the possibility of vandalism, accidental damage or possible harm caused by unauthorized removal of panels or protective guards exposing rotating or high voltage components. The unit must be installed on a ONE-PIECE, FLAT and LEVELLED {within 1/2 (13 mm) over its length and width} / CONCRETE BASE that extends fully to support the unit. The carrying or supporting structure should be capable of handling complete operating weight of the unit as given in the Physical Data tables in this Catalog. For ground level installations, it must be ensured that the concrete base is stable and does not settle or dislocate upon installation of the unit which can strain the refrigerant lines resulting in leaks and may also cause compressor oil return problems. It is recommended that the concrete slab is provided with appropriate footings. The slab should not be connected to the main building foundation to avoid noise and vibration transmission. For rooftop installations, choose a place with adequate structural strength to safely support the entire operating weight of the unit. The unit shall be mounted on a concrete slab similar to ground installations. The roof must be reinforced for supporting the individual point loads at the mounting isolator locations. It must be checked and ensured that the concrete base is perfectly horizontal and levelled, especially if the roof has been pitched to aid in water removal. It should be determined prior to installation if any special treatment is required to assure a levelled installation else it could lead to the above mentioned problems. Vibration isolators are necessary for installing these chillers in order to minimize the transmission of vibrations. The two types of vibration isolators generally utilized for mounting these units are Neoprene Pads and Spring Isolators. Neoprene Pads are recommended for ground level normal installations jobs where vibration isolation is not critical and job costs must be kept to a minimum. Spring Isolators are recommended for ground level installations which are noise- sensitive areas or exposed to wind loads and all roof top installations. For critical installations (extremely noise and vibration sensitive areas), follow the recommendations of structural and acoustical consultants. Based on the specific project requirements, choose the type of vibration isolators best suited for the application. Carefully select the vibration isolators models / configuration based on the respective point loads and place each mount in its correct position following the Load Distribution Data and Mounting Drawings provided in this Catalog. Refer to the Schematic Mounting Layout drawings provided in the IOM manual of these chillers for further details in this regard. COOLER PIPING CONNECTIONS The following pertinent guidelines are served to ensure satisfactory operation of the units. Failure to follow these recommendations may cause improper operation and loss of performance, damage to the unit and difficulty in servicing and maintenance: Water piping must be connected correctly to the unit i.e., water must enter from the inlet connection on the cooler and leave from the outlet connection. A flow switch must be installed in the field piping at the outlet of the cooler (in horizontal piping) and wired back to the unit control panel using shielded cable. There should be a straight run of piping of at least five pipe diameters on either side of the flow switch. Paddle type flow switches can be obtained from GE which are supplied as optional items. The chilled water pump(s) installed in the piping system should discharge directly into the unit cooler. The pump(s) may be controlled external to the unit - but an interlock must be wired to the unit control panel (as shown in the wiring diagram) so that the unit can start only upon proof of pump operation. Flexible connections suitably selected for the fluid and pressure involved should be provided as mandatory in order to minimize transmission of vibrations to the piping / building as some movement of the unit can be expected during normal operation. The piping and fittings must be separately supported to prevent any loading on the cooler. The cooler must be protected by a strainer, preferably of 20 mesh, fitted as close as possible to the liquid inlet connection, and provided with a means of local isolation. 25 GE_AALQ_Series.indd 27 3/26/12 3:32 PM

28 APPLICATION GUIDELINES Thermometer and pressure gauge connections should be provided on the inlet and outlet connections of each cooler. Pressure gauges are recommended to check the water pressure before and after the cooler and to determine if any variations occur in the cooler and system. When installing pressure taps to measure the amount of pressure drop across the water side of the cooler, the taps should be located in the water piping a minimum of 24 inches downstream from any connection (flange etc.) but as near to the cooler as possible. Drain and air vent connections should be provided at all low and high points in the piping system to permit complete drainage of the cooler and piping as well as to vent any air in the pipes. Hand shut-off valves are recommended for use in all lines to facilitate servicing. The system water piping must be flushed thoroughly before connecting to the unit cooler. The cooler must not be exposed to flushing velocities or debris released during flushing. It is recommended that a suitably sized bypass and valve arrangement is installed to allow flushing of the piping system. The bypass can be used during maintenance to isolate the cooler without disrupting flow to other units. The following is a suggested piping arrangement at the chiller for single unit installations. For multiple chiller installations, each unit should be piped as shown: OUT IN Isolating Valve - Normally Open Isolating Valve - Normally Closed Pressure tapping Flow Switch Balancing Valve Connection ( anged / Victaulic) Flow meter Pipe work Strainer Flexible connection 26 GE_AALQ_Series.indd 28 3/26/12 3:32 PM

29 APPLICATION GUIDELINES CHILLED FLUID VOLUME REQUIREMENT The volume of water in a piping system loop is critical to the smooth and proper operation of a chilled water system. If sufficient volume of water is not there in the system, the temperature control can be lost resulting in erratic system operation and excessive compressor cycling. Therefore, to prevent this effect of a Short Water Loop ensure that total volume of water in the piping system loop equals or exceeds 3 Gallons per Nominal Ton of cooling capacity for standard air conditioning applications and 6 Gallons per Nominal Ton of cooling capacity for process cooling jobs where accuracy is vital and applications requiring operation at very low ambient temperatures and low loading conditions. For example, chiller model AALQ050 operating with a design water flow rate of 120 GPM for a standard air conditioning application would require 50 (Nom. Cap.) x 3 = 150 Gallons of water in the piping system loop. To achieve the aforementioned water volume requirements, it may be necessary to install a tank in the piping system loop to increase the volume of water in the system and therefore, reduce the rate of change of return water temperature. This tank should be provided on the return water side to the chiller and the tank should be baffled to ensure that there is no stratification and the entering stream thoroughly mixes with the tank water. See recommended tank design schematics below: TANK SCHEMATIC 27 GE_AALQ_Series.indd 29 3/26/12 3:32 PM

30 RIGGING INSTRUCTIONS ATTENTION TO RIGGERS Hook rigging sling thru holes on the lifting plates, as shown below. Lifting plates or holes in base rail are centered around the unit center of gravity. Center of gravity is not unit center line. Ensure center of gravity aligns with the main lifting point before lifting. Use spreader bar when rigging, to prevent the slings from damaging the unit. CAUTION All panels should be in place when rigging. Care must be taken to avoid damage to the coils during handling. Insert packing material between coils & slings as necessary. 28 GE_AALQ_Series.indd 30 3/26/12 3:32 PM

31 INSTALLATION CLEARANCE WALL FIGURE - 1 STRAIGHT WALL FIGURE - 2 CORNER WALL NOTE: 1. All dimensions are in mm. 29 GE_AALQ_Series.indd 31 3/26/12 3:32 PM

32 MOUNTING LOCATION MODELS: AALQ010A - AALQ015A B A MODELS: AALQ020A - AALQ035A MODELS: AALQ040A - AALQ070A NOTE: All dimensions are in mm. Tolerance: ±2mm. 30 GE_AALQ_Series.indd 32 3/26/12 3:32 PM

33 LOAD DISTRIBUTION, KG. (ALUMINUM CONDENSER COIL) MODEL No. R1 R2 R3 R4 AALQ010 A AALQ015 A AALQ020 A AALQ025 A AALQ030 A AALQ035 A AALQ040 A AALQ045 A AALQ050 A AALQ055 A AALQ060 A AALQ065 A AALQ070 A LOAD DISTRIBUTION, KG. (COPPER CONDENSER COIL) MODEL No. R1 R2 R3 R4 AALQ010 A AALQ015 A AALQ020 A AALQ025 A AALQ030 A AALQ035 A AALQ040 A AALQ045 A AALQ050 A AALQ055 A AALQ060 A AALQ065 A AALQ070 A GE_AALQ_Series.indd 33 3/26/12 3:32 PM

34 Middle East Air Conditioners Co. Ltd. Middle East Air Conditioners Co. Ltd. P.O. Box Dammam KSA Kingdom of Saudi Arabia Tel: Fax: GE_AALQ_Series.indd 34 3/26/12 3:32 PM