Product Data 17EX Externally Geared Centrifugal Liquid Chiller 1500 to 2250 Nominal Tons (5280 to 7910 kW) Carrier’s Externally Geared 17EX Open Drive Centrifugal Liquid Chillers operate with environmentally safe HFC-134a. These chillers combine industrial quality with superior efficiency in a packaged design to minimize system costs.
Application flexibility/two-stage compressor — By providing a wide assortment of compressor and gear arrangements as well as 2 stages of compression, the 17EX chiller is an efficient, quality package ideally suited for domestic chilled water, export chilled water, brine chilling, and ice making applications. The 17EX unit can be used to chill either water or brine. The data in this book applies to either application.
Model number nomenclature 17EX 48 57 583 J FH 66 1 – Special Order Code – – Standard S – Special Order Model Description 17EX – Open Drive Centrifugal Liquid Chiller Waterbox Code 1 – Marine Waterbox Cooler/ Marine Waterbox Condenser 2 – Marine Waterbox Cooler/ NIH Waterbox Condenser 3 – NIH Waerbox Cooler/ Marine Waterbox Condenser 4 – NIH Waterbox Cooler/ NIH Waterbox Condenser Cooler Size 45, 48 Condenser Size 55, 57 Compressor Size 531 through 599 Motor Voltage 64 – 2400-3-60 65 – 3300-3-60
Features/Benefits (cont) HEAT EXCHANGERS • ASME stamp on both refrigerant and water-sides of heat exchangers for increased reliability • Optional marine waterboxes eliminate disassembly of field piping, saving on service time during tube cleaning • High-performance internally and externally enhanced tubes provide excellent heat transfer efficiencies • Closely spaced intermediate support sheets prevent tube sagging and/or vibration • Double-grooved tube sheets, with tubing rolled and expanded at both end she
The heat exchangers feature: Pressure-tested vessels — Each heat exchanger (water-side) is hydrostatically tested at 150% of design pressure. The entire chiller assembly is pneumatically burst-tested at 125% of design pressure and then subjected to a standing vacuum test. This increases unit reliability and ensures safe chiller operation. ASME certified construction — ASME “U” stamp and nameplate on both the refrigerant and water-sides of the chiller for safety, reliability, and long life.
Features/Benefits (cont) TYPICAL 17EX REFRIGERATION CYCLE Heat supplies the energy required for boiling and is obtained from the water (or brine) flowing through the cooler tubes. When heat is removed, the chilled water can then be used for air conditioning or for process liquid cooling. After removing heat from the water, the refrigerant vapor passes through the compressor’s first stage, is then compressed, and moves into the compressor’s second stage.
TYPICAL OPEN-DRIVE COMPRESSOR COMPONENTS 1 2 3 4 5 6 7 8 9 10 11 — — — — — — — — — — — LEGEND Variable Inlet Guide Vanes (Hidden) First-Stage Impeller Second-Stage Impeller Front Journal Bearing Thrust Bearing Assembly Seal Oil Supply Reservoir Shaft Displacement Detector Rear Journal Bearing Contact Seal Compressor Oil Pump Compressor Oil Cooler/Filter 7
Options and accessories ITEM Thermal Insulation Multi-Pass Heat Exchangers Automatic Hot Gas Bypass Controls Option Module .028 or .035-in.
Chiller components 1 40 2 3 4 5 6 7 8 9 10 11 12 13 14 39 38 37 36 35 15 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 17EX WITH EXTERNAL GEAR (SPEED INCREASER) LEGEND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 — — — — — — — — — — — — — — — — — — — — — — Condenser Cooler Suction Pipe Compressor Suction Elbow Guide Vane Actuator Condenser Discharge Pipe Compressor Discharge Elbow Two-Stage Compressor Economizer Gas Line to Compressor Compressor H
Physical data RIGGING AND OPERATING WEIGHTS 17EX HEAT EXCHANGER, ECONOMIZER/STORAGE VESSEL, PIPING, AND PUMPOUT UNIT WEIGHTS* COOLERS SIZE† 45 48 COOLER TOTAL WEIGHT Dry** lb kg 25,032 11 355 28,153 12 770 CONDENSER SIZE† 55 57 COOLER CHARGE Operating†† lb kg 30,098 13 652 34,866 15 815 Refrigerant lb kg 2,060 934 2,540 1 152 CONDENSER TOTAL WEIGHT Dry** Operating†† lb kg lb kg 20,725 9 401 25,598 11 611 22,446 10 182 27,971 12 688 Water lb kg 3,006 1 364 4,173 1 893 ECONOMIZER/ STORAGE VESSEL E
RIGGING AND OPERATING WEIGHTS (cont) ADDITIONAL CONDENSER WEIGHTS* COMPONENT HEAT EXCHANGER SIZE WATERBOX TYPE NUMBER OF PASSES 55, 57 NIH NIH NIH Marine Marine 1 1 2 2 2 CONDENSER DESIGN MAXIMUM WATER PRESSURE psig kPa 150 1034 300 2068 300 2068 150 1034 300 2068 LEGEND NIH — Nozzle-In-Head *When using a chiller configuration other than 2-pass, NIH waterboxes with 150 psig (1034 kPa) covers, add the weights listed in this table to the appropriate weights in the 17EX Heat Exchanger, Economizer/Stor
Dimensions 22'-10" (6960) 12'-5" (3785) DIAM 2'-6 1/2" (775) 5) 1'-0" (30 2'-0" (610) MINIMUM SERVICE AREA 11'-7" (3531) 17'-2" (5232) NOZZLE SIZES HEAT EXCHANGER 45,48 55,57 NOZZLE TYPE Marine NIH Marine NIH NOZZLE SIZES (in.) 1 20 18 — — Cooler Passes 2 14 14 — — LEGEND NIH — Nozzle-In-Head *In conformance with ASA B36.10 (American Standards Association). NOTES: 1. Certified drawings available upon request. 2.
Performance data Computerized ratings Since Carrier’s 17EX chiller has numerous component combinations and can meet a wide variety of required operating conditions, it is impractical to provide tabular performance information. Tabulated performance ratings predict “typical” chiller performance. Actual chiller performance may vary significantly at actual operating conditions and as chiller components are optimized around these conditions.
Electrical data (cont) Compressor motor controllers Capacitors and power factors Compressor motors, as well as controls and accessories, require starting equipment systems specifically designed for 17 series chillers. See starting equipment publications or consult Carrier regarding design information for selection of controllers. Power factor considerations may indicate the need to use capacitors. Properly sized capacitors improve power factors, especially at part-load.
Application data Range of application SHEET FOAM INSULATION The 17EX chiller is designed for standard water (or brine) chilling applications using HFC-134a. ASME stamping All 17EX heat exchangers are constructed in accordance with ASHRAE 15 (American Society of Heating, Refrigeration, and Air Conditioning Engineers) Safety Code for Mechanical Refrigeration (latest edition).
Application data (cont) Vent and drain connections Relief devices All vent and drain connections are found in the waterbox shell. Vent and drain connection size is 1-in. FPT. Provide the high points of the chiller piping system with vents and the low points with drains. If shutoff valves are provided in the main water pipes near the unit, a minimum amount of system water is lost when the heat exchangers are drained.
RELIEF-VALVE DISCHARGE PIPING RELIEF VALVE LOCATION Cooler Economizer/Storage Vessel Pumpout Unit Condenser REQUIRED C FACTOR lb air/min. kg air/sec. 228.5 1.73 84.3 0.64 1.5 0.01 NOMINAL OUTLET PIPE SIZE (in.) 11/4 FPT 11/4 FPT 3/8 in. Male Flare MPT RATED RELIEF PRESSURE psig kPa 225 1551 225 1551 385 2655 NOTES: 1.
Application data (cont) HEAT EXCHANGER MINIMUM/MAXIMUM FLOW RATES* (cont) ENGLISH (Gpm) FRAME SIZE 5 CONDENSER SIZE 55 57 1 PASS Min 3660 4511 2 PASS Max 14,640 18,042 Min 1830 2255 3 PASS Max 7320 9021 Min N/A N/A Max 462 569 Min N/A N/A Max N/A N/A SI (L/sec) FRAME SIZE 5 CONDENSER SIZE 55 57 1 PASS Min 231 285 2 PASS Max 924 1138 Min 115 142 3 PASS Max N/A N/A *Flow rates are based on .025 in. wall tubing in the condenser. Minimum flow based on tube velocity of 3 ft/sec (0.
CHILLER CONTACT SURFACES (cont) SOLEPLATE ISOLATION 0'-1 1/2" (38.1) TYPICAL ISOLATION 1'-5" (431.8) 7/8-9UNC-4 HOLES FOR JACKING SCREWS 2'-4" (711) 2'-1" (635) 0'-1 1/2" (38.1) 1'-2" (355.6) FIELD-INSTALLED ACCESSORY ISOLATION SOLEPLATE DETAIL SECTION A-A NOTES: 1. Dimensions in ( ) are in millimeters. 2. Accessory Soleplate Package includes 4 soleplates, 16 jacking screws and leveling pads. Requires isolation package. 3. Jacking screws to be removed after grout has set. 4.
Application data (cont) NOZZLE ARRANGEMENTS NOZZLE-IN-HEAD WATERBOXES COOLER WATERBOX Arr. Code 8 5 A 1 5 8 B 7 9 C 2 4 6 D 7 6 E 3 4 9 F CONDENSER WATERBOX Arr. Pass In Out Code 11 2 P 1 2 11 Q 10 12 R 2 1 3 S Pass In Out NOTES: 1. The vents for these waterboxes, located in the covers are 1 in. FPT at the top of each box, and the drains are 1 in. FPT, at the bottom. 2. Victaulic connections are standard 3. Flanged waterbox connections are optional.
Controls Microprocessor controls Microprocessor controls provide the safety, interlock, capacity control, and indications necessary to operate the chiller in a safe and efficient manner. Control system The microprocessor control on each Carrier centrifugal system is factory mounted, wired, and tested to ensure chiller protection and efficient capacity control.
Controls (cont) MICROPROCESSOR CONTROL CENTER CONTROL CENTER WITH OPTIONS (FRONT VIEW) LEGEND 1 — Processor Module (PSIO).
LOCAL INTERFACE DEVICE (LID) TYPICAL DISPLAY PANELS 17EX CHLR STATUS01 POINT STATUS Control Mode Run Status Occupied? Alarm State Chiller Start/Stop Base Demand Limit Active Demand Limit Compressor Motor: Lead Current Amps Target Guide Vane Pos Actual Guide Vane Pos NEXT Default Display — Displays information most commonly required for chiller operating logs. Two-line system status messages inform the operator of mode of operation or any alert or alarm messages.
Controls (cont) LOCAL INTERFACE DEVICE (LID) TYPICAL DISPLAY PANELS (cont) 17EX CHLR ATTACH TO NETWORK DEVICE CONTROLLER IDENTIFICATION EQUIPMENT CONFIGURATION ALARM ALARM HISTORY HISTORY CONTROLS TEST EQUIPMENT SERVICE LID CONFIGURATION TIME AND DATE CONTROL ALGORITHM STATUS LOG OUT OF DEVICE NEXT PREVIOUS SERVICE 17EX CHLR ALARM HISTORY Alert - 6 at 14:05 1/1/95 Low Oil Pressure Alert. Check Oil Filter Alarm - 1 at 16:14 1/1/95 Sensor Fault: CheckBearing Temp.
CONTROL SEQUENCE A B C D E F G O/A Control sequence To start: Local start-up (manual start-up) is initiated by pressing the LOCAL menu softkey which is indicated on the default local interface device (LID) screen. Time schedule 01 must be in the Occupied mode and the internal 15-minute start-to-start and the 1-minute stop-to-start inhibit timers must have expired. All pre-start alerts are checked to verify that they are within limits.
Typical control wiring LEGEND BRG — C — CB — CH — COM — COMP’R — COND — DETR — 26 Bearing Contactor Circuit Breaker Channel Communications Compressor Condenser Detector DIFF DISCH ENT EVAP EXT G.V.
LEGEND PH — Phase PRESS. — Pressure PSIO — Processor/Sensor Input/Output Module R — Terminal Designation SMM — Starter Management Module T — Terminal t* — Thermistor TEMP — Temperature TEWAC — Totally Enclosed Water-to-Air Cooled TG — Terminal Designation TS — Terminal Strip Required Power Wiring Required Control Wiring Options Wiring IMPORTANT: Wiring shown is typical and not intended to show detail for a specific installation. Refer to certified field wiring diagrams.
M OL’s OS — — — — — — — PH PR SP SW T TB V LEGEND Differential Pressure Contactor Compressor Ground Hertz Line Terminal Control Power Line Terminal — Motor — Overloads — 3-Phase Current Power Source ∆P — C — COMP’R — G — HZ — L — LL — Phase Pilot Relay Open Terminal Designation (Open Space) Switch Terminal Terminal Board Volt Required Power Wiring Required Control Wiring Options Wiring IMPORTANT: Wiring shown is typical and not intended to show detail for a specific instllation.
NOTES FOR TYPICAL FIELD WIRING NOTES: I GENERAL 1.0 Starters shall be designed and manufactured in accordance with Carrier Engineering requirement Z-375. 1.1 All field-supplied conductors and devices, field-installation wiring, and termination of conductors and devices must be in compliance with all applicable codes and job specifications. 1.
Typical piping and wiring 17EX CHILLER WITH FREE-STANDING STARTER TO COOLING TOWER (FROM CONDENSER NOZZLE OUT) TO CONDENSER NOZZLE IN (FROM COOLER NOZZLE OUT) 7 MAIN POWER TO COOLING LOAD 2 1 1 1 3 4 5 2 8 6 TO CHILLED WATER PUMP TO CONDENSER WATER PUMP TO COOLING TOWER FAN 7 9 FROM COOLING TOWER FROM COOLING LOAD TO COOLER NOZZLE (IN) 11 DRAIN 10 1 2 3 4 5 6 7 8 9 10 11 30 — — — — — — — — — — — LEGEND Disconnect Oil Pump Disconnect (See Note 5) Chilled Water Pump Starter Condenser Wa
Guide specifications Open Drive Centrifugal Chiller Size Range: 1500 to 2250 Tons (5820 to 7910 kW) Nominal Carrier Model Number: 17EX (with External Gear) Part 1 — General 1.01 SYSTEM DESCRIPTION A. Microprocessor controlled liquid chiller using twostage hermetic or open centrifugal compressor with HFC-134a refrigerant. Chillers using CFC refrigerants such as CFC-11, CFC-12, or CFC-500 shall not be acceptable. Refrigerants such as HCFC-123 or HCFC-22 are not recommended. B.
Guide specifications (cont) ready-to-run unit shall be the responsibility of the mechanical contractor. B. Compressor: 1. Compressor shall be high-performance centrifugal, two-stage, and externally geared. 2. Compressors shall be open-drive type, arranged for easy servicing. Connections to the compressor shall be flanged for easy disassembly. 3. The internal compressor housing shall be coated with epoxy paint to ensure cleanliness and to prevent oil penetration into the compressor casing. 4.
are not acceptable. All rotor bars shall be fitted and brazed into the core to minimize movement and vibration. b. Bearings: 1) Motor bearings shall be split-sleeve type and babbitt lined. The bearing caps shall be removable, so that the bearings may be inspected and replaced without disturbing the coupling. 2) Motor bearings shall be self-lubricated, using a two-piece bronze or brass oil ring. 3) Each motor bearing shall have a sight glass to provide a visual indication of the oil level.
Guide specifications (cont) using a tapered fit, double keyway design. Gear shaft shall be straight fit design. 3. Coupling guards shall be installed on both couplings. 4. If the coupling is of a proprietary design, a spare coupling and coupling shaft shall be supplied. 5. High speed coupling shall be balanced to the requirements of AGMA 9000-C90 for the category of “Normal System Sensitivity.” F. Cooler and Condenser: 1. Cooler and condenser shall be in separate shells.
an alarm light. The microprocessor can be configured to display either English or SI units. 2. The default standard display screen shall simultaneously indicate the following information: a. Date and time of day b. 24-character primary system status message c. 24-character secondary status message d. Chiller operating hours e. Entering chilled water temperature f. Leaving chilled water temperature g. Evaporator refrigerant temperature h. Entering condenser water temperature i.
Guide specifications (cont) 7. 8. 9. 10. 11. 36 shall not occur until the vanes are closed. If the vanes are closed and the oil pump pressure is less than 3 psi (21 kPa), the oil pump shall be energized, and the tower fan control is enabled. The controls wait a minimum of 15 seconds (maximum, 5 minutes) to verify that the compressor oil pressure has reached 15 psi (103 kPa). After the oil pressures are verified, the controls wait 10 seconds.
shut down and a message shall be displayed informing the operator which condition caused the shutdown and alarm. L. Diagnostics and Service: 1. The control system shall execute a series of prestart checks whenever a start command is received to determine if pressures, temperatures, and times are within normal limits, thereby allowing a normal start-up to commence. If any of the limits are exceeded, an alert message will be displayed informing the operator of the cause of the prestart alert. 2.
Guide specifications (cont) Switches shall make contact when flow is established. Switches shall be installed in horizontal runs at least 5 pipe diameters downstream from any bend or tee. Q. Start-up: 1. The chiller manufacturer shall provide a factorytrained representative, employed by the chillermanufacturer, to perform the start-up procedures as outlined in the Start-Up, Operation, and Maintenance manual provided by the chiller manufacturer. 2.
* 3. 4. 5. * 6. * 7. * 8. * 9. * 10. * 11. b. Unit manufacturer shall provide the cooler with 3 pass configuration on the water side. Automatic Hot Gas Bypass: Hot gas bypass valve and piping, designed to artificially load the evaporator, shall be factory furnished to permit chiller operation down to 5% of full load capacity for extended periods of time.
Carrier Corporation • Syracuse, New York 13221 7-99 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Pg 40 Catalog No. 521-731 Printed in U.S.A.
