19XR (PIC II) Hermetic Centrifugal Liquid Chillers 50 Hz - Carrier

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3.6.5.2 - Freestanding, Field-Installed Starter The starters must be designed and manufactured in accordance with Carrier instruction EE38 for the 19XR. Assemble and install compressor terminal box in desired orientation, and cut necessary conduit openings in conduit support plates (see Fig. 23). Attach power leads to compressor terminals in accordance with job wiring drawings, observing caution label in terminal box. Use only copper conductors. 36 20 21 22 16 1. Disconnect 2. Freestanding compressor motor starter 3. Compressor motor terminal box 4. Oil pump terminal box 5. Control cabinet 6. Vents 7. Pressure gauges 8. Chilled water pump 9. Condenser water pump 10. Chilled water pump starter 11. Condensing water pump starter 12. Cooling tower fan starter 13. Disconnect 14. Oil pump disconnect (see Note 5) 15. To cooling tower 16. From cooling tower 17. To load 18. From load 19. Drain 20. Piping 21. Control wiring 22. Power wiring 15 18 17 Fig. 23 - 19XR with freestanding starter The motor must be earthed in accordance with applicable codes, local regulations and the project wiring diagrams. Installer is responsible for any damage caused by improper wiring between starter and compressor motor. IMPORTANT: Do not insulate terminals until wiring arrangement has been checked and approved by Carrier start-up personnel. Also, make sure correct phasing is followed for proper motor rotation (clockwise). 19 NOTES: 1. Wiring and piping shown are for general point-ofconnection only and are not intended to show details for a specific installation. Certified field wiring and dimensional diagrams are available on request. 2. All wiring must comply with applicable codes. 3. Refer to Carrier System Design Manual for details regarding piping techniques. 4. Wiring not shown for optional devices such as: remote start-stop remote alarm optional safety device 4 to 20 mA resets optional remote sensors 5. Oil pump disconnect may be located within the enclosure of item 2 - freestanding compressor motor starter cabinet.
Insulate Motor Terminals and Lead Wire Ends Insulate compressor motor terminals, lead wire ends, and electrical wires to prevent moisture condensation and electrical arcing. For low-voltage units (up to 600 V), obtain insulation material from machine shipping package consisting of 3 rolls of insulation putty and one roll of vinyl tape. Insulate each terminal by wrapping with one layer of insulation putty. Overwrap putty with 4 layers of vinyl tape. High-voltage units High-voltage units require special terminal preparation. Follow electrical codes for high-voltage installation. Vinyl tape is not acceptable; a high voltage terminal method must be used. CAUTION: A cable conduit is provided in the bottom of the control box for field wiring connections. General remarks on Fig. 23 All field-supplied conductors, devices, field-installation wiring, and termination of conductors and devices must be in compliance with all applicable codes and job specifications. The routing of field-installed conduit and conductors and the location of field-installed devices must not interfere with equipment access or the reading, adjusting, or servicing of any component. Equipment, installation, and all starting and control devices must comply with details in equipment submittal drawings and literature. Contacts and switches are shown in the position they would assume with the circuit deenergized and the chiller shut down. Installer is responsible for any damage caused by improper wiring between starter and machine. Electrical connection of the starter The compressor motor and the regulating part must be earthed to the starter cabinet. Control wiring Do not use the regulating transformer to supply the pilot relays. The wiring running between starter and regulation must be shielded and connected on both sides (600 V/ 80ºC cables min.). If the oil pump disconnect is not included in the starter, it must be installed in view of the unit with appropriate wiring. Wiring between the starter and the compressor motor Low voltage (600 V or less) compressors have six terminal studs. Between 3 and 6 leads must be run to the starter, depending on the type of starter employed. If only 3 are used, jumper the terminals as follows: 1 to 6, 2 to 4 and 3 to 5. Centre-to-centre distance between terminals is 82/125 mm (frame 3 compressor/ frame 4 compressor). The starter must have a nameplate stamped as conforming with the requirements of Carrier Technical Specifications EE038. The terminal studs must not take the weight of the leads: if necessary, use intermediate supports. Use a torque spanner to tighten the terminal nuts to 200 N maximum, maintaining the terminal with an additional spanner. Compressor Diameter Distance between terminals (from centre line) 3 15.9 82 4 15.9 82 5 22.2 125 3.6.6 - Connect the starting cabinet to the control box See Fig. 24 - Connect the starter cabinet to the unit control box. In addition, connect the communication cable (SIO) directly from the control box to the starter cabinet. All regulating cables must be shielded. Connect the communication cable (shielded cable, type LIYCY). Consult the job wiring diagrams for cable type and number. Ensure that the control circuit is properly earthed in accordance with electrical standards and with the instructions on the machine control wiring label. 3.6.7 - Carrier Comfort Network interface (CCN) The Carrier Comfort Network (CCN) communication bus wiring is supplied and installed by the electrical contractor. It consists of shielded, 3-conductor cable with metallic braiding. The system elements are connected to the communication bus in a daisy chain arrangement. The positive pin of each system element communication connector must be wired to the positive pins of the system element on either side of it. The negative pins must be wired to the negative pins. The signal ground pins must be wired to the signal ground pins (see Fig. 21 for location of the CCN network connector on the CVC (J1) module. When connecting the CCN communication bus to a system element, a color code system for the entire network is recommended to simplify installation and checkout. The following color code is recommended: Signal CVC connector CCN Bus conductor type* insulation colour + 1 Red Ground 2 White - 3 Black * Cable type to be used: shielded cable LIYCY If a cable with a different color scheme is selected, a similar color code should be adopted for the entire network. At each system element, the shields of its communication bus cables must be tied together. If the communication bus is entirely within one building, the resulting continuous shield must be connected to ground at only one single point (see Fig. 21). If the communication bus cable exits from one building and enters another, the shields must be connected to ground at the lightening suppressor in each building where the cable enters or exits the building (one point only). To connect the 19XR chiller to the network, proceed as follows (Fig. 21): 1. Cut power to the PIC II control panel. 2. Find connector J1 on the CVC. 37
Page 1 and 2: 19XR (PIC II) Hermetic Centrifugal
Page 3 and 4: TABLE OF CONTENTS (cont'd) 4 - BEFO
Page 5 and 6: INITIAL START-UP CHECKLIST FOR 19XR
Page 7 and 8: 19XR HERMETIC CENTRIFUGAL LIQUID CH
Page 9 and 10: 1 - SAFETY CONSIDERATIONS 19XR liqu
Page 11 and 12: 2 - INTRODUCTION AND CHILLER FAMILI
Page 13 and 14: The control centre: registers coole
Page 15 and 16: 1. Rear motor bearing 2. Forward mo
Page 17 and 18: 3 - INSTALLATION 3.1 - Introduction
Page 19 and 20: 3.3.3 - Physical data Table 1 Motor
Page 21 and 22: Maximum and minimum heat exchanger
Page 23 and 24: 1. Hot gas bypass (cut) 2. Compress
Page 25 and 26: 3.4 - Install machine supports Typi
Page 27 and 28: 1. Air vent 2. Leaving condenser wa
Page 29 and 30: 1a. Safety valve on machine 1b. Saf
Page 31 and 32: The control cabinet (standard unit)
Page 33 and 34: Electrical characteristics of the m
Page 35: 3.6.4 - Make the necessary connecti
Page 39 and 40: 4 - BEFORE INITIAL START-UP 4.1 - N
Page 41 and 42: h. Slowly raise the system pressure
Page 43 and 44: 6. Valve off the vacuum pump, stop
Page 45 and 46: The valve is opened counter-clockwi
Page 47 and 48: To return the chiller to normal con
Page 49 and 50: 49 Date: __________________________
Page 51 and 52: To pressurize with dry nitrogen Ano
Page 53 and 54: 7.3.5 - Refrigerant Filter A refrig
Page 55 and 56: X See view A Y See view B Z Thrust

19XR (PIC II) Hermetic Centrifugal Liquid Chillers 50 Hz - Carrier

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