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

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3.6.3 - Communication wiring The CCN may easily be converted to JBUS mode. Cable type: LIYCY 0. Alarm 1. Ground wire 2. Ground 3. Black 34 J7 J1 J6 J6 } G + SERVICE 0 24 VAC - R CVC J7 J1 J6 J6 } SERVICE 24 VAC - G + 4. White 5. Red 6. Terminal strip 7. Chassis ground 0 R Fig. 21 - COMM1 CCN communication wiring for multiple chillers (typical) CVC J7 J1 J6 J6 } 24 VAC - G + SERVICE 0 R CVC 8. Chiller Visual Control CVC 9. 19XR chillers 10. Factory-wiring 11. Field-wiring
3.6.4 - Make the necessary connections for the outgoing control signals Connect the auxiliary equipment, the chilled water pumps and the condenser water pumps, as well as the additional alarms, as indicated in the job wiring diagrams. 3.6.5 - Connect the starting cabinet The 19XR is available either with a unit-mounted, factoryinstalled starter cabinet (optional), or with a freestanding, fieldinstalled starter (Figs. 22 and 23). 17 18 19 1. Disconnect 2. Unit mounted starter with control (factory-installed) 3. Guide vane motor 4. Oil pump terminal box 5. Vents 6. Pressure gauges 7. Chilled water pump 8. Condenser water pump 9. Chilled water pump starter 10. Condenser water pump starter 11. Cooling tower fan starter 12. To cooling tower 13. From cooling tower 14. To load 15. From load 16. Drain 17. Piping 18. Control wiring 19. Power wiring 8 7 13 18 12 15 14 Fig. 22 - 19XR with optional unit-mounted starter 3.6.5.1 - Unit-mounted factory-installed starter cabinet Connect the power leads of the auxiliary equipment, chilled and condenser water pump as well as the associated alarms, using the conductor provided (see Fig. 22). NOTE: Connection of power leads: When the section switch is chosen as a main circuitbreaker device, it is necessary to install a protection against short circuits upstream of the cabinet. 16 IMPORTANT: Ensure correct phasing is followed for proper motor rotation. 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 3 35
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: Electrical characteristics of the m
Page 37 and 38: Insulate Motor Terminals and Lead W
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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