Carrier 19XR, XRV specifications Chillers with Isolation Valves

Page 70

TRANSFER REFRIGERANT FROM CHILLER TO PUMP- OUT STORAGE TANK

1. Equalize refrigerant pressure.

 

 

 

 

 

 

 

 

 

a.

Valve positions:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

2

3

4

5

6

7

8

10

11

12

13

14

 

CONDITION

 

 

C

 

C

C

 

C

C

 

 

 

 

 

b.

Slowly open valve 5. When the pressures are

 

equalized, open liquid line valve 7 to allow liquid

 

refrigerant to drain by gravity into the pumpout

 

storage tank.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

2

3

4

5

6

7

8

10

11

12

13

14

 

CONDITION

 

 

C

 

C

 

 

 

C

 

 

 

 

 

2. Transfer the remaining liquid.

 

 

 

 

 

 

 

 

 

a.

Turn off the pumpout condenser water. Place the

 

valves in the following positions:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

2

3

4

5

6

7

8

10

11

12

13

14

 

CONDITION

 

 

 

C

C

 

 

 

C

 

 

 

 

 

b.

Run the pumpout compressor for approximately

 

30 minutes; then close valve 10.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

2

3

4

5

6

7

8

10

11

12

13

14

 

CONDITION

 

 

 

C

C

 

 

 

C

C

 

 

 

 

c.

Turn off the pumpout compressor.

 

 

 

 

 

 

3. Remove any remaining refrigerant.

 

 

 

 

 

 

 

a.

Turn on the chiller water pumps using the PUMP-

 

DOWN LOCKOUT screen, accessed from the

 

CONTROL TEST table. Turn on the pumps manu-

 

ally, if they are not controlled by the PIC II.

b.

Turn on the pumpout condenser water.

c.

Place valves in the following positions:

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

2

3

4

5

6

7

8

10

11

12

13

14

 

CONDITION

 

 

C

 

 

C

 

 

C

C

 

 

 

 

d.

Run the pumpout compressor until the chiller pres-

 

sure reaches 30 psig (207 kPa) for HFC-134a.

 

Then, shut off the pumpout compressor. Warm

 

condenser water will boil off any entrapped liquid

 

refrigerant and the chiller pressure will rise.

e.

When the pressure rises to 40 psig (276 kPa) for

 

HFC-134a, turn on the pumpout compressor until

 

the pressure again reaches 30 psig (207 kPa), and

 

then turn off the pumpout compressor. Repeat this

 

process until the pressure no longer rises. Then,

 

turn on the pumpout compressor and pump until

 

the pressure reaches18 in. Hg. (40 kPa absolute).

f.

Close valves 1a, 1b, 3, 4, 6, 7, and 10.

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

2

3

4

5

6

7

8

10

11

12

13

14

 

CONDITION

C

C

C

C

C

C

C

C

C

C

 

 

 

 

g.Turn off the pumpout condenser water and con- tinue to use the PIC II PUMPDOWN LOCKOUT screen functions, which lock out the chiller com- pressor for operation.

4.Establish a vacuum for service.

To conserve refrigerant, operate the pumpout compressor until the chiller pressure is reduced to 18 in. Hg vac., ref 30 in. bar. (40 kPa abs.) following Step 3e.

Chillers with Isolation Valves

TRANSFER ALL REFRIGERANT TO CHILLER CON- DENSER VESSEL — For chillers with isolation valves, refrigerant can be stored in one chiller vessel or the other with- out the need for an external storage tank.

1. Push refrigerant into the chiller condenser.

 

 

 

 

 

 

a.

Valve positions:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

 

2

3

4

5

 

8

11

12

 

13

 

14

 

 

CONDITION

 

 

 

 

C

C

 

 

C

 

C

 

C

 

C

b.

Using the PIC II controls, turn off the chiller water

 

pumps and pumpout condenser water. If the chiller

 

water pumps are not controlled through the PIC II,

 

turn them off manually.

 

 

 

 

 

 

 

 

 

 

 

c.

Turn on the pumpout compressor to push the liquid

 

refrigerant out of the chiller cooler vessel.

 

 

 

d.

When all liquid refrigerant has been pushed into

 

the chiller condenser vessel, close chiller isolation

 

valve 11.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

e. Access the PUMPDOWN LOCKOUT screen on

 

the PIC II CONTROL TEST table to turn on the

 

chiller water pumps. If the chiller water pumps

 

are not controlled by the PIC II, turn them on

 

manually.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

f.

Turn off the pumpout compressor.

 

 

 

 

 

 

 

2. Evacuate the refrigerant gas from chiller cooler vessel.

 

a.

Close pumpout compressor valves 2 and 5, and

 

open valves 3 and 4.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

 

2

3

4

5

 

8

11

12

 

13

 

14

 

 

CONDITION

 

 

 

C

 

 

C

 

C

C

C

 

C

 

C

b.

Turn on the pumpout condenser water.

 

 

 

 

 

c.

Run the pumpout compressor until the chiller

 

cooler vessel pressure reaches 18 in. Hg vac

 

(40 kPa abs.). Monitor pressures on the CVC/

 

ICVC and on refrigerant gages.

 

 

 

 

 

 

 

d.

Close valve 1a.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

e.

Turn off the pumpout compressor.

 

 

 

 

 

 

 

f.

Close valves 1b, 3, and 4.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

 

2

3

4

5

 

8

11

12

 

13

 

14

 

 

CONDITION

C

C

C

C

C

C

 

C

C

C

 

C

 

C

g.

Turn off the pumpout condenser water.

 

 

 

 

 

h. Proceed to the PUMPDOWN/LOCKOUT function

 

accessed from the CONTROL TEST table to turn

 

off the chiller water pumps and lock out the chiller

 

compressor. Turn off the chiller water pumps man-

 

ually if they are not controlled by the PIC II.

 

 

 

TRANSFER ALL REFRIGERANT TO CHILLER

COOLER VESSEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Push the refrigerant into the chiller cooler vessel.

 

 

 

a.

Valve positions:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALVE

1a

1b

 

2

3

4

5

 

8

11

12

 

13

 

14

 

 

CONDITION

 

 

 

C

 

 

C

 

C

 

C

 

C

 

C

b.

Turn off the chiller water pumps (either through

 

the PIC II controls or manually, if necessary) and

 

the pumpout condenser water.

 

 

 

 

 

 

 

 

 

c.

Turn on the pumpout compressor to push the

 

refrigerant out of the chiller condenser.

 

 

 

 

 

d.

When all liquid refrigerant is out of the chiller con-

 

denser, close the cooler isolation valve 11.

 

 

 

e.

Turn off the pumpout compressor.

 

 

 

 

 

 

 

70

Page 69 Page 71
Image 70
Page 69 Page 71
Contents Start-Up, Operation, and Maintenance Instructions Safety ConsiderationsContents Contents Introduction Abbreviations and ExplanationsChiller Familiarization 19XR IdentificationTypical 19XR Components Refrigeration Cycle Motor and Lubricating OIL Cooling CycleVFD Cooling Cycle Lubrication CycleStarting Equipment Unit-Mounted Solid-State Starter OptionalControls Unit-Mounted Wye-Delta Starter OptionalDefinitions Variable Frequency Drive VFD 19XR Controls and Sensor Locations Major PIC II Components Panel Locations PIC II Component Panel LocationControl Panel CVC/ICVC Operation and Menus Fig Example of Status Screen 19XR Chiller Display Menu Structure CVC/ICVC 19XR Service Menu Structure Time and Date Example of Time Schedule Operation Screen Example of Set Point Screen Example 1 Chiller Display Default Screen CVC/ICVC Display DataExample 3 Startup Display Screen Example 2 Maintstat Display ScreenDescription Status Units Point Startup Description Status Units PointExample 4 Compress Display Screen Example 5 Heatex Display ScreenExample 6 Power Display Screen Example 7 Ismstat Display ScreenCVC Icvc Description Status Units Point Menu Setpoint Select Description Status Units Point DefaultExample 8 CVC/ICVCPSWD Display Screen Example 9 Setpoint Display ScreenControl Algorithm Status Override Description Units Point Example 11 Override Display ScreenExample 12 Llmaint Display Screen Example 14 Wsmdefme Display Screen Example 13 Ismhist Display ScreenControl Algorithm Status Wsmdefme Description Units Point Example 15 Netopt Display Screen ISM Starter Config DataIsmconf Description Status Units Point Default Example 16 Ismconf Display ScreenSpare ALERT/ALARM Enable Example 18 SETUP1 Display ScreenExample 17 Options Display Screen Example 20 Leadlag Display Screen Example 19 SETUP2 Display ScreenLAG=2, STANDBY=3 Example 21 Rampdem Display Screen Description Status Units Point DefaultReset Type Example 22 Tempctl Display ScreenMode IGV VFD Normal Control mode occurs when Active Delta TSurge Prevention Mode occurs when Active Delta T PIC II System FunctionsPage Protective Safety Limits and Control Settings Page Capacity Overrides Evaporator Freeze Protection Icvc only a Page Surge Protection Fixed Speed Chiller Head Pressure Reference OutputPage Page Point Example of Attach to Network Device Screen Example of Holiday Period Screen Recycle Sequence Fig Default CVC/ICVC screen, press the MenuSTART-UP/SHUTDOWN Local Start-Up Local start-up or a manual start-up isEntering Condenser Water temperature plus 3 F -1.6C Job Data Required Before Initial START-UPEquipment Required 19XR Leak Test Procedures Page Page HFC-134a Pressure Temperature C HFC-134a Pressure Temperature FTemperature Pressure Inspect Wiring Perform dehydration as followsManufacturer Cable no Check StarterWhite G Software Configuration Parameter Benshaw RediStart Micro Menu Items Verify VFD Configuration and Change Parameters if Necessary Description Setting VFD Title Setting ParameterDescription Settings Press Status Press Compress Press Select Press Menu Press Status Press Compress Press SelectEstimated Minimum Load Conditions Load Surge Prevention Occurs TOO Soon Occurs TOO LateCCM Temperature Thermistors Control Test Menu Functions Charge Refrigerant into ChillerTests to be Devices Tested Performed Initial START-UP Refrigerant HFC-134a ChargeCheck Motor Rotation Dry Run to Test Start-Up SequenceCheck Oil Pressure and Compressor Stop To Start the Chiller Operating InstructionsOperator Duties To Stop the ChillerPumpout and Refrigerant Transfer Procedures Operating the Optional Pumpout UnitBearing Date Cooler Condenser CompressorTime FLATurn off pumpout condenser water Valve ConditionChillers with Isolation Valves General Maintenance Test After Service, Repair, or Major Leak IfWeekly Maintenance Guide Vane Actuator LinkageScheduled Maintenance Check Safety and Operating Controls MonthlyCompressor Bearing and Gear Maintenance Inspect the Heat Exchanger Tubes and Flow DevicesOrdering Replacement Chiller Parts When Optional Pumpout System ControlsTroubleshooting Guide Checking Pressure TransducersLlmaint HeatexOccdefcm ICE Build Terminate Pumpdown ModeShutdown in Progress Ready to StartAutorestart in Progress PrestartAlert Running Temp ControlLimited FaultRUN Capacity SensorStart ProtectiveFailure to StopPotential LossCommunication FREEZE-UPAutorestart Sensor AlertLOW OIL Pressure PendingOption Sensor Pressure AlertRecycle DiffuserThermistor Temperature F vs. Resistance/Voltage Drop DropThermistor Temperature C vs. Resistance/Voltage Drop Temperature PIC ResistancePower is connected to Plug J1 on each module Control ModulesIntegrated Starter Module Fig Chiller Control Module CCM FigReplacing Defective Processor Modules Integratedstartermodule Measure SCR Pairs Recorded Being Between CheckedHeat Exchanger Data English Number of Tubes English CodeHeat Exchanger Data SI Number of Tubes CodeCompressor Weights 19XR Additional Data for Marine Waterboxes19XR Motor Weights Standard and High Efficiency Motors English Motor19XR Waterbox Cover Weights English lb 19XR Waterbox Cover Weights SI kg Optional Pumpout System Electrical Data Additional Miscellaneous WeightsMotor Voltage Code Compressor Assembly Torques Description TorqueView B High Speed Shaft 19XR Compressor Clearances Compressor Code100 Allen-Bradley Wye-Delta Unit-Mounted Starter101 102 ISM103 Temp104 105 106 Power Panel Wiring Schematic 107Cutler-Hammer Wye Delta Unit Mounted Starter Sizes 3-5DP 108Cutler-Hammer Wye Delta Unit Mounted Starter Size 6DP 109Ground Fault Phase Current Option Separate Metering Option111 112 AUX113 FU Fuse114 115 VFDTypical Variable Frequency Drive VFD Wiring Schematic 116117 118 119 120 121 122 Index Index Remove and use for job file JOB Data RequiredInspect Wiring and Record Electrical Data Ratings CL-260.0 40 to 10010 to 15 toCL-4 105 to 115 200 to460 85 to20 to Psi 30 to50 to CL-6125 150 to90 to 125 to90 to 100 65 toAmp 250 CL-8 25 to CL-950 to 145 CL-100000 to 0200 0000 to0200 CL-11028 10 to Job Sheet 60 for 60 Hz and 50 for 50 Hz 002 Power Module Dependent Selected motor 100% amps004 To H.022 Job Sheet 60 for 60 Hz and 50 for 50 Hz 000 100 to Selected line voltageCL-13 CCN Local Reset CL-14Page Incurring obligations
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19XR, XRV specifications

The Carrier 19XR and 19XRV chillers are sophisticated cooling solutions that represent the forefront of HVAC technology. Designed for large commercial and industrial applications, these chillers provide exceptional performance, energy efficiency, and reliability, making them ideal for a variety of environments ranging from hospitals to manufacturing facilities.

One of the most significant features of the Carrier 19XR and 19XRV chillers is their advanced scroll compressor technology. These units employ a tandem scroll design that enhances efficiency while minimizing operational noise. This makes them ideal for urban environments where noise restrictions may be in place. Moreover, the compressors are equipped with variable speed drive options in the 19XRV model, which allows for greater energy savings by adjusting cooling output based on real-time demand.

In addition to their advanced compressors, the 19XR and 19XRV units incorporate the Carrier GreenChoice refrigerant, which has a lower global warming potential compared to traditional refrigerants. This innovative choice not only meets regulatory requirements but also contributes to sustainability goals, making these chillers a responsible choice for environmentally conscious organizations.

The units are engineered with a robust heat exchanger design, which enhances heat transfer efficiency and overall system performance. This ensures optimal operation even in extreme conditions. They feature a microprocessor-based control system that allows for precise monitoring and control of the chiller’s performance, enabling operators to make real-time adjustments to maximize energy efficiency.

The Carrier 19XR and 19XRV chillers also prioritize serviceability. The design incorporates easy access to key components, simplifying maintenance procedures and reducing downtime. This focus on maintainability extends the lifespan of the equipment, leading to lower lifecycle costs.

In terms of connectivity, these chillers are equipped with advanced Building Management System (BMS) integration capabilities. This allows for seamless monitoring and control of the chillers using a centralized platform, facilitating energy management and operational optimization.

Overall, the Carrier 19XR and 19XRV chillers stand out in the market for their blend of cutting-edge technology, energy efficiency, and user-friendly features. They are engineered to meet the demanding needs of modern commercial and industrial applications, making them a preferred choice for facility managers seeking reliable cooling solutions.
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