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19XB
Positive Pressure Storage System
50/60 Hz
Installation, Operating, and Maintenance
Instructions
For Use With Positive Pressure Chillers
SAFETY CONSIDERATIONS
Positive pressure storage systems are designed to pro- withsoapandwater.Ifanyenterstheeyes,IMMEDIATELYFLUSH
vide safe and reliable service when operated within de- EYES with water and consult a physician.
signspecifications.Whenoperatingthisequipment,use
NEVERAPPLY an open flame or live steam to a refrigerant cyl-
good judgment and safet
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CONTENTS INTRODUCTION Page The 19XB Positive Pressure Storage (PPS) System has beendesignedtohelpownersandoperatorsofpositivepres- SAFETY CONSIDERATIONS...................1 surechillersstorerefrigerantsHCFC-22andHFC-134adur- INTRODUCTION..............................2 ing service and repair work. The 19XB system conserves theserefrigerantsandpreventsthereleaseofexcessiveamounts INSTALLATION .............................2-10 of refrigerant into the atmosphere. The proper use of this Complete Pre-
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Table 1 — Positive Pressure System Assembly Numbers POSITIVE PRESSURE PUMPOUT UNIT COMPRESSOR MOTOR MAXIMUM STORAGE SYSTEM ASSEMBLY REFRIGERANT LRA ASSEMBLY NO. (V-Ph-Hz) RLA TANK NUMBER 19XB04280205 19EA42-748 R-22 208-3-60 13.2 63.5 28 cu ft 19XB04280206 19EA44-748 R-22 230-3-60 11.5 57.5 28 cu ft 19XB04280207 19EA46-748 R-22 400/460-3-50/60 5.8 28.8 28 cu ft 19XB04280208 19EA47-748 R-22 575-3-60 4.6 23.0 28 cu ft 19XB04280213 19EA48-748 R-134a 208-3-60 13.2 63.5 28 cu ft 19XB04280214 19EA49-7
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VENT VALVE VALVES CONTROL BOX VALVES (WIRING BY CONTRACTOR) COMPRESSOR CONDENSER REFRIGERANT WATER INLET VALVE CONNECTIONS (FIELD PIPING) 19EAPUMPOUT UNIT 19EACONTROL BOX (INTERIOR) 19EA PUMPOUT UNITS Fig. 1 — 19XB Positive Pressure Storage System 4
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3 * ⁄8-16 bolts × 1-in. lg; 4 required. Fig. 2 — 19EA Pumpout Unit: Typical Chiller Mount ELECTRICAL CONNECTION OPTION LIST TRADE SIZE QTY LOCATION 1 ⁄2( 1TOP 3 ⁄4( 1 BOTTOM 1( 1 MIDDLE 1 1 ⁄4( 1 MIDDLE Fig. 3 — Pumpout Unit Contact Surfaces and Dimensions 5
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NOTES: 1. Eachchainmustbecapableofsupportingtheentireweightofthe machine. 2. Minimum chain length: 3 28 ft tank — 108-09 3 52 ft tank — 158-69 3. Total weight equals empty weight from chart and charge weight given on label. CENTER OF GRAVITY STORAGE EMPTY WEIGHT APPROX. DIM. — ft-in. (mm) TANK SIZE LB (Kg) AB 1 7 4- 5 ⁄4 1-7 ⁄8 2380 3 28 Ft (1353) (505) (1080) 1 3 6-10 ⁄8 1-8 ⁄4 3460 3 52 Ft (2086) (527) (1569) Fig. 4 — Rigging Guide Table 2 — Physical Data 19EA Pumpout Unit ENGLISH (SI) Pumpout
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Table 3 — 19XB Storage Tank Rated Dry Weight and Refrigerant Capacity English MAXIMUM REFRIGERANT CAPACITY (lb) TANK OD DRY WEIGHT* SIZE CODE ASHRAE/ANSI 15 UL 1963 (in.) (lb) R-22 R-134a R-22 R-134a 0428 24.00 2380 1842 1860 1704 1716 0452 27.25 3460 3527 3563 3264 3286 SI MAXIMUM REFRIGERANT CAPACITY (kg) TANK OD DRY WEIGHT* SIZE CODE ASHRAE/ANSI 15 UL 1963 (mm) (kg) R-22 R-134a R-22 R-134a 0428 610 1080 836 844 773 778 0452 592 1569 1600 1616 1481 1491 LEGEND ANSI — American National Standard
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DIMENSIONS ENGLISH (ft-in.) TANK A B CD E F G H J K LM N P R S T SIZE 3 3 3 1 7 1 3 7 5 3 1 0428 10- 5 9-10 4-9 2-4 ⁄4 1-2 ⁄8 3-1 ⁄16 4-11 3-8 ⁄8 3- 8 2-9 ⁄16 3-2 0-3 ⁄2 4-8 ⁄4 1-7 ⁄8 1-7 ⁄16 3-7 ⁄4 5-0 ⁄4 1 1 7 1 1 7 1 7 5 7 3 1 3 9 1 0452 14-11 ⁄4 14- 4 ⁄2 5-0 ⁄8 2-8 ⁄2 1-4 ⁄4 3-4 ⁄16 7- 2 ⁄4 4-0 3-11 ⁄8 3-1 ⁄16 3-5 ⁄8 0-3 ⁄8 7-1 ⁄2 1-8 ⁄4 1-7 ⁄16 3-8 5-0 ⁄2 SI (mm) TANK ABC D E F G H J K L M N P R S T SIZE 0428 3175 2997 1448 730 365 945 1499 1121 1118 849 965 89 1442 505 491 1111 1530 0452 4
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CHILLERS WITHOUT ISOLATION VALVES CHILLERS WITH ISOLATION VALVES (WITHORWITHOUTPUMPOUTSTORAGETANKS) LEGEND GENERAL PIPING CONNECTION SIZES Factory-Supplied Tubing CONNECTION SIZE (in.) Field-Supplied Tubing 1 Refrigerant Transfer Connections ⁄2 ODS (female) Field-Supplied Tubing (Multiple Chillers) 1 Condenser Water Cooling Connectors ⁄2 NPT (female) Service Valve (Factory Supplied) 3 Safety Relief Head Pumpdown Condenser ⁄8 Flare (male) Service Valve (Field Supplied) ODS — Outside Diameter, Swe
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Table 4 — Relief Devices REQUIRED FACTOR STORAGE RELIEF VALVE QUANTITY lb air Kg air TANK SIZE OUTLET SIZE min min 1 in. NPT 28 2 31.4 14.2 Female Connector 1 in. NPT 52 2 52.3 23.7 Female Connector LEGEND Ground Field Wiring Factory Wiring Contactor Term. Overload Term. Pumpdown Term. Pumpdown Comp’r. Term. Fig. 7 — 19XB Pumpout System Wiring Schematic LEGEND C— Contactor Fu — Fuse, 3Amps Compressor Terminal HP — High-Pressure Cutout L— Compressor Motor Voltage Line (3-phase) Contactor Terminal
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LEVELGAGE—Liquidlevelgage(magneticallycoupled CONTROLS AND COMPONENTS dial type) with electronic shut-off at 90% liquid capacity. Figure1showsthemajorcomponentsofthePPSsystem. PumpoutUnit— Thepumpoutunitconsistsofaspring- mounteddirectmotor-drivenreciprocatingcompressor,awater- Duringtransferofrefrigerantintoandoutofthepump- cooled refrigerant condenser, an oil separator, suction and outstoragetank,carefullymonitorthestoragetanklevel dischargevalvestocontrolrefrigerantflow,andprewiredsafety gage.
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NOTE: During this operation, maintain water circulation VENT VALVE 8 OIL RETURN LINE through the chiller cooler and condenser vessels to prevent CONNECTION tube freeze-up. DISTILLING THE REFRIGERANT — Refrigerant vapor istransferredfromthechillercoolervesselorpumpoutstor- agetankthroughthepumpoutcondenser,condensedtoaliq- uid,andpumpedtothechillercondenservessel.Duringthis operation,watercirculationmustbemaintainedinthepump- outcondenser.Refrigerantimpuritiesleftinthechillercooler vessel or stor
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Fig. 10 — Valve Locations for 19XB Pumpout Unit With 19XB Storage Tank e. Openvalve5fullyafterthechillerpressurerisesabove k. Close valves 1a, 1b, 2, 5, and 6. the freezing point of the refrigerant. Let the storage VALVE 1a 1b 2345678 10 11 tankandchillerpressureequalize.Openrefrigerantcharg- CONDITION C C CCCCCCC C ing valve 7 and storage tank charging valve 10 to let liquid refrigerant drain into the chiller. l. Turn off pumpout condenser water. VALVE 1a 1b2345 6 7810 11 Transfer the Refrigera
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3. Remove any remaining refrigerant. TransferAll Refrigerant to Chiller Condenser Vessel: a. Turn on chiller water pumps. 1. Push refrigerant into chiller condenser vessel. b. Turn on pumpout condenser water. a. Turnonthechillerwaterpumpsandmonitorthechiller pressure. c. Place valves in the following positions: b. Valve positions: VALVE 1a 1b23 4567 810 11 VALVE 1a 1b 2 3 45811 CONDITION C C C C C CONDITION C C C d. Run the pumpout compressor until the chiller pres- sure reaches 60 psig (414 kPa
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d. Close valve 1a. 6. Open valve 5 fully. e. Turn off pumpout compressor. VALVE 1a 1b2345811 f. Close valves 1b, 3, and 4. CONDITION C C C C VALVE 1a 1b 23458 11 7. Close valves 1a, 1b, 3, and 5. CONDITION C C CCCCC C 8. Open chiller isolation valve 11 and any other isolation g. Turn off pumpout condenser water. valves, if present. h. Turn off chiller water pumps and lock out chiller VALVE 1a 1b 23458 11 compressor. CONDITION C C CCCCC TransferAll Refrigerant to Chiller Cooler Vessel: 9. Turn of
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PUMPOUTCOMPRESSOROILCHARGE—Useoilcon- 4. Stop the pumpout compressor and isolate the pumpout formingtoCarrierspecificationsforreciprocatingcompres- system by closing the discharge service valve. sor use. Oil requirements are listed in Table 6. 5. Slowlyremovetheoilreturnlineconnection(Fig.9).Add oil as required. Table6—PumpoutCompressorOilRequirements 6. Replace the connections and reopen the pumpout com- CARRIER pressor service valves. ISO CARRIER REFRIGERANT SPECIFICATION VISCOSITY PART NO. NO.
