Carrier 16JT080-150 Specifications

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 2

0 5 10 15 20 25 30 35 40 455055 60 65 70% LITHIUM BROMIDE BY WEIGHT IN SOLUTIONVAPOR PRESSURE IN INCHES (mm) OF MERCURY ABSOLUTESOLUTION TEMPERATURE F

Table 12 — Additional Problems/Symptoms and Their Probable Causes and Remedies (cont)PROBLEM/SYMPTOM PROBABLE CAUSE REMEDYLeaving Chilled Water Temper

VOLTAGE DROP —Using a digital voltmeter, the voltagedrop across any energized sensor can be measured while thecontrol is energized. Tables 13A-14B lis

Table 13A — 5K Ohm Thermistor Temperature (F) vs Resistance/Voltage DropTEMPERATURE VOLTAGE RESISTANCE(F) DROP (V) (OHMS)−25.0 4.821 98010−24.0 4.818

Table 13B — 5K Ohm Thermistor Temperature (C) vs Resistance/Voltage DropTEMPERATURE VOLTAGE RESISTANCE(C) DROP (V) (Ohms)−40 4.896 168 230−39 4.889 15

Table 14A — 100K Ohm Thermistor Temperature (F) vs Resistance/Voltage DropTEMPERATURE VOLTAGE RESISTANCE(F) DROP(V) (OHMS)442 0.300 395441 0.303 39944

Table 14A — 100K Ohm Thermistor Temperature (F) vs Resistance/Voltage Drop (cont)TEMPERATURE VOLTAGE RESISTANCE(F) DROP (V) (OHMS)146 3.906 22,106145

GREEN LEDS — There are one or 2 green LEDs on eachtype of module. These LEDs indicate the communication sta-tus between different parts of the control

Terminal block connections are provided on the 8-inputmodules. Any spare sensor inputs are field wired and in-stalled. For installation, refer to the u

If a CCN Building Supervisor or Service Tool is present,the module configuration should have already been up-loaded into memory; then, when the new mod

Table 15 — 16JT Heat Exchanger Weights16JTUNITSIZEENGLISH SIAbsorber/EvaporatorGenerator/CondenserLiBrRefrigerant(Water)OperatingWeight(lb)Absorber/Ev

The slightly sloped vertical lines extending from the bot-tom of the diagram are solution specific gravity lines. Theconcentration of a lithium bromide

Table 17 — 16JT Waterbox Cover Weights for Unit Sizes 080 to 150, 080L to 150L(lb)16JTUNITSIZESCONDENSER COVER ABSORBER COVER EVAPORATOR COVER EVAPORA

INDEXAbbreviations and Explanations, 4Abnormal Shutdown, Actions After, 77Absorber Loss Determination, 80Absorber/Condenser (Inspect the Heat Exchange

INDEX (cont)Field Wiring, Inspect, 55Final Adjustment of Capacity Controls, 61First 8-Input Module Inputs Test, 33First 8-Input Module, 15First Stage

INDEX (cont)Operator Duties, 76Operator, Instruct the, 68Ordering Replacement Chiller Parts, 92Outputs Test,PC6400, 32Slave PSIO, 32Override Operation

INDEX (cont)Solution Analysis, 82Solution and Refrigerant, Charge Chiller With, 58Solution Concentration Control, 34Solution Concentration Control,Fir

INITIAL START-UP CHECKLIST FOR16JT DOUBLE-EFFECT HERMETIC ABSORPTION LIQUID CHILLER(Remove and use for job file.)MACHINE INFORMATION:NAME JOB NO.ADDRES

INSPECT WIRING AND RECORD ELECTRICAL DATA:RATINGS:Line Voltages: ControlsCONTROLS: SAFETY, OPERATING, ETC.Perform Control Test (Yes/No)PIC CAUTIONPUMP

16JT DOUBLE-EFFECT ABSORPTION LIQUID CHILLERCONFIGURATION SETTINGS LOG(Remove and use for job file.)16JT SET POINT TABLE CONFIGURATION SHEETDESCRIPTION

LOCAL 16JT PIC TIME SCHEDULE CONFIGURATION SHEET OCCPC01SDay Flag Occupied UnoccupiedMTWTF S SH Time TimePeriod 1:Period 2:Period 3:Period 4:Period 5:

16JT PIC CONFIG TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUERESET TYPE 1Degrees Reset at 20 mA−15 to 15(−8.3 to 8.3)DEG F(DEG C)10(5

Point 10 represents the strong solution leaving the low-stagegenerator and entering the low-temperature heat exchanger.It is at a weaker concentration

16JT PIC SERVICE1 TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUERefrigerant Trip Point37 to 42(2.8 to 55)DEG F(DEG C)38(3.3)Refrigeran

16JT PIC SERVICE2 TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUECHWS Temp Enable0to2(0 = DSABLE1 = LOW2 = HIGH)0CHWS Temp Alert−40 to

16JT PIC SERVICE3 TABLE CONFIGURATION SHEETDESCRIPTION RANGE UNITS DEFAULT VALUEControl Point Deadband0.5 to 2.0(0.3 to 1.1)DEG F(DEG C)1.0(0.56)Propo

HOLIDAY CONFIGURATION SHEET (HOLDY S)DESCRIPTION RANGE UNITS VALUEStart Month 1to12Start Day 1to31Duration 0to99 DAYSHOLIDAY CONFIGURATION SHEET (HOLD

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 2

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 2

CONTROLSDefinitionsANALOG SIGNAL — An analog signal varies in propor-tion to the monitored source. It quantifies values betweenoperating limits. For exa

The control center is divided into two areas. The controlvoltages contained in each area of the control center are:• upper right side: all extra-low v

MASTER COMFORT CONTROLLER (PC6400) MOD-ULE — The PC6400 module contains all the operating soft-ware needed to control the chiller. To sense pressures

• CCN (Carrier Comfort Network) Operation — The PICcan be placed in CCN Operating mode by pressing theCCNsoftkey. The control will then accept modifica

CCNLOCAL RESETMENUDEFAULT SCREENStart Chiller In CCN ControlStart Chiller In Local ControlClear AlarmsSTATUSSCHEDULE SETPOINTSERVICE(SOFTKEYS)Access M

NEXTPREVIOUSSELECTEXITSERVICE TABLEDisplay Alarm History(The table holds up to 25 alarmsand alerts with the last alarm atthe top of the screen.)• Auto

NEXTPREVIOUSSELECTEXITSERVICE MENU CONTINUEDFROM PREVIOUS PAGEEQUIPMENT SERVICE (See Table 3, Examples 9, 10, and 11)Service Tables:• SERVICE 1• SERVI

CONTENTSPageSAFETY CONSIDERATIONS ...1INTRODUCTION ...4ABBREVIATIONS AND EXPLANATIONS ...4CHILLER DESCR

BASIC LID OPERATIONS (Using the Softkeys) — To per-form any of the operations described below, the PIC must bepowered up and have successfully complet

2. Press SELECT to select the highlighted point.For Discrete Points — Press START or STOP to se-lect the desired state.For Analog Points — Press INCRE

8. Press EXIT to leave the period or override.9. Either return to Step 4 to select another period or over-ride or press EXITagain to leave the current

Table 3 — 16JT LID Display DataIMPORTANT: The following notes apply to all Table 3examples.1. Only 12 lines of information appear on the LID screen at

Table 3 — 16JT LID Display Data (cont)EXAMPLE 2 — PUMPSTAT SCREEN (STATUS TABLE)DESCRIPTION RANGE/STATUS UNITS REFERENCE POINT NAMEDesolidification Mod

Table 3 — 16JT LID Display Data (cont)EXAMPLE 4 — ABSSTAT SCREEN (STATUS TABLE)To access this display from the LID default screen:1. Press MENU.2. Pre

Table 3 — 16JT LID Display Data (cont)EXAMPLE 7 — SETPOINT DISPLAY SCREENTo access this display from the LID default screen:1. Press MENU.2. Press SET

Table 3 — 16JT LID Display Data (cont)EXAMPLE 10 — SERVICE2 DISPLAY SCREEN(EQUIPMENT SERVICE TABLE)To access this display from the LID default screen:

Table 3 — 16JT LID Display Data (cont)EXAMPLE 12 — COOLING SCREEN (CONTROL ALGORITHM STATUS TABLE)The data displayed on this screen is read-only data;

Table 3 — 16JT LID Display Data (cont)EXAMPLE 14 — OVERRIDE SCREEN (CONTROL ALGORITHM STATUS TABLE)The data displayed on this screen is read-only data

CONTENTS (cont)PageInstruct the Operator ...68• PURGE OPERATION• CONTROL SYSTEM• AUXILIARY EQUIPMENT• CHILLER CYCLES• MAINTENANCE

Table 3 — 16JT LID Display Data (cont)EXAMPLE 15 − CONCENTR SCREEN (CONTROL ALGORITHM STATUS TABLE)The data displayed on this screen is read-only data

Proportional Band — There are two response modes: onefor the temperature response above the control point; the otherfor response below the control poi

Each input is followed by an appropriate value. For ex-ample, Weak LiBr Lvg LCD Box is followed by a tempera-ture. Any reading out of the valid range

Manual Mode — During the Slave PSIO outputs test, the LIDdisplays the following messages:ABS16JT — CONTROL TESTPSIO OUTPUTS TEST IN PROGRESSCycle Guar

Ramp loading is based on chilled water temperature.During the ramp loading mode, the LEAVING CHILLED WA-TER or ENTERING CHILLED WATER temperature chan

2. Second stage — occurs if the G2 CONDENSATE OVER-RIDE is exceeded by 1° F (0.56 C). The capacity valveis closed.This capacity override ends when the

LEGEND AND NOTES FOR FIG. 21-34LEGEND51RP — Refrigerant Pump Overload51SP1 — Solution Pump No. 1 Overload51SP2 — Solution Pump No. 2 Overload51SSP — S

Fig. 21 — 16JT PIC Absorption Chiller Electrical Schematic (High Voltage)37

Fig. 22 — 16JT PIC Absorption Chiller Electrical Schematic (Low Voltage)38

Fig. 23 — 16JT PIC Absorption Chiller Electrical Schematic (Slave PSIO Input)39

INTRODUCTIONEveryone involved in the start-up, operation, and main-tenance of the 16JT chiller should be thoroughly familiarwith the following instruc

Fig. 24 — 16JT PIC Absorption Chiller Electrical Schematic (Slave PSIO Output)40

Fig. 25 — 16JT PIC Absorption Chiller Electrical Schematic (PC6400 Module)41

Fig. 26 — 16JT PIC Absorption Chiller Electrical Schematic (First 8-Input Module)42

Fig. 27 — 16JT PIC Absorption Chiller Electrical Schematic (Second 8-Input Module)43

Fig. 28 — 16JT PIC Absorption Chiller Electrical Schematic (Third 8-Input Module)44

Fig. 29 — 16JT PIC Absorption Chiller Electrical Schematic (Six-Pack Relay Board 1)45

Fig. 30 — 16JT PIC Absorption Chiller Electrical Schematic (Six-Pack Relay Board 2)46

Fig. 31 — 16JT PIC Absorption Chiller Electrical Schematic (Wiring Diagram for 120 V Circuit)47

Fig. 32 — 16JT PIC Absorption Chiller Electrical Schematic (Communication Detail)48

Fig. 33 — 16JT PIC Absorption Chiller Electrical Schematic (Communication Detail, cont)49

The smaller vessel above the evaporator/absorber assem-bly is the high-stage generator. Here, approximately half ofthe diluted solution from the absor

Fig. 34 — 16JT PIC Absorption Chiller Electrical Schematic (Terminal board Layout)50

Water/Brine Reset — Three chilled water or brine tem-perature reset types are available and can be viewed or modi-fied on CONFIG screen under the EQUIP

Table 5 — Safety Contacts and Alert LimitsMONITORED PARAMETER LIMIT APPLICABLE COMMENTSTEMPERATURE SENSORSOUT OF RANGE: 5K OHM−40-245 F ( −40-118.3 C)

TO CHANGE THE PASSWORD — The password may bechanged from the LID CONFIG screen.1. Press the MENUand SERVICE softkeys. Enter yourpassword and highlight

9. Press SELECT to select the month, day, orduration you wish to modify.10. Press INCREASE or DECREASE to change the se-lected item.11. Press ENTER to

To view other devices, access the ATTACH TO NET-WORK DEVICE table. Highlight the desired device num-ber. Press the SELECTsoftkey to change the bus num

3. Verify the correct overload and fuse sizes for all motors.Refer to the 16JT Product Data and Installation Instruc-tions manuals for current draw an

Chiller Evacuation — When the chiller’s absolute pres-sure is greater than 1 in. (25 mm) of mercury absolute, thechiller must be evacuated as describe

BRODEF — From the BRODEF screen, you can:• Configure the outside air temperature and humidity sen-sors, if installed.• Define the start and end of dayli

INITIAL REFRIGERANT CHARGING — The refrigerantcharge must be de-ionized water that meets Carrier Speci-fication No. RW01-19. Do not use tap water. Use

LEGEND1—Steam Inlet2—High-Stage Generator (G1)3—Low-Stage Generator (G2)4—Cooling Water Outlet5—Condenser6—Rupture Disc7—Purge Storage Chamber8—Contro

Table 7 — 16JT Functions and Devices Tested by the PIC Control TestTEST FUNCTION/DEVICE TESTED1. Automated Control Test Performs tests 2 thru 82. PC64

INITIAL START-UPThe following start-up procedures are used for absorptionchillers with PIC control systems. During initial start-up, thereis a period

Final Refrigerant Charge Adjustment — The ad-justment should be made after:1. Chiller is operating with stable temperatures at 40 to 100%of full load.

JOB NAME: LOCATION:CHILLER MODEL NO: S/N:OPERATION HOURS: TAKEN BY:DATE: JOB NO.:ITEMNO.DATAITEM*RECORD1RECORD2RECORD3RECORD4REOORD5RECORD6RECORD7RECO

ITEMNO.DATAITEM*RECORD1RECORD2RECORD3RECORD4REOORD5RECORD6RECORD7RECORD8GENERATOR:24Strong LiBr LeavingG1 Temperature25Strong LiBrLeaving HX126Strong

Table 10 — How to Obtain Data for Log (Fig. 38)ITEM NO. HOW OBTAINED UNITS1 Default screen (CHW_IN) or EVAPSTAT screen DEG F (DEG C)2 Default screen (

1.351.301.251.201.151.101.05VAPOR PRESSURE IN INCHES (mm) OF MERCURY ABSOLUTE% OF LITHIUM BROMIDE BY WEIGHT IN SOLUTION4035302520151050SATURATION TEMP

1.661.641.621.601.581.561.541.521.801.781.761.741.721.701.6865605550% LITHIUM BROMIDE BY WEIGHT IN SOLUTIONSATURATION TEMPERATURE IN DEG F (DEG C)VAPO

Check Low Refrigerant Level Operation — Af-ter the chiller has completed a normal shutdown:1. From the LID, access the PUMPSTAT display screen bypress

Pre-Start — Once these conditions are met, the PIC thenperforms a series of pre-start checks to verify that all pre-start alerts and safeties are with

1—Steam Inlet2—High-Stage Generator (G1)3—Low-Stage Generator (G2)4—Condenser5—Cooling Water Condenser Inlet6—Rupture Disc7—Purge Storage Chamber8—Coo

NOPrestart Checks Passed ?YESStart ChilledWater PumpYESNONOYESStart CoolingWater PumpDelay 20 SecondsCooling WaterFLOW = YES?YESNOWATER FLOW VERIFYTim

If a function fails, an alarm displays on the LID with amessage specific to the type of failure. To re-start the start-upsequence, find the cause of the

set to AUTO. the PIC controls the Cycle-Guard™ valve. TheREFRIGERANT PUMP must be ON in order for the CYCLEGUARD VALVE to be OPEN. To view the status

If the STRONG LiBr LVG LOW HX2 temperature is lessthan or equal to 118 F (47.8 C) and the REFRIGERANTLEVEL SENSOR is greater than the CYCLE GUARD LEVE

CONTINUEG1 HIGH LEVELMachine in Warm-upor Run State?NONOYESG1 High Solution Level?YESPersistence Timer Running?NOStart Persistence Timer30 Second Pers

SHUTDOWNCLOSE:Capacity ControlValveNOYESYESChilled Water Flow = YES?YESLow Chilled Water Temp = YES?NOSolution Pump Overload?NOYESRefrigerant Pump Ove

When the chiller is in RECYCLE mode, the chilled waterpump relay stays energized so that the chilled water tem-perature can be monitored for increasin

Start-Up After Extended Shutdown1. Place the Cycle-Guard™ switch on the control panel door(Item 19 in Fig. 10) in the AUTO position.2. Press the LOCAL

Actions After Power Interruption — If the controlpower is interrupted during operation, the chiller stops im-mediately without the normal shutdown seq

Inspect the Heat Exchanger TubesEVAPORATOR — Inspect and clean the evaporator tubes atthe end of the first operating season. The tube condition de-term

LEGENDEA1 — Refrigerant Pump Overload CutoutEA2 — Solution Pump Overload CutoutEA4 — Vacuum Pump Motor OverloadFA1 — Chilled Water Low-Flow CutoutFA2

Absorber Loss Determination — Take absorberloss readings when the chiller is operating with a stabletemperature.1. Make sure that the Cycle-Guard™ val

7. Release chiller pressure, correct all leaks, and retest toensure a proper repair.8. Perform a chiller evacuation.REFRIGERANT TRACER — Use an enviro

Inhibitor — The initial charge of lithium bromide in-cludes a lithium chromate or lithium molybdate inhibitor. Theinhibitor is used in conjunction wit

Refrigerant Charge Adjustment — Check the evapo-rator refrigerant (water) charge after every 6 months of op-eration. An increase in the amount of wate

LEGEND1—Vapor Condensate Temperature Thermistor2—Strong LiBr Leaving High-Temperature Heat Exchanger(HX1) Thermistor3—Strong LiBr Leaving Low-Stage Ge

LEGEND16 — Condensate Temperature from G2 Thermistor17 — G1 Internal Pressure Transducer18 — G1 High Pressure Switch19 — Refrigerant Temperature Therm

25 — Low Chilled Water Temperature Switch26 — Leaving Chilled Water Temperature Thermistor27 — Entering Chilled Water Temperature Thermistor28 — Cooli

Hermetic Pump Inspection — The pumps used onCarrier absorption chillers are hermetic and do not requireseals. Pump motors are cooled by the fluids bein

LEGEND1—Stator Can2—Rotor Liner3—Rotor Core4—Recirculation Passage5—Cap Screw6—Pump Discharge Pipe7—Pump Casing8—Impeller9—Casing Wearing Ring10 — Imp

LEGEND1—Stator Can2—Rotor Liner3—Rotor Core4—Recirculation Passage5—Cap Screw6—Pump Discharge Pipe7—Pump Casing8—Impeller9—Casing Wearing Ring10 — Imp

0 5 10 15 20 25 30 35 40 455055 60 65 70% LITHIUM BROMIDE BY WEIGHT IN SOLUTIONVAPOR PRESSURE IN INCHES OF MERCURY ABSOLUTESOLUTION TEMPERATURE F (C)3

LEGEND1—Stator Can2—Rotor Liner3—Rotor Core4—Recirculation Passage5—Cap Screw6—Pump Discharge Pipe7—Pump Casing8—Impeller9—Casing Wearing Ring10 — Imp

DECRYSTALLIZATION USING THE PIC CONTROLS —If crystallization occurs, it generally takes place in the shellside of the low-temperature heat exchanger a

When desolidification is complete, release manual controlof the target capacity valve by pressing the MENU,STATUS, and MAINSTAT softkeys. Highlight TAR

Table 11 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting GuidesA. SHUTDOWN WITH ON/OFF/RESET-OFFPRIMARY MESSA

Table 11 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)D. PRESTART FAILURESPRIMARY MESSAGE SEC

Table 11 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)G. WARM-UP FAILURESPRIMARY MESSAGE SECO

Table 11 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)K. OUT OF RANGE SENSORSPRIMARYMESSAGESE

Table 11 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)L. PROTECTIVE LIMIT FAULTSPRIMARYMESSAG

Table 11 — LID Primary and Secondary Messages and Custom Alarm/Alert Messageswith Troubleshooting Guides (cont)M. MACHINE ALERTSPRIMARY MESSAGE SECOND

Table 12 — Additional Problems/Symptoms and Their Probable Causes and RemediesPROBLEM/SYMPTOM PROBABLE CAUSE REMEDYChiller Will Not Start orShuts Down