Carrier 19XL specifications Contents

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CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

ABBREVIATIONS AND EXPLANATIONS . . . . . . . 4

CHILLER FAMILIARIZATION . . . . . . . . . . . . . . . . . . 5

Chiller Information Plate . . . . . . . . . . . . . . . . . . . . . . 5

System Components . . . . . . . . . . . . . . . . . . . . . . . . . 5

Cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Motor-Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Control Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Factory-Mounted Starter (Optional) . . . . . . . . . . . . 5

Storage Vessel (Optional) . . . . . . . . . . . . . . . . . . . . . 5

REFRIGERATION CYCLE . . . . . . . . . . . . . . . . . . . . . 5

MOTOR/OIL REFRIGERATION

COOLING CYCLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

LUBRICATION CYCLE . . . . . . . . . . . . . . . . . . . . . . . 8,9

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Oil Reclaim System . . . . . . . . . . . . . . . . . . . . . . . . . . 9

·DURING NORMAL CHILLER OPERATION

·DURING LIGHT LOAD CONDITIONS

STARTING EQUIPMENT . . . . . . . . . . . . . . . . . . . . 10,11

Unit Mounted Solid-State Starter

(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Unit Mounted Wye-Delta Starter

(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-39 De®nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

·ANALOG SIGNAL

·DIGITAL SIGNAL

·VOLATILE MEMORY

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 PIC System Components . . . . . . . . . . . . . . . . . . . . 11

·PROCESSOR MODULE (PSIO)

·STARTER MANAGEMENT MODULE (SMM)

·LOCAL INTERFACE DEVICE (LID)

·6-PACK RELAY BOARD

·8-INPUT MODULES

·OIL HEATER CONTACTOR (1C)

·OIL PUMP CONTACTOR (2C)

·HOT GAS BYPASS CONTACTOR RELAY (3C) (Optional)

·CONTROL TRANSFORMERS (T1-T4)

·CONTROL AND OIL HEATER VOLTAGE SELECTOR (S1)

LID Operation and Menus . . . . . . . . . . . . . . . . . . . 14

·GENERAL

·ALARMS AND ALERTS

·MENU STRUCTURE

·TO VIEW POINT STATUS

·OVERRIDE OPERATIONS

·TIME SCHEDULE OPERATION

·TO VIEW AND CHANGE SET POINTS

·SERVICE OPERATION

PIC System Functions . . . . . . . . . . . . . . . . . . . . . . . 28

·CAPACITY CONTROL

·ENTERING CHILLED WATER CONTROL

·DEADBAND

·PROPORTIONAL BANDS AND GAIN

·DEMAND LIMITING

·CHILLER TIMERS

·OCCUPANCY SCHEDULE

Safety Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

· SHUNT TRIP

Default Screen Freeze . . . . . . . . . . . . . . . . . . . . . . . 29

Page

Motor Cooling Control . . . . . . . . . . . . . . . . . . . . . . . 29

Ramp Loading Control . . . . . . . . . . . . . . . . . . . . . . 31

Capacity Override . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

High Discharge Temperature Control . . . . . . . . . 32

Oil Sump Temperature Control . . . . . . . . . . . . . . . 32

·PSIO SOFTWARE VERSIONS 08 AND LOWER

·PSIO SOFTWARE VERSIONS 09 AND HIGHER

Oil Cooler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Remote Start/Stop Controls . . . . . . . . . . . . . . . . . . 32

Spare Safety Inputs . . . . . . . . . . . . . . . . . . . . . . . . . 32

· SPARE ALARM CONTACTS

Condenser Pump Control . . . . . . . . . . . . . . . . . . . . 32

Condenser Freeze Protection . . . . . . . . . . . . . . . . 32

Tower Fan Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Auto. Restart After Power Failure . . . . . . . . . . . . 33

Water/Brine Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

·RESET TYPE 1

·RESET TYPE 2

·RESET TYPE 3

Demand Limit Control, Option

(Requires Optional 8-Input Module) . . . . . . . . . . 33

Surge Prevention Algorithm . . . . . . . . . . . . . . . . . 33

Surge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Lead/Lag Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

·COMMON POINT SENSOR INSTALLATION

·CHILLER COMMUNICATION WIRING

·LEAD/LAG OPERATION

·FAULTED CHILLER OPERATION

·LOAD BALANCING

·AUTO. RESTART AFTER POWER FAILURE

Ice Build Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

·ICE BUILD INITIATION

·START-UP/RECYCLE OPERATION

·TEMPERATURE CONTROL DURING ICE BUILD

·TERMINATION OF ICE BUILD

·RETURN TO NON-ICE BUILD OPERATIONS

Attach to Network Device Control . . . . . . . . . . . . 37

·CHANGING REFRIGERANT TYPES

·ATTACHING TO OTHER CCN MODULES

Service Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

·TO LOG ON

·TO LOG OFF

·HOLIDAY SCHEDULING

START-UP/SHUTDOWN/RECYCLE

SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39-41

Local Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Shutdown Sequence . . . . . . . . . . . . . . . . . . . . . . . . 40

Automatic Soft-Stop Amps Threshold

(PSIO Software Version 09 and Higher) . . . . . . 40

Chilled Water Recycle Mode . . . . . . . . . . . . . . . . . 40

Safety Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

BEFORE INITIAL START-UP . . . . . . . . . . . . . . . . 41-54

Job Data Required . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . 41

Using the Optional Storage Tank

and Pumpout System . . . . . . . . . . . . . . . . . . . . . . . 41

Remove Shipping Packaging . . . . . . . . . . . . . . . . 41

Open Oil Circuit Valves . . . . . . . . . . . . . . . . . . . . . . 41

Tighten All Gasketed Joints and

Guide Vane Shaft Packing . . . . . . . . . . . . . . . . . . 41

Check Chiller Tightness . . . . . . . . . . . . . . . . . . . . . 41

Refrigerant Tracer . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Leak Test Chiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Standing Vacuum Test . . . . . . . . . . . . . . . . . . . . . . 43

Chiller Dehydration . . . . . . . . . . . . . . . . . . . . . . . . . 47

Inspect Water Piping . . . . . . . . . . . . . . . . . . . . . . . . 47

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Contents Start-Up, Operation, and Maintenance Instructions Safety ConsiderationsContents Contents Introduction Abbreviations and ExplanationsMOTOR/OIL Refrigeration Cooling Cycle Chiller FamiliarizationRefrigeration Cycle 19XL Rear View Condenser In/Out Temperature Sensors Take-Apart Rabbet Fit ConnectorCooler In/Out Temperature Sensors Cooler Pressure Schrader FittingLubrication Cycle Refrigerant Motor Cooling and Oil Cooling CyclesLubrication System Starting Equipment Unit-Mounted Solid-State Starter OptionalMajor PIC Components Panel Locations DenitionsControls PIC Component Panel19XL Controls and Sensor Locations Pressure Transducer, TypicalPower Panel with Options Control and OIL Heater Voltage Selector S1Select LID Operation and Menus FigGeneral − Example of Point Status Screen Status01 Override OperationsExample of Time Schedule Operation Screen 19XL Menu Structure 19XL Service Menu Structure 19XL Service Menu Structure Setpoint Example of Set Point ScreenExample 1 Ð STATUS01 Display Screen Description Range Units Reference Point Name Alarm HistoryLID Screens Menu Status SelectExample 4 Ð Setpoint Display Screen Example 2 Ð STATUS02 Display ScreenExample 3 Ð STATUS03 Display Screen MenuECW Control Option Example 5 Ð Configuration Config Display ScreenExample 6 Ð LEAD/LAG Configuration Display Screen ICE Build TerminationExample 7 Ð SERVICE1 Display Screen Example 9 Ð SERVICE3 Display Screen Example 8 Ð SERVICE2 Display ScreenSpare Alert Enable Menu ServiceDischarge Temperature Example 10 Ð Maintenance MAINT01 Display ScreenExample 11 Ð Maintenance MAINT02 Display Screen Bearing TemperatureDescription RANGE/STATUS Units Reference Point Name Example 12 Ð Maintenance MAINT03 Display ScreenExample 13 Ð Maintenance MAINT04 Display Screen PIC System Functions Page Protective Safety Limits and Control Settings Capacity Overrides Page Page Hgbp Lead/Lag ControlECW Hot Gas BypassPage Ice Build Control Cent CapacityPage Example of Attach to Network Device Screen To LOG onSTART-UP/SHUTDOWN/RECYCLE Sequence FigRecycle Restart Delta T Job Data Required Using the Optional Storage Tank and PumpoutBefore Initial START-UP Equipment Required19XL Leak Test Procedures Page Ð HCFC-22 Pressure Ð Temperature F Ð HCFC-22 Pressure Ð Temperature CTemperature Pressure Ð HFC-134a Pressure Ð Temperature FÐ HFC-134a Pressure Ð Temperature C Page Inspect Wiring Check Optional Pumpout Compressor Water PipCheck Starter MECHANICAL-TYPE StartersBenshaw, Inc. Solid-State Starter Power Stack BENSHAW, INC. SOLID-STATE StarterPower Up the Controls and Check the Oil Heater Set Up Chiller Control CongurationLoad Surge Prevention Occurs TOO Soon Occurs TOO Late Amps Correction Factors For 19XL Motors Volt Motor CodeControl Test Menu Functions Charge Refrigerant into Chiller19XL Chiller Equalization Without PUMP- OUT Unit Tests to be Devices Tested PerformedCooler Refrigerant Charges19XL Total Refrigerant Charge SizeCheck Rotation Initial START-UPDry Run to Test Start-Up Sequence Operating Instructions Check Oil Pressure and Compressor StopCalibrate Motor Current Operator DutiesTo Stop the Chiller Plant Transfer Refrigerant from Storage Tank to Chiller Pumpout and Refrigerant Transfer ProceduresOperating the Optional Pumpout Compressor TstatChillers with Isolation Valves Transfer the Refrigerant from Chiller to Storage TankReturn Refrigerant to Normal Operating Conditions General MaintenanceTest After Service, Repair, or Major Leak Ð If Weekly Maintenance Guide Vane Actuator LinkageTo Change the OIL Scheduled MaintenanceCheck Safety and Operating Controls Monthly Compressor Bearing and Gear Mainten Inspect the Heat Exchanger TubesOptional Pumpout System Controls Troubleshooting Guide MAINT03 MAINT01MAINT02 MAINT04Shutdown with ON/OFF/RESET-OFF Timing OUT or Timed OUTAutorestart in Progress Recycle ShutdownNormal or AUTO.-RESTART LOW Chilled Water Normal RUN with RESET, TEMPERATURE, or Demand Compressor Jumpstart and Refrigerant ProtectionLimited Normal RUN Overrides Active AlertsOUT-OF-RANGE Sensor Failures Chiller Protect Limit Faults Protective LimitChiller Alerts Spare Sensor Alert MessagesOther PROBLEMS/MALFUNCTIONS DESCRIPTION/MALFUNCTION Probable CAUSE/REMEDYÐ Thermistor Temperature F vs Resistance/Voltage Drop Temperature Voltage Resistance DropÐ Thermistor Temperature C vs Resistance/Voltage Drop Input Options Module Control ModulesModule Address Options Module Starter Management Module SMM FigProcessor Module Psio Fig Installation Switch Options Setting ModuleTypical Benshaw, Inc. Solid-State Starter internal View Page Page RV1 Benshaw, Inc. Solid-State Starter Troubleshooting GuideProblem Probable Causes Area of Correction SCRCooler Heat Exchanger DataAdditional Data for Marine Waterboxes CondenserCondensers Waterbox Cover WeightsCoolers 1034 kPaOptional Pumpout System Electrical Data Compressor/Motor WeightsCompressor Weights Compressor Fits and Clearances Ft-lb Compressor Assembly TorquesDescription Torque ``ZComm CLRCOM EXTPage CLR Page Chiller Power Panel, Starter Assembly Motor Wiring Schematic Chiller Power Panel, Starter Assembly Motor Wiring Schematic GFR PMRPOT HPSTypical Wye-Delta Unit Mounted Starter Wiring Schematic Index Index Copyright 1996 Carrier Corporation

19XL specifications

The Carrier 19XL is a highly regarded commercial heating and cooling solution, designed to provide optimum performance and energy efficiency in various applications. This rooftop unit is engineered to meet the diverse needs of businesses, making it an ideal choice for those requiring reliable climate control in their facilities.

One of the standout features of the Carrier 19XL is its advanced cooling and heating capabilities. The unit utilizes a high-efficiency scroll compressor that ensures a quieter operation and improved reliability. The system can operate across a wide range of temperatures, making it versatile for various climates. Additionally, it offers both cooling and heating options, allowing for year-round comfort.

Energy efficiency is a focal point of the 19XL design. With an impressive Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF), this unit not only helps reduce energy costs but also supports environmental sustainability initiatives. The unit is equipped with environmentally friendly refrigerants, further contributing to lower greenhouse gas emissions.

The Carrier 19XL features a user-friendly control system, allowing for easy monitoring and management of the unit's performance. This control system is designed to maximize energy savings, offering features such as demand control ventilation and integrated economizers that facilitate the use of outdoor air for cooling, reducing reliance on mechanical systems when conditions allow.

Construction-wise, the Carrier 19XL is built to withstand tough environmental conditions. Its robust cabinet is made from galvanized steel, providing durability and protection against the elements. The design also includes insulation to minimize noise levels, creating a more comfortable indoor environment.

Maintenance is a key consideration in the design of the 19XL. The unit features accessible service ports and a simplified access panel, allowing technicians to perform routine maintenance with ease. This proactive design helps ensure the longevity of the system and minimizes downtime, keeping operations running smoothly.

In summary, the Carrier 19XL is an exceptional choice for commercial heating and cooling needs. With its energy-efficient features, advanced technology, and durable construction, it stands out as a reliable solution for businesses looking for sustainable climate control options.
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