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Carrier| Commercial Systems North America
19XR EVERGREEN®

19XR EVERGREEN®

Product catalog summary

Introduction
Carrier's Evergreen® centrifugal chillers are engineered for high efficiency and environmental sustainability, using non-ozone depleting HFC-134a refrigerant to comply with environmental regulations and minimize global warming potential.

Key Features

Refrigerant and Leak Management: Utilizes HFC-134a with a low annual leak rate of 0.1%, allowing the entire refrigerant charge to be stored within the chiller to reduce leak risks during maintenance.
Efficiency: Features a variable frequency drive (VFD) for optimized compressor operation, reducing power consumption and improving integrated part load values (IPLV).
Environmental Commitment: The use of HFC-134a supports a chlorine-free, long-term solution unaffected by refrigerant phaseouts.
Reliability: Incorporates a simple, single-stage positive-pressure compressor and ASME-constructed heat exchangers for enhanced reliability.
Design and Construction: Modular construction allows easy disassembly and reassembly, ideal for replacement projects, with a positive pressure design reducing chiller size.

Optional Features

Refrigerant Isolation Valves: Facilitates refrigerant storage within the chiller during servicing.
Pumpdown Unit: Minimizes refrigerant emissions during service.
Seismic Kit: Available to meet seismic qualification requirements.

Technical Specifications

Hermetic Compressor: Single-stage design with aerodynamically contoured impellers for improved efficiency.
Heat Exchanger: ASME-certified design to prevent leaks and enhance reliability.
Microprocessor Control: Direct digital control with a user-friendly interface for extensive monitoring and diagnostics.

Conclusion
The Evergreen® chillers by Carrier offer a high-efficiency, environmentally friendly solution for chilled water applications, focusing on reliability, ease of maintenance, and compliance with modern environmental standards.

Overview
The document details technical specifications for the 19XR and 19XRV series of high-efficiency hermetic centrifugal liquid chillers, including compressor frame sizes, motor codes, efficiency, voltage codes, and compliance with standards.

Compressor Frame Sizes
Compressor frame sizes range from Frame 1 to Frame 8, with specific size ranges indicated by the first digit of the compressor code.

Motor Codes and Efficiency
Motors are categorized by efficiency (High Efficiency 'H' and Standard Efficiency 'S') and voltage codes, specifying the volts-phase-hertz configuration.

Special Order Indicator
Distinguishes between standard and special order configurations, with 'S' indicating a special order.

Chiller Description
The 19XR is a high-efficiency hermetic centrifugal liquid chiller, while the 19XRV is an ultra-high-efficiency variable speed version.

Compliance and Certification
The chillers meet ASME 'U' Stamp and AHRI performance certification standards and comply with seismic requirements.

Compressor Components
Includes a detailed legend of compressor components such as motor stator, rotor, bearings, gears, and oil system components.

Chiller Components
Provides a detailed legend of chiller components, including guide vane actuators, temperature thermistors, and refrigerant charging valves.

Compressor and Motor Weights
Includes tables detailing the weights of compressor components for both standard and high-efficiency motors across different frame sizes and voltage categories.

Technical Document Summary

1. Specifications and Weights
Details specifications for waterbox covers used in cooling and condensing systems, including weights for various configurations.

2. Options and Accessories
Lists options and accessories for the 19XR and 19XRV chillers, such as variable frequency drives, marine waterboxes, and seismic kits.

3. Starter and VFD Features
Outlines features and options for unit-mounted starters and VFDs, including overload protection and digital displays.

4. Dimensions
Provides dimensions for the 19XR chillers, emphasizing service access and overhead clearance.

5. Electrical Data
Details electrical specifications for auxiliary components, including power supply requirements.

6. Microprocessor Controls
Describes the control system, highlighting features like diagnostic checks and compatibility with the Carrier Comfort Network (CCN).

Insulation Requirements
Field-installed insulation is required for waterbox covers, with additional insulation needed in high humidity locations.

Condensation vs. Relative Humidity
Provides a table of condensation levels at different room temperatures and humidity levels.

System Description
Describes the chiller's microprocessor-controlled, single-stage, semi-hermetic centrifugal compressor using HFC-134a refrigerant.

Quality Assurance
Chiller performance must comply with AHRI and ANSI/ASHRAE standards and be UL certified.

Delivery, Storage, and Handling
Units are shipped with factory-installed piping and wiring, charged with oil and refrigerant.

Warranty
Includes parts and labor for one year post start-up or 18 months from shipment, with a five-year refrigerant warranty.

Equipment Specifications
The chiller is factory-assembled with components like compressor, motor, starter, and control system.

Motor Specifications
The motor is semi-hermetic, liquid refrigerant cooled, and suitable for specified voltage.

Cooler and Condenser
Both are shell and tube type with high-performance tubing, designed for easy maintenance.

Refrigerant Flow Control
Utilizes a float-type metering valve for efficient refrigerant management.

Controls, Safeties, and Diagnostics
Features a microprocessor control center with monitoring and diagnostics capabilities.

Pump Control
Initiates the start of water pumps upon compressor start request.

Ramp Loading
Controls guide vane opening during chilled water temperature pulldown.

Chilled Water Reset
Allows chilled water temperature set point reset based on external signals.

Demand Limit
Limits compressor amp draw to rated load amps or a lower value.

Controlled Compressor Shutdown
Configurable for soft stop, with a display message indicating shutdown progress.

Safeties
Automatic shutdown occurs under conditions like motor overcurrent and high condenser pressure.

Diagnostics and Service
Includes a self-diagnostic controls test and manual tests for individual components.

Multiple Chiller Control
Standard controls include a two-chiller lead/lag and third chiller standby system.

Electrical Requirements
Contractors must supply and install necessary electrical components and wiring.

Piping Requirements
Pressure gauges must be installed in accessible locations on piping adjacent to the chiller.

Vibration Isolation
Neoprene isolator pads are provided for mounting equipment on a level surface.

Start-up
A factory-trained representative performs start-up procedures.

Special Features
Includes accessories like soleplate packages and sound insulation kits.

Specifications

Drive Performance: Manufacturer must provide specific drive performance at jobsite ambient temperature and elevation.
User Interface: A single display for programming and displaying VFD and chiller parameters.
VFD Performance: Must meet IEEE-519 requirements for THD and TDD, with a full load efficiency of at least 97%.
Electrical Service: Includes input circuit breaker and control power transformer.
Discrete Outputs: Provided for chilled water pump, condenser water pump, and alarm status.
Analog Output: A 4 to 20 mA output for head pressure reference.
Protection: Includes under-voltage, over voltage, and phase loss protection.
Testing: VFD must be factory mounted, wired, and tested on the chiller before shipment.

Design

VFD Design: Refrigerant cooled, microprocessor-based, pulse width modulated design.
Enclosure: NEMA 1 cabinet with lockable doors.
Heat Sink: Refrigerant cooled, suitable for ASME design working pressure.
VFD Rating: Suitable for nameplate voltage ±10% and continuous operation at 100% of nameplate amps.

Additional Features

Discrete Outputs: Provided for circuit breaker shunt trip and alarm status.
Protection: Includes motor overload and over temperature protection.

Manufacturer's Rights: Manufacturer reserves the right to change specifications or designs without notice.

Catalog excerpts

Product Data EVERGREEN® 19XR,XRV High-Efficiency Hermetic Centrifugal Liquid Chiller 50/60 Hz HFC-134a 200 to 1500 Nominal Tons (703 to 5275 kW) ® evergrn Carrier’s Evergreen® centrifugal chillers offer: • The use of non-ozone depleting refrigerant HFC-134a, which is not affected by scheduled refrigerant phaseouts • An annual leak rate of 0.1%, the lowest published in the industry • The ability to store the entire charge of refrigerant inside the chiller, minimizing the chance of leaks during refrigerant transfer for maintenance • Hermetic compression • Refrigerant-cooled VFD (variable frequency drive) (19XRV only) • Modular construction • Positive pressure design • Variable diffuser optimization logic, which can improve the integrated part load values (IPLV) (available on compressor frame sizes 4 and 5 with diffuser control enabled) The Carrier-designed Evergreen family of chillers achieve superior efficiencies without compromising the environment. The Evergreen chillers superior efficiencies are obtained at true operating conditions. Therefore, the effects of potential direct or indirect global warming are greatly diminished. * Meets IBC 2006, ASCE-7-05, CBC 2007, and OSHPD seismic requirements. Copyright 2011 Carrier Corporation High efficiency Today’s owners of chilled water plants demand high efficiency from their chillers. Per AHRI (Air Conditioning, Heating and Refrigeration Institute) 550/ 590, chillers operate at design conditions less than one percent of the time.

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Features/Benefits (cont) As a result, superior part load efficiency is required for today’s chilled water applications. The Evergreen® 19XRV centrifugal chiller, equipped with a factoryinstalled variable speed drive, maximizes chiller efficiency by optimizing compressor operation. Electric power consumption drops dramatically when the motor speed slows. The 19XRV chiller delivers industry-leading integrated part load values (IPLV). The Evergreen chiller with diffuser control enabled (available on compressor frame sizes 4 and 5) improves the chiller’s part load efficiency by increasing the diffuser...

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with air-cooled designs of the same type. In addition, Carrier’s hermetic design eliminates: • Compressor shaft seals that require maintenance and increase the likelihood of refrigerant leaks • Shaft alignment problems that occur with open-drive designs during start-up and operation, when equipment temperature variations cause thermal expansion • High noise levels that are common with air-cooled motors, which radiate noise to the machine room and adjacent areas • Machine room cooling requirements associated with air-cooled motors, which dissipate heat to the machine room Compressors are 100%...

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Features/Benefits (cont) Configuration data backup in nonvolatile memory provides protection during power failures and eliminates time consuming control reconfiguration. 19XR refrigeration cycle The compressor continuously draws refrigerant vapor from the cooler at a rate set by the amount of guide vane opening. As the compressor suction reduces the pressure in the cooler, the remaining refrigerant boils at a fairly low temperature (typically 38 to 42 F [3 to 6 C]). The energy required for boiling is obtained from the water flowing through the cooler tubes. With heat energy removed, the water...

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Model number nomenclature Description 19XR — High Efciency Hermetic Centrifugal Liquid Chiller 19XRV — Ultra High Efficiency Variable Speed Hermetic Centrifugal Liquid Chiller Cooler Size 10-12 (Frame 1 XR) 15-17 (Frame 1 XR) 20-22 (Frame 2 XR) 30-32 (Frame 3 XR) 35-37 (Frame 3 XR) 40-42 (Frame 4 XR) 45-47 (Frame 4 XR) 50-54 (Frame 5 XR) 5A-5C (Frame 5 XR)* 55-59 (Frame 5 XR) 5F-5H (Frame 5 XR)* 5K-5R (Frame 5 XR) 5T-5Z (Frame 5 XR) 60-64 (Frame 6 XR) 6K-6R (Frame 6 XR) 65-69 (Frame 6 XR) 6T-6Z (Frame 6 XR) 70-74 (Frame 7 XR) 7K-7R (Frame 7 XR) 75-79 (Frame 7 XR) 7T-7Z (Frame 7 XR) 80-84 (Frame...

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Chiller components COMPRESSOR COMPONENTS 1 LEGEND Motor Stator 9 Motor Rotor 10 Motor Shaft Journal Bearings 11 Low Speed Bull Gear 12 High Speed Shaft Thrust Bearing 13 High Speed Shaft Bearing 14 Variable Inlet Guide Vanes 15 Impeller Shroud 16 Impeller Pipe Diffuser High Speed Pinion Gear Oil Heater High Speed Shaft Bearing Oil Pump Motor Oil Pump Cover Oil Filter

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LEGEND Guide Vane Actuator Suction Elbow International Chiller Visual Control (ICVC) Chiller Identification Nameplate Cooler, Auto Reset Relief Valves Cooler Pressure Transducer Condenser In/Out Temperature Thermistors Cooler In/Out Temperature Thermistors Refrigerant Charging Valve Typical Flange Connection Oil Drain Valve Oil Level Sight Glasses Refrigerant Oil Cooler (Hidden) Auxiliary Power Panel Motor Housing REAR VIEW LEGEND Condenser Auto. Reset Relief Valves Motor Circuit Breaker Solid-State Starter Control Display Unit-Mounted Starter or VFD (Optional) Solid-State Starter Shown Motor...

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Physical data 19XR COMPRESSOR AND MOTOR WEIGHTS*— STANDARD AND HIGH-EFFICIENCY MOTORS COMPRESSOR FRAME SIZE 2† ENGLISH 60 Hz MOTOR Compressor CODE Stator Weight** Weight†† (lb) (lb) End Bell Compressor Cover Stator Weight** Weight Weight†† (kg) (lb) (kg) End Bell Cover Weight (kg) STANDARD-EFFICIENCY MOTORS / LOW VOLTAGE (200-575v) BDS HIGH-EFFICIENCY MOTORS / LOW VOLTAGE (200-575v) BDH *Total compressor weight is the sum of the compressor aerodynamic components (compressor weight column), stator, rotor, and end bell cover weights. †Compressor size number is the first digit of the compressor...

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19XR COMPRESSOR AND MOTOR WEIGHTS*— STANDARD AND HIGH-EFFICIENCY MOTORS (cont) COMPRESSOR FRAME SIZE 3† ENGLISH 60 Hz MOTOR Compressor CODE Stator Weight** Weight†† (lb) (lb) End Bell Compressor Cover Stator Weight** Weight Weight†† (kg) (lb) (kg) End Bell Cover Weight (kg) STANDARD-EFFICIENCY MOTORS / LOW VOLTAGE (200-575v) CBS HIGH-EFFICIENCY MOTORS / LOW VOLTAGE (200-575v) CBH *Total compressor weight is the sum of the compressor aerodynamic components (compressor weight column), stator, rotor, and end bell cover weights. †Compressor size number is the first digit of the compressor code. See...

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19XR EVERGREEN®

19XR EVERGREEN®

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