Trane Centrifugal Water Chillers CVGF User Manual 2

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Centrifugal Water Chillers

Model CVGF

Water-Cooled Hermetic Centrifugal

Refrigeration Capacities from

400 to 1000 Tons (1400〜3510 kW)

50 and 60 Hz

October 2008

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Introduction

Introducing Trane’s Model CVGF Centrifugal Water Chiller

Introduction

The basic gear driven centrifugal water chiller design was introduced in 1976 and has been proven

in thousands of installations. Trane continues to deliver its reliability and energy ﬁ tness commitment

on its newest line of gear-drive centrifugal water chillers, the Model CVGF. The major advantages of

the Model CVGF are:

• High reliability

• Low sound levels

• Compact size

• High efﬁ ciency at a competitive market price

• Designed to use environmentally responsible HFC-134a refrigerant

The Model CVGF chiller is ideal for ofﬁ ce, hospital, school, hotel, retail store and industrial

buildings. TheTrane centrifugal chiller line offers hundreds of individual evaporator-condenser-

compressor combination selections, permitting precise tailoring of the machine capacity to

system requirements. Machine selections can be computer optimized to provide low ﬁ rst cost,

low operating cost, or other criteria important for a particular selection. Centrifugal Water Chiller

computer selection program is certiﬁ ed in accordance with ARI Standard 550/590. Trane Sales

Engineers are available to assist in selecting the optimum machine to satisfy the particular project

requirements.

Turn to the Model CVGF for energy efﬁ ciency provided by the two stage, gear drive centrifugal

water chillers with economizers. The Trane Model CVGF is your choice for energy ﬁ t operation year

after year.

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Contents

Introduction

Features and Beneﬁ ts

Application Considerations

General Data

Jobsite Connections

Controls

Physical Dimensions

Mechanical Speciﬁ cations

Conversion Table

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Features and Beneﬁ ts

Standard CVGF Features

The following features are provided as standard with all Trane Model CVGFchillers:

• Hermetic two-stage centrifugal compressor-motor assembly with integral lubrication system

and economizer cycle

• Evaporator and condenser assembly

• Prewired instrument and control panel

• Oil charge

• Integral oil heaters

• Isolation pads

• Wiring and oil system interconnection to main control panel

• Advance motor protection

• Two-stage gear drive with economized cycle for high efﬁ ciency and high reliability

• Liquid cooled hermetic induction motor; the motor operates at lower temperatures for longer

motor life

Optional Features

Applications

Patents

• Unit and remote wye-delta mounted starters

• Unit mounted, ﬂ oor mounted, and wall mounted solid state starters.

• Across-the-line, Primary Reactor, and Auto Transformer Remote mounted starter for medium/

high voltage

• Marine waterboxes for evaporator and condenser

• Factory-applied thermal insulation

• One-inch deﬂ ection spring isolators for vibration-sensitive installations

• Refrigerant available from a local distributor

• Building automation systems (BAS) Interface

• Factory testing

• Comfort cooling

• Industrial process cooling

• Polygon drive for refrigeration compressor impellers

• Centrifugal compressor sump demister

• Internal oil ﬁ lter

• Thermosiphonic oil cooler

• Compressor height and alignment adjustment

• Oil return using hot gas for motive force

• Centrifugal impeller assembly

• Internal oil ﬁ lter

Oriﬁ ce System

• Simpliﬁ ed oriﬁ ce system with improved part load performance down to 20 percent part load

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Advanced Heat Transfer Surfaces

• Evaporator and condenser tubes use the latest heat transfer surfaces

• Less refrigerant needed due to advanced patented evaporator design

Compact Size

• Designed with the retroﬁ t and replacement market in mind

• The 400 to 500 NTON sizes can ﬁ t through most double-width doors

• Small footprint of the CVGF chiller saves valuable equipment room space

Simple Installation

• Simpliﬁ ed piping; the only water piping required is for the evaporator and condenser

• Simple power connection

• Unit mounted starter eliminates additional jobsite labor requirements

Environmental Features and Beneﬁ ts

Improved Efﬁ ciency:

• High Efﬁ ciency: 0.55 kW/Ton at ARI conditions

• Motor cooling vented to economizer cycle, efﬁ ciency advantage

• HFC-134 optimized inlet guide vanes and impellers for improved cycle efﬁ ciency using

computational ﬂ uid dynamics

Features and Beneﬁ ts

Reduced Emissions:

• Over 30 percent joint reduction in compressor/motor assembly compared to previous designs

• Patented integral heaters imbedded into the compressor casting, no seals no leaks

• Beaded ﬂ at gasket technology instead of O-rings, lower susceptibility to developing leaks

• Minimal NPT pipe threads on chiller system, SAE O-ring boss ﬁ tting, lowerleak potential

• Oil sump internal to compressor/motor assembly with internal pump/motor; eliminates vent and

drain lines, leak prevention

• Patented internal oil ﬁ lter prevents leaks and contamination from pipes; ﬁ lter is isolated and easily

replaced

• Advanced evaporator design minimizes the refrigerant charge; a reduced charge reduces the

exposure to the environment in the event of a catastrophic charge loss

Additional Features and Beneﬁ ts

• Patented polygon attachment instead of a keyed shaft, self-balancing

• Easy to replace motor terminals

• Motor/stator assembly is easily removed; speed assembly can be removed independent of the

high-speed assembly

• Rolling element bearings

• Hydrodynamic bearings

• Advanced evaporator design: no eliminator necessary with an advanced suction bafﬂ e design

• All metric fasteners

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Features and Beneﬁ ts

Tracer AdaptiView

Control Operator Interface

Tracer AdaptiViewTM control is the unit-mounted operator interface with a touch sensitive 12/1"

display. The display presents information through an intuitive navigation system. Alternate

languages are also available for the control panel display.

Tracer AdaptiView

devices on the chiller’s communications link. Tracer AdaptiView

control receives information from and communicates information to the other

control performs the Leaving

Chilled Water Temperature and Limit Control algorithms.

• Data graphs

• Mode overrides

• Status (all subsystems) with animated graphics

• Auto/Stop commands

• 50 diagnostics

• ASHRAE chiller log

• Setpoint adjustment (daily user points)

Tracer AdaptiView

control can be connected to the service tool using a standard USB type cable.

The connections is located on the side of the control panel, along with a power outlet for a laptop

PC power supply.

a At-a-glance status

On highly-readable color display showing key operating parameters of major chiller components

b Intuitive navigation

Helps operators access data and alarms for quick and accurate response and resolution

c Reports

Summarize data for clear understanding and interpretation

d Graphs

Visualize trend data for troubleshooting and ﬁ ne-tuning

e Adaptive control

Algorithms built into Tracer AdaptiviewTM pre-empt chiller disruptions during rapidly changing conditions

f Open protocol ﬂ exibility

Bacnet, Lontalk, and Modbus with no gateways

g Adjustable viewing angle

For all operators in close quarters via ergonomic arm

h Water-resistant

To cleaning overspray; weather-resistant for outdoor mounting with optional cover

i Security levels

Limit access to designated, qualiﬁ ed staff members

j 24 selectable languages

Convert the Tracer Adaptiview deployment including simpliﬁ ed chinese, traditional chinese, japanese, korean, thai, etc.

user-centered design for global

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Tracer TU Interface

Features and Beneﬁ ts

The Tracer chiller controller adds a level of sophistication better served by a PC application to improve

service technician effectiveness and minimize chiller downtime. Tracer AdaptiView™ control is intended

to serve only typical daily tasks. The portable PC-based service-tool software, Tracer TU™,

supports service and maintenance tasks.

Tracer TU serves as a common interface to all Trane chillers, and will customize itself

based on the properties of the chiller with which it is communicating. Thus, the service technician

learns only one service interface.

The panel bus is easy to troubleshoot using LED sensor veriﬁ cation. Only the defective device is

replaced. Tracer TU can communicate with individual devices or groups of devices.

All chiller status, machine conﬁ guration settings, customizable limits, and up to 100 active or

historic diagnostics are displayed through the service-tool software interface.

LEDs and their respective Tracer TU indicators visually conﬁ rm the availability of each connected

sensor, relay, and actuator.

Tracer TU is designed to run on a customer’s laptop, connected to the AdaptiView control panel

with a USB cable.

Hardware requirements for Tracer TU:

• CD-ROM

• 1 GB RAM

• 1024 x 768 resolution

• Ethernet 10/100 Lan card

• Windows® XP Pro or Vista

• Pentium IV or higher processor

• An available USB port (USB 2.0)

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Features and Beneﬁ ts

Tracer AdaptiViewTM Controller

Today's centrifugal chillers offer predictive controls that anticipate and compensate for load

changes. Other control strategies made possible with the Tracer AdaptiView

Feedforward Adaptive Control

Feedforward is an open-loop, predictive control strategy designed to anticipate and compensate

for load changes. It uses evaporator entering-water temperature as an indication of load change.

This allows the controller to respond faster and maintain stable leaving-water temperatures.

Soft Loading

The chiller controller uses soft loading except during manual operation. Large adjustments

due to load or setpoint changes are made gradually, preventing the compressor from cycling

unnecessarily. It does this by internally ﬁ ltering the setpoints to avoid reaching the differential-to-

stop or the current limit. Soft loading applies to the leaving chilled-water temperature and current-

limit setpoints.

Multi-Objective Limit Arbitration

controls are:

There are many objectives that the controller must meet, but it cannot satisfy more than one

objective at a time. Typically, the controller’s primary objective is to maintain the evaporator leaving-

water temperature.

Whenever the controller senses that it can no longer meet its primary objective without triggering

a protective shutdown, it focuses on the most critical secondary objective. When the secondary

objective is no longer critical, the controller reverts to its primary objective.

Fast Restart

The controller allows the CenTravac chiller to restart during the postlube process. If the chiller shuts

down on a nonlatching diagnostic, the diagnostic has 30–60 seconds to clear itself and initiate a

fast restart. This includes momentary power losses.

Building Automation and Chiller Plant Control

Trane Tracer SummitTM building automation systems

include pre-engineered and ﬂ exible control for

chiller plants. It can control the operation of the

complete installation: chillers, pumps, cooling

towers, isolating valves, air handlers and terminal

units.Trane can undertake full responsibility for an

optimized automation and energy management

for the entire chiller plant.

The main functions are:

• Chiller sequencing: equalizes the number of

running hours of the chillers. Different control

strategies are available depending on the

conﬁ guration of the installation.

• Control of the auxiliaries: includes input/output

modules to control the operation of the various

auxiliary equipments (water pumps, valves,

cooling towers, etc.)

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Features and Beneﬁ ts

• Time of day scheduling: allows the end user to deﬁ ne the occupancy period, i.e. time of the

day, holiday periods and exception schedules.

• Optimization of the start/stop time of the installation: based on the programmed schedule

of occupancy and on the historical temperature records, Tracer Summit

start/stop time of the installation to get the best compromise between energy savings and

comfort of the occupants.

• Soft loading:

satisfy a large chilled-water-loop pull down, thus preventing an overshoot of the actual capacity

required. Unnecessary starts are avoided and the peak current demand is lowered.

Communication capabilities: local, through a PC workstation keyboard Tracer SummitTM

•

can be programmed to send messages to local or remote workstations and or a pager in the

following cases:

—Analog parameter exceeding a programmed value.

—Maintenance warning.

—Component failure alarm.

—Critical alarm messages. In this latter case, the message is displayed until the operator

acknowledges the receipt of the information. From the remote station it is also possible to

access and modify the chiller plant’s control parameters.

• Remote communication through a modem: As an option, a modem can be connected to

communicate the plant operation parameters through voice grade phone lines.

the soft loading function minimizes the number of chillers that are operated to

calculates the optimal

The remote terminal is a PC workstation equipped with a modem and software to display the

remote plant parameters.

Chiller-Tower Optimization

Tracer Summit™ chiller-tower optimization extends Adaptive Control™ to the rest of the chiller

plant. Chiller-tower optimization is a unique control algorithm for managing the chiller and cooling-

tower subsystem. It considers the chiller load and real-time ambient conditions, then optimizes the

tower setpoint temperature to maximize the efﬁ ciency of the subsystem.

Integrated Comfort™ System (ICS)

The onboard Tracer chiller controller is designed to be able to communicate with a wide range of

building automation systems. To take full advantage of the capabilities of the chiller, incorporate

your chiller into a Tracer Summit building automation system.

But the beneﬁ ts do not stop at the chiller plant. At Trane, we realize that all energy used in your

cooling system is important. That is why we worked closely with other equipment manufacturers

to predict the energy required by the entire system. We used this information to create patented

control logic for optimizing the HVAC system efﬁ ciency.

The building owner’s challenge is to tie components and applications expertise into a single

reliable system that provides maximum comfort, control and efﬁ ciency. Trane’s Integrated-Comfort

™ Systems (ICS) are a concept that combines system components, controls and engineering

applications expertise into a single, logical and efﬁ cient system. These advanced controls are fully

commissioned and available on every piece of Trane equipment, from the largest chiller to the

smallest VAV box. As a manufacturer, only Trane offers this universe of equipment, controls and

factory installation and veriﬁ cation.

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Features and Beneﬁ ts

Two-Stage Compressor Widens the Application Range

Why Centrifugal Compressors Surge

Centrifugal compressors produce their pressure differential

(head) by converting the kinetic energy of the gas leaving

the impeller into static pressure. The velocity of this gas is

the result of two components:

• The radial velocity component V

proportional to the refrigerant gas ﬂ ow Q.

• The tangential velocity component V

both impeller diameter D and the rotational speed rpm.

, which is directly

,which is a function of

The length of the resultant vector V is proportional to the

kinetic energy available for conversion to static pressure

in the volute. Consequently, for a given compressor, V

ﬁ xed and V

varies with the cooling load. With the chiller

unloading, the pressure differential between evaporator and

condenser decreases. The compressor matches the new load and the lower “head” by closing the

inlet guide vanes.

This reduces the gas ﬂ ow it draws in and modiﬁ es its direction. Component V

accordingly, the vector diagram shifts and at some point, the balance of forces breaks down.

As pressurized gas rushes backwards through the impeller, the pressure in the gas passages

falls, allowing the compressor to restore the balance of forces. If the process repeats itself, the

compressor is said to surge.

Two-Stage Compressors Surge Less and Later

To produce the same head as a single-stage compressor, two-stage machines use two small

diameter impellers. Component V

single-stage compressor. This results in a better balance of forces at low loads and produces a

machine with a wider unloading capability.

In Trane centrifugal chillers, gas prerotation vanes ahead of the compression stage improve impeller

aerodynamic efﬁ ciency, resulting in smoother unloading and reducing power consumption.

1 - Vr = f (Q)

= f (D, RPM)

2 - V

3 - V = Resultant

4 - rpm 5 - D 6 - Q

decreases

is the same as on each stage, though Vr is the same as on a

The curves show that two-stage compressors surge less and later than single-stage machines.

Intersection point B, when the load line meets the surge area, corresponds to a higher part load

for the single-stage compressor than would be the case with a two-stage compressor. Two stage

machines, therefore, have a wider range of applications.

Typical single-stage compressor performance curve

1 - Load Line 2 - Surge Line 3 - A 4 - B 5 - 40% 6 - 90° Vanes 7 - 100% 8 - Compressor Head 9 - Refrigerant Gas Flow

Typical two-stage compressor performance curve

1 - Load Line 2 - Surge Line 3 - A 4 - B 5 - 20% 6 - 90° 7 - 80° 8 - 70° Vanes 9 - 100% 10 - Compressor Head 11 - Refrigerant Gas Flow

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Condenser Water Limitations

Temperature

Trane centrifugal chillers start and operate over a range of load conditions with controlled water

temperatures. Reducing the condenser water temperature is an effective method of lowering the

chiller power input. However, the effect of lowering the condenser water temperature may cause an

increase in system power consumption.

In many applications Trane centrifugal chillers can start and operate without control of the

condenser water temperature. However, for optimum system power consumption, and for

any applications with multiple chillers, control of the condenser water circuit is recommended.

Integrated control of the chillers, pumps, and towers is easily accomplished with Trane’s AdaptiView

and/or Tracer system.

Chillers are designed to ARI conditions of 29.4°C (85°F), but Trane centrifugal chillers can operate

to a ﬁ ve psig pressure differential between the condenser and evaporator at any steady state load

without oil loss, oil return, motor cooling, or refrigerant hang-up problems. And this differential

can equate to safe minimum entering condenser water temperatures at or below 12.8°C (55°F),

dependent on a variety of factors such as load, leaving evaporator temperature, and component

combinations. Startup below this differential is possible as well, especially with AdaptiView soft start

features

Application Considerations

Water Pumps

Water Flow

Avoid specifying or using 3600-rpm condenser and chilled water pumps. Such pumps may operate

with objectionable noises and vibrations. In addition, a low frequency beat may occur due to the slight

difference in operating rpm between water pumps and centrifugal motors. Where noise and vibration-

free operation are important, Trane encourages the use of 1750 rpm pumps.

Today’s technology challenges ARI’s traditional design of three gpm per ton through the condenser.

Reduced condenser ﬂ ows are a simple and effective way to reduce both ﬁ rst and operating costs

for the entire chiller plant. This design strategy will require more effort from the chiller, but pump

and tower savings will typically offset any penalty. This is especially true when the plant is partially

loaded or condenser relief is available.

In new systems, the beneﬁ ts can include dramatic savings with:

• Size and cost for condenser lines and valves

• Size and cost of the cooling tower

• Size and cost of the water pumps

• Pump energy (30% to 35% reduction)

• Tower fan energy(30% to 35% reduction)

Replacement chiller plants can reap even greater beneﬁ ts from low-ﬂ ow condensers. Because

the water lines and tower are already in place, reduced ﬂ ows would offer a tremendous energy

advantage. Theoretically, a 2 gpm/ton design applied to a system that originally used 3 gpm/ton

would offer a 70% reduction in pump energy. At the same time, the original tower would require a

nozzle change but would then be able to produce about two degrees colder condenser water than

before. These two beneﬁ ts would typically offset any extra effort required by the chiller.

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Application Considerations

Contact your local Trane Sales Ofﬁ ce for information regarding optimum condenser water

temperatures and ﬂ ow rates for a speciﬁ c application.

Water Treatment

The use of untreated or improperly treated water in a chiller may result in scaling, erosion, corrosion,

algae, or slime. It is recommended that the services of a qualiﬁ ed water treatment specialist are

used to determine what treatment, if any, is advisable. Trane assumes no responsibility for the

results of untreated or improperly treated water.

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General Data

Table GD-1 – Model CVGF Description

Model CVGF

Nominal Cooling Capacity

NTON 400 500 500 650 800 1000

Heat Exchanger Size

Evaporator EVSZ 500 500 700 700 1000 1000 Condenser CDSZ 500 500 700 700 1000 1000

Heat Exchanger Bundles

Evaporator EVBS A = Small A = Small A = Small A = Small A = Small A = Small

B = Medium B = Medium B = Medium B = Medium B = Medium B = Medium C = Large C = Large C = Large C = Large C = Large C = Large

D = Extra Large D = Extra Large

Condenser CDBS A = Small A = Small A = Small A = Small A = Small A = Small

B = Medium B = Medium B = Medium B = Medium B = Medium B = Medium C = Large C = Large C = Large C = Large C = Large C = Large

D = Extra Large D = Extra Large

Heat Exchanger Tube

Evaporator EVTM IE25 - 0.635 mm W 25.4 mm Internally Enhanced

(IE25 - 0.025” W 1.00” Internally Enhanced) TE25 - 0.635 mm W19 mm Internally Enhanced (TE25 - 0.025” W 0.75” Internally Enhanced)

CDTM IE28 - 0.711 mm W 25.4 mm Internally Enhanced

(IE28 - 0.028” W 1.00” Internally Enhanced) TE28 - 0.711 mm W 19 mm Internally Enhanced (TE28 - 0.028” W 0.75” Internally Enhanced)

Evap/Cond Working Pressure

bar 10

psi 150

Evap/Cond Water Connection

Grooved Pipe Connections

Flanged Adaptor (IP Unit) Flanged Adaptor (SI Unit)

Agency Approvals (Chiller)

UL-CUL Listed/ASME

CE Approval/PED (European Code)

Motor Volt/Hz

380/400/415/3300/6600 Volts – 50 Hz

380/460/575/3300/4160 Volts – 60 Hz Starter* Unit Mounted Wye-Delta, Solid-State Inside the Delta Remote Mounted Wye-Delta, Solid-State Inside the Delta, *Across-the-line, *Primary Reactor, *Autotransformer

*Medium Voltage (3300, 4160, 6600) Starter Types - Full Voltage (X-Line), Primary Reactor, Autotransformer

Table GD-2 – Weight

Without Starter With Starter

Shell Size Operating Shipping Operating Shipping Model Compressor Evaporator Condenser lbs kgs lbs kgs lbs kgs lbs kgs CVGF 400 - 500 500 500 23288 10563 20570 9331 23856 10821 21142 9590 CVGF 500 700 700 28052 12725 24174 10965 28623 12984 24743 11223 CVGF 650 700 700 29508 13383 25635 11628 30105 13656 26058 11820 CVGF 800 1000 1000 40285 18273 34229 15526 40924 18563 34868 15816 CVGF 1000 1000 1000 41202 18689 35114 15941 41843 18980 35785 16232

**Note: Values represent estimate maximum unit weights including shells with TECU tubes, max bundles, 2-pass evaporator and condenser, 150 psig non-marine waterboxes, and compressors with the largest low-voltage motors for each family.

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General Data

50 and 60 Hz SI Units and (English Units)

Table GD-3 –Evaporator and Condenser Flow Rates (Minimum and Maximum, liters per second, gallons per minute)

High Efﬁ ciency Shells - 0.75 inch (19 mm) Internally Enhanced Cu Tube:

Condenser:

Nominal Shell 500 500 500 700 700 700 1000 1000 1000 1000

Bundle Size Small Medium Large Small Medium Large Small Medium Large Extra Large

Number of Passes 2 2 2 2 22222 2

Min Flow L/s (gpm) 31 (487) 34 (542) 37 (586) 42 (668) 47 (744) 52 (816) 59 (938) 67 (1056) 74 (1176) 77 (1213)

Max Flow L/s (gpm) 113 (1786) 125 (1987) 136 (2148) 155 (2450) 172 (2727) 189 (2993) 217 (3441) 244 (3874) 272 (4311) 280 (4447)

Evaporator:

Nominal Shell 500 500 500 700 700 700 1000 1000 1000 1000

Bundle Size Small Medium Large Small Medium Large Small Medium Large Extra Large

Number of Passes 2 2 2 2 22222 2

Min Flow L/s (gpm) 26 (407) 29 (458) 32 (511) 36 (566) 40 (628) 44 (698) 52 (822) 58 (921) 64 (1021) 72 (1136)

Max Flow L/s (gpm) 94 (1493) 106 (1680) 118 (1873) 131 (2077) 145 (2304) 161 (2559) 190 (3013) 213 (3377) 236 (3745) 263 (4165)

Evaporator:

Nominal Shell 500 500 500 700 700 700 1000 1000 1000 1000

Bundle Size Small Medium Large Small Medium Large Small Medium Large Extra Large

Number of Passes 3 3 3 3 33333 3

Min Flow L/s (gpm) 17 (271) 19 (305) 21 (340) 24 (378) 26 (419) 29 (465) 35 (548) 39 (614) 43 (681) 48 (757)

Max Flow L/s (gpm) 63 (995) 71 (1120) 79 (1248) 87 (1385) 97 (1536) 108 (1706) 127 (2009) 142 (2251) 158 (2497) 175 (2777)

Standard Efﬁ ciency Shells - 1.00 inch (25.4 mm) Int. Enhanced Cu Tube:

Condenser:

Nominal Shell 500 500 500 700 700 700 1000 1000 1000 1000

Bundle Size Small Medium Large Small Medium Large Small Medium Large Extra Large

Number of Passes 2 2 2 2 2 2222 2

Min Flow L/s (gpm) 31 (499) 35 (557) 38 (606) 43 (682) 48 (764) 53 (838) 58 (925) 64 (1020) 75 (1172) 83 (1307)

Max Flow L/s (gpm) 115 (1831) 129 (2041) 140 (2221) 158 (2501) 177 (2801) 194 (3071) 214 (3391) 236 (3741) 276 (4372) 302 (4792)

Evaporator:

Nominal Shell 500 500 500 700 700 700 1000 1000 1000 1000

Bundle Size Small Medium Large Small Medium Large Small Medium Large Extra Large

Number of Passes 2 2 2 2 2 2222 2

Min Flow L/s (gpm) 28 (447) 31 (496) 35 (550) 39 (625) 45 (706) 49 (784) 49 (781) 236 (3741) 63 (1003) 70 (1115)

Max Flow L/s (gpm) 103 (1638) 115 (1818) 127 (2018) 145 (2293) 181 (2874) 181 (2874) 181 (2864) 207 (3287) 232 (3678) 258 (4090)

Evaporator:

Nominal Shell 500 500 500 700 700 700 1000 1000 1000 1000

Bundle Size Small Medium Large Small Medium Large Small Medium Large Extra Large

Number of Passes 3 3 3 3 3 3333 3

Min Flow L/s (gpm) 19 (298) 21 (330) 23 (367) 26 (417) 30 (471) 33 (523) 33 ((521) 38 (598) 42 (669) 47 (744)

Max Flow L/s (gpm) 69 (1092) 76 (1212) 85 (1346) 96 (1529) 109 (1726) 121 (1916) 120 (1909) 138 (2191) 15 (2452) 172 (2726)

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Supply and Motor Lead Wiring and Connections

Only copper conductors should be connected to the compressor motor due to the possibility of

galvanic corrosion as a result of moisture if aluminum conductors are used. Copper conductors are

recommended for supply leads in the starter panel.

Suggested starter panel line- and load-side lug sizes (when lugs are provided) are noted in the

starter submittals. These submitted lug sizes should be carefully reviewed for compatibility with

conductor sizes speciﬁ ed by the electrical engineer or contractor. If they are not compatible, the

electrical engineer or contractor should specify the required lug sizes for the particular application.

Ground lugs are provided in the motor terminal box and starter panel. The motor terminals are

supplied with connection pads that will accommodate bus bars or standard terminal lugs (crimp

type recommended). Terminal lugs are ﬁ eld-supplied. These connection pads provide additional

surface area to minimize improper electrical connections. Also, a 3/8-inch bolt is provided on all

connection pads for mounting the lugs. Figure J-1 illustrates the connection between the motor

connection pads and the terminal lugs.

Jobsite Connections

Shipment and Assembly

All style hermetic centrifugal units ship as a factory assembled, factory tested package, ready to rig

into place on factory supplied isolation pads.

Figure J-1 — Electric Connections

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Controls

Standard Features

Field Connection

The ﬁ eld-connected elements are involved in physically turning the chiller on or off. This involves

ensuring that the chiller is not in an emergency or external stop condition, starting the pumps, and

verifying that ﬂ ow has been established. The optional, factory-supplied ﬂ ow switch or a customer-

supplied differential-pressure switch can be used to prove ﬂ ow.

Heat Exchanger Control

Fundamental internal variables that are necessary to control the chiller are gathered and acted

upon by the heat exchanger control function.

Motor Control and Compressor Protection

This includes all functions that start, run, and stop the motor. The starter module provides the

interface and control of Y-delta, across-the-line, primary reactor, autotransformer, and solid-state

starters. The motor control also provides protection to both the motor and the compressor.

Phase Voltage Sensors – 3 phase

Standard Features

Chilled-Water Reset

Includes factory-installed potential/current transformers in the starter for monitoring and displaying

phase voltage and provides over/undervoltage protection. Tracer AdaptiViewTM control, Tracer TU

and Tracer Summit display the following:

• Compressor phase amperage (a-b, b-c, c-a)

• Kilowatts

• Power factor (uncorrected)

• Compressor-phase voltage (a-b, b-c, c-a)

• Kilowatt-hours

Chilled-water reset reduces energy consumption during periods of the year when heating loads are

high and cooling loads are reduced. It is based on return chilled-water temperature. Resetting the

chilled-water temperature reduces the amount of work that the compressor must do by increasing

the evaporator refrigerant pressure. This increased evaporator pressure reduces the pressure

differential the compressor must generate while in the heat recovery mode. Chilled-water reset is

also used in combination with the hot-water control. By resetting the chilled-water temperature

upward, the compressor can generate a higher condenser pressure, resulting in higher leaving hot-

water temperatures.

CTV-PRC001-E4

Optional Features

Extended Operation Package

Select the extended-operation package for chillers that require external, hot water control, and/or

base-loading capabilities. This package also includes a 4-20 mA or 0-10 Vdc analog input for a

refrigerant monitor.

• External base-loading control

• External base-loading relay

• External hot-water control relay

• Refrigerant monitor input

Base-Loading Control

This feature allows an external controller to directly modulate the capacity of the chiller. It is typically

used in applications where virtually inﬁ nite sources of evaporator load and condenser capacity are

available and it is desirable to control the loading of the chiller. Two examples are industrial process

applications and cogeneration plants. Industrial process applications might use this feature to

impose a speciﬁ c load on the facility’s electrical system. Cogeneration plants might use this feature

to balance the system’s heating, cooling, and electrical generation.

All chiller safeties and Adaptive Control functions are in full effect when Base Loading is enabled.

If the chiller approaches full current, the evaporator temperature drops too low, or the condenser

pressure rises too high, the controller’s Adaptive Control logic limits the loading of the chiller to

prevent the chiller from shutting down on a safety limit. These limits may prevent the chiller from

reaching the load requested by the Base Loading signal.

Controls

Hot-Water Control

Refrigerant Monitor

An alternative and less radical approach to Base Loading indirectly controls chiller capacity.

Artiﬁ cially load the chiller by setting the chilled-water setpoint lower than it is capable of achieving.

Then, modify the chiller’s load by adjusting the current-limit setpoint. This approach provides

greater safety and control stability because it leaves the chilled-water temperature-control logic in

effect. The chilled-water temperature control responds more quickly to dramatic system changes

and limits chiller loading prior to reaching an Adaptive Control limit.

This feature allows an external controller to enable/disable and modulate the hot-water control

mode. Occasionally, centrifugal chillers are used to provide heating as a primary mission. In this

case the external controller or operator would select a hot-water temperature setpoint and the

chiller capacity would be modulated to maintain the setpoint. Heating is the primary mission and

cooling is a waste product or a secondary mission. This technique provides application ﬂ exibility,

especially in multiple-chiller plants in conjunction with undersized heating plants.

The chiller needs only one condenser for hot-water control, whereas Heat Recovery uses a

secondary condenser.

The Extended Operation package allows for a refrigerant monitor to send a 4-20 mA signal to

the Tracer AdaptiView

or 0-1,000 ppm concentration levels. The concentration level is displayed at Tracer AdaptiView

control, but the chiller will not take any action based on the input from the refrigerant monitor.

control display. It can be calibrated to correspond to either 0-100 ppm

CTV-PRC001-E4

Alternatively, a refrigerant monitor can be connected to Tracer Summit, which has the ability to

increase ventilation in the equipment room in response to high refrigerant concentrations.

Controls

Standard Protections

The chiller controller uses proportional-integral-derivative (PID) control for all limits—there is no

dead band. This removes oscillation above and below setpoints and extends the capabilities of the

chiller.

Some of the standard protection features of the chiller controller are described in this section. There

are additional protection features not listed here. Contact your local Trane ofﬁ ce for additional

protection information.

High Condenser-Pressure Protection

The chiller controller’s condenser limit keeps the condenser pressure under a speciﬁ ed maximum

pressure. The chiller will run up to 100 percent of this setpoint before the Adaptive Control mode

reduces capacity.

Starter-Contactor Failure Protection

The chiller will protect itself from a starter failure that prevents the compressor motor from

disconnecting from the line to the limits of its capabilities.

Standard Protections

The controller starts and stops the chiller through the starter. If the starter malfunctions and does

not disconnect the compressor motor from the line when requested, the controller will recognize

the fault and attempt to protect the chiller by operating the evaporator-and condenser-water

pumps and attempting to unload the compressor.

Loss of Water-Flow Protection

Tracer AdaptiViewTM control has an input that will accept a contact closure from a proof-of-ﬂ ow

device such as a ﬂ ow switch or pressure switch. Customer wiring diagrams also suggest that the

ﬂ ow switch be wired in series with the cooling-water (condenser-water) pump starter’s auxiliary

contacts. When this input does not prove ﬂ ow within a ﬁ xed time during the transition from Stop to

Auto modes of the chiller, or if the ﬂ ow is lost while the chiller is in the Auto mode of operation, the

chiller will be inhibited from running by a nonlatching diagnostic.

Evaporator Limit Protection

Evaporator Limit is a control algorithm that prevents the chiller tripping on its low refrigerant-

temperature cutout. The machine may run up to the limit but not trip. Under these conditions the

intended chilled-water setpoint may not be met, but the chiller will do as much as it can. The chiller

will deliver as much cold water as possible even under adverse conditions.

Low Evaporator-Water Temperature

Low evaporator-water temperature protection, also known as Freeze Stat protection, avoids water

freezing in the evaporator by immediately shutting down the chiller and attempting to operate the

chilled-water pump. This protection is somewhat redundant with the Evaporator Limit protection,

and prevents freezing in the event of extreme errors in the evaporator-refrigerant temperature

sensor.

The cut out setting should be based on the percentage of antifreeze used in the customer's water

loop. The chiller’s operation and maintenance documentation provides the necessary information

for percent antifreeze and suggests leaving-water temperature-cutout settings for a given chilled-

water temperature setpoint.

CTV-PRC001-E4

Standard Protections

Oil-Temperature Protection

Low oil temperature when the oil pump and/or compressor are running may be an indication of

refrigerant diluting the oil. If the oil temperature is at or below the low oil-temperature setpoint,

the compressor is shut down on a latching diagnostic and cannot be started. The diagnostic

is reported at the user interface. The oil heaters are energized in an attempt to raise the oil

temperature above the low oil-temperature setpoint.

High oil-temperature protection is used to avoid overheating the oil and the bearings.

Low Differential Oil-Pressure Protection

Oil pressure is indicative of oil ﬂ ow and active oil-pump operation. A signiﬁ cant drop in oil pressure

indicates a failure of the oil pump, oil leakage, or a blockage in the oil-circuit.

During Compressor prelube the differential pressure should not fall below 12 psid. Shutdown

diagnostic will occure within 2 seconds of the differential pressure falling below two-thirds of the

low differential oil-pressure cutout.

Phase-Unbalance Protection

Controls

Phase-unbalance protection is based on an average of the three phase-current inputs. The ultimate

phase-unbalance trip point is 30 percent. In addition, the RLA of the motor is derated by resetting

the active current-limit setpoint based on the current unbalance. The RLA derate protection can be

disabled in the ﬁ eld-startup menu.

The following derates apply when the phase-unbalance limit is enabled:

10% unbalance = 100% RLA derate 15% unbalance = 90% RLA derate

20% unbalance = 85% RLA derate 25% unbalance = 80% RLA derate

30% unbalance = Shutdown

Phase-Loss Protection

The controller will shut down the chiller if any of the three phase currents feeding the motor drop

below 10 percent RLA. The shutdown will result in a latching phase-loss diagnostic. The time to

trip is 1-3 seconds.

Phase Reversal/Rotation Protection

The controller detects reverse phase rotation and provides a latching diagnostic when it is

detected. The time to trip is 0.7 seconds.

Momentary Power Loss and Distribution Fault Protection

Three-phase momentary power loss (MPL) detection gives the chiller improved performance

through many different power anomalies. MPLs of 2.5 cycles or longer will be detected and cause

the unit to shut down. The unit will be disconnected from the line within 6 line cycles of detection.

If enabled, MPL protection will be active any time the compressor is running. MPL is not active on

reduced-voltage starters during startup to avoid nuisance trips. The MPL diagnostic is an automatic

reset diagnostic.

CTV-PRC001-E4

An MPL has occurred when the motor no longer consumes power. An MPL may be caused by any

drop or sag in the voltage that results in a change in the direction of power ﬂ ow. Different operating

conditions, motor loads, motor size, inlet guide vane (IGV) position, etc. may result in different

Controls

levels at which this may occur. It is difﬁ cult to deﬁ ne an exact voltage sag or voltage level at which a

particular motor will no longer consume power, but we are able to make some general statements

concerning MPL protection:

The chiller will remain running under the following conditions:

• Line-voltage sag of 1.5 line cycles or less for any voltage magnitude sag

• Control-voltage sags of less than 3 line cycles for any magnitude sag

• Control-voltage sags of 40 percent or less for any amount of time

• Second-order or lower harmonic content on the line

The chiller may shut down under the following conditions:

• Line-voltage sags of 1.5 or more line cycles for voltage dips of 30 percentor more

• Control-voltage sags of 3 or more line cycles for voltage dips of 40 percentor more

• Third-order or higher harmonic content on the line

Current Overload Protection

The control panel will monitor the current drawn by each line of the motor and shut the chiller

off when the highest of the three line currents exceeds the trip curve. A manual reset diagnostic

describing the failure will be displayed. The current overload protection does not prohibit the chiller

from reaching its full-load amperage.

Standard Protections

The chiller protects itself from damage due to current overload during starting and running modes,

but is allowed to reach full-load amps.

High Motor-Winding Temperature Protection

This function monitors the motor temperature and terminates chiller operation when the

temperature is excessive. The controller monitors each of the three winding-temperature sensors

any time the controller is powered up, and displays each of the temperatures at the service menu.

Immediately prior to start, and while running, the controller will generate a latching diagnostic if the

winding temperature exceeds 265° F(129.4℃) for 0.5 to 2 seconds.

Surge Detection Protection

Surge detection is based on current ﬂ uctuations in one of three phases. The default detection

criterion is two occurrences of root-man square (RMS) current change of 30 percent within 0.8

seconds in 60 + 10 percent seconds. With the Tracer chiller controller, the detection criterion is

adjustable with the Tracer chiller controller.

Overvoltage and Undervoltage Protection

While some components of the chiller are impervious to dramatically different voltages, the

compressor-motor is not. The control panel monitors all three line-to-line voltages for the chiller,

and bases the over and undervoltage diagnostics on the average for the three voltages. The default

protection resets the unit if the line voltage is below or above ±10 percent of the nominal for 60

seconds.

Power Factor and kW Measurement

Three-phase measurement of kW and unadjusted power factor yields higher accuracy during

power imbalance conditions.

CTV-PRC001-E4

Standard Protections

Short-Cycling Protection

This function mimics heat dissipation from a motor start using two setpoints:

Restart Inhibit Free Starts and Restart Inhibit Start-to-Start Timer. This allows the CVGF to

inhibit too many starts in a deﬁ ned amount of time while still allowing for fast restarts. The

default for CVGF is 3 Free Starts and a 20 minute Start-to-Start Timer. The control panel

generates a warning when the chiller is inhibited from starting by this protection.

Restart Inhibit Free Starts

This setting will allow a maximum number of rapid restarts equal to its valve. If the number of

free starts is set to 1, this will allow only one start within the time period set by the Start-to-Start

Time setting. The next Start will be allowed only after the Start-to-Start timer has expired. If the

number of free starts is programmed to 3, the control will allow three starts in rapid succession,

but thereafter, it would hold off on a compressor start until the Start-to-Start timer expired.

Restart Inhibit Start-to-Start Time setting

This setting deﬁ nes the shortest chiller cycle period possible after the free starts have been

used. If the number of free Starts is programmed to 1, and the Start-to-Start Time setting is

programmed to 10 minutes. the compressor will be allowed one start every 10 minutes The

Start-to-Start time is the time from when the motor was directed to energize to when the next

prestart is issued.

Controls

CTV-PRC001-E4

Physical Dimensions

50 and 60 Hz SI (English Units)

Figure PD-1 –Model CVGF Cooling Only

With Unit-Mounted Starter

Figure PD-2 –Model CVGF Cooling Only Without Unit-Mounted

Starter (for Remote-Mounted Starter)

Dimensions – SI Units (English Units)

Clearance Unit Dimensions Unit Dimensions

Tube Pull With Unit Mounted Starters Without Unit Mounted Starters

Comp Shell Size CL1 CL2 Length Height Width Width

400-500 500 4235 mm 1118 mm 4083 mm 2094 mm 1984 mm 1929 mm

(13' 10 3/4") (3' 8") (13' 4 3/4") (6' 101/2") (6' 6 1/8") (6' 3 15/16")

500 700 4235 mm 1850 mm 4083 mm 2200 mm 2038 mm 1988 mm

13' 10 3/4") (3' 11") (13' 4 3/4") (7' 2 5/8") (6' 8 1/4") (6' 6 1/4")

650 700 4235 mm 1850 mm 4083 mm 2270 mm 2083 mm 2076 mm

13' 10 3/4") (3' 11") (13' 4 3/4") (7' 5 3/8") (6' 10") (6' 9 3/4")

800-1000 1000 4235 mm 1219 mm 4083 mm 2521 mm 2305 mm 2257 mm

13' 10 3/4") (4') (13' 4 3/4") (8' 3 1/4") (7' 6 3/4") (7' 4 7/8")

CL1 at either end of machine and is required for tube pull clearance.

CL2 is always at the opposite end of machine from CL1 and is for water box plus clearance.

– Recommended clearance (D1) for machine with unit mounted starter is 914 mm (36”)

– Recommended clearance (D2) for machine without unit mounted starter is 1219 mm (38”)

Unit length is not included for the waterbox.

See page 23 for waterbox dimension

CTV-PRC001-E4

Model CVGF Water Connection Pipe Size

Water Passes Metric Pipe Size (mm) DN

Evaporator

2 Pass DN 200 (8”) DN 250 (10”) DN 300 (12”)

3 Pass DN 200 (8”) DN 200 (8”) DN 250 (10”)

Condenser

Condenser DN 250 (10”) DN 300 (12”) DN 350 (14”)

Evaporator Water Box Length — SI (I-P)

Shell Pressure Evap. Passes Supply Return

500

700

1000

10 bar (150 psig) NMAR 2 402 (15.82) 226 (8.89)

10 bar (150 psig) NMAR 3 402 (15.82) 402 (15.82)

10 bar (150 psig) NMAR 2 489 (19.25) 235 (9.25)

10 bar (150 psig) NMAR 3 438 (17.24) 438 (17.24)

10 bar (150 psig) NMAR 2 581 (22.87) 276 (10.87)

10 bar (150 psig) NMAR 3 530 (20.87) 530 (20.87)

Physical Dimensions

Shell Size

500 700 1000

Length

No. mm (in)

Condenser Water Box Length — SI (I-P)

Shell Pressure Evap. Passes Supply Return

500 10 bar (150 psig) NMAR 2 486 (19.02) 204 (8.03)

700 10 bar (150 psig) NMAR 2 582 (22.87) 231 (9.09)

1000 10 bar (150 psig) NMAR 2 658 (25.75) 276 (10.87)

Length

No. mm (in)

CTV-PRC001-E4

Mechanical Speciﬁ cations

Trane CVGF packaged centrifugal water chillers using HFC-134a refrigerant consist of a hermetic

two-stage, gear-drive centrifugal compressor, evaporator, condenser, interstage economizer, unit-

mounted microprocessor based control panel, and compressor motor starter. The chiller is entire

factory assembled.

Compressor

Two-stage centrifugal compressor with high-strength aluminum alloy, fully shrouded impellers.

The impellers are tested at 25 percent over-design operating speed. The rotating assembly is

dynamically balanced for vibration of less than 5.1 mm/s (0.2 ips peak velocities) at nominal

operating speeds. The control system affords and admitted 100 - 20 percent capacity modulation

by electrically actuated guide vanes upstream of each impeller.

Drive Train

The drive train consists of helical bull and pinion gears. Gear tooth surfaces are case hardened

and precision ground. The one-piece impeller shaft is supported by hydrodynamic thrust and radial

bearings.

Motor

Lubrication System

Economizer/Oriﬁ ce

Evaporator

The motor is a hermetic, liquid-refrigerant cooled, two-pole, low-slip, squirrel-cage induction

motor. A radial hydrodynamic bearing and duplex angular contact ball bearings support the rotor

assembly. Winding-embedded sensors provide positive thermal protection.

The lubrication system consists of an internal oil sump with heaters, positive displacement oil

pump, brazed plate condenser-cooled oil cooler, and oil distillation/return line.

The economizer consists of a carbon steel shell with internal components designed to prevent

liquid carryover to the compressor. Liquid refrigerant is admitted through a single calibrated oriﬁ ce

(no moving parts) which maintains a pressure differential between condenser and economizer.

The evaporator is designed, tested and stamped in accordance with ASME Boiler and Pressure

Vessel Code or PED (European Code) for refrigerant side working pressure of 15.2 bars (220psig).

It consists of a carbon steel shell with steel tube sheets welded to eachend. Intermediate tube

support sheets positioned along the shell axis prevent relative tube motion. Individually-replaceable

externally-finned and internally-grooved 19 mm (¾ in.) and 25.4 mm (1.0 in.) nominal diameter

seamless copper tubes are mechanically expanded into tube sheets.

Two- or three- pass water boxes rated at 10.5 bar (150 psi) is standard. Grooved pipe connections

are standard; ﬂ anged connections are optionally available. The waterside is hydrostatically tested at

ASME 1.5 times, PED 1.43 times, GB 1.25 times maximum working pressure.

Liquid refrigerant is admitted to the evaporator through a single calibrated oriﬁ ce (no moving parts)

which maintains a pressure differential between the economizer and the evaporator.

CTV-PRC001-E4

Condenser

Unit Control Panel

Mechanical Speciﬁ cations

The condenser is designed, tested and stamped in accordance with the ASME Boiler and Pressure

Vessel Code or PED (European Code) for a refrigerant side working pressure of 15.2 bars (220

psig). It consists of a carbon steel shell with steel tube sheets welded to each end. Individually-

replaceable, externally-ﬁ nned and internally-grooved 19 mm(¾ in.) and 25.4 mm (1.0 in.) nominal

diameter seamless copper tubes are mechanically expanded into the tubesheets.

Two-pass water boxes are bolted to the tube sheets. Grooved pipe connections are standard.

ﬂ anged connections are optionally available. Maximum waterside working pressureof 10.5 bars (150

psi) is standard. The waterside is hydrostatically tested at ASME 1.5 times, PED 1.43 times, GB 1.25

times maximum working pressure.

The microcomputer control panel is factory installed and tested on the CVGF unit. All controls

necessary for the safe and reliable operation of the chiller are provided including oil management,

interface to the starter, and three phase motor overload protection. It also includes comprehensive

status and diagnostic monitoring controls. A control power transformer included in the starter panel

powers the control system.

The microprocessor controller is compatible with reduced voltage or full voltage electro-mechanical

starters, and solid state starter. Starter for Europe with the CE mark is available.

The microcomputer control system processes the leaving evaporator fluid temperature sensor

signal to satisfy the system requirements across the entire load range.

The controller will load and unload the chiller via control of the stepper- motor/actuator which drives

the inlet guide vanes open and closed. The load range can be limited either by a control limitor or

by an inlet guide vane limit (whichever controls the lower limit). It will also control the evaporator

and condenser pumps to insure proper chiller operation.

Status and 10 active diagnostics are communicated to the operator via display with a tabbed

navigation system. Setpoints are entered through the touch-sensitive screen. Countdown timer

displays remaining time(s) during wait states and time out periods. Non-volatile memory saves

unit set-up information during power loss without the need for batteries. Password protection is

provided to secure the operator interface. PC-based service tool software displays the last 60

active or 60 historic diagnostics, indicating the time, date of occurrence, and system parameters at

the time of the diagnostic.

The service tool provides advanced troubleshooting and access to sophisticated configuration

settings not needed during operation of the chiller. Any PC that meets the installation requirements

may be loaded with the service tool software via download from www.trane.com.

CTV-PRC001-E4

Unit mounted display is capable of displaying chiller parameters in IP or SI units, and language in

English and any 2 downloadable and/or locally translated languages.

Mechanical Speciﬁ cations

Compressor-Motor Starter

Unit-mounted starters can either be a star-delta or solid-state in NEMA 1 type enclosure rated up

to 952 RLA at 380-480 Volts (star-delta), 900 RLA at 481-600 Volts (star-delta), and 1472 RLA at

380-600 Volts (solid-state).

Remote-mounted starters can either be star-delta or solid-state for low voltage. Across-the-line,

primary reactor, or autotransformer for medium and high voltage. All in NEMA 1 type enclosures up

to 1402 RLA at 380-600 volts (star-delta), 1472 RLA at 380-600 Volts (solid-state), and 360 RLA at

3300-6600 Volts (x-line, primary reactor, and autotransformer).

Unit-mounted or remote-mounted starters for Europe (CE mark) will be star-delta, solid-state,

across-the-line, primary reactor, and autotransformer only in a IP 10 enclosure.

A steel panel door with optional mechanical interlock disconnects the system when the door

is opened (required for CE listing). The panel also contains three-phase current transformer for

overload protection, and an oil pump starter with overloads. The starter is factory mounted and

wired to the compressor motor and the control panel. The CVGF chiller/starter assembly is factory

tested.

Optional remote-mounted electromechanical starters are available.

Isolation Pads

Molded neoprene isolation pads are supplied with each chiller for placement under all support

points. Spring isolators are optionally available.

Refrigerant and Oil Charge

A full charge of oil is supplied with each unit. The oil ships in the unit’s sump and the refrigerant

ships directly to the job site from refrigerant suppliers.

Painting

All painted CVGF surfaces are coated with two coats of air-dry, beige primer-finisher prior to

shipment.

Insulation

The chiller can be ordered with or without factory-applied insulation. Factory-supplied insulation is

applied to all low temperature surfaces including the evaporator, water boxes and suction elbow.

Insulation material is 19mm (¾ in.) Armaﬂ ex II or equal (thermal conductivity = 0.04 W/m·℃; 0.3

Btu·in/h·ft²·°F). The oil sump is covered with 9.5 mm (3/8 in.) and 13 mm (½ in.) insulation.

Rigging

Evaporator and condenser tube sheets provide rigging support points. A rigging diagram is afﬁ xed

to the chiller.

Quality

The chiller manufacturing facility is ISO 9001 certiﬁ ed.

CTV-PRC001-E4

Conversion Table

To Convert From: To : Multiply By: Length Feet (ft) meters(mm) 0.30481 Inches (In) millimeters (mm) 25.4

Area

Square Feet (ft Square Inches (In

Volume

Cubic Feet (ft Cubic Inches (In Gallons (gal) Iitres (L) 3.875 Gallons (gal) cubic meters (m

Flow

Cubic feet/min (cfm) cubic meters/second (m Cubic Feet/min (cfm) cubic metrs/hr (m Gallons/minute (gpm) cubic meters/hr (m

) square meters (m2) 0.093

) square millimeters (mm2) 645.2

) Cubic meters (m3) 0.0283

) Cubic mm (mm3) 16387

) 0.003785

/s) 0.000472

/hour) 1.69884

/hour) 0.2271

Gallons/minute (gpm) Iitres/second (l/s) 0.06308

Velocity

Feet per minute (ft/m) meters per second (m/s) 0.00508

To Convert From: To : Multiply By:

Energy and Power and Capacity

British Thermal Units (Btu/h) Kilowatt (kW) 0.000293 British Thermal Units (Btu) KCalorie (Kcal) 0.252 Tons (refrig. effect) Kilowatt (refrig. effect) 3.516 Tons (refrig. effect) Kilocalories per hour (Kcal/hr) 3024 Horsepower Kilowatt (kW) 0.7457

Pressure

Feet of water (ftH Inches of water (inH Pounds per square inch (psi) Pascals (pa) 6895 PSI Bar or kg/cm

0) Pascals (pa) 2990

0) Pascals (pa) 249

6.895 x 10

Weight

Ounches (oz) Kilograms (kg) 0.02835 Pounds (Ibs) Kilograms (kg) 0.4536

Fouling factors for heat exchangers

0.00075 ft

0.00025 ft

2 o

F hr/Btu =0.132 m

2 o

F hr/Btu =0.044 m

2 o

K/kW K/kW

Feet per second (ft/s) meters per second (m/s) 0.3048

Temperature-Centigrade (oC) versus Fahrenheit (oF)

Note: The center columns of numbers, referred tp as BASE TEMP., is the temperature in either degrees Fahrenheit (

F) or Centigrade (oC), whichever is desired to

convert into the other. If degrees Centrigrade is given, read degrees Fahrenheit to the right. If degrees Fahrenheit is given, read degrees Centigrade to the left.

℃

-40.0

-39.4

-38.9

-38.3

-37.8

-37.2

-36.7

-36.1

-35.6

-35.0

-34.4

-33.9

-33.3

-32.8

-32.2

-31.7

-31.1

-30.6

-30.0

-29.4

-28.9

-28.3

-27.8

-27.2

-26.7

-26.1

-25.6

-25.0

-24.4

-23.9

-23.3

-22.8

-22.2

-21.7

-21.1

-20.6

-20.0

-19.4

-18.9

-18.3

-17.8

-17.2

-16.7

-16.1

-15.6

Temperature

C or F°F

-40

-39

-38

-37

-36

-35

-34

-33

-32

-31

-30

-29

-28

-27

-26

-25

-24

-23

-22

-21

-20

-19

-18

-17

-16

-15

-14

-13

-12

-11

-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0 +1 +2 +3 +4

-40

-38.2

-36.4

-34.6

-32.8

-31.0

-29.2

-27.4

-25.6

-23.8

-22.0

-20.2

-18.4

-16.6

-14.8

-13.0

-11.2

-9.4

-7.6

-5.8

-4.0

-2.2

-0.4 +1.4 +3.2

+5.0 +6.8 +8.6

+10.4+

+12.2

+14.0 +15.8 +17.6 +19.4 +21.2

+23.0 +24.8 +26.6 +28.4 +30.2

+32.0 +33.8 +35.6 +37.4 +39.2

℃

-15.0

-14.4

-13.9

-13.3

-12.8

-12.2

-11.7

-11.1

-10.6

-10.0

-9.4

-8.9

-8.3

-7.8

-7.2

-6.7

-6.1

-5.5

-5.0

-4.4

-3.9

-3.3

-2.8

-2.2

-1.7

-1.1

-0.6

0.0 +0.6 +1.1

+1.7 +2.2 +2.8

+3.3+

3.9

+4.4 +5.0 +5.5 +6.1 +6.7

+7.2 +7.8 +8.3 +8.9 +9.4

Temperature

C or F°F

+5 +6 +7 +8 +9

+10 +11 +12 +13 +14

+15 +16 +17 +18 +19

+20 +21 +22 +23 +24

+25 +26 +27 +28 +29

+30 +31 +32 +33 +34

+35 +36 +37 +38 +39

+40 +41 +42 +43 +44

+45 +46 +47 +48 +49

+41.0 +42.8 +44.6 +46.4 +48.2

+50.0 +51.8 +53.6 +55.4 +57.2

+59.0 +60.8 +62.6 +64.4 +66.2

+68.0 +69.8 +71.6 +73.4 +75.2

+77.0 +78.8 +80.6 +82.4 +84.2

+86.0 +87.8 +89.6 +91.4 +93.2

+95.0 +96.8

+98.6 +100.4 +102.2

+104.0 +105.8 +107.6 +109.4 +111.2

+113.0 +114.8 +116.6 +118.4 +120.2

℃

+10.0 +10.6 +11.1 +11.7 +12.2

+12.8 +13.3 +13.9 +14.4 +15.0

+15.6 +16.1 +16.7 +17.2 +17.8

+18.3 +18.9 +19.4 +20.0 +20.6

+21.1 +21.7 +22.2 +22.8 +23.2

+23.9 +24.4 +25.0 +25.6 +26.1

+26.7 +27.2 +27.8 +28.3 +28.9

+29.4 +30.0 +30.6 +31.1 +31.7

+32.2 +32.8 +33.3 +33.9 +34.4

Temperature

C or F°F

+50 +51 +52 +53 +54

+55 +56 +57 +58 +59

+60 +61 +62 +63 +64

+65 +66 +67 +68 +69

+70 +71 +72 +73 +74

+75 +76 +77 +78 +79

+80 +81 +82 +83 +84

+85 +86 +87 +88 +89

+90 +91 +92 +93 +94

+122.0 +123.8 +125.6 +127.4 +129.2

+131.0 +132.8 +134.6 +136.4 +138.2

+140.0 +141.8 +143.6 +145.4 +147.2

+149.0 +150.8 +152.6 +154.4 +156.2

+158.0 +159.8 +161.6 +163.4 +165.2

+167.0 +168.8 +170.6 +172.4 +174.2

+176.0 +177.8 +179.6 +181.4 +183.2

+185.0 +186.8 +188.6 +199.4 +192.2

+194.0 +195.8 +197.6 +199.4 +201.2

257.0Temperature

℃

C or F°F

+35.0 +35.6 +36.1 +36.7 +37.2

+100

+37.8

+101

+38.3

+102

+38.9

+103

+39.4

+104

+40.0

+105

+40.6

+106

+41.1

+107

+41.7

+108

+42.2

+109

+42.8

+110

+43.3

+111

+43.9

+112

+44.4

+113

+45.0

+114

+45.6

+115

+46.1

+116

+46.1

+117

+47.2

+118

+47.8

+119

+48.3

+120

+48.9

+121

+49.4

+122

+50.0

+123

+50.6

+124

+51.1

+125

+51.7

+126

+52.2

+127

+52.8

+128

+53.3

+129

+53.9

+130

+54.4

+131

+55.0

+132

+55.6

+133

+56.1

+134

+56.7

+135

+57.2

+136

+57.8

+137

+58.3

+138

+58.9

+139

+59.4

+95 +96 +97 +98 +99

+203.0 +204.8 +206.6 +208.4 +210.2

+212.0 +213.8 +215.6 +217.4 +219.2

+221.0 +222.8 +224.6 +226.4 +228.2

+230.0 +231.8 +233.6 +235.4 +237.2

+239.0 +240.8 +242.6 +244.4 +246.2

+248.0 +249.8 +251.6 +253.4 +255.2

+257.0 +258.8 +260.5 +262.4 +264.2

+266.0 +257.8 +269.6 +271.4 +273.2

+275.0 +276.8 +278.6 +280.4 +282.2

℃

+60.0 +60.6 +61.1 +61.7 +62.2

+62.8 +63.3 +63.9 +64.4 +65.0

+65.6 +66.1 +66.7 +67.2 +67.8

+68.3 +68.9 +69.4 +70.0 +70.6

+71.1 +71.7 +72.2 +72.8 +73.3

+73.9 +74.4 +75.0 +75.6 +76.1

+76.7 +77.2 +77.8 +78.3 +78.9

+79.4 +80.0 +80.6 +81.1 +81.7

+82.2 +82.8 +83.3 +83.9 +84.4

Temperature

C or F°F

+140 +141 +142 +143 +144

+145 +146 +147 +148 +149

+150 +151 +152 +153 +154

+155 +156 +157 +158 +159

+160 +161 +162 +163 +164

+165 +166 +167 +168 +169

+170 +171 +172 +173 +174

+175 +176 +177 +178 +179

+180 +181 +182 +183 +184

+284.0 +285.8 +287.6 +289.4 +291.2

+293.0 +294.8 +296.6 +298.4 +300.2

+302.0 +303.8 +305.6 +307.4 +309.2

+311.0 +312.8 +314.6 +316.4 +318.2

+320.0 +321.8 +323.6 +325.4 +327.2

+329.0 +330.8 +332.6 +334.4 +336.2

+338.0 +339.8 +341.6 +343.4 +345.2

+347.0 +348.8 +350.6 +352.4 +354.2

+356.0 +357.8 +359.8 +361.4 +363.2

FOR INTERPOLATION IN THE ABOVE TABLE USE:

BASE TEMPERATURE(℃or°F) 1 2 3 4 5 6 7 8 9 DEGREES CENTIGRADE: 0.56 1.11 1.67 2.22 2.78 3.33 3.89 4.44 5.00 5.56 DEGREES FAHRENHEIT: 1.8 3.6 5.4 7.2 9.0 10.8 12.6 14.4 16.2 18.0

-2

CTV-PRC001-E4

www.trane.com

For more information, contact your local Trane ofﬁ ce or e-mail us at comfort@trane.com

Literature Order Number

Date

Supersedes

Trane has a policy of continuous product and data improvement and reserves the right to change design speciﬁ cations without notice.

CTV-PRC001-E4

October 2008

September 2004

Trane Centrifugal Water Chillers CVGF User Manual 2

Specifications and Main Features

Frequently Asked Questions

User Manual