Carrier 30Xw325 400 Users Manual 30xw 2pd

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Copyright 2009 Carrier Corporation Form 30XW-2PD

Carrier's AquaForce 30XW chillers

provide a great combination of perfor-

mance and compact footprint for

cooling and heat recovery applica-

tions. These chillers provide excellent

reliability and efficiency at true operat-

ing conditions without compromising

the environment.

• Chlorine-free R-134a HFC

refrigerant

• Positive displacement, twin screw

compressors

• AHRI (Air Conditioning, Heating,

and Refrigeration Institute) certified

efficiencies to 0.468 kW per ton

IPLV (integrated part load value)

• Dual independent refrigerant

circuits

• Compact footprint, less than 48 in.

(1219 mm) wide

• Easy to use controls

Features/Benefits

Quality design and

construction make the

AquaForce 30XW chillers an

excellent choice for modern,

efficient chilled water plants.

Small footprint

The 30XW chillers feature a compact

footprint and are delivered as a single

complete package less than 48 in.

(1219 mm) wide for easy installation

and minimal indoor space. The 30XW

chiller footprints may be up to 30%

smaller when compared to other chill-

ers and may require less mechanical

room floor space and smaller concrete

pads.

AQUAFORCE®

30XW325-400

Water-Cooled Liquid Screw

Chillers

325 to 400 Nominal Tons

(1133 to 1354 kW)

Product

Data

®

a30-4659.eps

2

Easy installation

The AquaForce® 30XW screw chillers

are shipped with starter and unit

mounted flow switch installed and can

be shipped with a full R-134a refriger-

ant charge to minimize installation

time. The unit provides single point

power connection (using optional con-

trol power transformer) and quick, easy

piping connections (using Victaulic-

type clamp on couplings). The 30XW

200-v, 230-v, 460-v, and 575-v units

are designed in accordance with UL

(Underwriters Laboratory) and UL

Canada (Underwriters Laboratory,

Canada) standards to minimize electri-

cal inspection time.

Dual circuits

Dual independent refrigerant circuits

provide reliable, dependable cooling,

excellent part load operation, and

redundancy. Each circuit includes its

own compressor, electronic expansion

valve, filter drier, and sight glass to

assure operation.

High efficiency

The Aquaforce 30XW screw chiller

efficiency levels meet or exceed energy

efficiency requirements of ASHRAE

(American Society of Heating, Ventila-

tion and Air Conditioning Engineers)

90.1 2007 and CSA (Canadian Stan-

dards Association) for both full load and

part load operation and is certified to

AHRI standards.

Per AHRI 550/590, chillers operate at

design conditions less than one percent

of the time. As a result, superior part

load efficiency is required for today's

chilled water applications. The 30XW

chillers deliver integrated part-load

values (IPLV) as low as 0.468 kW per

ton at AHRI conditions while offering

the ability to operate in a broad range

of applications and climates. This

exceptional performance has a signifi-

cant impact on energy savings and cost

of ownership.

Heat recovery

The Aquaforce 30XW screw chiller

provides up to 140 F (60 C) leaving

condenser water (requires 300 psig

[2068 kPa] condenser option) when

applied in heat recovery applications.

Further, the 30XW unit heat control

mode can be utilized to maintain a con-

stant leaving condenser water tempera-

ture. Low source controls provide

evaporator suction protection to pre-

vent nuisance trips when operating in

heat recovery applications. This flexi-

ble capability allows a chiller to meet

both cooling and heating requirements

providing a high level of interchange-

ability within a chilled water plant.

Environmental leadership

Carrier has long been committed to the

environment and its sustainability. The

Aquaforce 30XW screw chiller pro-

vides customers with a high-efficiency,

chlorine free, long-term solution unaf-

fected by refrigerant phase outs.

Carrier's decision to utilize non-ozone

depleting R-134a refrigerant provides

customers with a safe and environmen-

tally sound choice without compromis-

ing efficiency. In addition, R-134a

refrigerant was given an A1 safety rat-

ing by ASHRAE, meaning that it is

among the safest refrigerants available.

Positive displacement screw

compression

Positive displacement compression

ensures stable operation under all load

conditions without the possibility of

compressor surge. High-efficiency

rotary twin screw compressors with

infinitely variable slide valves allow the

chillers to exactly match actual load

conditions, delivering excellent part

load performance.

Factory testing

A quick start-up is assured once instal-

lation is complete, since each 30XW

unit is manufactured at an ISO (Interna-

tional Organization for Standardiza-

tion) 9001:2000 listed manufacturing

facility to ensure quality. In addition, all

30XW units that are shipped with a full

charge of R-134a refrigerant are tested

under load at the factory to provide

reliable start-up.

Low starting current (inrush)

Dual circuit units stage the start up of

the compressors thereby reducing the

over all current draw by up to 40%.

Constant or variable evapora-

tor flow

Aquaforce 30XW screw chillers are

suitable for constant or variable evapo-

rator flow.

Hermetic motor

The Aquaforce 30XW chiller utilizes

motors that are hermetically sealed

from the machine room. Refrigerant is

used to cool the motor windings.

Carrier's hermetic design eliminates:

• Compressor shaft seals that require

maintenance and increase the likeli-

hood of refrigerant leaks.

• Machine room cooling requirements

associated with air-cooled motors,

which dissipate heat to the mechan-

ical room.

• High noise levels common with air-

cooled motors, which radiate noise

to the machine room and adjacent

areas.

• Shaft alignment problems that occur

with open-drive designs during start-

up and operation, when equipment

temperature variations cause ther-

mal expansion.

Positive pressure design

Positive pressure designs eliminate the

need for costly low pressure contain-

ment devices, reducing the initial cost

Features/Benefits (cont)

Table of contents Page

Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,8

Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-14

Selection Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-18

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19,20

Typical Control Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-24

Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-28

Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-32

3

of the system. The AquaForce® 30XW

chiller's positive pressure design

ensures that air, moisture and other

performance degrading contaminants

are not sucked inside the chiller. Purge

units and their associated maintenance

are no longer necessary.

Refrigerant isolation valves

The refrigerant isolation valves enable

service personnel to store the refriger-

ant charge in the evaporator or con-

denser during servicing. These valves

also allow the refrigerant to be stored

inside the chiller during shipment from

the factory minimizing start-up time.

During servicing, the in-chiller storage

reduces refrigerant loss and eliminates

time-consuming transfer procedures.

As a self-contained unit, the AquaForce

30XW chiller does not require addi-

tional remote storage systems.

Optional suction service valves

The optional suction service valves

allow for further isolation of the com-

pressor from the evaporator vessel.

Marine container shipment

The compact design allows for con-

tainer shipment to export destinations,

ensuring quality while reducing ship-

ping cost.

Heat exchangers

The Aquaforce 30XW chillers utilize

mechanically cleanable shell and tube

evaporators and condensers available

with a complete line of waterbox

options to meet project specific

requirements. One, two, and three

pass arrangements are available to

meet a wide variety of flow conditions.

Nozzle in head and marine waterboxes

are available to meet 150 psig

(1034 kPa) and 300 psig (2068 kPa)

piping requirements.

Heat exchanger features include:

ASME certified construction

An independent agency certifies the

design, manufacture, and testing of all

heat exchangers to American Society

of Mechanical Engineers (ASME) stan-

dards, ensuring heat exchanger safety,

reliability and long life. The ASME

U-stamp is applied to the refrigerant

side of the evaporator and condenser

and is applied to the water side of these

heat exchangers when 300 psig

(2068 kPa) marine waterboxes are

provided.

Electronic thermal-dispersion flow

switch

An electronic thermal-dispersion flow

switch switch is included with the evap-

orator. The switch is factory installed

and tested and contains no moving

parts for high reliability.

High performance tubing

Carrier's AquaForce chillers utilize

advances in heat transfer technology

providing compact, high-efficiency

heat exchangers. Tubing with

advanced internally and externally

enhanced geometry improves chiller

performance by reducing overall resis-

tance to heat transfer while reducing

fouling.

Evaporator tube expansion

Evaporator tube expansion at center

support sheets prevents unwanted tube

movement and vibration, thereby

reducing the possibility of premature

tube failure. Tube wall thickness is

greater at the expansion location, sup-

port sheets, and end tube sheets, to

provide maximum strength and long

tube life.

Closely spaced intermediate sup-

port sheets

Support sheets prevent tube sagging

and vibration, thereby increasing heat

exchanger life.

Refrigerant filter isolation valves

These valves allow filter replacement

without pumping down the chiller,

reducing service time and expense.

Microprocessor controls

The AquaForce 30XW screw chiller

controls communicate in easy to under-

stand English, making it as easy as pos-

sible to monitor and control each

chiller while maintaining fluid tempera-

tures. Controls are available with

French, Portuguese and Spanish as

standard configuration options. These

controls result in higher chiller reliabil-

ity, simplified training and correspond-

ingly lower operational and

maintenance costs.

Two user interface options are avail-

able, the Touch Pilot™ display and the

Navigator™ module.

The Touch Pilot display is an easy to

use touch screen display that provides

simple navigation for configuration and

control of the 30XW units.

Carrier's exclusive handheld Naviga-

tor display provides convenience and

powerful information in the palm of

your hand. The Navigator display helps

technicians to quickly diagnose prob-

lems and even prevent them from

occurring.

All 30XW units are ready to be used

with Carrier Comfort Network® (CCN)

devices.

Controls features include:

Automatic capacity override

This function unloads the compressor

whenever key safety limits are

approached, increasing unit life.

Chilled liquid reset

Reset can be accomplished manually or

automatically from the building man-

agement system. For a given capacity,

reset allows operation at slower com-

pressor speeds, saving energy when

warmer chilled liquid can be used.

Demand limiting

This feature limits the power draw of

the chiller during peak loading condi-

tions. When incorporated into the

CCN building automation system, a red

line command holds chillers at their

present capacity and prevents any

other chillers from starting. If a load

shed signal is received, the compres-

sors are unloaded to avoid demand

charges whenever possible.

Ramp loading

Ramp loading ensures smooth pull-

down of liquid loop temperature and

prevents a rapid increase in compres-

sor power consumption during the

pulldown period.

Automated controls test

The test can be executed prior to start-

up to verify that the entire control sys-

tem is functioning properly.

365-day real time clock

This feature allows the operator to pro-

gram a yearly schedule for each week,

weekends, and holidays.

Occupancy schedules

Schedules can be programmed into the

controller to ensure that the chiller

operates when cooling is required and

remains off when not needed by the

tenants or process.

4

Extensive service menu

Unauthorized access to the service

menu can be password-protected.

Built-in diagnostic capabilities assist in

troubleshooting and recommend

proper corrective action for pre-set

alarms, resulting in greater up time.

Alarm file

This file maintains the last 50 time and

date-stamped alarm and alert messages

in memory. This function reduces trou-

bleshooting time and cost.

Configuration data backup

Non-volatile memory provides protec-

tion during power failures and

eliminates time consuming control

reconfiguration.

Features/Benefits (cont)

Run Status

Service Test

Temperatures

Pressures

Setpoints

Inputs

Outputs

Configuration

Time Clock

Operating Modes

Alarms

ENTER

ESC

MODE

Alarm Status

ComfortLink

OPTIONAL NAVIGATOR™ DISPLAY

TOUCH PILOT™ DISPLAY

a30-3924

a30-4456

SMOOTH ROTARY COMPRESSOR

TWIN-SCREW DESIGN

30-562

5

Model number nomenclature

a30-4744

30XW – 325 6 – – – 4 – 3 B

30XW – AquaForce

®

Water-Cooled

Screw Chiller

Design Series

Unit Size (Nominal Tons) (kW)

325 – 325 (1133)

350 – 350 (1206)

400 – 400 (1354)

Voltage

1 – 575-3-60

2 – 380-3-60

4 – 230-3-60

6 – 460-3-60

7 – 200-3-60

Condenser Options

- – 2 Pass, NIH, 150 psig (1034 kPa), Victaulic, Discharge Connections (Std)

0 – 2 Pass, NIH, 150 psig (1034 kPa), Victaulic, Suction Connections

1 – 2 Pass, NIH, 150 psig (1034 kPa), Flange, Discharge Connections

2 – 2 Pass, NIH, 150 psig (1034 kPa), Flange, Suction Connections

3 – 2 Pass, NIH, 300 psig (2068 kPa), Victaulic, Discharge Connections

4 – 2 Pass, NIH, 300 psig (2068 kPa), Victaulic, Suction Connections

5 – 2 Pass, NIH, 300 psig (2068 kPa), Flange, Discharge Connections

6 – 2 Pass, NIH, 300 psig (2068 kPa), Flange, Suction Connections

7 – 2 Pass, MWB, 150 psig (1034 kPa), Victaulic, Discharge Connections

8 – 2 Pass, MWB, 150 psig (1034 kPa), Victaulic, Suction Connections

9 – 2 Pass, MWB, 300 psig (2068 kPa), Victaulic, Discharge Connections

B – 2 Pass, MWB, 300 psig (2068 kPa), Victaulic, Suction Connections

C – 2 Pass, MWB, 150 psig (1034 kPa), Flange, Discharge Connections

D – 2 Pass, MWB, 150 psig (1034 kPa), Flange, Suction Connections

F – 2 Pass, MWB, 300 psig (2068 kPa), Flange, Discharge Connections

G – 2 Pass, MWB, 300 psig (2068 kPa), Flange, Suction Connections

H – 1 Pass, NIH, 150 psig (1034 kPa), Flange, Discharge Leaving

J – 1 Pass, NIH, 300 psig (2068 kPa), Flange, Discharge Leaving

K – 1 Pass, MWB, 150 psig (1034 kPa), Flange, Discharge Leaving

L – 1 Pass, MWB, 300 psig (2068 kPa), Flange, Discharge Leaving

Heat Machine

- – Std Condenser/Comfort Cooling (Std)

M – Heat Machine Condenser/Comfort Cooling

Evaporator Options

- – 2 Pass, NIH, 150 psig (1034 kPa), Victaulic, Discharge Connections (Std)

0 – 2 Pass, NIH, 150 psig (1034 kPa), Victaulic, Suction Connections

1 – 2 Pass, NIH, 150 psig (1034 kPa), Flange, Discharge Connections

2 – 2 Pass, NIH, 150 psig (1034 kPa), Flange, Suction Connections

3 – 2 Pass, NIH, 300 psig (2068 kPa), Victaulic, Discharge Connections

4 – 2 Pass, NIH, 300 psig (2068 kPa), Victaulic, Suction Connections

5 – 2 Pass, NIH, 300 psig (2068 kPa), Flange, Discharge Connections

6 – 2 Pass, NIH, 300 psig (2068 kPa), Flange, Suction Connections

7 – 2 Pass, MWB, 150 psig (1034 kPa), Victaulic, Discharge Connections

8 – 2 Pass, MWB, 150 psig (1034 kPa), Victaulic, Suction Connections

9 – 2 Pass, MWB, 300 psig (2068 kPa), Victaulic, Discharge Connections

B – 2 Pass, MWB, 300 psig (2068 kPa), Victaulic, Suction Connections

C – 2 Pass, MWB, 150 psig (1034 kPa), Flange, Discharge Connections

D – 2 Pass, MWB, 150 psig (1034 kPa), Flange, Suction Connections

F – 2 Pass, MWB, 300 psig (2068 kPa), Flange, Discharge Connections

G– 2 Pass, MWB, 300 psig (2068 kPa), Flange, Suction Connections

H– 1 Pass, NIH, 150 psig (1034 kPa), Flange, Discharge Leaving

J– 1 Pass, NIH, 300 psig (2068 kPa), Flange, Discharge Leaving

K – 1 Pass, MWB, 150 psig (1034 kPa), Flange, Discharge Leaving

L – 1 Pass, MWB, 300 psig (2068 kPa), Flange, Discharge Leaving

M– 3 Pass, NIH, 150 psig (1034 kPa), Flange, Discharge Leaving

N – 3 Pass, NIH, 150 psig (1034 kPa), Flange, Suction Leaving

P – 3 Pass, NIH, 300 psig (2068 kPa), Flange, Discharge Leaving

Q– 3 Pass, NIH, 300 psig (2068 kPa), Flange, Suction Leaving

R – 3 Pass, MWB, 150 psig (1034 kPa), Flange, Discharge Leaving

S – 3 Pass, MWB, 150 psig (1034 kPa), Flange, Suction Leaving

T – 3 Pass, MWB, 300 psig (2068 kPa), Flange, Discharge Leaving

V – 3 Pass, MWB, 300 psig (2068 kPa), Flange, Suction Leaving

Packaging/Charging Options

B – R-134a Refrigerant with Bag (Std)

C – R-134a Refrigerant with Crate Over Bag

D – Nitrogen Refrigerant with Bag

F – Nitrogen Refrigerant with Crate Over Bag

Controls/Communications Options

- – Navigator™ Display

0 – Navigator Display, EMM

1 – Navigator Display, GFCI Service Option

2 – Navigator Display, EMM, GFCI Service Option

3 – Touch Pilot™ Display (Std)

4 – Touch Pilot, EMM

5 – Touch Pilot, GFCI Service Option

6 – Touch Pilot, EMM, GFCI Service Option

7 – Navigator Display, BACnet™ Translator

8 – Navigator Display, EMM, BACnet Translator

9 – Navigator Display, GFCI Service Option,

BACnet Translator

B – Navigator Display, EMM, GFCI Service Option,

BACnet Translator

C – Touch Pilot Display (Std), BACnet Translator

D – Touch Pilot Display, EMM, BACnet Translator

F – Touch Pilot Display, GFCI Service Option,

BACnet Translator

G– Touch Pilot Display, EMM, GFCI Service Option,

BACnet Translator

H – Navigator Display, LON Translator

J – Navigator Display, EMM, LON Translator

K – Navigator Display, GFCI Service Option,

LON Translator

L – Navigator Display, EMM, GFCI Service Option,

LON Translator

M – Touch Pilot Display (Std), LON Translator

N – Touch Pilot Display, EMM, LON Translator

P – Touch Pilot Display, GFCI Service Option,

LON Translator

Q– Touch Pilot Display, EMM, GFCI Service

Option, LON Translator

Electrical Options

- – Single Point, XL Starter, Terminal Block

(Std 380, 460, 575-v)

0 – Single Point, Wye-Delta Starter, Terminal

Block (Std 200,230-v)

3 – Dual Point, XL Starter, Terminal Block

4 – Dual Point, Wye-Delta Starter, Terminal Block

7 – Single Point, XL Starter, Non-Fused Disconnect

8 – Single Point, Wye-Delta, Non-Fused Disconnect

C – Dual Point, XL Starter, Non-Fused Disconnect

D – Dual Point, Wye-Delta Starter, Non-Fused

Disconnect

H – Single Point, XL Starter, Terminal Block, CPT

J – Single Point, Wye-Delta Starter, Terminal

Block, CPT

M– Dual Point, XL Starter, Terminal Block, CPT

N – Dual Point, Wye-Delta Starter, Terminal

Block, CPT

R – Single Point, XL Starter, Non-Fused

Disconnect, CPT

S – Single Point, Wye-Delta, Non-Fused

Disconnect, CPT

W– Dual Point, XL Starter, Non-Fused

Disconnect, CPT

X – Dual Point, Wye-Delta Starter, Non-Fused

Disconnect, CPT

Refrigeration Circuit Options

*

4 – Standard Unit

6 – With Suction Service Valves

D – With Minimum Load Control

G– With Suction Service Valves and Minimum

Load Control

N – With Condenser Insulation for Heat Machine

Q– With Suction Service Valves and Condenser

Insulation for Heat Machine

X – With Minimum Load Control and Condenser

Insulation for Heat Machine

Z – With Suction Service Valves, Minimum Load

Control and Condenser Insulation for

Heat Machine

LEGEND

*Evaporator insulation is standard.

Quality Assurance

Certified to ISO 9001:2000

CPT — Control Power Transformer MWB — Marine Waterbox

EMM — Energy Management Module NIH — Nozzle-In-Head

GFCI — Ground Fault Circuit Interrupter XL — Across-the-Line Start

LON — Local Operating Network

6

LEGEND

NOTES:

1. Certified in accordance with AHRI Standard 550/590 at standard

rating conditions.

2. Standard rating conditions are as follows:

Evaporator Conditions:

Leaving Water Temperature: 44 F (6.7 C)

Flow: 2.4 gpm per ton (0.043 L/s per kW)

Condenser Conditions:

Entering Water Temperature:85 F (29.4 C)

Flow: 3.0 gpm per ton (0.054 L/s per kW)

Fouling Factor (Evaporator):

0.00010 hr x sq ft x F per Btuh (0.000018 m2 x K per W)

Fouling Factor (Condenser):

0.00025 hr x sq ft x F per Btuh (0.000044 m2 x K per W)

3. IPLV is a single number part-load efficiency value calculated from

the system full-load efficiency values and corrected for a typical

building air-conditioning application.

4. Contact Carrier for custom ratings.

5. Data shown for standard chiller with 2 pass, nozzle-in-head (NIH)

waterboxes.

30XW

UNIT SIZE

CAPACITY INPUT

POWER

(kW)

EVAPORATOR

FLOW

EVAPORATOR

PRESSURE DROP

CONDENSER

FLOW

CONDENSER

PRESSURE DROP FULL LOAD

EFFICIENCY

(kW/Ton)

IPLV

(kW/Ton)

Tons Output

(kW) gpm L/s Ft of

Water kPa gpm L/s Ft of

Water kPa

325 322 1132.5 204.8 773 48.8 15.6 46.5 967 61.0 10.9 32.5 0.636 0.468

350 343 1206.3 215.7 824 52.0 17.5 52.2 1029 64.9 12.3 36.7 0.629 0.471

400 385 1354.0 242.8 924 58.3 21.5 64.1 1155 72.9 15.2 45.3 0.631 0.474

AHRI — Air Conditioning, Heating and Refrigeration Institute

IPLV — Integrated Part Load Value

Capacity ratings

7

30XW325-400 UNIT PHYSICAL DATA — ENGLISH

LEGEND

30XW UNIT SIZE 325 350 400

NOMINAL CAPACITY (tons) 325 350 400

UNIT WEIGHT (lb) (Operating/Shipping) 14,319/13,163 14,515/13,369 14,759/13,489

COMPRESSORS Semi-hermetic, twin screw

Compressor Speed (rpm) 3500

Compressor Model Number (qty) 06TU483 (2) 06TU554 (2)

Unloading Type Slide Valve

Minimum Step Capacity % (standard) 15%

Optional % 10%

Economizer No Yes

Temperature Relief Valve Connection (in. SAE Flare) (each circuit) —3/8

REFRIGERANT HFC, R-134a

Charge (lb) Circuit A 260 270

Charge (lb) Circuit B 260 270

OIL POE, SW-220

Charge (gal.) Circuit A 4

Charge (gal.) Circuit B 4

EVAPORATOR

Net Fluid Volume (gal.) 76.0

Maximum Refrigerant Pressure (psig) 220

Maximum Water Side Pressure (psig)

Standard 150

Optional 300

Water Connections

Inlet and Outlet (in.)

1-Pass NIH or MWB Flange (optional) 6

1-Pass NIH Victaulic (optional) 8

2-Pass NIH or MWB Flange (optional) 6

2-Pass NIH Victaulic (standard) 8

2-Pass MWB Victaulic (optional) 6

3-Pass NIH or MWB Flange (optional) 6

3-Pass NIH Victaulic (optional) 8

Drain (in. NPT) 3/8

Relief Valve Connection (in. NPTF) 3/4

Quantity Per Circuit 1

Relief Valve Setting (psig) 220

Flow Rate (lb air/min) 31.7

CONDENSER

Net Fluid Volume (gal.) 82.6

Maximum Refrigerant Pressure (psig)

Standard Condenser 220

Heat Machine 300

Maximum Water Side Pressure (psig)

Standard 150

Optional 300

Heat Machine 300

Water Connections

Inlet and Outlet (in.)

1-Pass NIH or MWB Flange (optional) 6

1-Pass NIH Victaulic (optional) 8

2-Pass NIH or MWB Flange (optional) 6

2-Pass NIH Victaulic (standard) 8

2-Pass MWB Victaulic (optional) 6

Drain (in. NPT) 3/8

Relief Valve Connection (in. NPTF) (Standard/Heat Machine) 3/4 / 3/4

Quantity Per Circuit 2/2

Relief Valve Setting (psig) 220/300

Flow Rate (lb air/min) 31.7/46.6

Temperature Relief Valve Connection (in. SAE Flare) 1/4

Discharge Line (Qty per Circuit) 1

Liquid Line (Qty per Circuit) 1

CHASSIS DIMENSIONS (ft-in.)

Length 13 - 3 3/4

Width 3 - 11 3/8

Height 6 - 6 11/16

HFC — Hydrofluorocarbon

MWB — Marine Waterbox

NIH — Nozzle-In-Head

NPTF — National Pipe Thread Female

POE — Polyolester

SAE — Society of Automotive Engineers

Physical data

8

30XW325-400 UNIT PHYSICAL DATA — SI

LEGEND

30XW UNIT SIZE 325 350 400

NOMINAL CAPACITY (kW) 1133 1206 1354

UNIT WEIGHT (kg) (Operating/Shipping) 6495/5971 6584/6064 6695/6119

COMPRESSORS Semi-hermetic, twin screw

Compressor Speed (r/s) 58.3

Compressor Model Number (qty) 06TU483 (2) 06TU554 (2)

Unloading Type Slide Valve

Minimum Step Capacity % (standard) 15%

Optional % 10%

Economizer No Yes

Temperature Relief Valve Connection (in. SAE Flare) (each circuit) —3/8

REFRIGERANT HFC, R-134a

Charge (kg) Circuit A 117.9 122.5

Charge (kg) Circuit B 117.9 122.5

OIL POE, SW-220

Charge (L) Circuit A 15.1

Charge (L) Circuit B 15.1

EVAPORATOR

Net Fluid Volume (L) 287.7

Maximum Refrigerant Pressure (kPa) 1517

Maximum Water Side Pressure (kPa)

Standard 1034

Optional 2068

Water Connections

Inlet and Outlet (in.)

1-Pass NIH or MWB Flange (optional) 6

1-Pass NIH Victaulic (optional) 8

2-Pass NIH or MWB Flange (optional) 6

2-Pass NIH Victaulic (standard) 8

2-Pass MWB Victaulic (optional) 6

3-Pass NIH or MWB Flange (optional) 6

3-Pass NIH Victaulic (optional) 8

Drain (in. NPT) 3/8

Relief Valve Connection (in. NPTF) 3/4

Quantity Per Circuit 1

Relief Valve Setting (kpa) 1517

Flow Rate (kg air/min) 14.38

CONDENSER

Net Fluid Volume (L) 312.7

Maximum Refrigerant Pressure (kPa)

Standard Condenser 1517

Heat Machine 2068

Maximum Water Side Pressure (kPa)

Standard 1034

Optional 2068

Heat Machine 2068

Water Connections

Inlet and Outlet (in.)

1-Pass NIH or MWB Flange (optional) 6

1-Pass NIH Victaulic (optional) 8

2-Pass NIH or MWB Flange (optional) 6

2-Pass NIH Victaulic (standard) 8

2-Pass MWB Victaulic (optional) 6

Drain (in. NPT) 3/8

Relief Valve Connection (in. NPTF) (Standard/Heat Machine) 3/4 / 3/4

Quantity Per Circuit 2/2

Relief Valve Setting (kpa) 1517/2068

Flow Rate (kg air/min) 14.38/21.1

Temperature Relief Valve Connection (in. SAE Flare) 1/4

Discharge Line (Qty per Circuit) 1

Liquid Line (Qty per Circuit) 1

CHASSIS DIMENSIONS (mm)

Length 4057.7

Width 1203.3

Height 1998.7

HFC — Hydrofluorocarbon

MWB — Marine Waterbox

NIH — Nozzle-In-Head

NPTF — National Pipe Thread Female

POE — Polyolester

SAE — Society of Automotive Engineers

Physical data (cont)

9

Factory-installed options

Navigator™ module provides a portable, hand-held dis-

play for convenient access to unit status, operation, config-

uration and troubleshooting diagnostics capability. The

four-line, 20-character LCD (liquid crystal display) display

provides clear language information in English, French,

Spanish, or Portuguese. The Navigator module features an

industrial grade extension chord and magnets located on

the back of the weatherproof enclosure to allow attach-

ment to sheet metal components for hands free operation.

BACnet™ translator control provides an interface

between the chiller and BACnet Local Area Network

(LAN, i.e., MS/TP EIA 485). The BACnet translator con-

trol is also available as a field-installed option.

LON translator control provides an interface between

the chiller and Local Operating Network (LON, i.e., LON-

Works FT-10A ANSI/EIA-709.1). The LON translator

control is also available as a field-installed option.

Energy management module provides energy manage-

ment capabilities to minimize chiller energy consumption.

Several features are provided with this module including

leaving fluid temperature reset, cooling set point reset or

demand limit control from a 4 to 20 mA signal, 2-point

demand limit control (from 0 to 100%) activated by a

remote contact closure, and discrete input for "Ice Done"

indication for ice stage system interface.

The 300 psig (2068 kPa) evaporator operating

pressure option allows operation for water-side pressure

up to 300 psig (2068 kPa).

The 300 psig (2068 kPa) condenser operating

pressure option allows operation for water-side pressure

up to 300 psig (2068 kPa).

Minimum load control allows additional capacity reduc-

tion for unit operation below the minimum step of unload-

ing via hot gas bypass.

Marine waterboxes provide water piping connections

extending from the side of the waterbox (as opposed to

extending from the end of the waterbox). This option also

includes a removable bolt on waterbox cover allowing

access to the heat exchanger tubes without breaking the

existing field piping. This option is available for both the

evaporator and condenser.

Flanged connection option provides an ANSI (Ameri-

can National Standards Institute) flange on the end of the

chiller water piping for connection to a customer supplied

mating flange in the field piping. This option is available

for both the evaporator and condenser.

One-pass evaporator provides a lower pressure drop

through the evaporator for applications with low delta T

(temperature) or high flow or where the evaporators are

piped in a series or side stream arrangement. One-pass

evaporator is only available with flanged connections and

with discharge end leaving water connection.

Three-pass evaporator provides a greater efficiency for

brine applications and in applications with a high delta T

and low flow. Three-pass evaporator is only available with

flanged connections.

Heat machine condenser allows operation with up to

140 F (60 C) leaving condenser water temperature (see

E-CAT for selections). In addition, this option provides

factory-installed thermal insulation on the condenser,

condenser flow switch and leaving condenser water

ITEM

FACTORY-

INSTALLED

OPTION

FIELD-

INSTALLED

ACCESSORY

Controls Options

Navigator Hand-Held Display XX

Remote Enhanced Display X

BACnet Translator Control XX

LON Translator Control XX

Energy Management Module XX

Evaporator Options

One-Pass Evaporator Head X

Three-Pass Evaporator Head X

Marine Waterboxes X

Flanged Connections X

Suction Service Valve X

300 psig (2068 kPa) Operating Pressure X

Condenser Options

Heat Machine Condenser X

One-Pass Condenser Head X

Marine Waterboxes X

Flanged Connections X

300 psig (2068 kPa) Operating Pressure X

Starter Options

Wye-Delta Starter X

Dual Point Power X

Non-Fused Disconnect X

Control Transformer X

115-v GFCI Convenience Outlet X

Unit Options

Minimum Load Control X

Temperature Reset Sensor X

Nitrogen Charge X

Crate for Shipment X

Vibration Pads X

Vibration Isolation Springs X

Options and accessories

a30-4684.eps

a30-4685

10

temperature sensor to facilitate operating in HEAT mode.

Heat machine units require 300 psig (2068 kPa) option

and field-installed thermal insulation on the compressor

discharge piping and waterbox heads because of high

temperature.

One-pass condenser provides a lower pressure drop

through the condenser for applications with low delta T

(temperature) or high flow or where the condensers are

piped in a series. The one-pass condenser option is only

available with flanged connections and with a discharge

end leaving water connection.

Wye-delta start is an alternate starting method which

reduces the inrush current when starting the compressor.

Wye delta start is standard on 208-v, and 230-v units,

optional for 380-v, 460-v, and 575-v.

Dual point power provides a means for connecting two

sources of power to dual compressor 30XW chillers. One

source of power is wired to operate the compressor on the

A circuit and one source of power is wired to operate the

compressor on the B circuit of the chiller.

Non-fused disconnect provides a no load, lockable,

through the door handle disconnect for unit power on the

chiller. On dual point power, one disconnect is provided for

each of the two main power supplies. This disconnect does

not remove the control circuit from power supply.

Control transformer is sized to supply the needs of the

control circuit from the main power supply.

115-v GFCI convenience outlet includes 4 amp GFI

(ground fault interrupt) receptacle. Convenience outlet is

115-v female receptacle. Not available with 380-v units.

Nitrogen charge provides a 15 lb (6.8 kg) charge of

nitrogen instead of a full factory charge of R-134a refrig-

erant to keep the chiller refrigerant circuit dry during ship-

ment. This option is recommended for applications where

the unit will be disassembled prior to installation. Units

shipped with a nitrogen charge will receive an electrical

continuity test at the factory prior to shipment.

Crate for shipment provides a wooden crate around the

chiller. The chiller is bagged prior to being placed in the

crate. This option is recommended for export orders.

Suction service valves allow for further isolation of the

compressor from the evaporator vessel.

Field-installed accessories

Remote enhanced display is a remotely mounted

indoor 40-character per line, 16-line display panel for unit

monitoring and diagnostics.

BACnet™ translator control provides an interface

between the chiller and BACnet Local Area Network

(LAN, i.e., MS/TP EIA 485). The BACnet translator con-

trol is also available as a factory-installed option.

LON translator control provides an interface between

the chiller and Local Operating Network (LON, i.e., LON-

Works FT-10A ANSI/EIA-709.1). The LON translator

control is also available as a factory-installed option.

Energy management module provides energy manage-

ment capabilities to minimize chiller energy consumption.

Several features are provided with this module including

leaving fluid temperature reset, cooling set point reset or

demand limit control from a 4 to 20 mA signal, 2-point

demand limit control (from 0 to 100%) activated by a

remote contact closure, and discrete input for "Ice Done"

indication for ice stage system interface.

Temperature reset sensor provides temperature reset

capability from either the occupied space or outdoor tem-

perature sensor.

NOTE: Temperature reset capability using return tempera-

ture is standard.

Vibration isolation pads are neoprene pads for installa-

tion under the chiller feet at the jobsite.

Vibration springs provide a set of non-siesmic spring

isolators for installation at the jobsite.

Navigator™ module provides a portable, hand-held dis-

play for convenient access to unit status, operation, config-

uration and troubleshooting diagnostics capability. The

four-line, 20-character LCD (liquid crystal display) display

provides clear language information in English, French,

Spanish, or Portuguese. The Navigator module features an

industrial grade extension chord and magnets located on

the back of the weatherproof enclosure to allow attach-

ment to sheet metal components for hands free operation.

Field-supplied and field-installed insulation

Evaporator waterbox insulation must be field installed.

When insulating waterboxes, allow for service access and

removal of covers. To estimate waterbox cover areas, refer

to the following figure.

Insulation for discharge piping between the compres-

sor and condenser must be field installed on heat machine

units. Refer to the following figure.

Condenser waterbox insulation must be field installed

on heat machine units. When insulating waterboxes, allow

for service access and removal of covers. To estimate

waterbox cover areas, refer to the following figure.

Options and accessories (cont)

11

FIELD-SUPPLIED AND FIELD-INSTALLED INSULATION

CONDENSER WATERBOX

INSULATION NEEDED (HEAT

MACHINE UNITS ONLY)

CONDENSER WATERBOX

INSULATION NEEDED (HEAT

MACHINE UNITS ONLY)

EVAPORATOR WATERBOX

INSULATION NEEDED EVAPORATOR WATERBOX

INSULATION NEEDED

EVAPORATOR WATERBOX

INSULATION NEEDED

DISCHARGE PIPING

INSULATION NEEDED (HEAT

MACHINE UNITS ONLY)

NOTES:

1. Field-installed insulation for standard units shown in light gray.

2. Field-installed insulation for heat machine units shown in dark gray.

3. Back of the unit shown.

a30-4686

12

Dimensions

30XW UNIT DIMENSIONS

30XW UNIT AND WATERBOX DIMENSIONS

NOTES:

1. Operating weight includes weight of water, refrigerent, and oil.

2. Denotes center of gravity.

3. Dimensions shown in ft-in. [mm] unless noted.

4. The recommended service clearance around the machine is 3 ft [914.4 mm].

5. Victaulic nozzles are standard on all units. A flow switch can be factory-installed in evaporator inlet victaulic nozzle.

6. Maximum fluid side pressure of condenser or evaporator is 150 psig [1034 kPa] (standard) or 300 psig [2068 kPa] (optional).

7. Operating weight includes weight of water, refrigerant, and oil.

CONNECTIONS PASSES WATERBOX

(EVAP/COND)

NOZZLE

TYPE

D

ft-in. [mm]

E

ft-in. [mm]

F

ft-in. [mm]

MAX UNIT OPERATING WEIGHT lb [kg]

325 350 400

Same Ends

2 Pass

NIH/NIH Victaulic 13-33/4 [4057]

3-113/8 [1210] 6-611/16 [1999]

14,319 [6495] 14,515 [6495] 14,759 [6695]

Flange 13-91/16 [4193] 14,651 [6646] 14,847 [6646] 15,091 [6845]

NIH/MWB Victaulic

13-115/8 [4258]

14,498 [6576] 14,694 [6576] 14,938 [6776]

Flange 14,739 [6685] 14,935 [6685] 15,179 [6885]

MWB/NIH Victaulic 14,489 [6572] 14,685 [6572] 14,929 [6772]

Flange 14,746 [6689] 14,768 [6689] 15,012 [6809]

MWB/MWB Victaulic 14,668 [6653] 14,864 [6653] 15,108 [6853]

Flange 14,834 [6729] 15,030 [6729] 15,274 [6928]

Opposite Ends

NIH/NIH Victaulic 13-65/16 [4123]

3-113/8 [1210] 6-611/16 [1999]

14,319 [6495] 14,515 [6495] 14,759 [6695]

Flange 14-47/16 [4380] 14,651 [6646] 14,847 [6646] 15,091 [6845]

NIH/MWB Victaulic 14-23/16 [4323] 14,498 [6576] 14,694 [6576] 14,938 [6776]

Flange 14-615/16 [4443] 14,739 [6685] 14,935 [6685] 15,179 [6885]

MWB/NIH Victaulic 14-213/16 [4339] 14,489 [6572] 14,685 [6572] 14,929 [6772]

Flange 14-83/16 [4475] 14,746 [6689] 14,768 [6689] 15,012 [6809]

MWB/MWB Victaulic 14-1011/16 [4539] 14,668 [6653] 14,864 [6653] 15,108 [6853]

Flange 14,834 [6729] 15,030 [6729] 15,274 [6928]

1 or

3 Pass

NIH/NIH Flange 14-55/8 [4410] 14,828 [6726] 15,024 [6726] 15,268 [6925]

NIH/MWB Flange

14-1011/16 [4539]

15,223 [6905] 14,768 [6896] 15,012 [6809]

MWB/NIH Flange 15,244 [6915] 15,440 [6894] 15,684 [7114]

MWB/MWB Flange 15,581 [7067] 15,777 [7063] 16,021 [7267]

SUCTION

END

DISCHARGE

END

EVAPORATOR

CONDENSER

SEE NIH CONDENSER

DETAIL FOR NOZZLE

MEASUREMENTS

SEE NIH EVAPORATOR

DETAIL FOR NOZZLE

MEASUREMENTS

MLV (OPTIONAL) MLV (OPTIONAL)

a30-4745

STANDARD 30XW UNIT DIMENSIONS

NOTES:

1. Weights shown for standard chiller (2 pass with NIH, victaulic waterboxes).

2. See page 14 for unit mounting locations.

30XW UNIT

SIZE

OPERATING

WEIGHT, lb [kg]

MOUNTING LOCATION WEIGHT, lb [kg] DIMENSIONS (ft-in. [mm])

1234ABC

325 14,319 [6495] 3734 [1694] 3828 [1736] 3337 [1514] 3420 [1551] 6-3/8 [1837] 6-3/8 [1837] 3/8 [9.53]

350 14,515 [6584] 3785 [1717] 3880 [1760] 3383 [1535] 3467 [1573] 6-3/8 [1837] 6-3/8 [1837] 3/8 [9.53]

400 14,759 [6695] 3848 [1745] 3946 [1790] 3439 [1560] 3526 [1599] 6-3/8 [1837] 6-3/8 [1837] 3/8 [9.53]

LEGEND

MLV — Minimum Load Valve

MWB — Marine Waterbox

NIH — Nozzle-In-Head

SSV — Suction Service Valve

13

30XW UNIT DIMENSIONS (cont)

D

DISCHARGE

END

SUCTION

END

a30-4747

INCOMING CONTROL

INCOMING CONTROL

POWER 1 x 7/8”

POWER 1 x 7/8”

KNOCKOUT

KNOCKOUT

DOOR CLEARANCE SPACE

DOOR CLEARANCE SPACE

DISCHARGE

END

SUCTION

END

a30-4748

EVAP

3 3/16”

[81 mm]

a30-4755

14

Dimensions (cont)

30XW UNIT DIMENSIONS (cont)

WATERBOX FLANGE DETAIL

a30-4725

UNIT NUMBER OF

PASSES

A

in. (mm)

B

in. (mm)

CONNECTION SIZE

Flange Victaulic

30XW325-400

26

1/16 (154) 61/16 (154) 6 8

10 (0)0 (0)68

36

1/16 (154) 61/16 (154) 6 8

UNIT NUMBER OF

PASSES

A

in. (mm)

B

in. (mm)

CONNECTION SIZE

Flange Victaulic

30XW325-400

27

1/2 (191) 71/2 (191) 6 6

1 0 (0) 0 (0) 6 —

37

1/2 (191) 71/2 (191) 6 —

UNIT NUMBER OF

PASSES

A

in. (mm)

B

in. (mm)

CONNECTION SIZE

Flange Victaulic

30XW325-400 26

3/4 (171) 63/4 (171) 6 8

1 0 (0) 0 (0) 6 8

UNIT NUMBER OF

PASSES

A

in. (mm)

B

in. (mm)

CONNECTION SIZE

Flange Victaulic

30XW325-400 27

3/8 (187) 73/8 (187) 6 6

1 0 (0) 0 (0) 6 —

NIH EVAPORATOR

DISCHARGE DISCHARGEDISCHARGE

SUCTION SUCTIONSUCTION

a30-4751 NIH CONDENSER

DISCHARGE

SUCTION

DISCHARGE

SUCTION

a30-4749

MARINE EVAPORATOR

DISCHARGE DISCHARGEDISCHARGE

SUCTION SUCTIONSUCTION

a30-4752

MARINE CONDENSER

DISCHARGE DISCHARGE

SUCTION SUCTION

a30-4750

MOUNTING

LOCATIONSa30-4688

15

Carrier’s packaged selection program provides quick,

easy selection of Carrier’s water-cooled chillers. The pro-

gram considers specific temperature, fluid and flow

requirements among other factors such as fouling and alti-

tude corrections.

Before selecting a chiller, consider the following points:

Leaving water (fluid) temperature (LWT)

• The LWT must be at least 40 F (4.4 C) or greater.

• If the LWT requirement is greater than 60 F (15.5 C), a

mixing loop is required.

Entering water (fluid) temperature (EWT)

• If the EWT requirement is greater than 70 F (21.1 C), a

mixing loop is required. The EWT should not exceed

70 F (21.1 C) for extended operation. Pulldown can be

accomplished from 95 F (35 C).

Evaporator flow rate or evaporator delta-T:

• The evaporator delta-T (EWT – LWT) must fall between

5 and 20° F (2.8 and 11.1° C) while still meeting the

maximum entering requirements.

• For larger or smaller delta-T applications, a mixing loop

is required. If the evaporator flow is variable, the rate of

change of flow should not exceed 10% per minute.

The loop volume in circulation must equal or exceed

3 gallons per nominal ton (3.2 L per kW) of cooling for

temperature stability and accuracy in normal air condi-

tioning applications. In process cooling applications,

there should be 6 to 10 gallons per ton (6.5 to 10.8 L

per kW). To achieve this loop volume, it is often neces-

sary to install a tank in the loop. The tank should be baf-

fled to ensure there is no stratification, and that water

(or brine) entering the tank is adequately mixed with liq-

uid in the tank. See Water Loop Volume in the Applica-

tion Data section.

Evaporator pressure drop:

• A high evaporator pressure drop can be expected when

the evaporator delta-T is low. A mixing loop can help to

alleviate this situation.

• The three-pass evaporator option is recommended to

increase performance when the evaporator delta T is

high. This is particularly helpful with brine applications.

Condenser pressure drop:

• A high condenser pressure drop can be expected when

the condenser delta-T is low. A one-pass condenser can

help lower pressure drop.

Series chillers:

• One-pass heat exchangers can help lower pressure

drop when heat exchangers are placed in series.

Water quality, fouling factor:

• Poor water quality can increase the required evaporator

fouling factor.

• Higher than standard fouling factors lead to lower

capacity and higher input kW from a given chiller size

compared to running the same application with better

water quality (and lower fouling factors).

Temperature reset:

• Return water (standard)

• Outside air temperature (standard)

• Space temperature (accessory sensor required)

• 4 to 20 mA (requires an energy management module)

Demand limit:

• 2-step (requires an energy management module)

• 4 to 20 mA (requires an energy management module)

• CCN Loadshed

Performance data

EVAPORATOR AND CONDENSER FLOW RATES

*Maximum condenser fluid temperature shown for standard condensing

option. Heat machine option may have leaving fluid temperatures up to

140 F (60 C).

30XW UNIT

EVAPORATOR CONDENSER NOMINAL

Leaving Fluid/Entering Fluid Minimum Entering

Fluid

Maximum Leaving

Fluid Evaporator Condenser

Minimum Maximum

40 F (4.4 C)/

45 F (7.2 C)

60 F (15.6 C)/

70 F (21.1 C) 65 F (18.3 C) 118 F (47.8 C)*

Minimum

Flow Rate

Maximum

Flow Rate

Minimum

Flow Rate

Maximum

Flow Rate

Nominal

Flow Rate

Nominal

Flow Rate

GPM L/s GPM L/s GPM L/s GPM L/s GPM L/s GPM L/s

325

Two pass 411 25.9 1481 93.4 494 31.1 1974 124.5 790 49.8 987 62.3

One pass 790 49.8 3126 197.2 987 62.3 3290 207.6 790 49.8 987 62.3

Three pass 247 15.6 987 62.3 — — — — 790 49.8 — —

350

Two pass 433 27.3 1557 98.2 519 32.7 2076 131.0 830 52.4 1038 65.5

One pass 830 52.4 3287 207.4 1038 65.5 3460 218.3 830 52.4 1038 65.5

Three pass 260 16.4 1038 65.5 — — — — 830 52.4 — —

400

Two pass 486 30.7 1751 110.4 584 36.8 2334 147.3 934 58.9 1167 73.6

One pass 934 58.9 3696 233.1 1167 73.6 3890 245.4 934 58.9 1167 73.6

Three pass 292 18.4 1167 73.6 — — — — 934 58.9 — —

Selection procedure

16

Performance data (cont)

30XW325-400 EVAPORATOR MARINE WATERBOX

0 500 1000 1500 2000 2500 3000

(0) (31.5) (63.1) (94.6) (126.2) (157.7) (189.3)

3

2

1

pass

pass

pass

gpm

(L/s)

Evaporator Flow Rate

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

ft wg

(0)

(14.9)

(29.8)

(44.8)

(59.7)

(74.6)

(89.5)

(104.4)

(119.4)

(kPa)

Pressure Drop

NOTE: The table above represents pressure drops only. The table does not imply that the chiller can be properly applied over

the entire range of evaporator water flow rates represented. A30-4691

0 500 1000 1500 2000

(0) (31.5) (63.1) (94.6) (126.2)

Evaporator Flow Rate

3

2

1 pass

pass

pass

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

ft wg

gpm

(L/s)

(0)

(14.9)

(29.8)

(44.8)

(59.7)

(74.6)

(89.5)

(104.4)

(119.4)

(kPa)

Pressure Drop

LEGEND

NOTE: The table above represents pressure drops only. The table does not imply that the chiller can be properly applied over the

entire range of evaporator water flow rates represented.

NIH — Nozzle-In-Head

30XW325-400 EVAPORATOR NIH FLANGE

A30-4692

17

3

0 500 1000 1500 2000 2500 3000

(0) (31.5) (63.1) (94.6) (126.2) (157.7) (189.3)

Evaporator Flow Rate

21

pass

pass pass

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

ft wg

(0)

(14.9)

(29.8)

(44.8)

(59.7)

(74.6)

(89.5)

(104.4)

(119.4)

(kPa)

Pressure Drop

gpm

(L/s)

30XW325-400 EVAPORATOR NIH VICTAULIC

LEGEND

NOTE: The table above represents pressure drops only. The table does not imply that the chiller can be properly applied over the

entire range of evaporator water flow rates represented.

NIH — Nozzle-In-Head A30-4693

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

ft wg

gpm

(L/s)

(0)

(14.9)

(29.8)

(44.8)

(59.7)

(74.6)

(89.5)

(104.4)

(119.4)

(kPa)

0 500 1000 1500 2000 2500 3000 3500

(0) (31.5) (63.1) (94.6) (126.2) (157.7) (189.3) (220.8)

Condenser Flow Rate

Pressure Drop

2 pass 1

p

ass

NOTE: The table above represents pressure drops only. The table does not imply that the chiller can be properly applied over the

entire range of condenser water flow rates represented.

30XW325-400 CONDENSER MARINE WATERBOX

A30-4694

18

Performance data (cont)

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

ft wg

(0)

(14.9)

(29.8)

(44.8)

(59.7)

(74.6)

(89.5)

(104.4)

(119.4)

(kPa)

0 500 1000 1500 2000 2500

(0) (31.5) (63.1) (94.6) (126.2) (157.7)

Condenser Flow Rate

Pressure Drop

2 pass 1 pass

gpm

(L/s)

30XW325-400 CONDENSER NIH FLANGE

LEGEND

NOTE: The table above represents pressure drops only. The table does not imply that the chiller can be properly applied over the entire

range of evaporator water flow rates represented.

NIH — Nozzle-In-Head A30-4695

2 pass 1 pass

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

ft wg

gpm

(L/s)

(0)

(14.9)

(29.8)

(44.8)

(59.7)

(74.6)

(89.5)

(104.4)

(119.4)

(kPa)

0 500 1000 1500 2000 2500 3000 3500

(0) (31.5) (63.1) (94.6) (126.2) (157.7) (189.3) (220.8)

Condenser Flow Rate

Pressure Drop

30XW325-400 CONDENSER NIH VICTAULIC

LEGEND

NOTE: The table above represents pressure drops only. The table does not imply that the chiller can be properly applied over the

entire range of evaporator water flow rates represented.

NIH — Nozzle-In-Head A30-4696

19

Microprocessor

The chiller microprocessor controls overall unit operation

and controls a number of processes simultaneously. These

processes include internal timers, reading inputs, analog to

digital conversions, display control, diagnostic control, out-

put relay control, demand limit, capacity control, head

pressure control, and temperature reset. Some processes

are updated almost continuously, others every 2 to 3 sec-

onds, and some every 30 seconds. The microprocessor

routine is started by switching the emergency ON-OFF

switch to the ON position.

Control sequence

Pre-start — After control switches on, the prestart takes

place. The microprocessor checks itself, and if configured,

energizes the evaporator and condenser pumps to the

internal (or CCN) time schedule (or input occupied signal

from an external system) and waits for temperature to

stabilize.

Start-up — The chiller will receive a call for cooling when

chilled fluid temperature increases above the set point plus

a dead band, or if an override start command is received.

If flow has been proven, the first compressor starts 1 to 3

minutes after the call for cooling. The controlled pulldown

feature limits compressor loading on start up to reduce

demand on start up and unnecessary compressor usage.

Capacity control — On the first call for cooling, the

microprocessor starts the compressor on the lead circuit.

The microprocessor maintains leaving fluid temperature

set point through intelligent positioning of the slide valve.

As the load increases above the compressor's capacity, the

compressor on the lag circuit is started and both compres-

sors are staged together.

Maintaining set point — The control monitors entering

and leaving chilled water temperature to anticipate

changes in cooling load. The speed at which capacity is

added or reduced is controlled by temperature deviation

from set point and rate of temperature change of the

chilled fluid. The basic logic for determining when to add

or remove capacity is a time band integration of deviation

from set point plus rate of change of leaving fluid tempera-

ture. When leaving-fluid temperature is close to the set

point and slowly moving closer, logic prevents additional

capacity. Accuracy depends on loop volume, loop flow

rate, load and condenser water temperatures.

Return fluid temperature compensation — No adjust-

ment for cooling range or evaporator flow rate is required

because the control automatically compensates for cooling

range by measuring both return fluid temperature and leav-

ing fluid temperature.

Low temperature override — This feature prevents

LWT (leaving water temperature) from overshooting the

set point to prevent nuisance low suction temperature

trips.

High temperature override — This feature allows the

chiller to add capacity quickly during rapid load variations.

Temperature reset (chilled water reset) — When

latent loads in the conditioned space are reduced, it may be

possible to reset the leaving chilled water temperature set

point to a warmer temperature thereby reducing compres-

sor power usage and saving energy. Three reset options

are offered. With any chilled water reset application, hu-

midity control should be considered since higher coil tem-

peratures will reduce latent capacity. For details on apply-

ing a reset option, refer to the Controls, Start-Up, Opera-

tion, Service and Troubleshooting guide.

Return fluid temperature reset — This feature

increases LWT set point as return (entering) fluid tempera-

ture decreases (indicating load decrease). This option may

be used where return fluid temperature provides accurate

load indication. No additional hardware is required.

Outdoor-air temperature reset — This feature

increases LWT set point as outdoor ambient temperatures

decreases (indicating load decrease). This reset should only

be applied where outdoor ambient temperature is an indi-

cation of load. A field-installed thermistor is required.

Space temperature reset — This feature increases the

LWT as space temperature decreases (indicating load

decrease). This reset should only be applied where space

temperature is an indication of load. A field-supplied ther-

mistor is required.

Minimum load control — The main base board (MBB)

responds to the supply chilled water temperature to match

cooling load requirements and controls the minimum load

control valve. The minimum load control valve allows hot

gas to pass directly into the evaporator circuit permitting

the unit to operate at lower loads with less compressor

cycling. Minimum load control should be given consider-

ation when operation is anticipated below the minimum

unloading step.

Pull down control — If pulldown control has been

selected (adjustable setting), no additional capacity is added

as long as the difference between fluid temperature and the

set point is greater than 4 F (2.2 C) and rate of change in

leaving water temperature is greater than the 90 seconds

since the last capacity change, compressors will continue

to run unless a safety device trips. This prevents rapid

cycling and also helps return oil during short operating

periods.

Maximum operating pressure control — If the enter-

ing fluid temperature is 95 F (35 C) and the saturated suc-

tion temperature is 50 F (10 C) or higher, the maximum

operating pressure (MOP) feature limits the suction to keep

the chiller online. The control automatically starts the

chiller in the unloaded state to eliminate the potential of

compressor overload due to high head pressure or low suc-

tion pressure.

Equalized run time — The controller will equalize run

time on each circuit through the lead / lag feature. If a cir-

cuit becomes disabled, the control will automatically set the

active circuit to lead, keeping the chiller online at a reduced

capacity.

Sensors — Thermistors are used to control temperature

sensing inputs to the microprocessor. No additional ther-

mistor sensors are required for leaving chilled water tem-

perature, optional return water reset, or outdoor air reset.

The following sensors can be used on 30XW units:

• Evaporator leaving fluid temperature (T1)

Controls

20

• Evaporator entering fluid temperature (T2)

• Suction gas temperature (T4 - Circuit A, T7 - Circuit B)

• Economizer gas temperature (T5 - Circuit A, T11 -

Circuit B) (sizes 350, 400 only)

• Space temperature (T8)

• Discharge gas temperature (T9 - Circuit A, T10 -

Circuit B)

• Condenser entering fluid temperature (T12)

• Condenser leaving fluid temperature (T13)

• Compressor motor temperature

There are 3 (size 325) or 4 (sizes 350, 400) refrigerant

pressure transducers used in each circuit for sensing suc-

tion, discharge, oil, and economizer (sizes 350, 400) pres-

sure. The microprocessor uses these inputs to control

capacity.

• Saturated condensing temperature

• Evaporator saturation temperature

Electronic expansion valve (EXV) — The EXV con-

trols refrigerant flow to the evaporator for different operat-

ing conditions by varying an orifice size to increase or

decrease the flow area through the valve based on micro-

processor input. The orifice is positioned by a stepper

motor through approximately 3,600 discrete steps and is

monitored every 3 seconds.

Safeties

Abnormal conditions — All control safeties in the chiller

operate through compressor protection board, control

relays or the chiller microprocessor. Loss of feedback sig-

nal to the MBB will cause the compressor(s) to shut down.

For other safeties, the microprocessor makes appropriate

decision to shut down a compressor due to a safety trip or

bad sensor reading and displays the appropriate failure

code on the display. Chiller holds in safety mode until

reset; it then reverts to normal control when the unit is

reset.

Low-pressure safety — This safety will shut down the

chiller and display the appropriate alarm code if the system

pressure drops below configured minimums.

High-pressure safety — This safety will shut down the

chiller and display the appropriate alarm code if the com-

pressor discharge pressure increases to 185 psig for stan-

dard condenser units or 250 psig for high condensing or

heat machine units.

Compressor anti-cycling — This feature monitors com-

pressor starts to limit compressor cycling during periods of

low load.

Loss of flow protection — This feature will shut off the

chiller if the detected flow is below the configured mini-

mum flow rate. Thermal dispersion flow switches are

installed in 30XW chillers to confirm evaporator flow.

Sensor failures — The microprocessor monitors tem-

perature and pressure sensors to ensure readings are

within the expected range. Loss of communication to a

sensor or readings outside of the expected range will

prompt corrective action.

Other safeties — Other safety features include electric

overload, thermal overload protection, oil pressure, loss of

refrigerant charge, loss of phase protection, reverse

rotation protection (prevents compressor start), current

imbalance, and ground current.

Demand limit function — This function can be used to

limit the total power draw of the chiller to a user-defined

set point. The optional energy management module is

required and can provide either 2-step or 4 to 20 mA

demand limit. This optional electronic board interfaces

with the microprocessor to control the number of com-

pressors operating and their operating capacity to limit

power consumption to the user specified value.

The microprocessor can control the number of compres-

sors operating and their operating capacity to limit power

consumption to the user specified value.

Diagnostics — The microprocessor includes a service

test feature that displays the condition of each sensor and

switch in the chiller and allows the observer to check for

proper operation of the compressors. Refer to the Con-

trols, Start Up, Operation, Service and Troubleshooting

guide for further information.

Default settings — To facilitate quick start-ups, 30XW

chillers are pre-configured with a default setting that

assumes stand-alone operation with a 44 F (6.6 C) chilled

water set point. Configuration settings will be based on any

options or accessories included with the unit at the time of

manufacturing. Date and time are set to U.S.A. Eastern

Time zone and will need reconfiguring based on location

and local time zone. If operation based on occupancy

schedule is desired, the schedule must be set during

installation.

Additional information — Detailed information on con-

trols and operation is available in the Controls, Start-Up,

Operation, Service and Troubleshooting guide included

with each unit. Packaged Service Training programs are

also available. Contact your local Carrier representative for

more information.

Controls (cont)

21

Typical control wiring schematics

30XW UNIT CONTROL WIRING SCHEMATIC

LEGEND

AWG — American Wire Gage NEC — National Electrical Code

CB — Circuit Breaker PMP — Chilled Water Pump

COM — Communication Port PMPI — Chilled Water Pump Interlock

EMM — Energy Management Module TB — Ter m i n al B l o ck

EQUIP GND — Equipment Ground Field Power Wiring

FIOP — Factory-Installed Option Field Control Wiring

MLV — Minimum Load Valve Factory-Installed Wiring

NOTES:

1. Factory wiring is in accordance with UL 1995 standards. Field modifica-

tions or additions must be in compliance with all applicable codes.

2. Wiring for main field supply must be rated 75C minimum. Use copper for

all units. Incoming wire size range for the terminal block is #4 AWG to

500 kcmil for single point power (two conductors per phase). Incoming

wire size range for the terminal blocks for dual point power option is

#4 AWG to 500 kcmil for single point power (one conductor per phase).

Incoming wire size range for 200/300-v models is 3/0 to 500 kcmil for sin-

gle point power (one conductor per phase).

3. Terminals 9 and 10 of TB5 are for field external connections for remote

on-off. The contacts must be rated for dry circuit application capable of

handling a 24-vac load up to 50 mA.

4. Terminals 1 and 2 of TB5 are for external connections of chilled water

pump interlock. The contacts must be rated for dry circuit application

capable of handling a 24-vac load up to 50 mA.

5. Terminals 11 and 13 of TB5 are for control of chilled water pump 1

(PMP 1) starter. Terminals 15 and 13 of TB5 are for control of chilled

water pump 2 (PMP 2) starter. Remove factory-installed jumper when

using pump interlock. The maximum load allowed for the chilled water

pump relay is 5-va sealed, 10-va inrush at 24-v. Field power supply is not

required.

6. For control of chilled water pumps, a set of normally open contacts rated

for dry circuit application must be supplied from field-supplied pump

starter relay. Connect contacts directly to connector at main base board

channel 18.

7. Terminals 12 and 13 of TB5 are for an alarm relay. The maximum load

allowed for the alarm relay is 10-va sealed, 25-va inrush at 24-v. Field

power supply is not required.

8. Make appropriate connections to TB6 as shown for energy management

board options. The contacts for occupancy override, demand limit, and

ice done options must be rated for dry circuit application capable for han-

dling a 24-vac load up to 50 mA.

9. Terminal blocks TB5 and TB6 are located in the display panel box for all

units. Refer to certified dimensional drawing for each unit to get the exact

locations.

10. Refer to certified dimensional drawings for exact locations of the main

power and control power entrance locations.

11. For control of condenser pump, connect field-supplied relay (max 5-va

sealed, 10-va inrush at 24-v) directly to connector at main base board

channel 22.

12. For head pressure control option, 0-10-vdc signal wires are factory-

installed (violet and brown) from HGBP/COND board channel 9. Refer to

controls manual for application with field-supplied water regulating valve.

a30-4697

22

Unit storage

Store chiller and starter indoors, protected from construc-

tion dirt and moisture. Inspect under shipping tarps, bags,

or crates to be sure water has not collected during transit.

Keep protective shipping covers in place until machine is

ready for installation. Assure that the inside of the protec-

tive cover meets the following criteria:

• Temperature is between 40 F (4.4 C) and 120 F

(48.9 C)

• Relative humidity is between 10% and 80% (non-

condensing)

Chiller location

Unit should be located indoors on a level surface in an area

with temperatures between 50 F (10 C) and 104 F (40 C).

Clearance should be provided around the unit for service

and local code requirements. See dimensional drawings for

specific unit clearance requirements. Consideration should

be given to using rubber-in-shear pads. For applications

other than ground to slab, it is recommended spring isola-

tors are used to minimize structure borne transmission.

Acoustic consideration should be given near sound sensi-

tive areas.

Relief valve vent lines:

1. Vent per local code requirements.

2. Each chiller has 2 relief valves on the evaporator, 2

on the condenser and one relief valve on each com-

pressor discharge line.

Strainers

A screen strainer with minimum screen size of 20 mesh

must be installed within 10 ft (3 m) of the inlet pipe con-

nection to both the evaporator and condenser to prevent

debris from damaging internal tubes of the evaporator. The

pump strainer shall not be used to meet this requirement.

Oversizing chillers

Oversizing chillers by more than 15% at design conditions

should be avoided as the system operating efficiency is

adversely affected (resulting in greater or excessive electri-

cal demand). When future expansion of equipment is antic-

ipated, install a single chiller to meet present load

requirements and add a second chiller to meet the addi-

tional load demand. It is also recommended that 2 smaller

chillers be installed where operation at minimum load is

critical. The operation of a smaller chiller loaded to a

greater percentage over minimum is preferred to operating

a larger chiller at or near its minimum recommended value.

Operation at its minimum load should only be done inter-

mittently, not for long periods of time. Minimum load con-

trol should not be used as a means to allow oversizing

chillers.

Evaporator water temperature

Maximum leaving fluid temperature for the unit is 60 F

(15.5 C). The unit can start and pull down with up to 95 F

(35 C) entering fluid temperature. For sustained operation,

it is recommended the fluid temperature not exceed 70 F

(21.1 C). Water flowing through the evaporator should

never exceed 100 F (37.8 C). Minimum leaving water tem-

perature is 40 F (4.4 C).

Evaporator flow range

For minimum and maximum evaporator flow rates please

see the Evaporator and Condenser Flow Rates table. A

high flow rate is generally limited by the maximum pres-

sure drop that can be tolerated by the unit. The 30XW

chillers are designed for a full load temperature rise of 5 to

20 F (2.8 to 11.1 C). See the Carrier selection program for

pressure drop values and performance.

Minimum evaporator flow

When system design conditions require a lower flow (or

higher temperature rise) than the minimum allowable evap-

orator flow rate, please follow the recommendations

below.

• Multiple smaller chillers may be applied in series, each

providing a portion of the design temperature rise.

• Try increasing the number of passes in the evaporator

(1, 2, or 3 passes available).

• Evaporator fluid may be recirculated to raise the flow

rate to the chiller. The mixed temperature entering the

evaporator must be maintained to a minimum of at least

5 F (2.8 C) above the leaving chilled fluid tempera-

ture and a maximum of no more than 20 F (11.1 C)

above the leaving chilled fluid temperature.

NOTE: Recirculation flow is shown below.

Maximum evaporator flow

The maximum evaporator flow (approximately 5 F

(2.8 C) rise results in a practical maximum pressure drop

through the evaporator. Optional marine waterboxes may

help reduce pressure drop by a small amount. If this is

insufficient, a return fluid may bypass the evaporator to

keep the pressure drop through the evaporator within

acceptable limits. This permits a higher delta T with lower

fluid flow through the evaporator and mixing after the

evaporator.

NOTE: Bypass flow is shown below.

°

°

°

°

Application data

RECIRCULATION FLOW

CHILLER EVAPORATOR

a30-4698

BYPASS FLOW

CHILLER EVAPORATOR

a30-4699

23

Variable evaporator flow rates

Variable flow rates may be applied to a standard chiller.

The unit will, however, attempt to maintain a constant

leaving fluid temperature. In such cases minimum flow

must be in excess of minimum flow given in the

Evaporator and Condenser Flow Rates table, and mini-

mum loop volume must be in excess of 3 gallons per ton

(3.21 L per kW). Combined flow rate and change in load

must not change by more than 10% per minute. Additional

loop volume may be necessary to ensure fluid is not quickly

recirculated back to the chiller before the chiller has

adjusted to the previous change in flow rate and load

condition.

Water loop volume

The loop volume in circulation must equal or exceed 3 gal.

per nominal ton (3.2 L per kW) of cooling for temperature

stability and accuracy in normal air-conditioning applica-

tions. In process cooling applications, there should be 6 to

10 gallons per ton (6.5 to 10.8 L per kW). To achieve this

loop volume, it is often necessary to install a tank in the

loop. The tank should be baffled to ensure there is no strat-

ification, and that water (or brine) entering the tank is ade-

quately mixed with liquid in the tank. See Tank installation

drawing.

Evaporator fouling factor

The fouling factor used to calculate tabulated ratings is

0.0001 sq ft hr F/Btu (0.000018 sq m C/W). As

fouling factor is increased, both unit capacity and EER

(Energy Efficiency Ratio) decrease. The impact of the foul-

ing factor on performance varies significantly with chiller

size and application conditions. Ratings must be deter-

mined by the Carrier selection program.

Condenser minimum flow rate

The minimum condenser flow rate is shown in the Mini-

mum and Maximum Condenser Flow Rate Table. If the

condenser flow rate is below the minimum rate shown, try

increasing the number of condenser passes (1 or 2 pass

available).

Evaporator and condenser freeze protection

The solution concentration must be sufficient to protect the

chilled water loop to a freeze protection (first crystals)

concentration of at least 15 F (8.3 C) below the leaving

fluid temperature set point. If chiller fluid lines are in an

area where ambient conditions fall below 34 F (1.1 C), it is

recommended that an antifreeze solution be added to pro-

tect the unit and fluid piping to a temperature 15 F

(8.3 C) below the lowest anticipated temperature. For

corrections to performance, refer to the chiller selection

program.

NOTE: Use only antifreeze solutions approved for heat

exchanger duty. Use of automotive antifreeze is not recom-

mended because of the fouling that can occur once their

relatively short-lived inhibitors break down.

Multiple chillers

Where multiple chillers are required, or where standby

capability is desired, chillers may be installed in parallel.

Units may be of the same or different sizes. However,

evaporator flow rates must be balanced according to the

recommendations of each chiller to ensure proper flow.

Unit software is capable of controlling two units as a sin-

gle plant. Refer to the Controls, Start-Up, Operation, Ser-

vice and Troubleshooting guide for further details.

Dual chiller control

The chiller on board controller allows 2 chillers (piped in

parallel or series) to operate as a single chilled water plant

with standard control functions coordinated through the

master chiller controller. This feature requires a communi-

cation link between the 2 chillers. There are several advan-

tages to this type of control:

• Redundancy (multiple circuits)

• Better low load control (lower tonnage capability)

• Lower rigging lift weights (2 machines rather than one

large machine)

• Chiller lead-lag operation (evens the wear between the

two machines)

Parallel chiller operation

Parallel chiller operation is the recommended option for

dual chiller control. In this case, each chiller must control

its own dedicated pumps or isolation valves. Balancing

valves are recommended to ensure the proper flow to each

chiller. Two field-supplied and installed dual chiller leaving

water temperature sensors are required (one for each mod-

ule) for this function to operate properly.

Consider adding additional isolation valves to isolate

each chiller to allow for service on the machine, and still

allow for partial capacity from the other chiller.

Series chiller operation

Series chiller operation is an alternate control method sup-

ported by the chiller control system. Certain applications

might require that two chillers be connected in series. For

nominal 10 F (5.6 C) evaporator ranges, use the one-pass

heat exchanger options to reduce fluid side pressure drop.

Use the standard pass arrangement for low flow, high tem-

perature rise applications. Two field-supplied and installed

dual chiller leaving water temperature sensors are required

(one for each module) for this function to operate properly.

⋅

°

⋅

°

°

°

°

°

BAD

BAD

GOOD

GOOD

TANK INSTALLATION

a30-3185

24

Consider adding additional piping and isolation valves to

isolate each chiller to allow for service on the machine, and

still allow for partial capacity from the other chiller.

Even if evaporators are piped in series, parallel con-

denser piping should be considered on constant speed

chillers to maximize capacity and efficiency while minimiz-

ing condenser pressure drop and saturated condensing

temperatures. If the condensers are piped in series, ensure

that the leaving fluid temperature does not exceed 122 F

(50 C) for standard units, or 140 F (60 C) for high con-

densing or heat machine condensers.

Electric utility interests

Energy management — Use of energy management

practices can significantly reduce operating costs, espe-

cially during off-peak modes of operation. Demand limiting

and temperature reset are two techniques for accomplish-

ing efficient energy management. See Demand Limiting

(also called load shedding) section below for further details.

Demand limiting (load shedding) — When a utility's

demand for electricity exceeds a certain level, loads are

shed to keep electricity demand below a prescribed maxi-

mum level. Typically, this happens on hot days when air

conditioning is most needed. The energy management

module (EMM) option can be added to accomplish this

reduction. Demand may be limited on the unit by resetting

water temperature, or by unloading the chiller to a given

predetermined percentage of the load. Demand limit may

also be driven by an external 4 to 20 mA signal. These fea-

tures require a signal from an intelligent central control.

Duty cycling — Duty cycling will cycle an electrical load

at regular intervals regardless of need. This reduces the

electrical demand by "fooling" demand measuring devices.

Duty cycling of the entire compressor is NOT recom-

mended since motor windings and bearing life will suffer

from constant cycling.

Remote on-off control — Remote on-off control may be

applied by hard-wired connection (see the Controls,

Start-Up, Operation, Service and Troubleshooting guide)

or by connection to the Carrier Comfort Network® (CCN)

system.

Application data (cont)

25

Typical piping and wiring

TYPICAL PIPING AND WIRING FOR 30XW EVAPORATOR AND CONDENSER

EVAPORATOR

SHUT-OFF

VALVE

BALANCING

VALVE

TO

COOLING

LOAD

FROM

COOLING

LOAD

CONDENSER

WATER

INLET

CONDENSER

WATER

OUTLET

VIBRATION

ISOLATION

VIBRATION

ISOLATION

VIBRATION

ISOLATION

PRESSURE

GAGE

SHUT-OFF

VALVE

CONDENSER

30XW

DRAIN

OUTLET

BALANCING

VALVE

SHUT-OFF

VALVE

STRAINER

INSULATE EVAPORATOR

HEADS, BOTH ENDS

VENT INLET

CONTROL POWER

SUPPLY *TO CHILLED

WATER PUMP

TO CONDENSER

WATER PUMP

MAIN POWER

SUPPLY

*Control power supply is not required for chillers ordered with the control power transformer option.

NOTES:

1. Wiring and piping shown are for general point-of-connection only and are not intended to show details for a

specific installation. Certified field wiring and dimensional diagrams are available upon request. The 30XW

units should be installed using certified drawings.

2. All wiring must comply with applicable codes.

3. Refer to Carrier System Design Manual for details regarding piping techniques.

4. Piping, wiring, switches, valves, vent gages, strainers, drain, and vibration isolation are all field supplied.

5. Water connections are shown on left side (discharge end) of control box in this figure. Actual connections

can be on either side according to chiller configuration ordered.

a30-4700

LEGEND

Field Wiring

Field Piping

26

STANDARD SINGLE INPUT POWER CONFIGURATION

LEGEND

NOTES:

1. Each main power source must be supplied from a field-supplied fused

electrical service with a (factory-installed or field-installed) disconnect

located in sight from the unit.

2. Control circuit power must be supplied from a separate source through

a field-supplied disconnect. An optional control transformer may be

used to provide control circuit power from the main unit power supply.

3. Maximum instantaneous current flow (ICF) during start-up is the point

in the starting sequence where the sum of the LRA for the start-up

compressor, plus the total RLA for all running compressors is at a

maximum.

4. Maximum incoming wire size for each terminal block is 500 kcmil.

5. Maximum allowable phase imbalance is: voltage, 2%; amps, 5%.

6. Use copper conductors only.

7. The MOCP is calculated as follows:

MOCP = (2.25) (largest RLA) + the sum of the other RLAs. Size the

fuse one size down from the result. The RLAs are listed on the

nameplate.

The recommended fuse size in amps (RFA) is calculated as follows:

RFA = (1.50) (largest RLA) + the sum of the other RLAs. Size the fuse

one size up from the result. The RLAs are listed on the nameplate.

30XW

UNIT

SIZE

UNIT VOLTAGE NO. POWER

SUPPLY

CONDUCTORS

MCA MOCP ICF REC FUSE

SIZE

CONTROL CIRCUIT

V-Ph-Hz Supplied V-Ph-Hz MCA and

MOCP

Min Max WD XL

325

200-3-60 187 220 9 920.3 1200 1347.0 — 1200 115-1-60 20

230-3-60 207 253 9 799.0 1000 1171.1 — 1000 115-1-60 20

380-3-60 342 418 6 487.6 700 710.7 1753.7 600 115-1-60 20

460-3-60 414 506 6 401.0 500 586.2 1448.2 450 115-1-60 20

575-3-60 518 633 3 317.3 450 467.0 1157.0 400 115-1-60 20

325

HM

200-3-60 187 220 12 1168.2 1600 1848.2 — 1600 115-1-60 20

230-3-60 207 253 9 1018.4 1200 1608.6 — 1200 115-1-60 20

380-3-60 342 418 6 614.5 800 973.1 2452.1 700 115-1-60 20

460-3-60 414 506 6 510.8 700 805.0 2027.0 600 115-1-60 20

575-3-60 518 633 6 406.8 500 642.8 1620.8 450 115-1-60 20

350

200-3-60 187 220 9 920.3 1200 1347.0 — 1200 115-1-60 20

230-3-60 207 253 9 799.0 1000 1171.1 — 1000 115-1-60 20

380-3-60 342 418 6 487.6 700 710.7 1753.7 600 115-1-60 20

460-3-60 414 506 6 401.0 500 586.2 1448.2 450 115-1-60 20

575-3-60 518 633 3 317.3 450 467.0 1157.0 400 115-1-60 20

350

HM

200-3-60 187 220 12 1168.2 1600 1848.2 — 1600 115-1-60 20

230-3-60 207 253 9 1018.4 1200 1608.6 — 1200 115-1-60 20

380-3-60 342 418 6 614.5 800 973.1 2452.1 700 115-1-60 20

460-3-60 414 506 6 510.8 700 805.0 2027.0 600 115-1-60 20

575-3-60 518 633 6 406.8 500 642.8 1610.8 450 115-1-60 20

400

200-3-60 187 220 9 1041.3 1200 1400.8 — 1200 115-1-60 20

230-3-60 207 253 9 902.9 1200 1217.3 — 1200 115-1-60 20

380-3-60 342 418 6 545.2 700 736.3 1779.3 700 115-1-60 20

460-3-60 414 506 6 452.9 600 609.3 1471.3 600 115-1-60 20

575-3-60 518 633 3 366.3 500 488.8 1178.6 450 115-1-60 20

400

HM

200-3-60 187 220 12 1329.8 1600 1920.0 — 1600 115-1-60 20

230-3-60 207 253 12 1156.7 1600 1670.1 — 1600 115-1-60 20

380-3-60 342 418 6 700.9 1000 1011.5 2490.5 800 115-1-60 20

460-3-60 414 506 6 579.8 800 835.7 2057.7 700 115-1-60 20

575-3-60 518 633 6 464.4 600 668.4 1646.4 600 115-1-60 20

ICF — Maximum Instantaneous Current Flow

HM — Heat Machine Units

LRA — Locked Rotor Amps

MCA — Minimum Circuit Ampacity (for wire sizing)

MOCP — Maximum Overcurrent Protection

RLA — Rated Load Amps

WD — Wye-Delta Start

XL — Across-the-Line Start

Electrical data

27

OPTIONAL DUAL INPUT POWER CONFIGURATION

LEGEND

NOTES:

1. Each main power source must be supplied from a field-supplied fused

electrical service with a (factory-installed or field-installed) disconnect

located in sight from the unit.

2. Control circuit power must be supplied from a separate source through a

field-supplied disconnect. An optional control transformer may be used

to provide control circuit power from the main unit power supply.

3. Maximum instantaneous current flow (ICF) during start-up is the point in

the starting sequence where the sum of the LRA for the start-up com-

pressor, plus the total RLA for all running compressors is at a maximum.

4. Maximum incoming wire size for each terminal block is 500 kcmil.

5. Maximum allowable phase imbalance is: voltage, 2%; amps, 5%.

6. Use copper conductors only.

7. The MOCP is calculated as follows:

MOCP = (2.25) (largest RLA) + the sum of the other RLAs. Size the fuse

one size down from the result. The RLAs are listed on the nameplate.

The recommended fuse size in amps (RFA) is calculated as follows:

RFA = (1.50) (largest RLA) + the sum of the other RLAs. Size the fuse

one size up from the result. The RLAs are listed on the nameplate.

30XA

UNIT

SIZE

UNIT VOLTAGE NO. POWER

SUPPLY

CONDUCTORS

MCA MOCP ICF REC FUSE

SIZE

CONTROL CIRCUIT

V-Ph-Hz Supplied V-Ph-Hz MCA and

MOCP

Min Max WD XL

325

200-3-60 187 220 6/6 511.3/511.3 800/800 938/938 — 700 700 115-1-60 20

230-3-60 207 253 6/6 443.9/443.9 700/700 816/816 — 600 600 115-1-60 20

380-3-60 342 418 3/3 270.9/270.9 450/450 494/494 1537/1537 350 350 115-1-60 20

460-3-60 414 506 3/3 222.8/222.8 400/400 408/408 1270/1270 300 300 115-1-60 20

575-3-60 518 633 3/3 176.3/176.3 300/300 326/326 1016/1016 225 225 115-1-60 20

325

HM

200-3-60 187 220 6/6 649.0/649.0 1000/1000 1329/1329 — 800 800 115-1-60 20

230-3-60 207 253 6/6 565.8/565.8 1000/1000 1156/1156 — 700 700 115-1-60 20

380-3-60 342 418 3/3 341.4/341.4 600/600 700/700 2179/2179 450 450 115-1-60 20

460-3-60 414 506 3/3 283.8/283.8 500/500 578/578 1800/1800 350 350 115-1-60 20

575-3-60 518 633 3/3 226.0/226.0 400/400 462/462 1440/1440 300 300 115-1-60 20

350

200-3-60 187 220 6/6 511.3/511.3 800/800 938/938 — 700 700 115-1-60 20

230-3-60 207 253 6/6 443.9/443.9 700/700 816/816 — 600 600 115-1-60 20

380-3-60 342 418 3/3 270.9/270.9 450/450 494/494 1537/1537 350 350 115-1-60 20

460-3-60 414 506 3/3 222.8/222.8 400/400 408/408 1270/1270 300 300 115-1-60 20

575-3-60 518 633 3/3 176.3/176.3 300/300 326/326 1016/1016 225 225 115-1-60 20

350

HM

200-3-60 187 220 6/6 649.0/649.0 1000/1000 1329/1329 — 800 800 115-1-60 20

230-3-60 207 253 6/6 565.8/565.8 1000/1000 1156/1156 — 700 700 115-1-60 20

380-3-60 342 418 3/3 341.4/341.4 600/600 700/700 2179/2179 450 450 115-1-60 20

460-3-60 414 506 3/3 283.8/283.8 500/500 578/578 1800/1800 350 350 115-1-60 20

575-3-60 518 633 3/3 226.0/226.0 400/400 462/462 1440/1440 300 300 115-1-60 20

400

200-3-60 187 220 6/6 578.5/578.5 1000/1000 938/938 — 700 700 115-1-60 20

230-3-60 207 253 6/6 501.6/501.6 800/800 816/816 — 700 700 115-1-60 20

380-3-60 342 418 3/3 302.9/302.9 500/500 494/494 1537/1537 400 400 115-1-60 20

460-3-60 414 506 3/3 251.6/251.6 450/450 408/408 1270/1270 350 350 115-1-60 20

575-3-60 518 633 3/3 203.5/203.5 350/350 326/326 1016/1016 250 250 115-1-60 20

400

HM

200-3-60 187 220 6/6 738.8/738.8 1200/1200 1329/1329 — 1000 1000 115-1-60 20

230-3-60 207 253 6/6 642.6/642.6 1000/1000 1156/1156 — 800 800 115-1-60 20

380-3-60 342 418 6/6 389.4/389.4 600/600 700/700 2179/2179 500 500 115-1-60 20

460-3-60 414 506 3/3 322.1/322.1 500/500 578/578 1800/1800 400 400 115-1-60 20

575-3-60 518 633 3/3 258.0/258.0 450/450 462/462 1440/1440 350 350 115-1-60 20

ICF — Maximum Instantaneous Current Flow

HM — Heat Machine Units

LRA — Locked Rotor Amps

MCA — Minimum Circuit Ampacity (for wire sizing)

MOCP — Maximum Overcurrent Protection

RLA — Rated Load Amps

WD — Wye-Delta Start

XL — Across-the-Line Start

28

COMPRESSOR ELECTRICAL DATA

LEGEND

30HX UNIT

SIZE

VOLTAGE

V-Ph-Hz COMPRESSOR COMPRESSOR A COMPRESSOR B

RLA LRA (WD) LRA (XL) RLA LRA (WD) LRA (XL)

325

200-3-60 06TU483 409.0 938 N/A 409.0 938 N/A

230-3-60 06TU483 355.1 816 N/A 355.1 816 N/A

380-3-60 06TU483 216.7 494 1537 216.7 494 1537

460-3-60 06TU483 178.2 408 1270 178.2 408 1270

575-3-60 06TU483 141.0 326 1016 141.0 326 1016

325 HM

200-3-60 06TU483 519.2 1329 N/A 519.2 1329 N/A

230-3-60 06TU483 452.6 1156 N/A 452.6 1156 N/A

380-3-60 06TU483 273.1 700 2179 273.1 700 2179

460-3-60 06TU483 227.0 578 1800 227.0 578 1800

575-3-60 06TU483 180.8 462 1440 180.8 462 1440

350

200-3-60 06TU483 409.0 938 N/A 409.0 938 N/A

230-3-60 06TU483 355.1 816 N/A 355.1 816 N/A

380-3-60 06TU483 216.7 494 1537 216.7 494 1537

460-3-60 06TU483 178.2 408 1270 178.2 408 1270

575-3-60 06TU483 141.0 326 1016 141.0 326 1016

350 HM

200-3-60 06TU483 519.2 1329 N/A 519.2 1329 N/A

230-3-60 06TU483 452.6 1156 N/A 452.6 1156 N/A

380-3-60 06TU483 273.1 700 2179 273.1 700 2179

460-3-60 06TU483 227.0 578 1800 227.0 578 1800

575-3-60 06TU483 180.8 462 1440 180.8 462 1440

400

200-3-60 06TU554 462.8 938 N/A 462.8 938 N/A

230-3-60 06TU554 401.3 816 N/A 401.3 816 N/A

380-3-60 06TU554 242.3 494 1537 242.3 494 1537

460-3-60 06TU554 201.3 408 1270 201.3 408 1270

575-3-60 06TU554 162.8 326 1016 162.8 326 1016

400 HM

200-3-60 06TU554 591.0 1329 N/A 591.0 1329 N/A

230-3-60 06TU554 514.1 1156 N/A 514.1 1156 N/A

380-3-60 06TU554 311.5 700 2179 311.5 700 2179

460-3-60 06TU554 257.7 578 1800 257.7 578 1800

575-3-60 06TU554 206.4 462 1440 206.4 462 1440

HM — Heat Machine Units

LRA — Locked Rotor Amps

N/A — Not Applicable

RLA — Rated Load Amps

WD — Wye-Delta Start

XL — Across-the-Line Start

Electrical data (cont)

29

Water-Cooled Chiller

HVAC Guide Specifications

Size Range: 325 to 400 Nominal Tons

(1133 to 1354 kW)

Carrier Model Number: 30XW

Part 1 — General

1.01 SYSTEM DESCRIPTION

Microprocessor controlled water-cooled liquid chiller

utilizing screw compressors and electronic expan-

sion valves.

1.02 QUALITY ASSURANCE

A. Unit shall be rated in accordance with AHRI Stan-

dard 550/590 (U.S.A.), latest edition.

B. Unit construction shall comply with ASHRAE 15

Safety Code, NEC, and ASME applicable codes

(U.S.A. codes).

C. Unit shall be manufactured in a facility registered to

ISO 9001:2000 Manufacturing Quality Standard.

D. 200-v, 230-v, 460-v, 575-v, 60 Hz units shall be

constructed in accordance with UL or UL Canada

standards and shall be tested and listed by ETL or

ETL, Canada, as conforming to those standards.

Units shall carry the ETL and ETL, Canada, labels.

1.03 DELIVERY, STORAGE, AND HANDLING

A. Unit controls shall be capable of withstanding 150 F

(65.5 C) storage temperatures in the control

compartment.

B. Chiller and starter should be stored indoors, pro-

tected from construction dirt and moisture. An

inspection should be conducted under shipping

tarps, bags, or crates to be sure water has not col-

lected during transit. Protective shipping covers

should be kept in place until machine is ready for

installation. The inside of the protective cover

should meet the following criteria:

1. Temperature is between 40 F (4.4 C) and

120 F (48.9 C).

2. Relative humidity is between 10% and 80%

(non-condensing).

Part 2 — Products

2.01 EQUIPMENT

A. General:

Factory assembled, single-piece, water-cooled liquid

chiller with dual (2) independent refrigerant circuits.

Contained within the unit cabinet shall be all factory

wiring, piping, controls, refrigerant charge (HFC-

134a) and special features required prior to field

start-up.

B. Compressors:

1. Semi-hermetic twin-screw compressors with

internal muffler and check valve.

2. Each compressor shall be equipped with a dis-

charge shutoff valve.

C. Evaporator:

1. Shall be tested and stamped in accordance

with ASME Code (U.S.A.) for a refrigerant

working-side pressure of 220 psig (1408 kPa).

Water-side pressure rating shall be 150 psig

(1034 kPa). In Canada, maximum water-side

pressure shall be 250 psig (1725 kPa), per the

Canadian National Registry.

2. Shall be mechanically cleanable shell-and-tube

type with removable heads.

3. Tubes shall be internally enhanced, seamless-

copper type, and shall be rolled into tube

sheets.

4. Shall be equipped with victaulic fluid

connections.

5. Shell shall be insulated with 3/4-in. (19-mm)

closed-cell, polyvinyl chloride foam with a maxi-

mum K factor of 0.28. Heads may require field

insulation.

6. Shall have a evaporator drain and vent.

7. Design shall incorporate 2 independent refrig-

erant circuits.

8. Shall include isolation valves to allow isolation

of the refrigerant charge in either the evapora-

tor or the condenser.

9. Shall be equipped with factory-installed thermal

dispersion chilled fluid flow switch.

D. Condenser:

1. Shall be tested and stamped in accordance

with ASME code (U.S.A.) for a refrigerant

working-side pressure of 220 psig (1408 kPa).

Water-side pressure rating shall be 150 psig

(1034 kPa). In Canada, maximum water-side

pressure shall be 250 psig (1725 kPa), per the

Canadian National Registry.

2. Shall be mechanically cleanable shell-and-tube

type with removable heads.

3. Tubes shall be internally enhanced, seamless-

copper type, and shall be rolled into tube

sheets.

4. Shall be equipped with victaulic water

connections.

5. Design shall incorporate 2 independent refrig-

erant circuits.

E. Heat Machines:

1. Condenser shall be tested and stamped in

accordance with ASME Code (U.S.A.) for a

refrigerant working-side pressure of 300 psig

(2068 kPa).

2. Design shall incorporate 2 independent refrig-

erant circuits.

3. Heat machine condensers shall include factory-

installed thermal insulation on the condenser,

condenser flow switch and leaving water

temperature sensor. Heat machine units

require field-installed thermal insulation on the

Guide specifications

30

compressor discharge piping and waterbox

heads because of high temperature.

F. Refrigeration Components:

Refrigerant circuit components shall include oil sep-

arator, high and low side pressure relief devices, dis-

charge and liquid line shutoff valves, filter drier,

moisture indicating sight glass, expansion valve,

refrigerant economizer (unit sizes 350, 400), and

complete charge of compressor oil. The units shall

have a complete operating charge of refrigerant

HFC-134a.

G. Controls:

1. Unit controls shall include the following mini-

mum components:

a. Microprocessor with non-volatile memory.

Battery backup system shall not be accepted.

b. Separate terminal block for power and

controls.

c. Separate 115-v power supply to serve all

controllers, relays, and control components.

d. ON/OFF control switch.

e. Replaceable solid-state controllers.

f. Pressure sensors installed to measure

suction, oil, economizer, and discharge

pressure. Thermistors installed to measure

evaporator entering and leaving fluid

temperatures.

2. Unit controls shall include the following

functions:

a. Automatic circuit lead/lag.

b. Capacity control based on leaving chilled

fluid temperature and compensated by rate

of change of return-fluid temperature with

temperature set point accuracy to 0.1° F

(0.05° C).

c. Limiting the chilled fluid temperature

pulldown rate at start-up to an adjustable

range of 0.2° F to 2° F (0.1 to 1.1° C) per

minute to prevent excessive demand spikes

at start-up.

d. Seven-day time schedule.

e. Leaving chilled fluid temperature reset from

return fluid and outside air temperature.

f. Chilled water and condenser water pump

start/stop control.

g. Chiller control for parallel chiller applications

without addition of hardware modules and

control panels (requires thermistors).

h. Timed maintenance scheduling to signal

maintenance activities for strainer

maintenance and user-defined maintenance

activities.

i. Single step demand limit control activated by

remote contact closure.

H. Safeties:

Unit shall be equipped with thermistors and all nec-

essary components in conjunction with the control

system to provide the unit with the following

protections:

1. Loss of refrigerant charge.

2. Reverse rotation.

3. Low chilled fluid temperature.

4. Motor overtemperature.

5. High pressure.

6. Electrical overload.

7. Loss of phase.

8. Loss of chilled water flow

I. Diagnostics:

1. The control panel shall include, as standard, a

display:

a. Touch screen display consisting of ¼ VGA

LCD (liquid crystal display) with adjustable

contrast and backlighting.

b. Display shall allow a user to navigate

through menus, select desired options and

modify data.

2. Features of the display shall include:

a. Display shall be customizable and allow up to

72 data points.

b. Display shall support both local equipment

or network made for remote mount.

c. Display shall allow access to configuration,

maintenance, service, set point, time sched-

ules, alarm history and status data.

d. Display shall have one button for chiller on/

off.

e. Display shall include three levels of password

protection against unauthorized access to

configuration and maintenance informa-

tion, and display set up parameters.

f. Display shall allow for easy connection of a

portable hand held technician tool to access

information and upload and/or download

chiller settings.

g. Display shall be compatible with the Carrier

Comfort Network® (CCN) system and pro-

vide network alarm acknowledgement or

indication and provide capability to fully

monitor and control chiller.

h. Display alarms and parameters shall be

capable of being displayed in full text.

i. Display shall be capable of displaying the last

50 alarms and will store a snapshot of a

minimum of 20 status data parameters for

each alarm.

j. Compressor run hours.

k. Compressor number of starts.

l. Compressor current.

Guide specifications (cont)

31

m. Time of day:

1) Display module, in conjunction with the

microprocessor, must also be capable of

displaying the output (results) of a ser-

vice test. Service test shall verify opera-

tion of every switch, thermistor, and

compressor before chiller is started.

2) Diagnostics shall include the ability to

review a list of the 30 most recent

alarms with clear language descriptions

of the alarm event. Display of alarm

codes without the ability for clear lan-

guage descriptions shall be prohibited.

3) An alarm history buffer shall allow the

user to store no less than 30 alarm

events with clear language descriptions,

time and date stamp event entry.

4) The chiller controller shall include multi-

ple connection ports for communicating

with the local equipment network, the

Carrier Comfort Network (CCN) sys-

tem and the ability to access all chiller

control functions from any point on the

chiller.

5) The control system shall allow software

upgrade without the need for new hard-

ware modules.

J. Operating Characteristics:

Unit shall be capable of starting up with 95 F (35 C)

entering fluid temperature to the evaporator.

K. Electrical Requirements:

1. Unit primary electrical power supply shall enter

the unit at a single location.

2. Unit shall operate on 3-phase power at the volt-

age shown in the equipment schedule.

3. Control voltage shall be 115-v (60 Hz), single-

phase, separate power supply.

L. Special Features:

Certain standard features are not applicable when

the features designated by * are specified. For assis-

tance in amending the specifications, contact your

local Carrier Sales office.

* 1. Wye-Delta Starter:

Unit shall have a factory-installed, wye-delta

starter to minimize electrical inrush current.

2. Vibration Isolation:

Unit shall be supplied with rubber-in-shear

vibration isolators for field installation.

3. Control Power Transformer:

Unit shall be supplied with a factory-installed

controls transformer that will supply control cir-

cuit power from the main unit power supply.

4. Temperature Reset Sensor:

Unit shall reset leaving chilled fluid temperature

based on outdoor ambient temperature or

space temperature when this sensor is installed.

* 5. Minimum Load Control:

Unit shall be equipped with factory-installed,

microprocessor-controlled, minimum load con-

trol that shall permit unit operation down to

10% of full capacity.

6. One-Pass Evaporator:

Factory-installed option shall reduce pressure

drop for high flow applications.

7. Three-Pass Evaporator:

Factory-installed option shall enhance perfor-

mance for low flow applications.

8. Energy Management Module:

A factory or field installed module shall provide

the following energy management capabilities:

4 to 20 mA signals for leaving fluid temperature

reset, cooling set point reset or demand limit

control; 2-point demand limit control (from 0 to

100%) activated by a remote contact closure;

and discrete input for "Ice Done" indication for

ice storage system interface.

9. BACnet™ Translator Control:

Unit shall be supplied with field-installed inter-

face between the chiller and a BACnet Local

Area Network (LAN, i.e., MS/TP EIA-485).

10. LON Translator Control:

Unit shall be supplied with field-installed inter-

face between the chiller and a Local Operating

Network (LON, i.e., LonWorks® FT-10A

ANSI/EIA-709.1).

11. Navigator™ Hand Held Portable Display:

a. Portable hand held display module with a

minimum of 4 lines and 20 characters per

line, or clear English, Spanish, Portuguese

or French language.

b. Display menus shall provide clear language

descriptions of all menu items, operating

modes, configuration points and alarm diag-

nostics. Reference to factory codes shall not

be accepted.

c. RJ-14 connection plug shall allow display

module to be connected to factory-installed

receptacle.

d. Industrial grade coiled extension cord shall

allow the display module to be moved

around the chiller.

e. Magnets shall hold the display module to

any sheet metal panel to allow hands-free

operation.

f. Display module shall have NEMA 4x

housing.

g. Display shall have back light and contrast

adjustment for easy viewing in bright sun-

light or night conditions.

h. Raised surface buttons with positive tactile

response.

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

Pg 32 Catalog No. 04-52300015-01 Printed in U.S.A. Form 30XW-2PD

Replaces: 30XW-1PD

Carrier Corporation • Syracuse, New York 13221 6-09

Section 9

Ta b 9 a

12. Compressor Suction Service Valve:

Standard refrigerant discharge isolation and

liquid valves enable service personnel to store

the refrigerant charge in the evaporator or

condenser during servicing. This factory-

installed option allows for further isolation of

the compressor from the evaporator vessel.

13. GFI Convenience Outlet:

Shall be factory or field-installed and mounted

with easily accessible 115-v female receptacle.

Shall include 4 amp GFI receptacle.

14. 300 psig (2068 kPa) Evaporator Operating

Pressure:

This option shall provide for water-side pres-

sure operation up to 300 psig (2068 kPa).

15. 300 psig (2068 kPa) Condenser Operating

Pressure:

This option shall provide for water-side pres-

sure operation up to 300 psig (2068 kPa).

16. Marine Waterboxes:

Marine waterboxes shall provide water piping

connections extending from the side of the

waterbox (as opposed to extending from the

end of the waterbox). This option also includes

a removable bolt on waterbox cover allowing

access to the heat exchanger tubes without

breaking the existing field piping. This option

is available for both the evaporator and

condenser.

17. Flanged Connection:

The flanged connection option shall provide

an ANSI flange on the end of the chiller water

piping for connection to a customer supplied

mating flange in the field piping. This option

is available for both the evaporator and

condenser.

18. One-Pass Condenser:

This option shall provide a lower pressure

drop through the condenser for applications

with low delta T (temperature) or high flow or

where the condensers are piped in a series.

The one-pass condenser option is only avail-

able with flanged connections and with a dis-

charge end leaving water connection.

19. Dual Point Power:

The dual point power option shall provide a

means for connecting two sources of power to

dual compressor chillers. One source of power

is wired to operate the compressor on the A

circuit and one source of power is wired to

operate the compressor on the B circuit of the

chiller.

20. Non-Fused Disconnect:

This option shall provide a no load, lockable,

through the door handle disconnect for unit

power on the chiller. On dual point power,

one disconnect is provided for each of the two

main power supplies. This disconnect does

not remove the control circuit from power

supply.

21. Control Transformer:

The control transformer shall be sized to sup-

ply the needs of the control circuit from the

main power supply.

22. Nitrogen Charge:

A nitrogen charge option is available to pro-

vide a 15 lb (6.8 kg) charge of nitrogen

instead of a full factory charge of R-134a

refrigerant to keep the chiller refrigerant cir-

cuit dry during shipment. This option is rec-

ommended for applications where the unit will

be disassembled prior to installation. Units

shipped with a nitrogen charge will receive an

electrical continuity test at the factory prior to

shipment.

23. Crate for Shipment:

This option is recommended for export

orders. The chiller will be bagged prior to

being placed in a wooden crate.

24. Remote Enhanced Display:

This option is a remotely mounted indoor

40-character per line, 16-line display panel for

unit monitoring and diagnostics.

25. Vibration Springs:

A set of non-siesmic spring isolators can be

provided for installation at the jobsite.

Guide specifications (cont)