Filter
Top Products
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