Direct Expansion Or
Chilled Water Models?
• Direct Expansion includes Air cooled, Water cooled, Glycol cooled, and GLYCOOL.
• Chilled Water Systems require connection to a chilled water source.
Self-Contained
or Split System?
Self-Contained Systems package all refrigeration components within the cabinet to minimize installation time.
• Air Cooled models require field connection to a remote condenser.
• Water Cooled models require field connection to a remote water source.
• Glycol Cooled/GLYCOOL models require field connection to a remote drycooler and circulating pump.
• All Chilled Water systems are self-contained.
Split systems split the refrigeration
components between the room
unit and a condensing unit.
This locates the compressor and condenser at a remote location, and reduces noise levels within the room unit.
• Air, Water, and Glycol Cooled models connect to the room unit with pre-charged refrigerant line sets (up to 45 ft./14 meters), or traditional piping techniques for
longer distances.
Front Access For Easy
Maintenance
All interior components are front
accessible to simplify maintenance,
and reduce the floorspace that must
be kept open.
Stable & (Quiet)
A MIG welded steel frame provides
a solid platform for the internal
components. Units incorporate a
vibration-isolated fan deck which
reduces noise and vibration
transmission to any connected
ductwork. The heavy gauge
panels/heavy duty gaskets option
provides upgraded protection,
popular in industrial and/or high
static applications.
Corrosion Resistant
The frame is painted using an
autodeposition method. The entire
frame is dipped into liquid ensuring a
complete and even coating. The result
is a frame that is highly resistant to
chipping and corrosion. Exterior
panels are powder coated and baked,
a solvent-free process that is not only
environmentally safe, but produces
an attractive, durable finish.
Precise Humidity Control
The Infrared Humidifier has been
a feature on Liebert environmental
control systems for over 25 years.
Its rapid response and cleanliness
has made it an industry standard in
applications that demand precise,
particle-free humidity control. An autoflush system reduces the
buildup of mineral solids and reduces
maintenance time. If your application
calls for a Steam-Generating
Humidifier, Liebert can respond.
The disposable canister makes
maintenance quick and easy.
High Performance
Cooling and
Heating Components
An A-Frame Evaporator Coil
exposes more coil surface to the air
that passes through it. This not only
provides a more rapid and precise
response to changing room
conditions, but it reduces the
horsepower requirements of the
fan motor, saving energy.
The 304/304 Stainless Steel,
Finned Tube Reheat, like the
evaporator coil is designed to
maximize surface area. This allows
lower sheath temperatures, reducing
the likelihood of ionization that could
trip fire detection equipment, and
more precisely controlling room
temperature during dehumidification.
The reheat coils are constructed of
stainless steel for corrosion resistance
and long life. An optional
SCR-Controlled Reheat is available
that provides infinite response levels
to changing room temperatures.
Year-Round
Dependability And
Energy Efficiency
A rugged and quiet Scroll
Compressor is at the heart of the
refrigeration system. It operates at
one of the highest EER’s in the
industry.
• Air cooled systems with outdoor
condenser can operate
between -30° and +120°F
(-34° and 49°C).
• Water and glycol cooled systems
feature a coaxial condenser and
regulating valves that can be
adjusted to meet the capabilities
of the site.
All Components From
One Manufacturer
Liebert is the only manufacturer in
the computer support industry that
builds its own condensers and
drycoolers. They feature aluminum
cabinets and copper-tube,
aluminum-fin coils, and are built to
precisely match the heat rejection
requirements of the Challenger 3000.
NRTL-C Certified
Standard products are NRTL-C
listed/certified. NRTL-C meets both
U.S. and Canadian government safety
standards, providing fast, hassle-free
inspection and building code approval.