(© Aug, 2006)
Compact CWE Series Installation, Operation & Maintenance Manual
1-1
1.0 INTRODUCTION
1.1 General
Congratulations, the Compact CWE™ floor mounted
air conditioning system covered by this manual is
designed and manufactured by Stulz Air Technology
Systems, Inc. (SATS) using the latest, state-of-the-art
control technology. Recognized as a world leader,
SATS provides air conditioning systems with the
highest quality craftsmanship using the finest materi-
als available in the industry. The unit will provide years
of trouble free service if installed and maintained in
accordance with this manual. Damage to the unit from
improper installation, operation or maintenance is not
covered by the warranty.
STUDY the instructions contained in this manual.
They must be followed to avoid difficulties. Spare parts
are available from Stulz Air Technology Systems to
insure continuous operation. Using substitute parts or
bypassing electrical or cooling components in order to
continue operation is not recommended and will VOID
THE WARRANTY. Due to technological advance-
ments, components are subject to change without
notice.
All Compact CWE systems are designed to be
installed indoors unless otherwise noted on the
equipment.
1.2 Product Description
Compact CWE systems are designed to be the most
versatile and flexible floor mounted air conditioning
systems in the industry. Compact CWE units are
available in a down-flow air configuration and utilize
highly efficient, electronically commutated (EC) fans.
The cooling capacity, in kW, will depend on the unit
size, which can range from 30 to 230 kW. (1kW =
3415 BTU/Hr). Refer to the unit nameplate to identify
the model number and cooling capacity of your unit.
Compact CWE systems operate with an external
source of chilled water. The chilled water system is a
closed loop circuit in which cold water is circulated
through the chilled water coil. On demand of cooling
by the microprocessor controller, the chilled water
valve opens. Chilled water flows to the coil in propor-
tion to the amount of cooling required. The controller
modulates the valve opening together with the the fan
speed based on the cooling demand. Heat from the
surrounding air is extracted through the finned tubing
of the coil by the cold water. Water is then recirculated
back to the cold water source.
Compact CWE systems have been designed to supply
air to only one room.
NOTE
Compact CWE systems are strictly for non-resi-
dential applications.
The functional modes of operation in addition to
cooling are heating, humidification and dehumidifica-
tion, which provide complete environmental control of a
conditioned space.
There are several cabinet sizes based on the type of
system and capacity. Regardless of configuration,
Compact CWE systems are compact and versatile.
See the Installation drawing provided with your unit for
the layout and dimensions of the cabinet.
The Compact CWE unit is provided with a factory
mounted, main power disconnect switch with lockable
handle. The disconnect switch electrically isolates the
unit during routine maintenance. The system incorpo-
rates state of the art component protection with the
use of motor start protectors and circuit breakers.
An operating manual for the system controller is
provided under separate cover. Refer to that manual for
detailed instructions on operating the system control-
ler provided with your unit.
The standard controller for Compact CWE A/C units is
the SATS model C6000. This microprocessor control-
ler provides the following features: input/output moni-
toring status, full integrated control of heating, cooling,
humidification and dehumidification; multi-unit control
and remote communication with building management
systems. The controller is typically factory mounted
on the front hinged access door of the unit. As an
option, the controller may be remotely mounted to a
wall or control panel.
C6000 Controller
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