1
M
INI
-S
PACE
EC I
NSTALLATION
, O
PERATION
AND
M
AINTENANCE
M
ANUAL
1.0
INTRODUCTION
1.1 General
The Mini-Space EC
™
fl oor mounted precision air conditioning
system covered by this manual is designed and manufactured
by STULZ Air Technology Systems, Inc. (STULZ) using
the latest state-of-the-art control technology. 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 system warranty.
Study the instructions in this manual; they must be followed
to avoid diffi culties. Spare parts are available from STULZ
to insure continuous operation. Using substitute parts or
bypassing electrical or refrigeration components in order
to continue operation is not recommended and will void the
warranty. Due to technological advancements, components
are subject to change without notice.
Mini-Space EC
systems and centrifugal condensers are
designed to be installed indoors, unless otherwise noted on
the equipment. Propeller-type condensers, drycoolers and
pump packages are designed for outdoor use.
1.2 Product
Description
The DX-based versions of the Mini-Space EC precision A/C
system are available in air-cooled, water-cooled and glycol-
cooled confi gurations. A chilled water confi guration of the unit
is also available. The cooling capacity in kW will depend on
the unit size, which can range from 4kW (12 MBH) to 14 kW
(48 MBH). Mini-Space EC systems are designed to operate
with R410A refrigerant.
NOTE
Mini-Space EC
systems are designed to supply air
to only one room.
The functional modes of operation in addition to cooling are
heating, humidifi cation, dehumidifi cation and fi ltration, which
provide complete environmental control of a conditioned
space. The cabinet is available in one footprint size: A compact
23.8 inches wide by 22.7 inches deep.
The cabinet is designed for convenient, 100% front access.
There are four airflow pattern configurations; upflow,
downflow, rear return, and front discharge. The basic
cabinet height remains the same, (72.8”), regardless of the
confi guration. An optional plenum box may be selected (for
upfl ow and rear-return units only), which adds an extra 18.5”
to the height. See the installation drawing provided with your
unit for the layout and dimensions of the cabinet.
The Mini-Space EC unit is provided with a factory-mounted
main power disconnect switch with a lockable handle. The
disconnect switch electrically isolates the unit during routine
maintenance. The system incorporates state-of-the-art
component protection with the use of motor start protectors
and circuit breakers.
Mini-Space EC units have a STULZ
E²
series microprocessor
controller that provides a full alarm system, status monitoring,
cooling/humidifi cation control, multi-system networking and
BMS integration.
1.3 Safety
1.3.1 General
Note, caution and warning statements are used in this
manual to draw attention to important operational and safety
information.
• A
bold
text
NOTE
marks an important detail.
• A
bold
text
CAUTION
safety alert conveys
information important for protecting your equip-
ment and performance. Be especially careful to
read and follow all cautions that apply to your
application.
• A
bold
text
WARNING
safety alert conveys
information important for protecting you from
harm. Pay very close attention to all warnings
that apply to your application.
A safety alert symbol —
— precedes a general
WARNING
or
CAUTION
statement.
An electrical shock symbol —
— precedes an electrical
shock
WARNING
safety statement.
1.3.2 Safety
Summary
The following statements are general guidelines. They are
followed by warnings and cautions applicable to the Mini-
Space EC
system.
•
Prior to performing any installation, operation,
maintenance or troubleshooting procedure
read and understand all instructions, recom-
mendations and guidelines contained within
this manual.
•
Never operate the unit with any cover, guard,
screen panel, etc., removed unless the instruc-
tions specifi cally state otherwise, and then do
so with extreme caution to avoid personal injury.
• Never
lift any component in excess of 35
pounds without help. If a lifting device is used
to move a unit, ensure it is capable of support-
ing the unit.