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Pre-Installation
Unit Connections
See
"Connecting Module Power and Control Wires," p. 23
to determine the method of the connection of this unit.
Site Preparation and Clearances
Chiller modules must be installed on a level surface that
has been checked by a qualified structural engineer to
support the weight of the fluid-filled modules and the
connective piping to and from the chiller. Installations must
account for minimum service access clearances as may be
practical or required by local building codes.
Chiller Clearances
One of the most critical factors affecting the performance of
air-cooled chillers is air flow above and around the chiller
modules. Walls, roofs, overhangs, and nearby mechanical
heat sources can all degrade chiller performance. An air-
cooled chiller located away from such obstacles operates
more efficiently.
Minimum Clearances
The unit must maintain clearance on all sides to provide for
adequate ambient air circulation. See
The air cooled condensers are designed for outdoor
installation and must be mounted level on a roof or
concrete slab that is strong enough to support the total
equipment operating weight. Consult a professional
structural engineer to determine safe mounting loads.
Unrestricted airflow must be provided to each condenser.
Avoid air recirculation from other nearby equipment. Locate
the condenser away from building air vents and heat
sources such as exhaust fans.
The unit should be located away from any wall or other
obstruction to provide adequate clearance for ambient air
intake and discharge.
There should be no obstruction above the chiller module to
interfere with fan discharge of heated air. Even a partial
overhang of an eave or awning can trap hot air and
significantly degrade chiller performance.
ARTC-SVX008A-EN
Figure 3, p.
14.
Each chiller module must be as far away from any wall or
barrier as space allows. Sufficient clearance must be
maintained between the chiller modules and any walls or
other objects that can interfere with the free flow of air to
the condenser coils.
Screening fences must have 50% open surface area, with
one foot of bottom clearance, and must not extend higher
than the top of the fan grill. Modules should be a minimum
of 36 inches away from any fence. Failure to follow these
minimum requirements may result in performance
degradation.
Modules located in a sub-level or pit, require special
considerations to avoid air recirculation and heat buildup.
The top of each fan grill must be level with, or higher than,
the top of the pit. All sides of the chiller must be minimum 3
ft away away from any side of the pit.
Do not attach ductwork to any fan or fan shroud.
Refrigerant piping should be sufficiently flexible to prevent
transmission of noise and vibration into the building.
If the desired location for the chiller is confined by walls,
fences, overhanging roof eaves, or is located in a pit (sub-
level site), contact Trane to discuss potential impact on
equipment performance.
The National Electric Code or local, state, and regional
building codes may require greater clearance for the
modular chiller than the figures listed in this publication.
Always consult local regulatory agencies to confirm any
additional clearances required by building codes.
Service Access
Clearance must be maintained between the module and
any nearby wall or impediment to provide sufficient room to
open power distribution panel and electrical and control
panel doors for routine maintenance and servicing. The
NEC requires 42-inch clearance to allow panel doors to
fully swing open and to meet local and national electrical
codes. Compressors, filter-strainers, and liquid line shutoff
valves are accessible on each side or end of each chiller.
13
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