4
SCXF-SVX01B-EN
Figure I-GI-1. IntelliPak
®
commercial self-contained Signature Series unit components.
Installation
Signature Series Self-
Contained Unit Components
Commercial self contained units are
complete HVAC systems used in floor-by-
floor applications. Units are easy to install
because they feature a single point
power connection, factory installed and
tested controls, single water point
connection, factory installed options, and
an internally trapped drain connection.
See Figures I-GI-1 and I-GI-2 for typical
unit components.
The hermetically sealed 3-D scroll
compressor motors utilize internal motor
protection and time delays to prevent
excessive cycling.
The water-cooled condensers are shell
and tube type with an internal subcooler.
Condensers are available as
mechanically or chemically cleanable.
The evaporator fan is double width,
double inlet and forward curved with a
fixed pitch belt drive assembly.
Frequency drives or inlet guide vanes are
optional. Standard or premium efficiency
motor options are available as TEFC or
open drip proof type.
All water-cooled units ship with a full
refrigerant and oil charge. Air-cooled
units ship with oil and a dry nitrogen
holding charge. Therefore, air-cooled
units require field-piping refrigerant
2-inch flat filter
box inside unit
casing
Waterside economizer
(cleanable option shown)
Sight glasses with
ports for viewing
while unit is running
Hinged and removable control
panel door for easy access
Unit mounted microprocessor
control with easy-to-read human
interface panel
Energy saving single fan
with inlet guide vanes or
variable frequency drive
Internally trapped
condensate drain for
low cost installation
Waterside valve
package option to
enhance system
efficiency
Two-bolt connection on cleanable
condenser for quick, easy
maintenance
Trane 3-D
®
Scroll Compressor
for reliability, efficiency and
quiet operation
General
Information
connections to the air cooled condensing
unit.
Air-cooled units have two refrigerant
circuits. Water-cooled units have four
refrigerant circuits; which include a filter
drier, pressure relief valve, liquid line
service valve, sight glass/moisture
indicator, thermal expansion valve with a
sensing bulb and external equalizing line,
discharge line shrader valve, a suction
line shrader valve, and high and low
pressure cutout switches. Water-cooled
units also include a liquid line service
valve for each circuit.
For more detailed information, see the
Owner’s section of this manual.
