WSHP-SVX10H-EN
7
General Information
Blower/Motor
The blower and motor is located inside the unit cabinet. The
blower and motor may be removed from the cabinet through
the chassis opening. After removing the chassis, the blower
assembly is strapped into the unit cabinet through a single
metal, flexible bracket. We refer to this bracket as a housing
belly bracket. After detaching one screw at the bottom/front
edge of the bracket, the housing and motor are free to be lifted
from the fan deck.
Compressor Nameplate
The nameplate for the compressors are located on the
compressor shell.
Controls
A 75 VA transformer is factory supplied on this unit
configuration. See wiring diagram on chassis access panel for
field wiring connection to the 24V mechanical thermostat.
Deluxe 24V Controls
Units containing the deluxe 24V control design will incorporate
a microprocessor-based control board. The Trane
microprocessor board is factory wired to a terminal strip to
provide all necessary terminals for field connection. The
deluxe board is equipped with a random start relay, anti-short
cycle timer, brown out protection, compressor disable, unit
safety control, diagnostics and a generic relay (which may be
available for field use). See
for diagnostic information.
Power wiring is made at the contactor. The wiring is fed through
the left or right conduit tube, and into the cabinet’s control box
(contactor).
Schrader Connections
Connections for the low and high side of the refrigeration
system are located conveniently on the chassis’ front beneath
a sheet metal plate.
Sound Attenuation
Sound attenuation is applied as a standard feature in the
product design. The enhanced reduction package includes a
heavy gage base plate, and gasket/insulation around the
compressor enclosure.
An optional deluxe sound reduction package is also available.
It includes a heavy gage base plate, gasket and insulation
around the compressor enclosure, and vibration isolation
between the chassis and cabinet. An additional dampening
treatment is applied around the compressor enclosure to
achieve greater acoustical reductions.
Unit Description
Before shipment, each unit is leak tested, dehydrated, charged
with refrigerant and run tested for proper control operation.
Unit Nameplate
The unit nameplate is located at the front of the unit. It includes
the unit model number, serial number, electrical
characteristics, refrigerant charge, and other pertinent unit
data.
Water Connections
½" or ¾" water connections are located on the chassis’s upper
section and clearly labeled for water-in/out hose to riser hook-
up.
Water-to-Refrigerant Coils
The co-axial water-to-refrigerant heat exchanger for the 0.75
ton through 3 tons equipment is constructed of copper or
cupro-nickel (option) for the water section and stainless steel
for the refrigeration section.
The heat exchanger is leak tested to assure there is no cross
leakage between the water and refrigerant gas.
Tracer® UC400-B
The UC400–B is a multi-purpose, programmable (or
application-specific) that provides direct-digital zone
temperature control. This controller can operate as a stand-
alone device or as part of a building automation system (BAS).
Communication between the controller and a BAS occurs on
an open standard with inter-operable protocols used in
Building Automation and Control Networks (BACnet
®
).
Programming is done by means of the Tracer® TU service tool.
For more information on the UC400-B, reference BAS-
SVX065*-EN.
For more information on the Trane® Air-Fi® wireless system,
reference BAS-SVX40*-EN.
Tracer® ZN510 Controls
Units incorporating the ZN510 control option design will
include a digital LonTalk® certified control board. The control
board will support such options as: random start delay, heating/
cooling status, occupied/unoccupied mode and fan/filter
status.
Power wiring is made at the contactor. The wiring is fed through
the left or right conduit tube, and into the cabinet’s control box
(contactor).
For more information, reference WSHP-IOP-2.
