Introduction; General; Product Description; Capabilities And Features - Trane TR-SCS Series Installation, Operation And Maintenance Manual

Introduction

General

The Remote Air-Cooled Condenser is designed and
manufactured by STULZ. Recognized as a world leader,
Trane provides precision cooling systems with the highest
quality craftsmanship using the finest materials 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.
This manual contains information for installation,
operation, maintenance, troubleshooting and repair.
Study the instructions contained in this manual. They
must be followed to avoid difficulties. Spare parts are
available from Trane to insure continuous operation.
Using substitute parts or bypassing electrical or
refrigeration components to continue operation is not
recommended and will void the warranty. Due to
technological advancements, components are subject to
change without notice.
Trane Air-cooled Condensers are designed to reject heat
from refrigerant based cooling equipment. Any use
beyond this is deemed to be not intended. Trane is not
liable for any damage resulting from improper use. The
unit is designed to be installed outdoors unless otherwise
noted on the equipment nameplate.

Product Description

Trane Remote Air-Cooled Condensers are designed to be
the most efficient and reliable condensers in the industry.
The unit is an air-cooled, heat rejection condenser with a
vertical air discharge pattern.
The unit is self-contained in a light weight, corrosion
resistant aluminum cabinet designed for mounting to a
horizontal surface. The cabinet houses the condenser
coil(s) and fan assembly(s). The electrical controls are in
an integrally mounted, weatherproof enclosure which is
isolated from the rest of the equipment.
There are many cabinet sizes based on the capacity of the
unit. Refer to the installation drawing supplied with your
unit for the layout and dimensions of your cabinet.
TR-SCS condensers are highly efficient heat rejection
systems. Enhanced performance TR-SCS-MC condensers
are also available. TR-SCS-MC condensers are equipped
with micro-channel coils which offer greater refrigerant-
to-air heat transfer. The total heat rejection in BTU/hr will
depend on the unit size. Refer to the unit nameplate to
identify the model number of your unit. The system will
consist of a single refrigeration circuit or dual circuit coil.
The coil is a closed-loop refrigerant condensing heat
exchanger in which refrigerant is continuously circulated
by the pressure differential created by a compressor.
The compressor increases refrigerant pressure to a level
sufficiently high for it to be cooled and condensed into
6
liquid by the effect of ambient air being drawn over the
condenser coil. Trane condensers are designed to operate
with either R407C or R410A refrigerant. Refer to the unit
nameplate to identify the type of refrigerant to be used in
your unit.
Outdoor air-cooled condensers use fan cycling for low
ambient head pressure control down to 0°F (TR-OHS only).
Variable fan speed control is used for operation in low
ambient temperatures down to -20°F. Flooded head
pressure control is used with fan cycling for low ambient
temperatures down to -30°F.
Operation of the condenser is independent, controlled by
the refrigerant pressure. It can be wired in the field for the
system controller (provided with the indoor evaporator
section) to enable condenser operation.

Capabilities and Features

• All aluminum cabinet construction.
• Mounting legs.
• Direct driven axial fan(s) equipped with external rotor
motors.
• Unit mounted, weather resistant control enclosure
with lockable service disconnect switch.

Safety Features

The remote air-cooled condenser is provided with a
factory mounted service disconnect switch. The service
disconnect switch electrically isolates the unit during
routine maintenance. The handle of the switch may be
locked in the "Off" position to prevent unauthorized
operation. Finger guard grilles are provided on each fan to
protect the operator from injury and to keep large tools or
other objects from falling into the fan.

Application Ranges

Trane remote air-cooled condensers are designed for
operation within the following ranges.
Outdoor Temperature Range
Fixed Fan Cycling Control (TR-OHS only)
Variable Fan Speed Control
Flooded Head Pressure Control
Operating Voltage
VAC Input per unit nameplate
Max. Piping Length; Indoor
Evaporator to Condenser
Max. Level Drop; Indoor Evaporator
to Condenser
Storage Conditions
0ºF or higher
-20ºF or higher
-30ºF or higher
+/- 10%.
150 ft equivalent length
20 ft (if condenser is below
the evaporator)
-30 ºF to 105 ºF
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