5RT-SVX31A-EN
Unit Nameplate
A Mylar unit nameplate is located on
the unit’s corner support next to the fil-
ter access panel. It includes the unit
model number, serial number, electrical
characteristics, refrigerant charge, as
well as other pertinent unit data.
Compressor Nameplate
The nameplate for the compressors are
located on the side of the compressor.
Hazard Identification
Warnings are provided throughout
this manual to indicate to installing
contractors, operators, and service
personnel of potentially hazardous
situations which, if not avoided,
COULD result in death or serious in-
jury.
Cautions are provided throughout
this manual to indicate to installing
contractors, operators, and service
personnel of potentially hazardous
situations which, if not avoided, MAY
result in minor or moderate injury.
Economizer Control Actuator
(Optional)
ReliaTel™ Control
The ECA monitors the mixed air tem-
perature, return air temperature, mini-
mum position setpoint (local or remote),
power exhaust setpoint, CO2 setpoint,
CO2, and ambient dry bulb/enthalpy
sensor or comparative humidity (return
air humidity against ambient humidity)
sensors, if selected, to control dampers
to an accuracy of +/- 5% of stroke. The
actuator is spring returned to the closed
position any time that power is lost to
the unit. It is capable of delivering up to
25 inch pounds (2.82 N-m) of torque
and is powered by 24 VAC.
RTCI - ReliaTel™ Trane
Communication Interface
(Optional)
This module is used when the applica-
tion calls for an ICS
TM
building manage-
ment type control system. It allows the
control and monitoring of the system
through an ICS panel. The module can
be ordered from the factory or ordered
as a kit to be field installed. Follow the
installation instruction that ships with
each kit when field installation is neces-
sary.
RLCI - ReliaTel™ LonTalk
Communication Interface
(Optional)
This module is used when the applica-
tion calls for an ICS
TM
building manage-
ment type control system that is
LonTalk. It allows the control and moni-
toring of the system through an ICS
panel. The module can be ordered from
the factory or ordered as a kit to be field
installed. Follow the installation instruc-
tion that ships with each kit when field
installation is necessary.
RTOM - ReliaTel™ Options
Module (Optional)
The RTOM monitors the supply fan
proving, clogged filter, supply air tem-
perature, exhaust fan setpoint, supply
air tempering, Frostat™ and smoke de-
tector. Refer to system input devices
and functions for operation.
General Information
Unit Description
Before shipment, each unit is leak
tested, dehydrated, charged with refrig-
erant and compressor oil, and run
tested for proper control operation.
The condenser coils are aluminum fin,
mechanically bonded to copper tubing.
Direct-drive, vertical discharge con-
denser fans are provided with built-in
thermal overload protection.
The ReliaTel™ Control Module is a mi-
croelectronic control system that is re-
ferred to as “Refrigeration Module”
(RTRM). The acronym RTRM is used
extensively throughout this document
when referring to the control system
network.
These modules through Proportional/In-
tegral control algorithms perform spe-
cific unit functions that governs unit op-
eration in response to; zone tempera-
ture, supply air temperature, and/or hu-
midity conditions depending on the ap-
plication. The stages of capacity control
for these units are achieved by starting
and stopping the compressors.
The RTRM is mounted in the control
panel and is factory wired to the re-
spective internal components. The
RTRM receives and interprets informa-
tion from other unit modules, sensors,
remote panels, and customer binary
contacts to satisfy the applicable re-
quest for cooling.
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