Specifications

Field Control Panel Signal Wiring
CVHE-SVN03D-EN 19
The sensor probe lead wire between
the sensor probe and the module
can be separated by cutting the two
wire probe lead leaving equal
lengths of wire on each device; the
sensor probe and the sensor
module. Note this sensor and
module are matched and must
remain together or inaccuracy may
occur. These wires can then be
spliced to with two 14-18 AWG 600V
wires of sufficient length to reach the
desired outdoor location, maximum
length 1000 feet (305 meters). The
module four-wire bus must be
connected to the UCP four-wire bus
using the Trane approved
connectors provided.
The sensor will be configured (given
its identity and become functional)
at start-up when the serviceman
performs the start-up configuration.
It will not be operational until that
time.
Note: If shielded cable is used to
extend the sensor leads, be sure to
tape off the shield wire at the
junction box and ground it at the
UCP. If the added length is run in
conduit, do not run them in the
same conduit with other circuits
carrying 30 or more volts.
Note: Maintain at least 6 inches
between low-voltage (<30v) and
high voltage circuits. Failure to do so
could result in electrical noise that
may distort the signals carried by the
low-voltage wiring, including the
IPC.
Optional Relay Circuits
Optional Control and Output
Circuits
Install various optional wiring as
required by the owner’s
specifications.
TRMM or LC1-C
Optional Tracer
Communication Interface
This control options allows the UCP
to exchange information such as
chiller status and operating set
points with a Tracer system.
Figure 9 illustrates how such a
communication/control network
might appear.
Note: The circuit must be run in
separate conduit to prevent
electrical noise interference.
Additional information about the
Tracer Comm option is published
in the installation manual and
operator’s guide that ships with
the Tracer.
Unit Start-Up
All phases of initial unit start-up
must be conducted under the
supervision of a qualified local
service engineer.
This includes pressure testing,
evacuation, electrical checks,
refrigerant charging, actual start-up
and operator instruction.
Advance notification is required to
assure that initial start-up is
scheduled as close to the requested
date as possible.
Starter Module
Configuration
The starter module configuration
settings will be checked (and
configured for Remote Starters)
during start-up commissioning. To
configure starter module, and
perform other starter checks, it is
recommended that the line voltage
three phase power be turned off and
secured (locked out), and then a
separate source control power
(115 vac) be utilized to power up the
control circuit. To do this, remove
control coil circuit fuse, typically 2F4,
and then connect separate source
power cord to starter terminal block
2X1-1 (H), 2X1-2 (N), and Ground.
Use the “as-built starter schematic”
to assure correct fuse and terminals.
Verify correct fuse is removed,
control circuit connections are
correct, then apply the 115 vac
separate source power to service
the controls.
Forms Information
Samples of start-up and operating
forms along with other helpful forms
are found in the Operation
Maintenance manual which can be
obtained from the nearest
Trane office.
It is recommended that the
serviceman contact the local Trane
office to obtain the most recent
printing date of the form. The forms
in the operation and maintenance
manual are only current at the time
of printing of the manual.
After obtaining the most recent
form, complete all information and
forward it to your local Trane office.