Trane TCAA Series - Installation Electrical; Connecting Module Power and Control; Wires; Power Distribution Panel

16
ARTC-SVX013A-EN
Installation Electrical
Connecting Module Power and
Control Wires
Connections are typically made at the power distribution
panel of each chiller.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements
for field wiring installation and grounding as
described in NEC and your local/state/national
electrical codes.
Power Distribution Panel
The chiller must be fed by its own individual power. All
power wiring, up to the power panel, is the responsibility of
the installing contractor.
BMS Wiring
The physical medium will be determined by project
parameters and is the responsibility of the installing
contractor.
Hardwire Options
Table 3. Hardwire options
Function Detail
Analog Inputs
Remote Setpoint
4 -20 mA Signal to control chilled water output.
Requires remote setpoint enable.
Table 3. Hardwire options (continued)
Function Detail
Remote Offset
4-20 mA signal to work with as chiller-based
baseline setpoint. Requires remote offset enable.
External Load
Shedding
0-10 v or 4-20 mA signal to limit max power of the
chiller.
Chiller Pump
Speed Ref
0-10 v or 4-20 mA signal use as a pass-through to
control pump.
Digital Inputs
Cooling Enable
Hardwired Binary input to enable and disable
chiller. Requires chiller be in auto mode.
Remote Setpoint
Enable
Binary input required to use remote setpoint.
Remote Offset
Enable
Binary input required to use remote offset.
External Load
Shedding
Binary input to engage external load limit internal
chiller parameter.
Digital Outputs
Chiller Pump
Enable
Binary output to enable external chiller pumping
package.
General Alarm
Binary output indicating occurrence of
unacknowledged fault.
Chiller Running
Binary output indicating that any compressor is
running.
Compressor
Running
Binary outputs (up to 4) indicating specific
compressor running.
No Compressor
Available Fault
Binary output indicating that all compressors are
not available to operate.
Chiller at
Maximum
Binary output indicating chiller is producing its
maximum cooling at the current conditions.
Cooling Tower
Enable
Binary output top enable external cooling tower
(water-cooled only).
Condenser Pump
Enable
Binary output to enable external condenser
pumping package (water-cooled only)