Installation
52
AFDR-SVN001D-EN
1K14 Relay Connections
9. Using 16 AWG, make the following connections to
relay 1K14 listed in
UC800 Software Installation and
Configuration
Note:
The software upgrade process requires that the
UC800 ether have no application code already
installed, or if an application is existing, that the
controller be in the Stop mode and that the
compressor and the pumps have been shut off. TU
will enforce this requirement with pop-up
messages at the appropriate step in the process,
but it is best to Stop the chiller before the software
upgrade process begins.
1. Connect the service laptop computer to the target
RTHD UC800 using an A/B type USB cable. Launch
Tracer TU service tool software in the service
computer. If no shortcut exists, the program can be
found in
Programs > Trane > Tracer TU
.
2. After Tracer TU is launched, the Startup Task Panel
dialog box appears; refer to
. Select
Direct
Connection
and then click
Connect
button.
Important:
Tracer TU version 9.0.322 is required. If that
version or newer is not already installed,
refer to
for details
on how to obtain and upgrade Tracer TU.
Figure 76.
AFD pin location—Modbus™
Table 15. Pin-out, relay 1K14
Terminal—
Relay 1K14 Description
Mating
Connection
Description
A1
Coil, 115V “hot” 1X5-3
To High Pressure
Cutout, NC (RED
Wire)
A2
Coil, 115V com 1X5-8 thru 11
To 115V
common
9
N/O contact
Pin 37 AFD Drive
Safe Stop
5
N/O contact
Pin 12 AFD Drive
24V out
NOTICE
Compressor Damage!
Before connecting power wire to the motor terminals,
with the motor terminal jumpers removed, verify
proper phasing between the drive and motor terminals
with an ohmmeter for all connections. Improper
phasing occurs between the drive and motor terminals
can cause compressor damage.
Pins 61,
68, 69
(Modbus™)
Figure 77.
