BAS-SVN029C-EN
5
General Information
About This Manual
The step-by-step instructions outlined in this manual describe the procedures required to
successfully retrofit a Trane TR1 variable frequency drive (VFD) on RTAC™ air-cooled chillers to a
Trane TR170 VFD. Drives are required for low and wide ambient operation. The Trane TR1 VFD
was originally installed for RTAC design sequences W0 through 1C. An affected RTAC will have
two, three, or four condenser fan drives. The number of drives will match the number of
compressors. For example, a three-compressor RTAC will have three condenser fan drives.
The installation instructions in this manual are divided into three general topic areas:
•
Removal of existing TR1 VFD.
•
Installation of replacement TR170 VFD.
•
TR170 programming of parameters.
Follow start-up and troubleshooting procedures outlined in the service manuals of the unit and/
or the literature that is included with this TR170 control.
Tools Required
Very few tools are required to perform this installation. A service technician with a well-stocked
tool chest should have the right tools to perform the job.
