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OVERVIEW OF MANUAL
The Liebert STS2 Installation, Operation and Maintenance Manual is organized in a logical
progression so that you can follow the procedures in the order provided to get your Liebert STS2
installed and running.
Read the entire manual before proceeding with the unpacking and installation of the Liebert STS2.
The major sections are as follows:
Important Safety Instructions—review the instructions on the previous page before proceeding.
Support Information—a blank table in which you can enter pertinent data, such as the serial and
part numbers, needed when calling Emerson for technical support.
Programmable Relay Board Settings Record—a blank table in which you can document your
Programmable Relay Board settings.
Input Contact Isolator Settings Record—a blank table in which you can document your Input
Contact Isolator settings.
1.0 - Safety Precautions—provides safety warnings that you must review before proceeding.
2.0 - Unpacking and Inspections—provides instructions for inspecting, unloading, handling and
removing the Liebert STS2 from the shipping pallet.
3.0 - Location Considerations—provides information regarding environmental considerations for
where the Liebert STS2 is installed.
4.0 - Locating the Liebert STS2—provides instructions for leveling the Liebert STS2 and
anchoring the unit to the floor, should that be required.
5.0 - Power and Control Wiring—provides instructions wiring the Liebert STS2 for power and
control connections.
6.0 - Options—lists the options available for the Liebert STS2.
7.0 - Installation Drawings—provides outline, seismic and electrical field connection drawings
required for installing the Liebert STS2.
8.0 - Introduction to Liebert STS2 Operations—provides a system description.
9.0 - Theory of Operation—provides an overview of how the unit works, plus a brief overview of
some of the components.
10.0 - Operating Instructions for the Touch Screen Interface—provides instructions for
turning the system on and off, completing a maintenance bypass and selecting a preferred source.
11.0 - Alarm and Faults—provides a list of event messages.
12.0 - Communication Interfaces—discusses the communication ports and provides a list of
terminal and modem commands.
13.0 - Liebert STS2 Touch Screen Display—provides instructions for using the HMI touch screen
interface for monitoring and managing the Liebert STS2.
14.0 - Operating the Liebert STS2 LED Display—provides instructions for operating the LED
Display unit without the touch screen display.
15.0 - Specifications—provides specifications for the Liebert STS2.
16.0 - Event Message Help Text—provides the help text for the various system event messages.
This help is also available through the touch screen interface.
17.0 - Maintenance—briefly discusses routine maintenance, provides proper torque settings for nuts
and bolts, and provides the Emerson contact information for technical support.