Condenser; Remote Monitoring Software; Optional Features; Transportation And Movement - Liebert PEX+ Series User Manual

1.3.2 Condenser

Refer to condenser user manual.

1.3.3 Remote Monitoring Software

Liebert.PEX+ uses the standard communication protocol defined by Ministry of Information Enterprise. Refer to
section 3 Intelligent device protocol, Power Supply, Air Conditioner and Environmental Centralized Monitoring System
for details. Through the configured RS485 or TCP/IP port, Liebert.PEX+ can communicate with the host computer and
receive the control of the host software.

1.3.4 Optional Features

The optional parts include: Extension kit, low temperature kit, two-level electric heater, no heater, no humidifier,
plenum for upflow unit, electrode humidifier, water cooled unit and electronic expansion valve.
Extension kit
If there is a requirement for long piping / high vertical drop between the indoor unit and condenser according to actual
application condition, an extension kit shall be configured and the specific selection is described in 3.6.1 Pipe
Extension Kit (Optional) .
Low temperature kit
In winter (outdoor temperature below -15℃), the air conditioner shall use a low temperature kit for cooling. This kit is
inside the unit. User should consider the low temperature environment to make reasonable selection.
Two-stage electric heater
According to user requirement, a two-stage electric heater shall be used and the heating capacity shall be identical
with the one-stage heater
No heater
Liebert.PEX+ AC shall have the option without heating according to user requirements.
No humidifier
Liebert.PEX+ AC shall have the option without humidifying according to user requirements.
Plenum
The upflow unit shall be configured with a plenum with its configuration listed in 3.3.3 Plenum dimensions (for upflow
unit). For special plenum, please contact Emerson.
Electrode humidifier
Liebert.PEX+ AC shall have the option of electrode humidifier according to user requirements. The electrode
humidifier has a different requirement for water inlet / outlet pipes with the standard infrared humidifier. Refer to 3.6.3
Connecting water inlet pipe of humidifier for the configurations of water inlet/outlet pipes of electrode humidifier.
Water cooled unit
Non-standard water-cooled unit can be designed according to user requirements. The corresponding water inlet /
outlet pipes shall be configured for installation and the pipes shall connect to chilled water on user site. If the pipe is
below DN40, we recommend using threaded connection of galvanized pipe. When the pipe exceeds DN50, use
welded connection of seamless steel tubes. For the convenience of using and maintenance from user side to unit, we
recommend that users configure check valve, filter, thermometer, pressure gauge, sewage pipe and
vibration-absorbing joints; The cleanliness of water system must be detected before running the water system to avoid
affecting air conditioning system by sewage.
Electronic expansion valve
The standard configuration is mechanical type thermal expansion valve, and optional electronic expansion valve can
be provided according to user requirements.

1.4 Transportation And Movement

Railroad transportation and shipping are recommended for transportation. If truck transportation is unavoidable,
choose roads that are less bumpy in order to protect the equipment. It is recommended to use mechanical equipment
Liebert. PEX+Series Precision Air Conditioner
Chapter 1 Overview
User Manual
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