Chapter 2 Instructions For Installation Preparations; Equipment Room Requirement; Installation Space; Installation Space Requirements - Emerson Liebert.PEX+ Series User Manual

4 Chapter2 Instructions for Installation Preparations

Chapter 2 Instructions for Installation Preparations

Liebert.PEX+ is professional equipment, and there are lots of complex installation works, so the preparation is very
important. This chapter details the installation preparation, including how to prepare the installation environment and
space and reserve the maintenance space, and how to unpack and inspect. Please read this chapter carefully before
installation.

2.1 Equipment Room Requirement

The requirements are as follows:
1. The equipment room should have good heat insulation.
2. The equipment room should have sealed damp proof layer. The damp proof layer of the ceiling and walls must use
polyethylene film or be applied with moisture proof paint. The coating of the concrete wall and the floor must be
damp proof.
3. All the doors and windows should be closed and the seams (if any) should be as narrow as possible to prevent the
outdoor air from entering the equipment room, which may increase the load of heating, cooling, humidifying and
dehumidification of the system. It is recommended that the inhalation of outdoor air be kept below 5% of the total
indoor airflow.

2.2 Installation Space

2.2.1 Installation Space Requirements

Adequate installation space for the indoor unit must be provided. The indoor unit of air cooled product must be
installed on the floor of equipment room or computer room, and the condenser can be installed on the ground of
outdoor or other room. The entire water cooled precision AC shall be installed on floor of equipment room or computer
room.
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warning

Do not use the indoor unit in the open and severe outdoor environment.

Avoid locating the indoor unit in concave or narrow areas, which can baffle the airflow, shorten the cooling
cycle and result in air return short circuit and air noise.

Avoid locating multiple indoor units close to each other. That can result in crossing air patterns, unbalanced
load and competitive operation.
 Do not install the unit in the vicinity of any precision equipment, and prevent the leaked condensation water
due to improper use of the air conditioner from affecting the operation of precision equipment.
 Do not install other devices (such as smoke detector) over the cabinet.

2.2.2 Maintenance Space requirement

Be sure to reserve maintenance space when installing the equipment. Leave a maintenance space of 850mm in front
of the air conditioner unit normally, and the minimal maintenance space is not less than 600mm.The requirement for
maintenance space is given in Figure 2-1.
Liebert. PEX+Series Precision Air Conditioner User Manual