20 Chapter3 Mechanical Installation
Liebert. PEX+Series Precision Air Conditioner User Manual
HWA plug terminal
Plug terminal for
water level switch
Figure 3-18 Floating pole of high water-level switch
Removing pipe fasteners
To prevent the long copper pipes from scratching the metal plate and being damaged, the pipes are cushioned with
foam or bound up before delivery. Remove those materials before power-on commissioning.
3.9 Installation Inspection
After the mechanical installation is completed, you should check and confirm it according to Table 3-8.
Table 3-8 Installation Inspection
Items
Results
Sufficient space is left around the unit for maintenance
The equipment is installed vertically and the installation fasteners have been fixed
The pipes between the indoor unit and outdoor unit have been connected, and the ball valves
of the indoor unit and outdoor unit have been opened completely
The condensate pump (if needed) has been installed
The drain pipe has been connected
The water supply pipe for the infrared humidifier has been connected
All pipe joints have been made fixed
The transportation fasteners have been removed
Irrelevant things (such as transportation material, structure material and tools) inside or
around the equipment have been cleared after the equipment is installed
The air distribution system is installed as per room design (for example, raised floor/grilles,
ductwork, etc)
The upflow unit must have plenum or have air supply pipe connection, and the fan and heater
shall not be accessible after installation.
After confirming the preceding points, you can start the electrical installation.
