Chapter 2 Mechanical Installation 19
Liebert.PEX Chilled Water Series Air Conditioner User Manual
Fixing screws (7 pcs)
Back ward fan
Handle
Transportation
fixing board
Pallet
Fixing screws (2 pcs)
Revolving axis (each
in left and right side)
Pallet
Humidifier water
tray drain pipe
Figure 2-22 Removing backward fan transportation fixing board and pallet
c. Grasp the handle, make a slow 90° rotation CCW of backward fan, so the fan would sink under pallet, see
Figure 2-23;
d. Install the fan fixing board, and tighten the 5 fixing screws, see Figure 2-23.
Backward fan
Pallet
Fan fixing board
Fan protective screening
Fixing screws (5 pcs)
Figure 2-23 Fan sinking under floor
2.4 Piping
The pipes to connect include:
1. Water drain-pipe of the unit.
2. Water inlet pipe of infrared humidifier.
3. Chilled water inlet and outlet pipes.
Connecting the water drain-pipe of the unit
The condensing water of infrared humidifier and evaporator is converged by the cross connector and drains
through the drain pipe, as shown in Figure 2-24. The outer diameter (OD) of the pipe is 25mm. If the drain pipe
is used by three or more units, the minimal OD of the pipe should be 40mm.
Note
1. A
Φ
25 hose clamp is delivered as an accessory to connect the drain pipe.
2. Because the humidifier contains boiling water, the plastic pipe must be rated higher than 194°F.
3. When connecting the drain pipe, make sure that the U bend is installed vertically and the ‘U’ shape is not distorted, so as to
ensure that the cooling water can be drained immediately and effectively.
