18 Chapter 2 Mechanical Installation
Liebert.PEX Chilled Water Series Air Conditioner User Manual
Table 2-3 Specifications of indoor unit mounting base
Item
Specification
Remark
Steel plate
100mm × 100mm × (5 ~ 6.5)mm
-
Angle steel
40mm × 40mm × 3mm
-
Rubber
cushion
Top
Thickness: 3mm ~ 5mm
-
Lateral
Thickness: 2mm ~ 3mm
-
Bottom
Thickness: 10mm ~ 12mm
-
Installation hole for
expansion bolt
-
Install the bolts according to your
requirements
H
One-bay
H = 200mm (upflow unit)
H = 300mm (forward fan downflow unit,
according to the floor height)
H
≥
400mm (backward fan downflow
unit)
1. The forward downflow unit needs guide
plate.
2. Size H here is for reference only, and it
shall be determined according to the actual
needs. Backward fan downflow unit: because
the fan needs to sink during the operation,
size H must be larger than 400mm
Two-bay
Three-bay
Note:
The external side boards of the unit cannot bear weight. Take this into consideration while selecting angle steels and
fixing holes
2. Lay a layer of rubber cushion on the top, lateral of mounting base and on the bottom of the steel plate
respectively. See Figure 2-18, Figure 2-19 and Figure 2-20 for their positions and see Table 2-3 for the
thickness.
3. Determine the installation position. Fix the mounting base onto the mounting base according to the site
conditions and your requirement.
4. Fix the AC unit onto the mounting base with nuts, spring washers, flat washers and bolts.
5. Backward fan downflow unit: the fan must sink under floor, the detailed operation procedures are as
follows:
a. Before placing the unit to the actual installation location, open the rear board and remove the backward fan
fixing board, then install the rear board, see Figure 2-21;
Fan fixing board
Remove the three
fixing screws
Pallet
Backward fan
Figure 2-21 Removing backward fan fixing board
b. Place the unit to the actual installation location, and remove backward fan transportation fixing board and
pallet, see Figure 2-22;
Remove the humidifier water tray drain pipe;
Remove the transportation fixing board (7 fixing screws);
Remove the pallet (2 fixing screws);
Note
When removing the pallet, you must grasp the handle and support the fan so as to prevent the fan from falling.