Chapter3 Mechanical Installation 9
Liebert. PEX+Series Precision Air Conditioner User Manual
3.2.2 System Installation Illustration
The installation modes of the unit are shown in Figure 3-2 and Figure 3-3.
Figure 3-2 Condenser installed higher than compressor
Figure 3-3 Condenser installed lower than compressor
Note
If the condenser is installed higher than the compressor (see Figure 3-2), a back bend should be fitted to the
discharge line and liquid line of the condenser, so as to prevent the liquid refrigerant from flowing back when the
condenser stops.
The top end of the back bend must be installed higher than the highest copper pipe of the condenser.
3.3 Mechanical Parameters
3.3.1 Dimensions and weight of indoor unit
The dimensions and weight of the indoor unit are shown in Figure 3-4, Figure 3-5 and Table 3-1.
Drain pipe for condensed water
gas pipe slope
Thermal isolation
layer under floor
Floor
.
Copper pipe bracket
Liquid pipe (avoid direct sun shine)
Oil trap
Invert bend (higher than the top copper pipe of condenser)
Outdoor unit
Indoor unit
Sealed
M
a
x
7
.5
m
Water inlet pipe of humidifier
Movable floor
M
a
x
2
0
m
Thermal isolation
layer under floor
Sealed
Floor
Copper pipe
bracket
Indoor unit
Outdoor unit (Condensor)
M
a
x
5
m
liquid pipe slope
Drain pipe for condensed water
Inlet pipe of humidifier
Movable floor
Gas pipe slope
