Vertiv | Liebert® CRV4 | User Manual 24
Mechanical Installation
3.3.1. Removing Filter Net
1. Prior to connecting the piping of the indoor unit, ensure to remove the lter net.
2. Open the rear door of the cabinet to reveal the two lter nets on the top and the bottom panels of the unit.
3. First loosen the xing screws on the xing ake of the lter net, then remove the xing ake to further
remove the top lter net.
4. Use the same steps (1 to 3) to remove the bottom lter. Figure 3-12 shows the process of removing the lters.
No. Description No. Description
1 Mounting screw M5x8 2 Fixing flake of the filter
Figure 3-12 Removing the Filters Nets
3.3.2. Connecting the Condensate Water Drainage Piping of the Indoor Unit
The condensed water of the electrode humidier and the evaporator converge to a common water pan
following which it is drained through the drainage pipe of the drain pump.
1. The unit is congured to adopt the bottom drain mode by default; therefore, to drain water from the bottom,
direct/ route the soft drainage pipe through the drainage hole of the pump, and then connect it to the outer
drainage pipe.
2. For the unit with top piping connection: If user wants to drain water from the top of the unit, then user needs
to connect the drainage pipe of the drainage pump outlet to the top drain water copper pipe. A check valve
should be installed on the connecting part between the top drain water copper pipe and the connecting
piping of the system.
3. This prevents the backow of the water in the connecting pipes to the water pan. User can use a clamp from
the accessories box to x the drain pipe to the drain connector, and the xing torque is 15 kg.cm, refer
Figure 3-13 for better understanding.
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