Vertiv | Liebert XDH | User Manual
25
Mechanical Installation (Site Preparation)
Take a note of the following when installing the refrigerant engineering pipes:
• The pipe connectors have the corresponding labels. Connect the end gas pipe and liquid pipe according to
the label indication. Do not remove the labels. If the gas pipe is in the place where it can be affected by the
cooling device (including the bed-hedgehopping floor), heat isolation measures must be taken.
•
During pipe brazing, if necessary pipe support fixture is required, fill the pipe with nitrogen, preventing
excessive oxidation during brazing and forming an oxide film on the inner wall of the pipe.
•
After the pipeline brazing, check if there is any leakage and then charge the piping with appropriate
amount of nitrogen.
3.4.4.Connecting the Condensate Water Outlet Pipe of the XDH Unit
In the dehumidification mode, the condensate water of the evaporator is collected by condensate drain pan and
discharged from the drain pump or directly through the drain pipe.
• If the unit is equipped with a condensate drain pump and if the user needs to connect the drain pipe from
the top of the unit, the following procedure needs to be carried out at site:
1. Connect drain hose 2 of the drain pump outlet to the top connection of the copper condensate drain pipe.
The inner diameter of the drain hose 2 is 9 mm, the outer diameter of the top connection drain copper pipe
is 12.7 mm.
2.
Remove the hose clamp from the accessory box that came along with the unit shipment, and fix the drain
hose 2 on the drainage tower connector, as shown in
. The torque required to tightening the joint
is 15 kgf.cm.
3. Connect the external drain pipe to the top drain hole (the pipe connection is installed, 3/4”-BSP) on the top
side of the cabinet. The external drain pipe should be tilted in the direction of drainage to prevent stopping
of the pump due to a condensate water backflow.
