Emerson Liebert XDR - Manual (Page 32)

Piping
26
Figure 27 Detail view of Liebert XD Flex Pipe and prefabricated piping port
11. Repeat Steps 3 through 10 for the remaining Liebert XD Flex Pipe.
12. For a Liebert XDR module with removable couplings, open the return and then supply service
valves. If the Liebert XDR is pre-charged DO NOT open either of the service valves.
13. Refer to the Liebert XDC or Liebert XDP user manual for procedures for evacuation,
leak check, charging and startup.
If adding a one-shot, pre-charged Liebert XD module with one-shot pre-charged Liebert
XD Flex Pipes to an operational Liebert XD system, after connecting to the header system:
1. Open the return service valve.
2. Open the supply service valve.
Figure 28 Liebert XD prefabricated piping assembly and Liebert XD Flex Pipe
Tighten with
torque wrench.
DO NOT
OVERTIGHTEN!
Service Valve
Note: Make sure the valve
is closed before attaching
Liebert XD Flex Pipe to the system.
Hold threaded coupler
here with a wrench to keep
the brass body on
the female connector
from rotating while tightening
collar with a torque wrench.
Flex Pipe
Return Service Valve
Make sure valve is
open after system
leak check
Supply Service Valve.
Make sure valve is
open after system
leak check
Return Liebert
XD Flex Pipe from
Liebert XDR
Supply Liebert XD Flex Pipe
from Liebert XDR
Return
Main
Supply Main